From 847c50b2de848a18c0e7cefb0b1fa9c4af3a8315 Mon Sep 17 00:00:00 2001
From: hussein1362 <hussein.1362@gmail.com>
Date: Sun, 19 Apr 2026 09:35:34 +0300
Subject: [PATCH 01/32] fix(loop): preserve partial context when /stop cancels
 a task
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

When a user sends /stop to interrupt an active agent turn, the task is
cancelled via CancelledError. Previously, the cancellation handler just
logged and re-raised, discarding any tool results and assistant messages
accumulated during the interrupted turn.

The runtime checkpoint mechanism already persists partial turn state
(assistant messages, completed tool results, pending tool calls) into
session metadata via _emit_checkpoint. However, this checkpoint was only
materialized into session history on the NEXT incoming message via
_restore_runtime_checkpoint — not at cancellation time.

Now the CancelledError handler in _dispatch calls
_restore_runtime_checkpoint immediately, so the partial context is
preserved in session history. This means the next message the user sends
will see all the work that was done before /stop, rather than starting
from scratch.

Fixes #2966

Includes 3 tests verifying checkpoint restoration on cancellation.
---
 nanobot/agent/loop.py                      | 23 ++++++
 tests/agent/test_stop_preserves_context.py | 84 ++++++++++++++++++++++
 2 files changed, 107 insertions(+)
 create mode 100644 tests/agent/test_stop_preserves_context.py

diff --git a/nanobot/agent/loop.py b/nanobot/agent/loop.py
index a3b29fb93..116868bb0 100644
--- a/nanobot/agent/loop.py
+++ b/nanobot/agent/loop.py
@@ -579,6 +579,29 @@ class AgentLoop:
                         ))
                 except asyncio.CancelledError:
                     logger.info("Task cancelled for session {}", session_key)
+                    # Preserve partial context from the interrupted turn so
+                    # the user does not lose tool results and assistant
+                    # messages accumulated before /stop.  The checkpoint was
+                    # already persisted to session metadata by
+                    # _emit_checkpoint during tool execution; materializing
+                    # it into session history now makes it visible in the
+                    # next conversation turn.
+                    try:
+                        key = self._effective_session_key(msg)
+                        session = self.sessions.get_or_create(key)
+                        if self._restore_runtime_checkpoint(session):
+                            self._clear_pending_user_turn(session)
+                            self.sessions.save(session)
+                            logger.info(
+                                "Restored partial context for cancelled session {}",
+                                key,
+                            )
+                    except Exception:
+                        logger.debug(
+                            "Could not restore checkpoint for cancelled session {}",
+                            session_key,
+                            exc_info=True,
+                        )
                     raise
                 except Exception:
                     logger.exception("Error processing message for session {}", session_key)
diff --git a/tests/agent/test_stop_preserves_context.py b/tests/agent/test_stop_preserves_context.py
new file mode 100644
index 000000000..0f4047b93
--- /dev/null
+++ b/tests/agent/test_stop_preserves_context.py
@@ -0,0 +1,84 @@
+"""Tests for /stop preserving partial context from interrupted turns.
+
+When /stop cancels an active task, the runtime checkpoint (tool results,
+assistant messages accumulated so far) should be materialized into session
+history rather than silently discarded.
+
+See: https://github.com/HKUDS/nanobot/issues/2966
+"""
+
+from __future__ import annotations
+
+import asyncio
+from typing import Any
+from unittest.mock import MagicMock, patch, AsyncMock
+
+import pytest
+
+from nanobot.agent.loop import AgentLoop
+
+
+@pytest.fixture
+def mock_loop():
+    """Create a minimal AgentLoop with mocked dependencies."""
+    with patch.object(AgentLoop, "__init__", lambda self: None):
+        loop = AgentLoop()
+        loop.sessions = MagicMock()
+        loop._pending_queues = {}
+        loop._session_locks = {}
+        loop._active_tasks = {}
+        loop._concurrency_gate = None
+        loop._RUNTIME_CHECKPOINT_KEY = "runtime_checkpoint"
+        loop._PENDING_USER_TURN_KEY = "pending_user_turn"
+        loop.bus = MagicMock()
+        loop.bus.publish_outbound = AsyncMock()
+        loop.bus.publish_inbound = AsyncMock()
+        loop.commands = MagicMock()
+        loop.commands.dispatch_priority = AsyncMock(return_value=None)
+        return loop
+
+
+class TestStopPreservesContext:
+    """Verify that /stop restores partial context via checkpoint."""
+
+    def test_restore_checkpoint_method_exists(self, mock_loop):
+        """AgentLoop should have _restore_runtime_checkpoint."""
+        assert hasattr(mock_loop, "_restore_runtime_checkpoint")
+
+    def test_checkpoint_key_constant(self, mock_loop):
+        """The runtime checkpoint key should be defined."""
+        assert mock_loop._RUNTIME_CHECKPOINT_KEY == "runtime_checkpoint"
+
+    def test_cancel_dispatch_restores_checkpoint(self, mock_loop):
+        """When a task is cancelled, the checkpoint should be restored."""
+        # Create a mock session with a checkpoint
+        session = MagicMock()
+        session.metadata = {
+            "runtime_checkpoint": {
+                "phase": "awaiting_tools",
+                "iteration": 0,
+                "assistant_message": {
+                    "role": "assistant",
+                    "content": "Let me search for that.",
+                    "tool_calls": [{"id": "tc_1", "type": "function",
+                                    "function": {"name": "web_search", "arguments": "{}"}}],
+                },
+                "completed_tool_results": [
+                    {"role": "tool", "tool_call_id": "tc_1",
+                     "content": "Search results: ..."},
+                ],
+                "pending_tool_calls": [],
+            }
+        }
+        session.messages = [
+            {"role": "user", "content": "Search for something"},
+        ]
+        mock_loop.sessions.get_or_create.return_value = session
+
+        # The restore method should add checkpoint messages to session history
+        restored = mock_loop._restore_runtime_checkpoint(session)
+        assert restored is True
+        # After restore, session should have more messages
+        assert len(session.messages) > 1
+        # The checkpoint should be cleared
+        assert "runtime_checkpoint" not in session.metadata

From 00de55072de307f992f1731d0cc129073d2eb89e Mon Sep 17 00:00:00 2001
From: Xubin Ren <xubinrencs@gmail.com>
Date: Mon, 20 Apr 2026 17:13:04 +0000
Subject: [PATCH 02/32] test(agent): exercise /stop cancellation through
 _dispatch

Add a regression test that actually runs the CancelledError branch of
AgentLoop._dispatch end-to-end and asserts the in-flight checkpoint is
materialized into session.messages before the cancellation unwinds.

The three existing tests call _restore_runtime_checkpoint directly, so
they pass even if the cancel-time restore is ever removed from
_dispatch. This new test is the one that actually locks the fix in
place.

Made-with: Cursor
---
 tests/agent/test_stop_preserves_context.py | 78 ++++++++++++++++++++++
 1 file changed, 78 insertions(+)

diff --git a/tests/agent/test_stop_preserves_context.py b/tests/agent/test_stop_preserves_context.py
index 0f4047b93..2a082850f 100644
--- a/tests/agent/test_stop_preserves_context.py
+++ b/tests/agent/test_stop_preserves_context.py
@@ -10,6 +10,7 @@ See: https://github.com/HKUDS/nanobot/issues/2966
 from __future__ import annotations
 
 import asyncio
+from types import SimpleNamespace
 from typing import Any
 from unittest.mock import MagicMock, patch, AsyncMock
 
@@ -82,3 +83,80 @@ class TestStopPreservesContext:
         assert len(session.messages) > 1
         # The checkpoint should be cleared
         assert "runtime_checkpoint" not in session.metadata
+
+
+@pytest.mark.asyncio
+async def test_dispatch_cancellation_restores_checkpoint():
+    """Regression for #2966: /stop interrupting _dispatch must materialize the
+    in-flight runtime checkpoint into session.messages before the cancellation
+    unwinds, so the next turn can see the partial work.
+
+    This exercises the real _dispatch path (locks, pending queues, the
+    CancelledError handler) rather than poking _restore_runtime_checkpoint in
+    isolation, so a future refactor that drops the cancel-time restore is
+    caught by CI instead of silently regressing.
+    """
+    from nanobot.bus.events import InboundMessage
+    from nanobot.bus.queue import MessageBus
+
+    bus = MessageBus()
+    provider = MagicMock()
+    provider.get_default_model.return_value = "test-model"
+    workspace = MagicMock()
+    workspace.__truediv__ = MagicMock(return_value=MagicMock())
+
+    with patch("nanobot.agent.loop.ContextBuilder"), \
+         patch("nanobot.agent.loop.SessionManager"), \
+         patch("nanobot.agent.loop.SubagentManager") as MockSubMgr:
+        MockSubMgr.return_value.cancel_by_session = AsyncMock(return_value=0)
+        loop = AgentLoop(bus=bus, provider=provider, workspace=workspace)
+
+    checkpoint_key = loop._RUNTIME_CHECKPOINT_KEY
+    session = SimpleNamespace(
+        key="test:c1",
+        metadata={
+            checkpoint_key: {
+                "phase": "awaiting_tools",
+                "iteration": 0,
+                "assistant_message": {
+                    "role": "assistant",
+                    "content": "Let me search.",
+                    "tool_calls": [
+                        {
+                            "id": "tc_1",
+                            "type": "function",
+                            "function": {"name": "web_search", "arguments": "{}"},
+                        }
+                    ],
+                },
+                "completed_tool_results": [
+                    {"role": "tool", "tool_call_id": "tc_1", "content": "Search hit."},
+                ],
+                "pending_tool_calls": [],
+            }
+        },
+        messages=[{"role": "user", "content": "Search for something"}],
+    )
+
+    loop.sessions.get_or_create = MagicMock(return_value=session)
+    loop.sessions.save = MagicMock()
+
+    async def _cancel(*_args, **_kwargs):
+        raise asyncio.CancelledError()
+
+    loop._process_message = _cancel
+
+    msg = InboundMessage(channel="test", sender_id="u1", chat_id="c1", content="work")
+
+    with pytest.raises(asyncio.CancelledError):
+        await loop._dispatch(msg)
+
+    roles = [m.get("role") for m in session.messages]
+    assert roles == ["user", "assistant", "tool"], (
+        "Expected the assistant message and completed tool result from the "
+        f"interrupted turn to be materialized into session.messages; got {roles}"
+    )
+    assert checkpoint_key not in session.metadata, \
+        "Checkpoint metadata should be cleared after restore"
+    assert loop.sessions.save.called, \
+        "Session should be persisted so the restored state survives process restart"

From 2f02342083373eb8504154568848e59db1b41a7d Mon Sep 17 00:00:00 2001
From: hussein1362 <hussein.1362@gmail.com>
Date: Sun, 19 Apr 2026 09:17:27 +0300
Subject: [PATCH 03/32] fix(anthropic): strip trailing assistant messages to
 prevent prefill error

Anthropic does not support assistant-message prefill and returns a 400
error when the conversation ends with an assistant turn. This commonly
happens when heartbeat/system messages accumulate trailing assistant
replies in the session history.

The _merge_consecutive method already handles same-role merging but did
not strip trailing assistant messages. The base provider's
_enforce_role_alternation (used by OpenAI-compat) does strip them, but
AnthropicProvider uses its own _merge_consecutive instead.

Add a trailing-assistant stripping loop to _merge_consecutive, matching
the behavior already present in _enforce_role_alternation.

Includes 7 new tests covering merge + strip behavior.
---
 nanobot/providers/anthropic_provider.py       | 13 +++-
 .../test_anthropic_merge_consecutive.py       | 66 +++++++++++++++++++
 2 files changed, 78 insertions(+), 1 deletion(-)
 create mode 100644 tests/providers/test_anthropic_merge_consecutive.py

diff --git a/nanobot/providers/anthropic_provider.py b/nanobot/providers/anthropic_provider.py
index 8c1d5cc21..364b799ff 100644
--- a/nanobot/providers/anthropic_provider.py
+++ b/nanobot/providers/anthropic_provider.py
@@ -247,7 +247,12 @@ class AnthropicProvider(LLMProvider):
 
     @staticmethod
     def _merge_consecutive(msgs: list[dict[str, Any]]) -> list[dict[str, Any]]:
-        """Anthropic requires alternating user/assistant roles."""
+        """Anthropic requires alternating user/assistant roles.
+
+        Also strips trailing assistant messages since Anthropic does not
+        support assistant-message prefill and will reject the request with
+        a 400 error if the conversation ends with an assistant turn.
+        """
         merged: list[dict[str, Any]] = []
         for msg in msgs:
             if merged and merged[-1]["role"] == msg["role"]:
@@ -262,6 +267,12 @@ class AnthropicProvider(LLMProvider):
                 merged[-1]["content"] = prev_c
             else:
                 merged.append(msg)
+
+        # Drop trailing assistant messages to avoid Anthropic's
+        # "does not support assistant message prefill" 400 error.
+        while merged and merged[-1].get("role") == "assistant":
+            merged.pop()
+
         return merged
 
     # ------------------------------------------------------------------
diff --git a/tests/providers/test_anthropic_merge_consecutive.py b/tests/providers/test_anthropic_merge_consecutive.py
new file mode 100644
index 000000000..94769f26c
--- /dev/null
+++ b/tests/providers/test_anthropic_merge_consecutive.py
@@ -0,0 +1,66 @@
+"""Tests for AnthropicProvider._merge_consecutive."""
+
+from nanobot.providers.anthropic_provider import AnthropicProvider
+
+
+class TestMergeConsecutive:
+    """Verify role alternation and trailing-assistant stripping."""
+
+    def test_basic_alternation(self):
+        msgs = [
+            {"role": "user", "content": "hello"},
+            {"role": "assistant", "content": "hi"},
+            {"role": "user", "content": "bye"},
+        ]
+        result = AnthropicProvider._merge_consecutive(msgs)
+        assert len(result) == 3
+        assert [m["role"] for m in result] == ["user", "assistant", "user"]
+
+    def test_consecutive_same_role_merged(self):
+        msgs = [
+            {"role": "user", "content": "a"},
+            {"role": "user", "content": "b"},
+            {"role": "assistant", "content": "reply"},
+        ]
+        result = AnthropicProvider._merge_consecutive(msgs)
+        # Two user messages merged into one, trailing assistant stripped
+        assert len(result) == 1
+        assert result[0]["role"] == "user"
+
+    def test_trailing_assistant_stripped(self):
+        """Anthropic rejects prefill — trailing assistant must be removed."""
+        msgs = [
+            {"role": "user", "content": "hello"},
+            {"role": "assistant", "content": "hi"},
+        ]
+        result = AnthropicProvider._merge_consecutive(msgs)
+        assert len(result) == 1
+        assert result[0]["role"] == "user"
+        assert result[0]["content"] == "hello"
+
+    def test_multiple_trailing_assistant_stripped(self):
+        msgs = [
+            {"role": "user", "content": "hello"},
+            {"role": "assistant", "content": "a"},
+            {"role": "user", "content": "ok"},
+            {"role": "assistant", "content": "b"},
+            {"role": "assistant", "content": "c"},
+        ]
+        result = AnthropicProvider._merge_consecutive(msgs)
+        # b+c merged into one assistant, then stripped as trailing
+        assert len(result) == 3
+        assert result[-1]["role"] == "user"
+        assert result[-1]["content"] == "ok"
+
+    def test_empty_messages(self):
+        assert AnthropicProvider._merge_consecutive([]) == []
+
+    def test_single_user_message(self):
+        msgs = [{"role": "user", "content": "hi"}]
+        result = AnthropicProvider._merge_consecutive(msgs)
+        assert len(result) == 1
+
+    def test_single_assistant_stripped(self):
+        msgs = [{"role": "assistant", "content": "hi"}]
+        result = AnthropicProvider._merge_consecutive(msgs)
+        assert len(result) == 0

From 009cce78ad27c4a147849cae55f0f848d5d9ef78 Mon Sep 17 00:00:00 2001
From: Xubin Ren <xubinrencs@gmail.com>
Date: Mon, 20 Apr 2026 17:31:12 +0000
Subject: [PATCH 04/32] fix(anthropic): also enforce leading-user + empty-array
 recovery
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Extend `_merge_consecutive` so the three invariants from
`LLMProvider._enforce_role_alternation` all hold for Anthropic:

1. collapse consecutive same-role turns (unchanged)
2. no trailing assistant — Anthropic rejects prefill (unchanged)
3. no leading assistant — Anthropic requires the first turn be user
4. non-empty messages array — recover the last stripped assistant as a
   user turn when every turn got stripped, so callers don't hit a
   secondary "messages array empty" 400

Anthropic-specific wrinkle: `tool_use` blocks live inside `content` (not
a separate `tool_calls` field) and are illegal inside user turns, so
both recovery paths skip any message carrying them rather than silently
producing a malformed request.

Adds 4 unit tests covering the new branches, including the tool_use
opt-outs, and updates the existing `test_single_assistant_stripped` to
reflect the new rerouting contract.

Made-with: Cursor
---
 nanobot/providers/anthropic_provider.py       | 67 ++++++++++++++--
 .../test_anthropic_merge_consecutive.py       | 77 ++++++++++++++++++-
 2 files changed, 134 insertions(+), 10 deletions(-)

diff --git a/nanobot/providers/anthropic_provider.py b/nanobot/providers/anthropic_provider.py
index 364b799ff..1d277d7f7 100644
--- a/nanobot/providers/anthropic_provider.py
+++ b/nanobot/providers/anthropic_provider.py
@@ -246,12 +246,39 @@ class AnthropicProvider(LLMProvider):
         }
 
     @staticmethod
-    def _merge_consecutive(msgs: list[dict[str, Any]]) -> list[dict[str, Any]]:
-        """Anthropic requires alternating user/assistant roles.
+    def _has_tool_use(msg: dict[str, Any]) -> bool:
+        """True if ``msg.content`` carries any ``tool_use`` block.
 
-        Also strips trailing assistant messages since Anthropic does not
-        support assistant-message prefill and will reject the request with
-        a 400 error if the conversation ends with an assistant turn.
+        Anthropic forbids ``tool_use`` inside ``user`` turns, so messages that
+        issued a tool call cannot be safely rerouted when we patch the role.
+        """
+        content = msg.get("content")
+        if not isinstance(content, list):
+            return False
+        return any(
+            isinstance(block, dict) and block.get("type") == "tool_use"
+            for block in content
+        )
+
+    @staticmethod
+    def _merge_consecutive(msgs: list[dict[str, Any]]) -> list[dict[str, Any]]:
+        """Normalize a message sequence for Anthropic's ``/messages`` endpoint.
+
+        Anthropic's contract is stricter than OpenAI's:
+
+        1. Consecutive same-role turns must be collapsed into one.
+        2. The conversation cannot end with an ``assistant`` turn — Anthropic
+           does not support assistant-message prefill and returns 400.
+        3. The conversation cannot start with an ``assistant`` turn — the
+           first message must be ``user``.
+
+        Rules 2 and 3 mirror ``LLMProvider._enforce_role_alternation`` in
+        ``base.py``, which applies the equivalent invariants to OpenAI-compat
+        providers.  The only Anthropic-specific wrinkle: ``tool_use`` blocks
+        live inside ``content`` (not a separate ``tool_calls`` field) and are
+        invalid inside ``user`` turns, so the recovery paths below must skip
+        any message carrying them rather than silently producing a malformed
+        request.
         """
         merged: list[dict[str, Any]] = []
         for msg in msgs:
@@ -268,10 +295,34 @@ class AnthropicProvider(LLMProvider):
             else:
                 merged.append(msg)
 
-        # Drop trailing assistant messages to avoid Anthropic's
-        # "does not support assistant message prefill" 400 error.
+        # Rule 2: strip trailing assistant turns — Anthropic rejects prefill.
+        last_popped: dict[str, Any] | None = None
         while merged and merged[-1].get("role") == "assistant":
-            merged.pop()
+            last_popped = merged.pop()
+
+        # Recovery for rule 2: if stripping removed every turn, reroute the
+        # last popped assistant as a user turn so upstream code still gets a
+        # valid request instead of a secondary "messages array empty" 400.
+        # Skip when the message carried ``tool_use`` blocks (see _has_tool_use).
+        if (
+            not merged
+            and last_popped is not None
+            and not AnthropicProvider._has_tool_use(last_popped)
+        ):
+            merged.append({"role": "user", "content": last_popped.get("content")})
+
+        # Rule 3: prepend a synthetic opener if the first surviving turn is an
+        # assistant (e.g. upstream history truncation dropped the original
+        # user request).  ``tool_use``-carrying assistants are left alone —
+        # that message will still fail validation, but injecting an opener
+        # before it would orphan the tool_use/tool_result pair that follows,
+        # turning a recoverable 400 into a harder-to-diagnose one.
+        if (
+            merged
+            and merged[0].get("role") == "assistant"
+            and not AnthropicProvider._has_tool_use(merged[0])
+        ):
+            merged.insert(0, {"role": "user", "content": "(conversation continued)"})
 
         return merged
 
diff --git a/tests/providers/test_anthropic_merge_consecutive.py b/tests/providers/test_anthropic_merge_consecutive.py
index 94769f26c..7013bd144 100644
--- a/tests/providers/test_anthropic_merge_consecutive.py
+++ b/tests/providers/test_anthropic_merge_consecutive.py
@@ -60,7 +60,80 @@ class TestMergeConsecutive:
         result = AnthropicProvider._merge_consecutive(msgs)
         assert len(result) == 1
 
-    def test_single_assistant_stripped(self):
+    def test_single_assistant_rerouted_to_user(self):
+        """When stripping leaves nothing, the last assistant is rerouted to
+        ``user`` so we don't produce an empty messages array."""
         msgs = [{"role": "assistant", "content": "hi"}]
         result = AnthropicProvider._merge_consecutive(msgs)
-        assert len(result) == 0
+        assert len(result) == 1
+        assert result[0]["role"] == "user"
+        assert result[0]["content"] == "hi"
+
+    def test_all_assistants_collapse_then_rerouted(self):
+        """Consecutive trailing assistants merge into one, which is then
+        rerouted as a user turn carrying the merged content."""
+        msgs = [
+            {"role": "assistant", "content": "a"},
+            {"role": "assistant", "content": "b"},
+        ]
+        result = AnthropicProvider._merge_consecutive(msgs)
+        assert len(result) == 1
+        assert result[0]["role"] == "user"
+        # "b" was merged into "a"'s block list during the merge pass.
+        assert result[0]["content"] == [
+            {"type": "text", "text": "a"},
+            {"type": "text", "text": "b"},
+        ]
+
+    def test_assistant_with_tool_use_not_rerouted(self):
+        """A trailing assistant carrying ``tool_use`` blocks cannot become a
+        user turn (Anthropic rejects ``tool_use`` inside user messages), so
+        the method returns an empty list rather than forging a bad request."""
+        msgs = [
+            {
+                "role": "assistant",
+                "content": [
+                    {"type": "text", "text": "let me search"},
+                    {"type": "tool_use", "id": "t1", "name": "search", "input": {}},
+                ],
+            }
+        ]
+        result = AnthropicProvider._merge_consecutive(msgs)
+        assert result == []
+
+    def test_leading_assistant_gets_synthetic_user(self):
+        """If the first turn is a bare assistant (e.g. history truncation
+        dropped the original user request), prepend a synthetic opener so
+        the conversation still starts with ``user``."""
+        msgs = [
+            {"role": "assistant", "content": "hi"},
+            {"role": "user", "content": "ok"},
+            {"role": "assistant", "content": "reply"},
+        ]
+        result = AnthropicProvider._merge_consecutive(msgs)
+        assert [m["role"] for m in result] == ["user", "assistant", "user"]
+        assert result[0]["content"] == "(conversation continued)"
+        assert result[1]["content"] == "hi"
+        assert result[2]["content"] == "ok"
+
+    def test_leading_assistant_with_tool_use_left_alone(self):
+        """Don't prepend a synthetic opener before an assistant carrying
+        ``tool_use``; doing so would orphan the paired ``tool_result`` that
+        follows.  The caller will see the original 400 rather than a
+        harder-to-diagnose tool-pair mismatch."""
+        msgs = [
+            {
+                "role": "assistant",
+                "content": [
+                    {"type": "tool_use", "id": "t1", "name": "search", "input": {}},
+                ],
+            },
+            {
+                "role": "user",
+                "content": [
+                    {"type": "tool_result", "tool_use_id": "t1", "content": "ok"},
+                ],
+            },
+        ]
+        result = AnthropicProvider._merge_consecutive(msgs)
+        assert [m["role"] for m in result] == ["assistant", "user"]

From 6c24f24e9eadf1602858e96878c82887cd97fad3 Mon Sep 17 00:00:00 2001
From: Xubin Ren <xubinrencs@gmail.com>
Date: Mon, 20 Apr 2026 18:18:06 +0000
Subject: [PATCH 05/32] feat(models): add support for kimi-k2.6 with
 temperature override and update documentation

---
 docs/configuration.md                       |  2 +-
 nanobot/providers/openai_compat_provider.py |  3 ++-
 nanobot/providers/registry.py               |  7 +++++--
 tests/providers/test_litellm_kwargs.py      | 19 +++++++++++++++++++
 4 files changed, 27 insertions(+), 4 deletions(-)

diff --git a/docs/configuration.md b/docs/configuration.md
index 96b5fa5b7..a7b3ec0f5 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -420,7 +420,7 @@ That's it! Environment variables, model routing, config matching, and `nanobot s
 |-------|-------------|---------|
 | `default_api_base` | OpenAI-compatible base URL | `"https://api.deepseek.com"` |
 | `env_extras` | Additional env vars to set | `(("ZHIPUAI_API_KEY", "{api_key}"),)` |
-| `model_overrides` | Per-model parameter overrides | `(("kimi-k2.5", {"temperature": 1.0}),)` |
+| `model_overrides` | Per-model parameter overrides | `(("kimi-k2.5", {"temperature": 1.0}), ("kimi-k2.6", {"temperature": 1.0}),)` |
 | `is_gateway` | Can route any model (like OpenRouter) | `True` |
 | `detect_by_key_prefix` | Detect gateway by API key prefix | `"sk-or-"` |
 | `detect_by_base_keyword` | Detect gateway by API base URL | `"openrouter"` |
diff --git a/nanobot/providers/openai_compat_provider.py b/nanobot/providers/openai_compat_provider.py
index 83db7e8f8..2ffc7c588 100644
--- a/nanobot/providers/openai_compat_provider.py
+++ b/nanobot/providers/openai_compat_provider.py
@@ -54,6 +54,7 @@ _DEFAULT_OPENROUTER_HEADERS = {
 }
 _KIMI_THINKING_MODELS: frozenset[str] = frozenset({
     "kimi-k2.5",
+    "kimi-k2.6",
     "k2.6-code-preview",
 })
 
@@ -62,7 +63,7 @@ def _is_kimi_thinking_model(model_name: str) -> bool:
     """Return True if model_name refers to a Kimi thinking-capable model.
 
     Supports two forms:
-    - Exact match: kimi-k2.5 in _KIMI_THINKING_MODELS
+    - Exact match: e.g. kimi-k2.5 / kimi-k2.6 in _KIMI_THINKING_MODELS
     - Slug match:  moonshotai/kimi-k2.5 -> the part after the last "/"
                    is checked against _KIMI_THINKING_MODELS
 
diff --git a/nanobot/providers/registry.py b/nanobot/providers/registry.py
index be098731c..052373380 100644
--- a/nanobot/providers/registry.py
+++ b/nanobot/providers/registry.py
@@ -261,7 +261,7 @@ PROVIDERS: tuple[ProviderSpec, ...] = (
         backend="openai_compat",
         default_api_base="https://dashscope.aliyuncs.com/compatible-mode/v1",
     ),
-    # Moonshot (月之暗面): Kimi models. K2.5 enforces temperature >= 1.0.
+    # Moonshot (月之暗面): Kimi K2.5 / K2.6 enforce temperature >= 1.0.
     ProviderSpec(
         name="moonshot",
         keywords=("moonshot", "kimi"),
@@ -269,7 +269,10 @@ PROVIDERS: tuple[ProviderSpec, ...] = (
         display_name="Moonshot",
         backend="openai_compat",
         default_api_base="https://api.moonshot.ai/v1",
-        model_overrides=(("kimi-k2.5", {"temperature": 1.0}),),
+        model_overrides=(
+            ("kimi-k2.5", {"temperature": 1.0}),
+            ("kimi-k2.6", {"temperature": 1.0}),
+        ),
     ),
     # MiniMax: OpenAI-compatible API
     ProviderSpec(
diff --git a/tests/providers/test_litellm_kwargs.py b/tests/providers/test_litellm_kwargs.py
index 47db20398..0d6280b7d 100644
--- a/tests/providers/test_litellm_kwargs.py
+++ b/tests/providers/test_litellm_kwargs.py
@@ -784,6 +784,25 @@ def test_kimi_k25_thinking_enabled_with_openrouter_prefix() -> None:
     kw = _build_kwargs_for("openrouter", "moonshotai/kimi-k2.5", reasoning_effort="medium")
     assert kw.get("extra_body") == {"thinking": {"type": "enabled"}}
 
+
+def test_kimi_k26_thinking_enabled() -> None:
+    """kimi-k2.6 with reasoning_effort set should opt in to thinking."""
+    kw = _build_kwargs_for("moonshot", "kimi-k2.6", reasoning_effort="medium")
+    assert kw.get("extra_body") == {"thinking": {"type": "enabled"}}
+
+
+def test_kimi_k26_thinking_enabled_with_openrouter_prefix() -> None:
+    """OpenRouter-style names like moonshotai/kimi-k2.6 must trigger thinking."""
+    kw = _build_kwargs_for("openrouter", "moonshotai/kimi-k2.6", reasoning_effort="medium")
+    assert kw.get("extra_body") == {"thinking": {"type": "enabled"}}
+
+
+def test_moonshot_kimi_k26_temperature_override() -> None:
+    """Moonshot registry forces temperature 1.0 for kimi-k2.6 (API requirement)."""
+    kw = _build_kwargs_for("moonshot", "kimi-k2.6", reasoning_effort=None)
+    assert kw["temperature"] == 1.0
+
+
 def test_kimi_k25_thinking_disabled_with_openrouter_prefix() -> None:
     """OpenRouter names must NOT trigger thinking without reasoning_effort."""
     kw = _build_kwargs_for("openrouter", "moonshotai/kimi-k2.5", reasoning_effort=None)

From 368752e707f3e2ebb8f664a199e52a12710c57c9 Mon Sep 17 00:00:00 2001
From: hussein1362 <hussein.1362@gmail.com>
Date: Mon, 20 Apr 2026 21:19:26 +0300
Subject: [PATCH 06/32] fix(mcp): retry once on transient connection errors

When an MCP server restarts or a network connection drops between
tool calls, the existing session throws ClosedResourceError,
BrokenPipeError, ConnectionResetError, etc. Currently these are
caught as generic exceptions and returned as permanent failures
to the LLM, which then tells the user 'my tools are broken.'

This change adds a single automatic retry with a 1-second backoff
for transient connection-class errors in MCPToolWrapper,
MCPResourceWrapper, and MCPPromptWrapper. Non-transient errors
(ValueError, RuntimeError, McpError, etc.) are not retried.

The retry is conservative:
- Only 1 retry (not configurable, to keep the change minimal)
- Only for a specific set of connection-class exceptions
- Matched by exception class name to avoid importing anyio/etc.
- 1s sleep between attempts to allow the server to recover
- Clear logging distinguishes retried vs permanent failures

In production this eliminates most 'MCP tool call failed:
ClosedResourceError' noise when MCP bridge processes restart
(e.g. after config changes or OOM kills).

Tests: 22 new tests covering retry, exhaustion, non-transient
bypass, timeout bypass, and all three wrapper types.
---
 nanobot/agent/tools/mcp.py              | 299 ++++++++++++--------
 tests/agent/test_mcp_transient_retry.py | 344 ++++++++++++++++++++++++
 2 files changed, 534 insertions(+), 109 deletions(-)
 create mode 100644 tests/agent/test_mcp_transient_retry.py

diff --git a/nanobot/agent/tools/mcp.py b/nanobot/agent/tools/mcp.py
index 2aea19279..ab95b446c 100644
--- a/nanobot/agent/tools/mcp.py
+++ b/nanobot/agent/tools/mcp.py
@@ -10,6 +10,25 @@ from loguru import logger
 from nanobot.agent.tools.base import Tool
 from nanobot.agent.tools.registry import ToolRegistry
 
+# Transient connection errors that warrant a single retry.
+# These typically happen when an MCP server restarts or a network
+# connection is interrupted between calls.
+_TRANSIENT_EXC_NAMES: frozenset[str] = frozenset((
+    "ClosedResourceError",
+    "BrokenResourceError",
+    "EndOfStream",
+    "BrokenPipeError",
+    "ConnectionResetError",
+    "ConnectionRefusedError",
+    "ConnectionAbortedError",
+    "ConnectionError",
+))
+
+
+def _is_transient(exc: BaseException) -> bool:
+    """Check if an exception looks like a transient connection error."""
+    return type(exc).__name__ in _TRANSIENT_EXC_NAMES
+
 
 def _extract_nullable_branch(options: Any) -> tuple[dict[str, Any], bool] | None:
     """Return the single non-null branch for nullable unions."""
@@ -99,38 +118,61 @@ class MCPToolWrapper(Tool):
     async def execute(self, **kwargs: Any) -> str:
         from mcp import types
 
-        try:
-            result = await asyncio.wait_for(
-                self._session.call_tool(self._original_name, arguments=kwargs),
-                timeout=self._tool_timeout,
-            )
-        except asyncio.TimeoutError:
-            logger.warning("MCP tool '{}' timed out after {}s", self._name, self._tool_timeout)
-            return f"(MCP tool call timed out after {self._tool_timeout}s)"
-        except asyncio.CancelledError:
-            # MCP SDK's anyio cancel scopes can leak CancelledError on timeout/failure.
-            # Re-raise only if our task was externally cancelled (e.g. /stop).
-            task = asyncio.current_task()
-            if task is not None and task.cancelling() > 0:
-                raise
-            logger.warning("MCP tool '{}' was cancelled by server/SDK", self._name)
-            return "(MCP tool call was cancelled)"
-        except Exception as exc:
-            logger.exception(
-                "MCP tool '{}' failed: {}: {}",
-                self._name,
-                type(exc).__name__,
-                exc,
-            )
-            return f"(MCP tool call failed: {type(exc).__name__})"
-
-        parts = []
-        for block in result.content:
-            if isinstance(block, types.TextContent):
-                parts.append(block.text)
+        for attempt in range(2):  # At most 1 retry
+            try:
+                result = await asyncio.wait_for(
+                    self._session.call_tool(self._original_name, arguments=kwargs),
+                    timeout=self._tool_timeout,
+                )
+            except asyncio.TimeoutError:
+                logger.warning(
+                    "MCP tool '{}' timed out after {}s", self._name, self._tool_timeout
+                )
+                return f"(MCP tool call timed out after {self._tool_timeout}s)"
+            except asyncio.CancelledError:
+                # MCP SDK's anyio cancel scopes can leak CancelledError on timeout/failure.
+                # Re-raise only if our task was externally cancelled (e.g. /stop).
+                task = asyncio.current_task()
+                if task is not None and task.cancelling() > 0:
+                    raise
+                logger.warning("MCP tool '{}' was cancelled by server/SDK", self._name)
+                return "(MCP tool call was cancelled)"
+            except Exception as exc:
+                if _is_transient(exc):
+                    if attempt == 0:
+                        logger.warning(
+                            "MCP tool '{}' hit transient error ({}), retrying once...",
+                            self._name,
+                            type(exc).__name__,
+                        )
+                        await asyncio.sleep(1)  # Brief backoff before retry
+                        continue
+                    # Second transient failure — give up with retry-specific message
+                    logger.error(
+                        "MCP tool '{}' failed after retry: {}: {}",
+                        self._name,
+                        type(exc).__name__,
+                        exc,
+                    )
+                    return f"(MCP tool call failed after retry: {type(exc).__name__})"
+                logger.exception(
+                    "MCP tool '{}' failed: {}: {}",
+                    self._name,
+                    type(exc).__name__,
+                    exc,
+                )
+                return f"(MCP tool call failed: {type(exc).__name__})"
             else:
-                parts.append(str(block))
-        return "\n".join(parts) or "(no output)"
+                # Success — extract result
+                parts = []
+                for block in result.content:
+                    if isinstance(block, types.TextContent):
+                        parts.append(block.text)
+                    else:
+                        parts.append(str(block))
+                return "\n".join(parts) or "(no output)"
+
+        return "(MCP tool call failed)"  # Unreachable, but satisfies type checkers
 
 
 class MCPResourceWrapper(Tool):
@@ -168,40 +210,59 @@ class MCPResourceWrapper(Tool):
     async def execute(self, **kwargs: Any) -> str:
         from mcp import types
 
-        try:
-            result = await asyncio.wait_for(
-                self._session.read_resource(self._uri),
-                timeout=self._resource_timeout,
-            )
-        except asyncio.TimeoutError:
-            logger.warning(
-                "MCP resource '{}' timed out after {}s", self._name, self._resource_timeout
-            )
-            return f"(MCP resource read timed out after {self._resource_timeout}s)"
-        except asyncio.CancelledError:
-            task = asyncio.current_task()
-            if task is not None and task.cancelling() > 0:
-                raise
-            logger.warning("MCP resource '{}' was cancelled by server/SDK", self._name)
-            return "(MCP resource read was cancelled)"
-        except Exception as exc:
-            logger.exception(
-                "MCP resource '{}' failed: {}: {}",
-                self._name,
-                type(exc).__name__,
-                exc,
-            )
-            return f"(MCP resource read failed: {type(exc).__name__})"
-
-        parts: list[str] = []
-        for block in result.contents:
-            if isinstance(block, types.TextResourceContents):
-                parts.append(block.text)
-            elif isinstance(block, types.BlobResourceContents):
-                parts.append(f"[Binary resource: {len(block.blob)} bytes]")
+        for attempt in range(2):
+            try:
+                result = await asyncio.wait_for(
+                    self._session.read_resource(self._uri),
+                    timeout=self._resource_timeout,
+                )
+            except asyncio.TimeoutError:
+                logger.warning(
+                    "MCP resource '{}' timed out after {}s", self._name, self._resource_timeout
+                )
+                return f"(MCP resource read timed out after {self._resource_timeout}s)"
+            except asyncio.CancelledError:
+                task = asyncio.current_task()
+                if task is not None and task.cancelling() > 0:
+                    raise
+                logger.warning("MCP resource '{}' was cancelled by server/SDK", self._name)
+                return "(MCP resource read was cancelled)"
+            except Exception as exc:
+                if _is_transient(exc):
+                    if attempt == 0:
+                        logger.warning(
+                            "MCP resource '{}' hit transient error ({}), retrying once...",
+                            self._name,
+                            type(exc).__name__,
+                        )
+                        await asyncio.sleep(1)
+                        continue
+                    logger.error(
+                        "MCP resource '{}' failed after retry: {}: {}",
+                        self._name,
+                        type(exc).__name__,
+                        exc,
+                    )
+                    return f"(MCP resource read failed after retry: {type(exc).__name__})"
+                logger.exception(
+                    "MCP resource '{}' failed: {}: {}",
+                    self._name,
+                    type(exc).__name__,
+                    exc,
+                )
+                return f"(MCP resource read failed: {type(exc).__name__})"
             else:
-                parts.append(str(block))
-        return "\n".join(parts) or "(no output)"
+                parts: list[str] = []
+                for block in result.contents:
+                    if isinstance(block, types.TextResourceContents):
+                        parts.append(block.text)
+                    elif isinstance(block, types.BlobResourceContents):
+                        parts.append(f"[Binary resource: {len(block.blob)} bytes]")
+                    else:
+                        parts.append(str(block))
+                return "\n".join(parts) or "(no output)"
+
+        return "(MCP resource read failed)"  # Unreachable
 
 
 class MCPPromptWrapper(Tool):
@@ -254,52 +315,72 @@ class MCPPromptWrapper(Tool):
         from mcp import types
         from mcp.shared.exceptions import McpError
 
-        try:
-            result = await asyncio.wait_for(
-                self._session.get_prompt(self._prompt_name, arguments=kwargs),
-                timeout=self._prompt_timeout,
-            )
-        except asyncio.TimeoutError:
-            logger.warning("MCP prompt '{}' timed out after {}s", self._name, self._prompt_timeout)
-            return f"(MCP prompt call timed out after {self._prompt_timeout}s)"
-        except asyncio.CancelledError:
-            task = asyncio.current_task()
-            if task is not None and task.cancelling() > 0:
-                raise
-            logger.warning("MCP prompt '{}' was cancelled by server/SDK", self._name)
-            return "(MCP prompt call was cancelled)"
-        except McpError as exc:
-            logger.error(
-                "MCP prompt '{}' failed: code={} message={}",
-                self._name,
-                exc.error.code,
-                exc.error.message,
-            )
-            return f"(MCP prompt call failed: {exc.error.message} [code {exc.error.code}])"
-        except Exception as exc:
-            logger.exception(
-                "MCP prompt '{}' failed: {}: {}",
-                self._name,
-                type(exc).__name__,
-                exc,
-            )
-            return f"(MCP prompt call failed: {type(exc).__name__})"
-
-        parts: list[str] = []
-        for message in result.messages:
-            content = message.content
-            # content is a single ContentBlock (not a list) in MCP SDK >= 1.x
-            if isinstance(content, types.TextContent):
-                parts.append(content.text)
-            elif isinstance(content, list):
-                for block in content:
-                    if isinstance(block, types.TextContent):
-                        parts.append(block.text)
-                    else:
-                        parts.append(str(block))
+        for attempt in range(2):
+            try:
+                result = await asyncio.wait_for(
+                    self._session.get_prompt(self._prompt_name, arguments=kwargs),
+                    timeout=self._prompt_timeout,
+                )
+            except asyncio.TimeoutError:
+                logger.warning(
+                    "MCP prompt '{}' timed out after {}s", self._name, self._prompt_timeout
+                )
+                return f"(MCP prompt call timed out after {self._prompt_timeout}s)"
+            except asyncio.CancelledError:
+                task = asyncio.current_task()
+                if task is not None and task.cancelling() > 0:
+                    raise
+                logger.warning("MCP prompt '{}' was cancelled by server/SDK", self._name)
+                return "(MCP prompt call was cancelled)"
+            except McpError as exc:
+                logger.error(
+                    "MCP prompt '{}' failed: code={} message={}",
+                    self._name,
+                    exc.error.code,
+                    exc.error.message,
+                )
+                return f"(MCP prompt call failed: {exc.error.message} [code {exc.error.code}])"
+            except Exception as exc:
+                if _is_transient(exc):
+                    if attempt == 0:
+                        logger.warning(
+                            "MCP prompt '{}' hit transient error ({}), retrying once...",
+                            self._name,
+                            type(exc).__name__,
+                        )
+                        await asyncio.sleep(1)
+                        continue
+                    logger.error(
+                        "MCP prompt '{}' failed after retry: {}: {}",
+                        self._name,
+                        type(exc).__name__,
+                        exc,
+                    )
+                    return f"(MCP prompt call failed after retry: {type(exc).__name__})"
+                logger.exception(
+                    "MCP prompt '{}' failed: {}: {}",
+                    self._name,
+                    type(exc).__name__,
+                    exc,
+                )
+                return f"(MCP prompt call failed: {type(exc).__name__})"
             else:
-                parts.append(str(content))
-        return "\n".join(parts) or "(no output)"
+                parts: list[str] = []
+                for message in result.messages:
+                    content = message.content
+                    if isinstance(content, types.TextContent):
+                        parts.append(content.text)
+                    elif isinstance(content, list):
+                        for block in content:
+                            if isinstance(block, types.TextContent):
+                                parts.append(block.text)
+                            else:
+                                parts.append(str(block))
+                    else:
+                        parts.append(str(content))
+                return "\n".join(parts) or "(no output)"
+
+        return "(MCP prompt call failed)"  # Unreachable
 
 
 async def connect_mcp_servers(
diff --git a/tests/agent/test_mcp_transient_retry.py b/tests/agent/test_mcp_transient_retry.py
new file mode 100644
index 000000000..823bb1e82
--- /dev/null
+++ b/tests/agent/test_mcp_transient_retry.py
@@ -0,0 +1,344 @@
+"""Tests for MCP tool/resource/prompt transient error retry."""
+
+import asyncio
+from types import SimpleNamespace
+from unittest.mock import AsyncMock, patch
+
+import pytest
+from mcp import types as mcp_types
+from mcp.shared.exceptions import McpError
+from mcp.types import ErrorData
+
+from nanobot.agent.tools.mcp import (
+    MCPPromptWrapper,
+    MCPResourceWrapper,
+    MCPToolWrapper,
+    _is_transient,
+)
+
+# ---------------------------------------------------------------------------
+# _is_transient helper
+# ---------------------------------------------------------------------------
+
+
+class _FakeClosedResourceError(Exception):
+    pass
+
+
+_FakeClosedResourceError.__name__ = "ClosedResourceError"
+
+
+class _FakeEndOfStreamError(Exception):
+    pass
+
+
+_FakeEndOfStreamError.__name__ = "EndOfStream"
+
+
+def test_is_transient_recognizes_closed_resource():
+    assert _is_transient(_FakeClosedResourceError("gone"))
+
+
+def test_is_transient_recognizes_broken_pipe():
+    assert _is_transient(BrokenPipeError("pipe"))
+
+
+def test_is_transient_recognizes_connection_reset():
+    assert _is_transient(ConnectionResetError("reset"))
+
+
+def test_is_transient_recognizes_connection_refused():
+    assert _is_transient(ConnectionRefusedError("refused"))
+
+
+def test_is_transient_recognizes_end_of_stream():
+    assert _is_transient(_FakeEndOfStreamError("eof"))
+
+
+def test_is_transient_rejects_value_error():
+    assert not _is_transient(ValueError("nope"))
+
+
+def test_is_transient_rejects_runtime_error():
+    assert not _is_transient(RuntimeError("nope"))
+
+
+def test_is_transient_rejects_timeout():
+    assert not _is_transient(TimeoutError("timeout"))
+
+
+# ---------------------------------------------------------------------------
+# MCPToolWrapper retry behaviour
+# ---------------------------------------------------------------------------
+
+
+def _make_tool_def(name="test_tool"):
+    return SimpleNamespace(
+        name=name,
+        description="A test tool",
+        inputSchema={"type": "object", "properties": {}},
+    )
+
+
+def _make_tool_result(text):
+    """Build a mock tool result with proper MCP TextContent."""
+    return SimpleNamespace(content=[mcp_types.TextContent(type="text", text=text)])
+
+
+@pytest.mark.asyncio
+async def test_tool_retries_on_transient_error():
+    """Tool should retry once when a transient error occurs, then succeed."""
+    session = AsyncMock()
+    result = _make_tool_result("ok")
+    exc = _FakeClosedResourceError("connection lost")
+    session.call_tool = AsyncMock(side_effect=[exc, result])
+
+    wrapper = MCPToolWrapper(session, "test_server", _make_tool_def(), tool_timeout=5)
+
+    with patch("nanobot.agent.tools.mcp.asyncio.sleep", new_callable=AsyncMock):
+        output = await wrapper.execute(foo="bar")
+
+    assert output == "ok"
+    assert session.call_tool.call_count == 2
+
+
+@pytest.mark.asyncio
+async def test_tool_fails_after_retry_exhausted():
+    """Tool should fail with retry message when both attempts hit transient errors."""
+    session = AsyncMock()
+    exc1 = _FakeClosedResourceError("still dead")
+    exc2 = _FakeClosedResourceError("still dead again")
+    session.call_tool = AsyncMock(side_effect=[exc1, exc2])
+
+    wrapper = MCPToolWrapper(session, "test_server", _make_tool_def(), tool_timeout=5)
+
+    with patch("nanobot.agent.tools.mcp.asyncio.sleep", new_callable=AsyncMock):
+        output = await wrapper.execute()
+
+    assert "failed after retry" in output
+    assert "ClosedResourceError" in output
+    assert session.call_tool.call_count == 2
+
+
+@pytest.mark.asyncio
+async def test_tool_no_retry_on_non_transient_error():
+    """Tool should NOT retry on non-transient errors like ValueError."""
+    session = AsyncMock()
+    session.call_tool = AsyncMock(side_effect=ValueError("bad input"))
+
+    wrapper = MCPToolWrapper(session, "test_server", _make_tool_def(), tool_timeout=5)
+    output = await wrapper.execute()
+
+    assert "ValueError" in output
+    assert "retry" not in output
+    assert session.call_tool.call_count == 1
+
+
+@pytest.mark.asyncio
+async def test_tool_no_retry_on_timeout():
+    """Timeouts should not trigger retry (they have their own handling)."""
+    session = AsyncMock()
+    session.call_tool = AsyncMock(side_effect=asyncio.TimeoutError())
+
+    wrapper = MCPToolWrapper(session, "test_server", _make_tool_def(), tool_timeout=5)
+    output = await wrapper.execute()
+
+    assert "timed out" in output
+    assert session.call_tool.call_count == 1
+
+
+@pytest.mark.asyncio
+async def test_tool_success_on_first_try_no_retry():
+    """Normal success path — no retry logic involved."""
+    session = AsyncMock()
+    result = _make_tool_result("hello")
+    session.call_tool = AsyncMock(return_value=result)
+
+    wrapper = MCPToolWrapper(session, "test_server", _make_tool_def(), tool_timeout=5)
+    output = await wrapper.execute()
+
+    assert output == "hello"
+    assert session.call_tool.call_count == 1
+
+
+@pytest.mark.asyncio
+async def test_tool_retry_on_connection_reset():
+    """ConnectionResetError (a stdlib exception) should also trigger retry."""
+    session = AsyncMock()
+    result = _make_tool_result("recovered")
+    session.call_tool = AsyncMock(
+        side_effect=[ConnectionResetError("reset by peer"), result]
+    )
+
+    wrapper = MCPToolWrapper(session, "test_server", _make_tool_def(), tool_timeout=5)
+
+    with patch("nanobot.agent.tools.mcp.asyncio.sleep", new_callable=AsyncMock):
+        output = await wrapper.execute()
+
+    assert output == "recovered"
+    assert session.call_tool.call_count == 2
+
+
+@pytest.mark.asyncio
+async def test_tool_retry_on_end_of_stream():
+    """EndOfStream (anyio) should trigger retry."""
+    session = AsyncMock()
+    result = _make_tool_result("back")
+    session.call_tool = AsyncMock(side_effect=[_FakeEndOfStreamError("eof"), result])
+
+    wrapper = MCPToolWrapper(session, "test_server", _make_tool_def(), tool_timeout=5)
+
+    with patch("nanobot.agent.tools.mcp.asyncio.sleep", new_callable=AsyncMock):
+        output = await wrapper.execute()
+
+    assert output == "back"
+    assert session.call_tool.call_count == 2
+
+
+# ---------------------------------------------------------------------------
+# MCPResourceWrapper retry behaviour
+# ---------------------------------------------------------------------------
+
+
+def _make_resource_def(name="test_resource"):
+    return SimpleNamespace(
+        name=name,
+        uri="file:///test",
+        description="A test resource",
+    )
+
+
+def _make_resource_result(text):
+    return SimpleNamespace(
+        contents=[mcp_types.TextResourceContents(uri="file:///test", text=text)]
+    )
+
+
+@pytest.mark.asyncio
+async def test_resource_retries_on_transient_error():
+    """Resource should retry once on transient connection error."""
+    session = AsyncMock()
+    result = _make_resource_result("data")
+    exc = _FakeClosedResourceError("gone")
+    session.read_resource = AsyncMock(side_effect=[exc, result])
+
+    wrapper = MCPResourceWrapper(session, "test_server", _make_resource_def())
+
+    with patch("nanobot.agent.tools.mcp.asyncio.sleep", new_callable=AsyncMock):
+        output = await wrapper.execute()
+
+    assert output == "data"
+    assert session.read_resource.call_count == 2
+
+
+@pytest.mark.asyncio
+async def test_resource_fails_after_retry_exhausted():
+    """Resource should fail with retry message when both attempts fail."""
+    session = AsyncMock()
+    exc = _FakeClosedResourceError("dead")
+    session.read_resource = AsyncMock(side_effect=[exc, exc])
+
+    wrapper = MCPResourceWrapper(session, "test_server", _make_resource_def())
+
+    with patch("nanobot.agent.tools.mcp.asyncio.sleep", new_callable=AsyncMock):
+        output = await wrapper.execute()
+
+    assert "failed after retry" in output
+    assert session.read_resource.call_count == 2
+
+
+@pytest.mark.asyncio
+async def test_resource_no_retry_on_non_transient():
+    """Resource should not retry on non-transient errors."""
+    session = AsyncMock()
+    session.read_resource = AsyncMock(side_effect=RuntimeError("bad"))
+
+    wrapper = MCPResourceWrapper(session, "test_server", _make_resource_def())
+    output = await wrapper.execute()
+
+    assert "RuntimeError" in output
+    assert session.read_resource.call_count == 1
+
+
+# ---------------------------------------------------------------------------
+# MCPPromptWrapper retry behaviour
+# ---------------------------------------------------------------------------
+
+
+def _make_prompt_def(name="test_prompt"):
+    return SimpleNamespace(
+        name=name,
+        description="A test prompt",
+        arguments=[],
+    )
+
+
+def _make_prompt_result(text):
+    return SimpleNamespace(
+        messages=[
+            SimpleNamespace(
+                content=mcp_types.TextContent(type="text", text=text),
+            )
+        ]
+    )
+
+
+@pytest.mark.asyncio
+async def test_prompt_retries_on_transient_error():
+    """Prompt should retry once on transient connection error."""
+    session = AsyncMock()
+    result = _make_prompt_result("prompt text")
+    exc = _FakeClosedResourceError("gone")
+    session.get_prompt = AsyncMock(side_effect=[exc, result])
+
+    wrapper = MCPPromptWrapper(session, "test_server", _make_prompt_def())
+
+    with patch("nanobot.agent.tools.mcp.asyncio.sleep", new_callable=AsyncMock):
+        output = await wrapper.execute()
+
+    assert output == "prompt text"
+    assert session.get_prompt.call_count == 2
+
+
+@pytest.mark.asyncio
+async def test_prompt_fails_after_retry_exhausted():
+    """Prompt should fail with retry message when both attempts fail."""
+    session = AsyncMock()
+    exc = _FakeClosedResourceError("dead")
+    session.get_prompt = AsyncMock(side_effect=[exc, exc])
+
+    wrapper = MCPPromptWrapper(session, "test_server", _make_prompt_def())
+
+    with patch("nanobot.agent.tools.mcp.asyncio.sleep", new_callable=AsyncMock):
+        output = await wrapper.execute()
+
+    assert "failed after retry" in output
+    assert session.get_prompt.call_count == 2
+
+
+@pytest.mark.asyncio
+async def test_prompt_no_retry_on_mcp_error():
+    """McpError (application-level) should NOT trigger retry."""
+    session = AsyncMock()
+    session.get_prompt = AsyncMock(
+        side_effect=McpError(ErrorData(code=-1, message="not found"))
+    )
+
+    wrapper = MCPPromptWrapper(session, "test_server", _make_prompt_def())
+    output = await wrapper.execute()
+
+    assert "not found" in output
+    assert session.get_prompt.call_count == 1
+
+
+@pytest.mark.asyncio
+async def test_prompt_no_retry_on_non_transient():
+    """Non-transient errors should not trigger retry for prompts."""
+    session = AsyncMock()
+    session.get_prompt = AsyncMock(side_effect=RuntimeError("bad"))
+
+    wrapper = MCPPromptWrapper(session, "test_server", _make_prompt_def())
+    output = await wrapper.execute()
+
+    assert "RuntimeError" in output
+    assert session.get_prompt.call_count == 1

From 82aa9efc028b268aa774dfe43e3a16567ca92672 Mon Sep 17 00:00:00 2001
From: Xubin Ren <xubinrencs@gmail.com>
Date: Tue, 21 Apr 2026 05:21:39 +0000
Subject: [PATCH 07/32] test(mcp): pin CancelledError short-circuits the retry
 loop

The retry branch is only reachable via `except Exception`, and
`CancelledError` inherits from `BaseException`, so today it naturally
bypasses the retry path and /stop still works.  Add one focused
regression test so any future refactor that widens the retry catch to
`BaseException`, re-orders the handlers, or adds `CancelledError` to
`_TRANSIENT_EXC_NAMES` fails CI instead of silently swallowing /stop.

Made-with: Cursor
---
 tests/agent/test_mcp_transient_retry.py | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/tests/agent/test_mcp_transient_retry.py b/tests/agent/test_mcp_transient_retry.py
index 823bb1e82..c7ef0c4ab 100644
--- a/tests/agent/test_mcp_transient_retry.py
+++ b/tests/agent/test_mcp_transient_retry.py
@@ -161,6 +161,30 @@ async def test_tool_success_on_first_try_no_retry():
     assert session.call_tool.call_count == 1
 
 
+@pytest.mark.asyncio
+async def test_tool_does_not_retry_on_cancelled_error():
+    """`asyncio.CancelledError` must short-circuit the retry loop.
+
+    Regression guard: the retry branch lives under ``except Exception``,
+    but ``CancelledError`` inherits from ``BaseException``, not
+    ``Exception``, so it naturally bypasses the retry branch today.  If a
+    future refactor ever widens the retry branch to ``BaseException`` (or
+    re-orders the handlers), ``/stop`` would start retrying instead of
+    cancelling — this test pins that invariant.
+    """
+    session = AsyncMock()
+    session.call_tool = AsyncMock(side_effect=asyncio.CancelledError())
+
+    wrapper = MCPToolWrapper(session, "test_server", _make_tool_def(), tool_timeout=5)
+
+    with patch("nanobot.agent.tools.mcp.asyncio.sleep", new_callable=AsyncMock) as mock_sleep:
+        output = await wrapper.execute()
+
+    assert "cancelled" in output
+    assert session.call_tool.call_count == 1
+    mock_sleep.assert_not_called()
+
+
 @pytest.mark.asyncio
 async def test_tool_retry_on_connection_reset():
     """ConnectionResetError (a stdlib exception) should also trigger retry."""

From ff8c28d5a8b5c1aae18693dfe1a7d781b4c8e92d Mon Sep 17 00:00:00 2001
From: jr_blue_551 <johnrowe551@gmail.com>
Date: Wed, 18 Mar 2026 19:10:57 +0000
Subject: [PATCH 08/32] agent: use ContextVar for tool routing context

---
 nanobot/agent/tools/cron.py    |  16 ++---
 nanobot/agent/tools/message.py |  41 ++++++++-----
 nanobot/agent/tools/spawn.py   |  19 +++---
 tests/test_tool_contextvars.py | 103 +++++++++++++++++++++++++++++++++
 4 files changed, 150 insertions(+), 29 deletions(-)
 create mode 100644 tests/test_tool_contextvars.py

diff --git a/nanobot/agent/tools/cron.py b/nanobot/agent/tools/cron.py
index 7124a2a74..127ac6c90 100644
--- a/nanobot/agent/tools/cron.py
+++ b/nanobot/agent/tools/cron.py
@@ -58,14 +58,14 @@ class CronTool(Tool):
     def __init__(self, cron_service: CronService, default_timezone: str = "UTC"):
         self._cron = cron_service
         self._default_timezone = default_timezone
-        self._channel = ""
-        self._chat_id = ""
+        self._channel: ContextVar[str] = ContextVar("cron_channel", default="")
+        self._chat_id: ContextVar[str] = ContextVar("cron_chat_id", default="")
         self._in_cron_context: ContextVar[bool] = ContextVar("cron_in_context", default=False)
 
     def set_context(self, channel: str, chat_id: str) -> None:
         """Set the current session context for delivery."""
-        self._channel = channel
-        self._chat_id = chat_id
+        self._channel.set(channel)
+        self._chat_id.set(chat_id)
 
     def set_cron_context(self, active: bool):
         """Mark whether the tool is executing inside a cron job callback."""
@@ -155,7 +155,9 @@ class CronTool(Tool):
                 "describing what to do when the job triggers "
                 "(e.g. the reminder text). Retry including message=\"...\"."
             )
-        if not self._channel or not self._chat_id:
+        channel = self._channel.get()
+        chat_id = self._chat_id.get()
+        if not channel or not chat_id:
             return "Error: no session context (channel/chat_id)"
         if tz and not cron_expr:
             return "Error: tz can only be used with cron_expr"
@@ -194,8 +196,8 @@ class CronTool(Tool):
             schedule=schedule,
             message=message,
             deliver=deliver,
-            channel=self._channel,
-            to=self._chat_id,
+            channel=channel,
+            to=chat_id,
             delete_after_run=delete_after,
         )
         return f"Created job '{job.name}' (id: {job.id})"
diff --git a/nanobot/agent/tools/message.py b/nanobot/agent/tools/message.py
index 524cadcf5..ee81effbd 100644
--- a/nanobot/agent/tools/message.py
+++ b/nanobot/agent/tools/message.py
@@ -1,5 +1,6 @@
 """Message tool for sending messages to users."""
 
+from contextvars import ContextVar
 from typing import Any, Awaitable, Callable
 
 from nanobot.agent.tools.base import Tool, tool_parameters
@@ -30,16 +31,19 @@ class MessageTool(Tool):
         default_message_id: str | None = None,
     ):
         self._send_callback = send_callback
-        self._default_channel = default_channel
-        self._default_chat_id = default_chat_id
-        self._default_message_id = default_message_id
-        self._sent_in_turn: bool = False
+        self._default_channel: ContextVar[str] = ContextVar("message_default_channel", default=default_channel)
+        self._default_chat_id: ContextVar[str] = ContextVar("message_default_chat_id", default=default_chat_id)
+        self._default_message_id: ContextVar[str | None] = ContextVar(
+            "message_default_message_id",
+            default=default_message_id,
+        )
+        self._sent_in_turn_var: ContextVar[bool] = ContextVar("message_sent_in_turn", default=False)
 
     def set_context(self, channel: str, chat_id: str, message_id: str | None = None) -> None:
         """Set the current message context."""
-        self._default_channel = channel
-        self._default_chat_id = chat_id
-        self._default_message_id = message_id
+        self._default_channel.set(channel)
+        self._default_chat_id.set(chat_id)
+        self._default_message_id.set(message_id)
 
     def set_send_callback(self, callback: Callable[[OutboundMessage], Awaitable[None]]) -> None:
         """Set the callback for sending messages."""
@@ -49,6 +53,14 @@ class MessageTool(Tool):
         """Reset per-turn send tracking."""
         self._sent_in_turn = False
 
+    @property
+    def _sent_in_turn(self) -> bool:
+        return self._sent_in_turn_var.get()
+
+    @_sent_in_turn.setter
+    def _sent_in_turn(self, value: bool) -> None:
+        self._sent_in_turn_var.set(value)
+
     @property
     def name(self) -> str:
         return "message"
@@ -73,16 +85,19 @@ class MessageTool(Tool):
     ) -> str:
         from nanobot.utils.helpers import strip_think
         content = strip_think(content)
-        
-        channel = channel or self._default_channel
-        chat_id = chat_id or self._default_chat_id
+
+        default_channel = self._default_channel.get()
+        default_chat_id = self._default_chat_id.get()
+
+        channel = channel or default_channel
+        chat_id = chat_id or default_chat_id
         # Only inherit default message_id when targeting the same channel+chat.
         # Cross-chat sends must not carry the original message_id, because
         # some channels (e.g. Feishu) use it to determine the target
         # conversation via their Reply API, which would route the message
         # to the wrong chat entirely.
-        if channel == self._default_channel and chat_id == self._default_chat_id:
-            message_id = message_id or self._default_message_id
+        if channel == default_channel and chat_id == default_chat_id:
+            message_id = message_id or self._default_message_id.get()
         else:
             message_id = None
 
@@ -104,7 +119,7 @@ class MessageTool(Tool):
 
         try:
             await self._send_callback(msg)
-            if channel == self._default_channel and chat_id == self._default_chat_id:
+            if channel == default_channel and chat_id == default_chat_id:
                 self._sent_in_turn = True
             media_info = f" with {len(media)} attachments" if media else ""
             return f"Message sent to {channel}:{chat_id}{media_info}"
diff --git a/nanobot/agent/tools/spawn.py b/nanobot/agent/tools/spawn.py
index 8ffb438bf..beda058a8 100644
--- a/nanobot/agent/tools/spawn.py
+++ b/nanobot/agent/tools/spawn.py
@@ -1,5 +1,6 @@
 """Spawn tool for creating background subagents."""
 
+from contextvars import ContextVar
 from typing import TYPE_CHECKING, Any
 
 from nanobot.agent.tools.base import Tool, tool_parameters
@@ -21,15 +22,15 @@ class SpawnTool(Tool):
 
     def __init__(self, manager: "SubagentManager"):
         self._manager = manager
-        self._origin_channel = "cli"
-        self._origin_chat_id = "direct"
-        self._session_key = "cli:direct"
+        self._origin_channel: ContextVar[str] = ContextVar("spawn_origin_channel", default="cli")
+        self._origin_chat_id: ContextVar[str] = ContextVar("spawn_origin_chat_id", default="direct")
+        self._session_key: ContextVar[str] = ContextVar("spawn_session_key", default="cli:direct")
 
     def set_context(self, channel: str, chat_id: str, effective_key: str | None = None) -> None:
         """Set the origin context for subagent announcements."""
-        self._origin_channel = channel
-        self._origin_chat_id = chat_id
-        self._session_key = effective_key or f"{channel}:{chat_id}"
+        self._origin_channel.set(channel)
+        self._origin_chat_id.set(chat_id)
+        self._session_key.set(effective_key or f"{channel}:{chat_id}")
 
     @property
     def name(self) -> str:
@@ -50,7 +51,7 @@ class SpawnTool(Tool):
         return await self._manager.spawn(
             task=task,
             label=label,
-            origin_channel=self._origin_channel,
-            origin_chat_id=self._origin_chat_id,
-            session_key=self._session_key,
+            origin_channel=self._origin_channel.get(),
+            origin_chat_id=self._origin_chat_id.get(),
+            session_key=self._session_key.get(),
         )
diff --git a/tests/test_tool_contextvars.py b/tests/test_tool_contextvars.py
new file mode 100644
index 000000000..3cfef9515
--- /dev/null
+++ b/tests/test_tool_contextvars.py
@@ -0,0 +1,103 @@
+from __future__ import annotations
+
+import asyncio
+
+import pytest
+
+from nanobot.agent.tools.cron import CronTool
+from nanobot.agent.tools.message import MessageTool
+from nanobot.agent.tools.spawn import SpawnTool
+from nanobot.cron.service import CronService
+
+
+@pytest.mark.asyncio
+async def test_message_tool_keeps_task_local_context() -> None:
+    seen: list[tuple[str, str, str]] = []
+    entered = asyncio.Event()
+    release = asyncio.Event()
+
+    async def send_callback(msg):
+        seen.append((msg.channel, msg.chat_id, msg.content))
+        return None
+
+    tool = MessageTool(send_callback=send_callback)
+
+    async def task_one() -> str:
+        tool.set_context("feishu", "chat-a")
+        entered.set()
+        await release.wait()
+        return await tool.execute(content="one")
+
+    async def task_two() -> str:
+        await entered.wait()
+        tool.set_context("email", "chat-b")
+        release.set()
+        return await tool.execute(content="two")
+
+    result_one, result_two = await asyncio.gather(task_one(), task_two())
+
+    assert result_one == "Message sent to feishu:chat-a"
+    assert result_two == "Message sent to email:chat-b"
+    assert ("feishu", "chat-a", "one") in seen
+    assert ("email", "chat-b", "two") in seen
+
+
+@pytest.mark.asyncio
+async def test_spawn_tool_keeps_task_local_context() -> None:
+    seen: list[tuple[str, str, str]] = []
+    entered = asyncio.Event()
+    release = asyncio.Event()
+
+    class _Manager:
+        async def spawn(self, *, task: str, label: str | None, origin_channel: str, origin_chat_id: str, session_key: str) -> str:
+            seen.append((origin_channel, origin_chat_id, session_key))
+            return f"{origin_channel}:{origin_chat_id}:{task}"
+
+    tool = SpawnTool(_Manager())
+
+    async def task_one() -> str:
+        tool.set_context("whatsapp", "chat-a")
+        entered.set()
+        await release.wait()
+        return await tool.execute(task="one")
+
+    async def task_two() -> str:
+        await entered.wait()
+        tool.set_context("telegram", "chat-b")
+        release.set()
+        return await tool.execute(task="two")
+
+    result_one, result_two = await asyncio.gather(task_one(), task_two())
+
+    assert result_one == "whatsapp:chat-a:one"
+    assert result_two == "telegram:chat-b:two"
+    assert ("whatsapp", "chat-a", "whatsapp:chat-a") in seen
+    assert ("telegram", "chat-b", "telegram:chat-b") in seen
+
+
+@pytest.mark.asyncio
+async def test_cron_tool_keeps_task_local_context(tmp_path) -> None:
+    tool = CronTool(CronService(tmp_path / "jobs.json"))
+    entered = asyncio.Event()
+    release = asyncio.Event()
+
+    async def task_one() -> str:
+        tool.set_context("feishu", "chat-a")
+        entered.set()
+        await release.wait()
+        return await tool.execute(action="add", message="first", every_seconds=60)
+
+    async def task_two() -> str:
+        await entered.wait()
+        tool.set_context("email", "chat-b")
+        release.set()
+        return await tool.execute(action="add", message="second", every_seconds=60)
+
+    result_one, result_two = await asyncio.gather(task_one(), task_two())
+
+    assert result_one.startswith("Created job")
+    assert result_two.startswith("Created job")
+
+    jobs = tool._cron.list_jobs()
+    assert {job.payload.channel for job in jobs} == {"feishu", "email"}
+    assert {job.payload.to for job in jobs} == {"chat-a", "chat-b"}

From 409afe1a3d126e4e79f9b95da1df236d4fbd95b0 Mon Sep 17 00:00:00 2001
From: chengyongru <chengyongru.ai@gmail.com>
Date: Tue, 21 Apr 2026 11:18:14 +0800
Subject: [PATCH 09/32] test(tools): add basic regression tests for ContextVar
 routing context

---
 tests/test_tool_contextvars.py | 96 ++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)

diff --git a/tests/test_tool_contextvars.py b/tests/test_tool_contextvars.py
index 3cfef9515..1303f0001 100644
--- a/tests/test_tool_contextvars.py
+++ b/tests/test_tool_contextvars.py
@@ -101,3 +101,99 @@ async def test_cron_tool_keeps_task_local_context(tmp_path) -> None:
     jobs = tool._cron.list_jobs()
     assert {job.payload.channel for job in jobs} == {"feishu", "email"}
     assert {job.payload.to for job in jobs} == {"chat-a", "chat-b"}
+
+
+# --- Basic single-task regression tests ---
+
+
+@pytest.mark.asyncio
+async def test_message_tool_basic_set_context_and_execute() -> None:
+    """Single task: set_context then execute should route correctly."""
+    seen: list[tuple[str, str, str]] = []
+
+    async def send_callback(msg):
+        seen.append((msg.channel, msg.chat_id, msg.content))
+
+    tool = MessageTool(send_callback=send_callback)
+    tool.set_context("telegram", "chat-123", "msg-456")
+
+    result = await tool.execute(content="hello")
+    assert result == "Message sent to telegram:chat-123"
+    assert seen == [("telegram", "chat-123", "hello")]
+
+
+@pytest.mark.asyncio
+async def test_message_tool_default_values_without_set_context() -> None:
+    """Without set_context, constructor defaults should be used."""
+    seen: list[tuple[str, str, str]] = []
+
+    async def send_callback(msg):
+        seen.append((msg.channel, msg.chat_id, msg.content))
+
+    tool = MessageTool(
+        send_callback=send_callback,
+        default_channel="discord",
+        default_chat_id="general",
+    )
+
+    result = await tool.execute(content="hi")
+    assert result == "Message sent to discord:general"
+    assert seen == [("discord", "general", "hi")]
+
+
+@pytest.mark.asyncio
+async def test_spawn_tool_basic_set_context_and_execute() -> None:
+    """Single task: set_context then execute should pass correct origin."""
+    seen: list[tuple[str, str, str]] = []
+
+    class _Manager:
+        async def spawn(self, *, task, label, origin_channel, origin_chat_id, session_key):
+            seen.append((origin_channel, origin_chat_id, session_key))
+            return f"ok: {task}"
+
+    tool = SpawnTool(_Manager())
+    tool.set_context("feishu", "chat-abc")
+
+    result = await tool.execute(task="do something")
+    assert result == "ok: do something"
+    assert seen == [("feishu", "chat-abc", "feishu:chat-abc")]
+
+
+@pytest.mark.asyncio
+async def test_spawn_tool_default_values_without_set_context() -> None:
+    """Without set_context, default cli:direct should be used."""
+    seen: list[tuple[str, str, str]] = []
+
+    class _Manager:
+        async def spawn(self, *, task, label, origin_channel, origin_chat_id, session_key):
+            seen.append((origin_channel, origin_chat_id, session_key))
+            return "ok"
+
+    tool = SpawnTool(_Manager())
+
+    await tool.execute(task="test")
+    assert seen == [("cli", "direct", "cli:direct")]
+
+
+@pytest.mark.asyncio
+async def test_cron_tool_basic_set_context_and_execute(tmp_path) -> None:
+    """Single task: set_context then add job should use correct target."""
+    tool = CronTool(CronService(tmp_path / "jobs.json"))
+    tool.set_context("wechat", "user-789")
+
+    result = await tool.execute(action="add", message="standup", every_seconds=300)
+    assert result.startswith("Created job")
+
+    jobs = tool._cron.list_jobs()
+    assert len(jobs) == 1
+    assert jobs[0].payload.channel == "wechat"
+    assert jobs[0].payload.to == "user-789"
+
+
+@pytest.mark.asyncio
+async def test_cron_tool_no_context_returns_error(tmp_path) -> None:
+    """Without set_context, add should fail with a clear error."""
+    tool = CronTool(CronService(tmp_path / "jobs.json"))
+
+    result = await tool.execute(action="add", message="test", every_seconds=60)
+    assert result == "Error: no session context (channel/chat_id)"

From c0a11c7cf4c4efd95dc261200f43187f333525ba Mon Sep 17 00:00:00 2001
From: Muata Kamdibe <mkamdibe@gmail.com>
Date: Mon, 20 Apr 2026 16:28:03 -0400
Subject: [PATCH 10/32] fix(memory): harden cursor recovery against non-integer
 corruption

_next_cursor now checks isinstance(cursor, int) before arithmetic,
falling back to a reverse scan of all entries when the last entry's
cursor is corrupted. read_unprocessed_history skips entries with
non-int cursors instead of crashing on comparison.

Root cause: external callers (cron jobs, plugins) occasionally wrote
string cursors to history.jsonl, which blocked all subsequent
append_history calls with TypeError/ValueError.

Includes 7 regression tests covering string, float, null, and list
cursor types.
---
 nanobot/agent/memory.py             |  17 ++++-
 tests/agent/test_cursor_recovery.py | 110 ++++++++++++++++++++++++++++
 2 files changed, 125 insertions(+), 2 deletions(-)
 create mode 100644 tests/agent/test_cursor_recovery.py

diff --git a/nanobot/agent/memory.py b/nanobot/agent/memory.py
index 60b542082..98c62bc5d 100644
--- a/nanobot/agent/memory.py
+++ b/nanobot/agent/memory.py
@@ -256,12 +256,25 @@ class MemoryStore:
         # Fallback: read last line's cursor from the JSONL file.
         last = self._read_last_entry()
         if last and last.get("cursor"):
-            return last["cursor"] + 1
+            cursor = last["cursor"]
+            if isinstance(cursor, int):
+                return cursor + 1
+            # Corrupted (non-int) cursor — scan all entries for the highest valid one.
+            entries = self._read_entries()
+            for entry in reversed(entries):
+                c = entry.get("cursor")
+                if isinstance(c, int):
+                    return c + 1
+            return 1
         return 1
 
     def read_unprocessed_history(self, since_cursor: int) -> list[dict[str, Any]]:
         """Return history entries with cursor > *since_cursor*."""
-        return [e for e in self._read_entries() if e.get("cursor", 0) > since_cursor]
+        return [
+            e
+            for e in self._read_entries()
+            if isinstance(e.get("cursor"), int) and e["cursor"] > since_cursor
+        ]
 
     def compact_history(self) -> None:
         """Drop oldest entries if the file exceeds *max_history_entries*."""
diff --git a/tests/agent/test_cursor_recovery.py b/tests/agent/test_cursor_recovery.py
new file mode 100644
index 000000000..df13e922c
--- /dev/null
+++ b/tests/agent/test_cursor_recovery.py
@@ -0,0 +1,110 @@
+"""Regression tests for cursor recovery after non-integer cursor corruption.
+
+Root cause: cron jobs and other callers occasionally wrote string cursors to
+history.jsonl (e.g. ``"cursor": "abc"``).  The original ``_next_cursor`` and
+``read_unprocessed_history`` assumed integer cursors and crashed with
+``TypeError`` / ``ValueError``, blocking all subsequent history appends.
+"""
+
+import json
+
+import pytest
+
+from nanobot.agent.memory import MemoryStore
+
+
+@pytest.fixture
+def store(tmp_path):
+    return MemoryStore(tmp_path)
+
+
+class TestNextCursorRecovery:
+    """``_next_cursor`` must recover a valid int even when the last entry's
+    cursor is corrupted (non-int)."""
+
+    def test_string_cursor_falls_back_to_scan(self, store):
+        """Last entry has a string cursor — scan backwards to find a valid int."""
+        store.history_file.write_text(
+            '{"cursor": 5, "timestamp": "2026-04-01 10:00", "content": "good"}\n'
+            '{"cursor": 6, "timestamp": "2026-04-01 10:01", "content": "also good"}\n'
+            '{"cursor": "bad", "timestamp": "2026-04-01 10:02", "content": "corrupted"}\n',
+            encoding="utf-8",
+        )
+        # Delete .cursor file so _next_cursor falls back to reading JSONL
+        store._cursor_file.unlink(missing_ok=True)
+        cursor = store.append_history("recovered event")
+        assert cursor == 7
+
+    def test_all_corrupted_cursors_return_one(self, store):
+        """Every entry has a non-int cursor — should restart at 1."""
+        store.history_file.write_text(
+            '{"cursor": "a", "timestamp": "2026-04-01 10:00", "content": "bad1"}\n'
+            '{"cursor": "b", "timestamp": "2026-04-01 10:01", "content": "bad2"}\n',
+            encoding="utf-8",
+        )
+        store._cursor_file.unlink(missing_ok=True)
+        cursor = store.append_history("fresh start")
+        assert cursor == 1
+
+    def test_non_int_cursor_types(self, store):
+        """Float, None, list — all non-int types handled gracefully."""
+        store.history_file.write_text(
+            '{"cursor": 3, "timestamp": "2026-04-01 10:00", "content": "valid"}\n'
+            '{"cursor": 3.5, "timestamp": "2026-04-01 10:01", "content": "float"}\n'
+            '{"cursor": null, "timestamp": "2026-04-01 10:02", "content": "null"}\n'
+            '{"cursor": [1,2], "timestamp": "2026-04-01 10:03", "content": "list"}\n',
+            encoding="utf-8",
+        )
+        store._cursor_file.unlink(missing_ok=True)
+        cursor = store.append_history("handles weird types")
+        assert cursor == 4
+
+    def test_cursor_file_with_string_content(self, store):
+        """Cursor file contains a non-numeric string — should fall back."""
+        store._cursor_file.write_text("not_a_number", encoding="utf-8")
+        # Also add valid JSONL so the fallback scan finds something
+        store.history_file.write_text(
+            '{"cursor": 10, "timestamp": "2026-04-01 10:00", "content": "valid"}\n',
+            encoding="utf-8",
+        )
+        cursor = store.append_history("after bad cursor file")
+        assert cursor == 11
+
+
+class TestReadUnprocessedWithCorruption:
+    """``read_unprocessed_history`` must skip entries with non-int cursors
+    instead of crashing on comparison."""
+
+    def test_skips_string_cursor_entries(self, store):
+        """Entries with string cursors are silently skipped."""
+        store.history_file.write_text(
+            '{"cursor": 1, "timestamp": "2026-04-01 10:00", "content": "valid1"}\n'
+            '{"cursor": "bad", "timestamp": "2026-04-01 10:01", "content": "corrupted"}\n'
+            '{"cursor": 3, "timestamp": "2026-04-01 10:02", "content": "valid3"}\n',
+            encoding="utf-8",
+        )
+        entries = store.read_unprocessed_history(since_cursor=0)
+        assert len(entries) == 2
+        assert [e["cursor"] for e in entries] == [1, 3]
+
+    def test_mixed_corruption_preserves_order(self, store):
+        """Valid entries maintain correct order despite corrupt neighbors."""
+        store.history_file.write_text(
+            '{"cursor": "x", "timestamp": "2026-04-01 10:00", "content": "bad"}\n'
+            '{"cursor": 2, "timestamp": "2026-04-01 10:01", "content": "good2"}\n'
+            '{"cursor": null, "timestamp": "2026-04-01 10:02", "content": "also bad"}\n'
+            '{"cursor": 4, "timestamp": "2026-04-01 10:03", "content": "good4"}\n',
+            encoding="utf-8",
+        )
+        entries = store.read_unprocessed_history(since_cursor=0)
+        assert [e["cursor"] for e in entries] == [2, 4]
+
+    def test_all_valid_still_works(self, store):
+        """Normal operation unaffected — baseline regression check."""
+        store.append_history("event 1")
+        store.append_history("event 2")
+        store.append_history("event 3")
+        entries = store.read_unprocessed_history(since_cursor=1)
+        assert len(entries) == 2
+        assert entries[0]["cursor"] == 2
+        assert entries[1]["cursor"] == 3

From c1957e14ff01cf04928aaacb2693cf7ca41f0116 Mon Sep 17 00:00:00 2001
From: Xubin Ren <xubinrencs@gmail.com>
Date: Tue, 21 Apr 2026 05:54:17 +0000
Subject: [PATCH 11/32] refactor(memory): centralize cursor validation behind a
 single gate
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Move the non-int cursor guard out of the two consumer sites and into a
shared ``_iter_valid_entries`` iterator so the invariant lives in one
place.  Closes three gaps left by the original fix:

* ``bool`` is now rejected — ``isinstance(True, int)`` is ``True`` in
  Python, so the previous guard silently treated ``{"cursor": true}`` as
  cursor ``1``.
* Recovery now returns ``max(valid cursors) + 1``.  Under adversarial
  corruption "first int scanning in reverse" is not the same thing, and
  only ``max`` keeps the recovered cursor strictly greater than every
  legitimate cursor still on disk.
* Non-int cursors are logged exactly once per ``MemoryStore``.  Silently
  dropping corrupted entries hides the root cause (an external writer
  to ``memory/history.jsonl``); rate-limiting keeps the log clean when
  the same poisoned file is read every turn.

All 7 tests from the original fix pass unchanged; 3 new tests pin the
invariants above.

Made-with: Cursor
---
 nanobot/agent/memory.py             | 62 +++++++++++++++--------
 tests/agent/test_cursor_recovery.py | 78 +++++++++++++++++++++++++++++
 2 files changed, 118 insertions(+), 22 deletions(-)

diff --git a/nanobot/agent/memory.py b/nanobot/agent/memory.py
index 98c62bc5d..60bc9accb 100644
--- a/nanobot/agent/memory.py
+++ b/nanobot/agent/memory.py
@@ -8,7 +8,7 @@ import re
 import weakref
 from datetime import datetime
 from pathlib import Path
-from typing import TYPE_CHECKING, Any, Callable
+from typing import TYPE_CHECKING, Any, Callable, Iterator
 
 from loguru import logger
 
@@ -49,6 +49,7 @@ class MemoryStore:
         self.user_file = workspace / "USER.md"
         self._cursor_file = self.memory_dir / ".cursor"
         self._dream_cursor_file = self.memory_dir / ".dream_cursor"
+        self._corruption_logged = False  # rate-limit non-int cursor warning
         self._git = GitStore(workspace, tracked_files=[
             "SOUL.md", "USER.md", "memory/MEMORY.md",
         ])
@@ -246,35 +247,52 @@ class MemoryStore:
         self._cursor_file.write_text(str(cursor), encoding="utf-8")
         return cursor
 
+    @staticmethod
+    def _valid_cursor(value: Any) -> int | None:
+        """Int cursors only — reject bool (``isinstance(True, int)`` is True)."""
+        if isinstance(value, bool) or not isinstance(value, int):
+            return None
+        return value
+
+    def _iter_valid_entries(self) -> Iterator[tuple[dict[str, Any], int]]:
+        """Yield ``(entry, cursor)`` for entries with int cursors; warn once on corruption."""
+        poisoned: Any = None
+        for entry in self._read_entries():
+            raw = entry.get("cursor")
+            if raw is None:
+                continue
+            cursor = self._valid_cursor(raw)
+            if cursor is None:
+                poisoned = raw
+                continue
+            yield entry, cursor
+        if poisoned is not None and not self._corruption_logged:
+            self._corruption_logged = True
+            logger.warning(
+                "history.jsonl contains a non-int cursor ({!r}); dropping it. "
+                "Usually caused by an external writer; further occurrences suppressed.",
+                poisoned,
+            )
+
     def _next_cursor(self) -> int:
-        """Read the current cursor counter and return next value."""
+        """Read the current cursor counter and return the next value."""
         if self._cursor_file.exists():
             try:
                 return int(self._cursor_file.read_text(encoding="utf-8").strip()) + 1
             except (ValueError, OSError):
                 pass
-        # Fallback: read last line's cursor from the JSONL file.
-        last = self._read_last_entry()
-        if last and last.get("cursor"):
-            cursor = last["cursor"]
-            if isinstance(cursor, int):
-                return cursor + 1
-            # Corrupted (non-int) cursor — scan all entries for the highest valid one.
-            entries = self._read_entries()
-            for entry in reversed(entries):
-                c = entry.get("cursor")
-                if isinstance(c, int):
-                    return c + 1
-            return 1
-        return 1
+        # Fast path: trust the tail when intact.  Otherwise scan the whole
+        # file and take ``max`` — that stays correct even if the monotonic
+        # invariant was broken by external writes.
+        last = self._read_last_entry() or {}
+        cursor = self._valid_cursor(last.get("cursor"))
+        if cursor is not None:
+            return cursor + 1
+        return max((c for _, c in self._iter_valid_entries()), default=0) + 1
 
     def read_unprocessed_history(self, since_cursor: int) -> list[dict[str, Any]]:
-        """Return history entries with cursor > *since_cursor*."""
-        return [
-            e
-            for e in self._read_entries()
-            if isinstance(e.get("cursor"), int) and e["cursor"] > since_cursor
-        ]
+        """Return history entries with a valid cursor > *since_cursor*."""
+        return [e for e, c in self._iter_valid_entries() if c > since_cursor]
 
     def compact_history(self) -> None:
         """Drop oldest entries if the file exceeds *max_history_entries*."""
diff --git a/tests/agent/test_cursor_recovery.py b/tests/agent/test_cursor_recovery.py
index df13e922c..1963da65c 100644
--- a/tests/agent/test_cursor_recovery.py
+++ b/tests/agent/test_cursor_recovery.py
@@ -108,3 +108,81 @@ class TestReadUnprocessedWithCorruption:
         assert len(entries) == 2
         assert entries[0]["cursor"] == 2
         assert entries[1]["cursor"] == 3
+
+
+class TestCursorValidationInvariant:
+    """First-principles checks: the cursor validity rules and the
+    observability we layer on top of them."""
+
+    def test_bool_cursor_rejected(self, store):
+        """``isinstance(True, int) is True`` in Python; the guard must
+        still treat ``{"cursor": true}`` as corruption, otherwise a
+        boolean silently becomes cursor ``1`` / ``0`` downstream.
+        """
+        assert MemoryStore._valid_cursor(True) is None
+        assert MemoryStore._valid_cursor(False) is None
+        assert MemoryStore._valid_cursor(5) == 5
+        assert MemoryStore._valid_cursor(0) == 0
+
+        store.history_file.write_text(
+            '{"cursor": 4, "timestamp": "2026-04-01 10:00", "content": "real"}\n'
+            '{"cursor": true, "timestamp": "2026-04-01 10:01", "content": "bool"}\n',
+            encoding="utf-8",
+        )
+        store._cursor_file.unlink(missing_ok=True)
+        assert store.append_history("next") == 5
+
+        entries = store.read_unprocessed_history(since_cursor=0)
+        assert [e["cursor"] for e in entries] == [4, 5]
+
+    def test_next_cursor_returns_max_not_just_last_int(self, store):
+        """Under adversarial corruption, file order ≠ numeric order.  The
+        recovery scan must return ``max(valid cursors) + 1``, not the
+        first int seen from the tail, so the returned cursor is strictly
+        greater than every legitimate cursor already on disk.
+        """
+        # Tail is corrupt → recovery scan runs.  Valid cursors are 100
+        # and 5, in that order on disk; a naive "first int from the tail"
+        # recovery would return 6, which would then silently collide with
+        # the existing cursor 100.  ``max`` is the only safe choice.
+        store.history_file.write_text(
+            '{"cursor": 100, "timestamp": "2026-04-01 10:00", "content": "high"}\n'
+            '{"cursor": 5,   "timestamp": "2026-04-01 10:01", "content": "out of order"}\n'
+            '{"cursor": "poison", "timestamp": "2026-04-01 10:02", "content": "tail corrupt"}\n',
+            encoding="utf-8",
+        )
+        store._cursor_file.unlink(missing_ok=True)
+        assert store.append_history("safe next") == 101
+
+    def test_corruption_is_logged_exactly_once_per_store(self, store, caplog):
+        """Observability without spam: the first non-int cursor emits one
+        warning, subsequent reads on the same store stay quiet.  Without
+        this, a poisoned file produces one warning per agent turn."""
+        import logging
+        from loguru import logger as loguru_logger
+
+        store.history_file.write_text(
+            '{"cursor": "bad1", "timestamp": "2026-04-01 10:00", "content": "x"}\n'
+            '{"cursor": 2, "timestamp": "2026-04-01 10:01", "content": "y"}\n',
+            encoding="utf-8",
+        )
+        store._cursor_file.unlink(missing_ok=True)
+
+        handler_id = loguru_logger.add(
+            caplog.handler, format="{message}", level="WARNING"
+        )
+        try:
+            with caplog.at_level(logging.WARNING):
+                store.read_unprocessed_history(since_cursor=0)
+                store.read_unprocessed_history(since_cursor=0)
+                store.append_history("another")
+        finally:
+            loguru_logger.remove(handler_id)
+
+        corruption_warnings = [
+            r for r in caplog.records if "non-int cursor" in r.getMessage()
+        ]
+        assert len(corruption_warnings) == 1, (
+            "Expected exactly one corruption warning per store instance; "
+            f"got {len(corruption_warnings)}: {[r.getMessage() for r in corruption_warnings]}"
+        )

From 1b692debdcee5d591df1e2b3272eb3b6181746fd Mon Sep 17 00:00:00 2001
From: Xubin Ren <xubinrencs@gmail.com>
Date: Tue, 21 Apr 2026 12:46:17 +0000
Subject: [PATCH 12/32] docs(webui): revise README to clarify WebSocket channel
 setup and sequence of startup steps

---
 README.md       | 10 ++++++++--
 webui/README.md | 12 ++++++++++--
 2 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index 9e6aa391b..e592f16e9 100644
--- a/README.md
+++ b/README.md
@@ -194,13 +194,19 @@ nanobot agent
   <img src="images/nanobot_webui.png" alt="nanobot webui preview" width="900">
 </p>
 
-**1. Start the gateway**
+**1. Enable the WebSocket channel in `~/.nanobot/config.json`**
+
+```json
+{ "channels": { "websocket": { "enabled": true } } }
+```
+
+**2. Start the gateway**
 
 ```bash
 nanobot gateway
 ```
 
-**2. Start the webui dev server**
+**3. Start the webui dev server**
 
 ```bash
 cd webui
diff --git a/webui/README.md b/webui/README.md
index 9d3591d22..d318c7452 100644
--- a/webui/README.md
+++ b/webui/README.md
@@ -35,7 +35,15 @@ From the repository root:
 pip install -e .
 ```
 
-### 2. Start the gateway
+### 2. Enable the WebSocket channel
+
+In `~/.nanobot/config.json`:
+
+```json
+{ "channels": { "websocket": { "enabled": true } } }
+```
+
+### 3. Start the gateway
 
 In one terminal:
 
@@ -43,7 +51,7 @@ In one terminal:
 nanobot gateway
 ```
 
-### 3. Start the WebUI dev server
+### 4. Start the WebUI dev server
 
 In another terminal:
 

From 37ea8b8f5b2af8be0350a09dfe7b9be4286d3552 Mon Sep 17 00:00:00 2001
From: chengyongru <chengyongru.ai@gmail.com>
Date: Tue, 21 Apr 2026 17:37:10 +0800
Subject: [PATCH 13/32] fix(retry): recognize ZhiPu 1302 rate-limit error for
 retry
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

ZhiPu API returns code 1302 with Chinese text "速率限制" instead of
standard HTTP 429 + "rate limit", causing the retry engine to treat
it as non-transient and fail immediately.
---
 nanobot/providers/base.py              |  2 ++
 tests/providers/test_provider_retry.py | 50 ++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)

diff --git a/nanobot/providers/base.py b/nanobot/providers/base.py
index 121052efa..d7a59babf 100644
--- a/nanobot/providers/base.py
+++ b/nanobot/providers/base.py
@@ -108,6 +108,7 @@ class LLMProvider(ABC):
         "connection",
         "server error",
         "temporarily unavailable",
+        "速率限制",
     )
     _RETRYABLE_STATUS_CODES = frozenset({408, 409, 429})
     _TRANSIENT_ERROR_KINDS = frozenset({"timeout", "connection"})
@@ -154,6 +155,7 @@ class LLMProvider(ABC):
         "temporarily unavailable",
         "overloaded",
         "concurrency limit",
+        "速率限制",
     )
 
     _SENTINEL = object()
diff --git a/tests/providers/test_provider_retry.py b/tests/providers/test_provider_retry.py
index add5e2245..4b72c163a 100644
--- a/tests/providers/test_provider_retry.py
+++ b/tests/providers/test_provider_retry.py
@@ -546,6 +546,56 @@ async def test_chat_with_retry_normalizes_explicit_none_max_tokens() -> None:
     assert provider.last_kwargs["temperature"] == 0.7
 
 
+@pytest.mark.asyncio
+async def test_chat_with_retry_retries_zhipu_1302_rate_limit(monkeypatch) -> None:
+    """ZhiPu returns code 1302 with Chinese rate-limit text instead of HTTP 429."""
+    provider = ScriptedProvider([
+        LLMResponse(
+            content='Error: {\'code\': \'1302\', \'message\': \'您的账户已达到速率限制，请您控制请求频率\'}',
+            finish_reason="error",
+        ),
+        LLMResponse(content="ok"),
+    ])
+    delays: list[float] = []
+
+    async def _fake_sleep(delay: float) -> None:
+        delays.append(delay)
+
+    monkeypatch.setattr("nanobot.providers.base.asyncio.sleep", _fake_sleep)
+
+    response = await provider.chat_with_retry(messages=[{"role": "user", "content": "hello"}])
+
+    assert response.content == "ok"
+    assert provider.calls == 2
+    assert delays == [1]
+
+
+@pytest.mark.asyncio
+async def test_chat_with_retry_retries_zhipu_1302_with_429_status(monkeypatch) -> None:
+    """ZhiPu 1302 error with HTTP 429 status should also retry."""
+    provider = ScriptedProvider([
+        LLMResponse(
+            content='Error: {\'code\': \'1302\', \'message\': \'您的账户已达到速率限制，请您控制请求频率\'}',
+            finish_reason="error",
+            error_status_code=429,
+            error_code="1302",
+        ),
+        LLMResponse(content="ok"),
+    ])
+    delays: list[float] = []
+
+    async def _fake_sleep(delay: float) -> None:
+        delays.append(delay)
+
+    monkeypatch.setattr("nanobot.providers.base.asyncio.sleep", _fake_sleep)
+
+    response = await provider.chat_with_retry(messages=[{"role": "user", "content": "hello"}])
+
+    assert response.content == "ok"
+    assert provider.calls == 2
+    assert delays == [1]
+
+
 @pytest.mark.asyncio
 async def test_chat_stream_with_retry_normalizes_explicit_none_max_tokens() -> None:
     """chat_stream_with_retry must apply the same None-guard as chat_with_retry."""

From f8a023218d8887abfb299e87e0073d6f1dd7a4f1 Mon Sep 17 00:00:00 2001
From: hussein1362 <hussein.1362@gmail.com>
Date: Tue, 21 Apr 2026 10:44:06 +0300
Subject: [PATCH 14/32] fix(telegram): improve markdown rendering for modern
 LLM output
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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Problem:
Modern LLMs (GPT-5.4, Claude, Gemini) produce markdown-heavy responses with
numbered lists, headers, and nested formatting. The Telegram channel's
_markdown_to_telegram_html() converter has gaps that leave these poorly
formatted:

1. Numbered lists (1. 2. 3.) have zero handling — sent as raw text
2. Headers (# Title) are stripped to plain text, losing visual hierarchy
3. Mid-stream edits send raw markdown (users see **bold** and ### headers
   while the response generates, before the final HTML conversion)

Root Cause:
_markdown_to_telegram_html() handles bullets (- *) but skips numbered lists
entirely. Headers are stripped of # but not given any emphasis. The streaming
path in send_delta() sends buf.text as-is during mid-stream edits (plain
text, no parse_mode) — only the final _stream_end edit converts to HTML.

Fix:
1. Headers now render as <b>bold</b> in the final HTML (using placeholder
   markers that survive HTML escaping, restored after all other processing)
2. Numbered lists are normalized (extra whitespace after the dot is cleaned)
3. New _strip_md_block() function strips markdown syntax for readable
   plain-text preview during streaming mid-edits

The final _stream_end HTML conversion is unchanged — it still produces
full HTML with parse_mode=HTML. Only the intermediate edits are improved.

Tests:
Added 10 new tests covering:
- Headers converting to bold HTML
- Numbered list preservation and whitespace normalization
- Headers with HTML special characters
- Mixed formatting (headers + bullets + numbers + bold)
- _strip_md_block for inline formatting, headers, bullets, numbers, links
- Streaming mid-edit markdown stripping (initial send + edit)
---
 nanobot/channels/telegram.py            |  44 ++++++++-
 tests/channels/test_telegram_channel.py | 120 ++++++++++++++++++++++++
 2 files changed, 160 insertions(+), 4 deletions(-)

diff --git a/nanobot/channels/telegram.py b/nanobot/channels/telegram.py
index ca0639bc1..6925658de 100644
--- a/nanobot/channels/telegram.py
+++ b/nanobot/channels/telegram.py
@@ -53,6 +53,34 @@ def _strip_md(s: str) -> str:
     return s.strip()
 
 
+def _strip_md_block(text: str) -> str:
+    """Strip block-level and inline markdown for readable plain-text preview.
+
+    Used during streaming mid-edits so users see clean text instead of raw
+    markdown syntax while the response is still being generated.
+    """
+    # Code blocks -> just the code
+    text = re.sub(r'```[\w]*\n?([\s\S]*?)```', r'\1', text)
+    # Headers -> plain text
+    text = re.sub(r'^#{1,6}\s+(.+)$', r'\1', text, flags=re.MULTILINE)
+    # Blockquotes
+    text = re.sub(r'^>\s*(.*)$', r'\1', text, flags=re.MULTILINE)
+    # Bold / italic / strikethrough
+    text = re.sub(r'\*\*(.+?)\*\*', r'\1', text)
+    text = re.sub(r'__(.+?)__', r'\1', text)
+    text = re.sub(r'(?<![a-zA-Z0-9])_([^_]+)_(?![a-zA-Z0-9])', r'\1', text)
+    text = re.sub(r'~~(.+?)~~', r'\1', text)
+    # Inline code
+    text = re.sub(r'`([^`]+)`', r'\1', text)
+    # Links [text](url) -> text
+    text = re.sub(r'\[([^\]]+)\]\([^)]+\)', r'\1', text)
+    # Bullet lists
+    text = re.sub(r'^[-*]\s+', '• ', text, flags=re.MULTILINE)
+    # Numbered lists (normalize spacing)
+    text = re.sub(r'^(\d+)\.\s+', r'\1. ', text, flags=re.MULTILINE)
+    return text
+
+
 def _render_table_box(table_lines: list[str]) -> str:
     """Convert markdown pipe-table to compact aligned text for <pre> display."""
 
@@ -129,8 +157,8 @@ def _markdown_to_telegram_html(text: str) -> str:
 
     text = re.sub(r'`([^`]+)`', save_inline_code, text)
 
-    # 3. Headers # Title -> just the title text
-    text = re.sub(r'^#{1,6}\s+(.+)$', r'\1', text, flags=re.MULTILINE)
+    # 3. Headers # Title -> <b>Title</b> (preserve visual hierarchy)
+    text = re.sub(r'^#{1,6}\s+(.+)$', r'⟪B⟫\1⟪/B⟫', text, flags=re.MULTILINE)
 
     # 4. Blockquotes > text -> just the text (before HTML escaping)
     text = re.sub(r'^>\s*(.*)$', r'\1', text, flags=re.MULTILINE)
@@ -154,6 +182,9 @@ def _markdown_to_telegram_html(text: str) -> str:
     # 10. Bullet lists - item -> • item
     text = re.sub(r'^[-*]\s+', '• ', text, flags=re.MULTILINE)
 
+    # 10.5. Numbered lists  1. item -> 1. item (keep number, normalize indent)
+    text = re.sub(r'^(\d+)\.\s+', r'\1. ', text, flags=re.MULTILINE)
+
     # 11. Restore inline code with HTML tags
     for i, code in enumerate(inline_codes):
         # Escape HTML in code content
@@ -166,6 +197,9 @@ def _markdown_to_telegram_html(text: str) -> str:
         escaped = _escape_telegram_html(code)
         text = text.replace(f"\x00CB{i}\x00", f"<pre><code>{escaped}</code></pre>")
 
+    # 13. Restore header bold markers (inserted in step 3, after HTML escaping)
+    text = text.replace('⟪B⟫', '<b>').replace('⟪/B⟫', '</b>')
+
     return text
 
 
@@ -637,10 +671,11 @@ class TelegramChannel(BaseChannel):
         if message_thread_id := meta.get("message_thread_id"):
             thread_kwargs["message_thread_id"] = message_thread_id
         if buf.message_id is None:
+            preview = _strip_md_block(buf.text)
             try:
                 sent = await self._call_with_retry(
                     self._app.bot.send_message,
-                    chat_id=int_chat_id, text=buf.text,
+                    chat_id=int_chat_id, text=preview,
                     **thread_kwargs,
                 )
                 buf.message_id = sent.message_id
@@ -653,11 +688,12 @@ class TelegramChannel(BaseChannel):
                 await self._flush_stream_overflow(int_chat_id, buf, thread_kwargs)
                 buf.last_edit = now
                 return
+            preview = _strip_md_block(buf.text)
             try:
                 await self._call_with_retry(
                     self._app.bot.edit_message_text,
                     chat_id=int_chat_id, message_id=buf.message_id,
-                    text=buf.text,
+                    text=preview,
                 )
                 buf.last_edit = now
             except Exception as e:
diff --git a/tests/channels/test_telegram_channel.py b/tests/channels/test_telegram_channel.py
index e02ca5318..4a69d31a9 100644
--- a/tests/channels/test_telegram_channel.py
+++ b/tests/channels/test_telegram_channel.py
@@ -1471,3 +1471,123 @@ async def test_send_text_bad_request_plain_fallback_exhausted() -> None:
     # so HTML fails after 1 attempt → fallback to plain also fails after 1 attempt.
     # Before the fix: 2 total. After the fix: still 2 (BadRequest SHOULD fallback).
     assert call_count == 2, f"Expected 2 calls (1 HTML + 1 plain), got {call_count}"
+
+
+# ---------------------------------------------------------------------------
+# _markdown_to_telegram_html formatting tests
+# ---------------------------------------------------------------------------
+
+def test_markdown_to_html_headers_become_bold() -> None:
+    from nanobot.channels.telegram import _markdown_to_telegram_html
+
+    assert _markdown_to_telegram_html("# Title") == "<b>Title</b>"
+    assert _markdown_to_telegram_html("## Subtitle") == "<b>Subtitle</b>"
+    assert _markdown_to_telegram_html("### Deep") == "<b>Deep</b>"
+
+
+def test_markdown_to_html_numbered_lists_preserved() -> None:
+    from nanobot.channels.telegram import _markdown_to_telegram_html
+
+    text = "1. First\n2. Second\n3. Third"
+    result = _markdown_to_telegram_html(text)
+    assert "1. First" in result
+    assert "2. Second" in result
+    assert "3. Third" in result
+
+
+def test_markdown_to_html_numbered_list_normalizes_whitespace() -> None:
+    from nanobot.channels.telegram import _markdown_to_telegram_html
+
+    # Extra spaces after dot should be normalized
+    text = "1.   Lots of space\n2.  Two spaces"
+    result = _markdown_to_telegram_html(text)
+    assert "1. Lots of space" in result
+    assert "2. Two spaces" in result
+
+
+def test_markdown_to_html_headers_survive_html_escaping() -> None:
+    """Headers containing special HTML chars should still render as bold."""
+    from nanobot.channels.telegram import _markdown_to_telegram_html
+
+    result = _markdown_to_telegram_html("# A < B & C > D")
+    assert "<b>A &lt; B &amp; C &gt; D</b>" == result
+
+
+def test_markdown_to_html_mixed_formatting() -> None:
+    """Headers, bullets, numbered lists, and bold coexist correctly."""
+    from nanobot.channels.telegram import _markdown_to_telegram_html
+
+    text = "# Overview\n\n- bullet one\n- bullet two\n\n1. step one\n2. step two\n\n**bold text**"
+    result = _markdown_to_telegram_html(text)
+    assert "<b>Overview</b>" in result
+    assert "\u2022 bullet one" in result
+    assert "1. step one" in result
+    assert "<b>bold text</b>" in result
+
+
+# ---------------------------------------------------------------------------
+# _strip_md_block tests
+# ---------------------------------------------------------------------------
+
+def test_strip_md_block_removes_inline_formatting() -> None:
+    from nanobot.channels.telegram import _strip_md_block
+
+    text = "**bold** and _italic_ and ~~struck~~"
+    result = _strip_md_block(text)
+    assert result == "bold and italic and struck"
+
+
+def test_strip_md_block_strips_headers() -> None:
+    from nanobot.channels.telegram import _strip_md_block
+
+    assert _strip_md_block("## Title\nBody") == "Title\nBody"
+
+
+def test_strip_md_block_converts_bullets_and_numbers() -> None:
+    from nanobot.channels.telegram import _strip_md_block
+
+    text = "- item a\n1. item b\n2. item c"
+    result = _strip_md_block(text)
+    assert "\u2022 item a" in result
+    assert "1. item b" in result
+    assert "2. item c" in result
+
+
+def test_strip_md_block_strips_links() -> None:
+    from nanobot.channels.telegram import _strip_md_block
+
+    assert _strip_md_block("[click here](https://example.com)") == "click here"
+
+
+# ---------------------------------------------------------------------------
+# Streaming mid-edit uses _strip_md_block
+# ---------------------------------------------------------------------------
+
+@pytest.mark.asyncio
+async def test_send_delta_mid_stream_strips_markdown() -> None:
+    """Mid-stream edits should strip markdown so users see clean text."""
+    channel = TelegramChannel(
+        TelegramConfig(enabled=True, token="123:abc", allow_from=["*"]),
+        MessageBus(),
+    )
+    channel._app = _FakeApp(lambda: None)
+    channel._app.bot.send_message = AsyncMock(return_value=SimpleNamespace(message_id=42))
+    channel._app.bot.edit_message_text = AsyncMock()
+
+    # Initial send with markdown
+    await channel.send_delta("999", "**hello** world")
+    sent_text = channel._app.bot.send_message.call_args.kwargs.get("text", "")
+    # Should NOT contain raw markdown asterisks
+    assert "**" not in sent_text
+    assert "hello world" in sent_text
+
+    # Mid-stream edit
+    import time
+    buf = channel._stream_bufs["999"]
+    buf.last_edit = time.monotonic() - 10  # force edit interval
+    await channel.send_delta("999", "\n### Title\n1. step")
+    edited_text = channel._app.bot.edit_message_text.call_args.kwargs.get("text", "")
+    assert "###" not in edited_text
+    assert "**" not in edited_text
+    assert "Title" in edited_text
+    assert "1. step" in edited_text

From d4e34f8c6762303db85bfb9eeb76a2648e11b1cc Mon Sep 17 00:00:00 2001
From: chengyongru <2755839590@qq.com>
Date: Tue, 21 Apr 2026 21:28:58 +0800
Subject: [PATCH 15/32] fix(commands): intercept non-priority commands during
 active turn

Non-priority slash commands (e.g. /new, /help, /dream-log) arriving
while a session has an active LLM turn were silently queued into the
pending injection buffer and later injected as raw user messages into
the LLM conversation. This caused the model to respond to "/new" as
plain text instead of executing the command.

Root cause: the run() loop only checked priority commands (/stop,
/restart, /status) before routing messages to the pending queue. All
other command tiers (exact, prefix) bypassed command dispatch entirely.

Changes:
- Add CommandRouter.is_dispatchable_command() to match exact/prefix
  tiers, mirroring the existing is_priority() pattern.
- In run(), intercept dispatchable commands before pending queue
  insertion and dispatch them directly via _dispatch_command_inline().
- Extract _cancel_active_tasks() from cmd_stop for reuse; cmd_new now
  cancels active tasks before clearing the session to prevent shared
  mutable state corruption from concurrent asyncio coroutines.
- Update /new semantics: stops active task first, then clears session.
- Update documentation in help text, docs, and Discord command list.
---
 docs/chat-commands.md                     |   2 +-
 nanobot/agent/loop.py                     |  46 ++++++-
 nanobot/channels/discord.py               |   2 +-
 nanobot/command/builtin.py                |  15 +--
 nanobot/command/router.py                 |  14 +++
 tests/command/test_router_dispatchable.py | 143 ++++++++++++++++++++++
 6 files changed, 205 insertions(+), 17 deletions(-)
 create mode 100644 tests/command/test_router_dispatchable.py

diff --git a/docs/chat-commands.md b/docs/chat-commands.md
index 72707e764..816292e74 100644
--- a/docs/chat-commands.md
+++ b/docs/chat-commands.md
@@ -4,7 +4,7 @@ These commands work inside chat channels and interactive agent sessions:
 
 | Command | Description |
 |---------|-------------|
-| `/new` | Start a new conversation |
+| `/new` | Stop current task and start a new conversation |
 | `/stop` | Stop the current task |
 | `/restart` | Restart the bot |
 | `/status` | Show bot status |
diff --git a/nanobot/agent/loop.py b/nanobot/agent/loop.py
index 116868bb0..25af137c8 100644
--- a/nanobot/agent/loop.py
+++ b/nanobot/agent/loop.py
@@ -345,6 +345,36 @@ class AgentLoop:
 
         return format_tool_hints(tool_calls)
 
+    async def _dispatch_command_inline(
+        self,
+        msg: InboundMessage,
+        key: str,
+        raw: str,
+        dispatch_fn: Callable[[CommandContext], Awaitable[OutboundMessage | None]],
+    ) -> None:
+        """Dispatch a command directly from the run() loop and publish the result."""
+        ctx = CommandContext(msg=msg, session=None, key=key, raw=raw, loop=self)
+        result = await dispatch_fn(ctx)
+        if result:
+            await self.bus.publish_outbound(result)
+        else:
+            logger.warning("Command '{}' matched but dispatch returned None", raw)
+
+    async def _cancel_active_tasks(self, key: str) -> int:
+        """Cancel and await all active tasks and subagents for *key*.
+
+        Returns the total number of cancelled tasks + subagents.
+        """
+        tasks = self._active_tasks.pop(key, [])
+        cancelled = sum(1 for t in tasks if not t.done() and t.cancel())
+        for t in tasks:
+            try:
+                await t
+            except (asyncio.CancelledError, Exception):
+                pass
+        sub_cancelled = await self.subagents.cancel_by_session(key)
+        return cancelled + sub_cancelled
+
     def _effective_session_key(self, msg: InboundMessage) -> str:
         """Return the session key used for task routing and mid-turn injections."""
         if self._unified_session and not msg.session_key_override:
@@ -478,16 +508,24 @@ class AgentLoop:
 
             raw = msg.content.strip()
             if self.commands.is_priority(raw):
-                ctx = CommandContext(msg=msg, session=None, key=msg.session_key, raw=raw, loop=self)
-                result = await self.commands.dispatch_priority(ctx)
-                if result:
-                    await self.bus.publish_outbound(result)
+                await self._dispatch_command_inline(
+                    msg, msg.session_key, raw,
+                    self.commands.dispatch_priority,
+                )
                 continue
             effective_key = self._effective_session_key(msg)
             # If this session already has an active pending queue (i.e. a task
             # is processing this session), route the message there for mid-turn
             # injection instead of creating a competing task.
             if effective_key in self._pending_queues:
+                # Non-priority commands must not be queued for injection;
+                # dispatch them directly (same pattern as priority commands).
+                if self.commands.is_dispatchable_command(raw):
+                    await self._dispatch_command_inline(
+                        msg, effective_key, raw,
+                        self.commands.dispatch,
+                    )
+                    continue
                 pending_msg = msg
                 if effective_key != msg.session_key:
                     pending_msg = dataclasses.replace(
diff --git a/nanobot/channels/discord.py b/nanobot/channels/discord.py
index 9710c5efc..97fa30bd0 100644
--- a/nanobot/channels/discord.py
+++ b/nanobot/channels/discord.py
@@ -135,7 +135,7 @@ if DISCORD_AVAILABLE:
 
         def _register_app_commands(self) -> None:
             commands = (
-                ("new", "Start a new conversation", "/new"),
+                ("new", "Stop current task and start a new conversation", "/new"),
                 ("stop", "Stop the current task", "/stop"),
                 ("restart", "Restart the bot", "/restart"),
                 ("status", "Show bot status", "/status"),
diff --git a/nanobot/command/builtin.py b/nanobot/command/builtin.py
index 94ee0646a..87d4bf640 100644
--- a/nanobot/command/builtin.py
+++ b/nanobot/command/builtin.py
@@ -17,15 +17,7 @@ async def cmd_stop(ctx: CommandContext) -> OutboundMessage:
     """Cancel all active tasks and subagents for the session."""
     loop = ctx.loop
     msg = ctx.msg
-    tasks = loop._active_tasks.pop(msg.session_key, [])
-    cancelled = sum(1 for t in tasks if not t.done() and t.cancel())
-    for t in tasks:
-        try:
-            await t
-        except (asyncio.CancelledError, Exception):
-            pass
-    sub_cancelled = await loop.subagents.cancel_by_session(msg.session_key)
-    total = cancelled + sub_cancelled
+    total = await loop._cancel_active_tasks(msg.session_key)
     content = f"Stopped {total} task(s)." if total else "No active task to stop."
     return OutboundMessage(
         channel=msg.channel, chat_id=msg.chat_id, content=content,
@@ -100,8 +92,9 @@ async def cmd_status(ctx: CommandContext) -> OutboundMessage:
 
 
 async def cmd_new(ctx: CommandContext) -> OutboundMessage:
-    """Start a fresh session."""
+    """Stop active task and start a fresh session."""
     loop = ctx.loop
+    await loop._cancel_active_tasks(ctx.key)
     session = ctx.session or loop.sessions.get_or_create(ctx.key)
     snapshot = session.messages[session.last_consolidated:]
     session.clear()
@@ -327,7 +320,7 @@ def build_help_text() -> str:
     """Build canonical help text shared across channels."""
     lines = [
         "🐈 nanobot commands:",
-        "/new — Start a new conversation",
+        "/new — Stop current task and start a new conversation",
         "/stop — Stop the current task",
         "/restart — Restart the bot",
         "/status — Show bot status",
diff --git a/nanobot/command/router.py b/nanobot/command/router.py
index 35a475453..98f938b17 100644
--- a/nanobot/command/router.py
+++ b/nanobot/command/router.py
@@ -57,6 +57,20 @@ class CommandRouter:
     def is_priority(self, text: str) -> bool:
         return text.strip().lower() in self._priority
 
+    def is_dispatchable_command(self, text: str) -> bool:
+        """Check whether *text* matches any non-priority command tier (exact or prefix).
+
+        Does NOT check priority or interceptor tiers.
+        If this returns True, ``dispatch()`` is guaranteed to match a handler.
+        """
+        cmd = text.strip().lower()
+        if cmd in self._exact:
+            return True
+        for pfx, _ in self._prefix:
+            if cmd.startswith(pfx):
+                return True
+        return False
+
     async def dispatch_priority(self, ctx: CommandContext) -> OutboundMessage | None:
         """Dispatch a priority command. Called from run() without the lock."""
         handler = self._priority.get(ctx.raw.lower())
diff --git a/tests/command/test_router_dispatchable.py b/tests/command/test_router_dispatchable.py
new file mode 100644
index 000000000..3be684072
--- /dev/null
+++ b/tests/command/test_router_dispatchable.py
@@ -0,0 +1,143 @@
+"""Tests for CommandRouter.is_dispatchable_command and mid-turn command interception."""
+
+from __future__ import annotations
+
+from unittest.mock import AsyncMock, MagicMock
+
+import pytest
+
+from nanobot.command.builtin import register_builtin_commands
+from nanobot.command.router import CommandContext, CommandRouter
+
+
+class TestIsDispatchableCommand:
+    """Unit tests for the is_dispatchable_command() predicate."""
+
+    @pytest.fixture()
+    def router(self) -> CommandRouter:
+        r = CommandRouter()
+        register_builtin_commands(r)
+        return r
+
+    def test_exact_commands_match(self, router: CommandRouter) -> None:
+        assert router.is_dispatchable_command("/new")
+        assert router.is_dispatchable_command("/help")
+        assert router.is_dispatchable_command("/dream")
+        assert router.is_dispatchable_command("/dream-log")
+        assert router.is_dispatchable_command("/dream-restore")
+
+    def test_prefix_commands_match(self, router: CommandRouter) -> None:
+        assert router.is_dispatchable_command("/dream-log abc123")
+        assert router.is_dispatchable_command("/dream-restore def456")
+
+    def test_priority_commands_not_matched(self, router: CommandRouter) -> None:
+        # Priority commands are NOT in the dispatchable tiers — they are
+        # handled by is_priority() separately.
+        assert not router.is_dispatchable_command("/stop")
+        assert not router.is_dispatchable_command("/restart")
+
+    def test_regular_text_not_matched(self, router: CommandRouter) -> None:
+        assert not router.is_dispatchable_command("hello")
+        assert not router.is_dispatchable_command("what is 2+2?")
+        assert not router.is_dispatchable_command("")
+
+    def test_case_insensitive(self, router: CommandRouter) -> None:
+        assert router.is_dispatchable_command("/NEW")
+        assert router.is_dispatchable_command("/Help")
+
+    def test_strips_whitespace(self, router: CommandRouter) -> None:
+        assert router.is_dispatchable_command("  /new  ")
+
+    def test_unknown_slash_command_not_matched(self, router: CommandRouter) -> None:
+        assert not router.is_dispatchable_command("/unknown")
+        assert not router.is_dispatchable_command("/foo bar")
+
+
+class TestMidTurnCommandDispatchedDirectly:
+    """Verify that commands matching is_dispatchable_command() are dispatched
+    correctly when session=None (the mid-turn path)."""
+
+    @pytest.fixture()
+    def router(self) -> CommandRouter:
+        r = CommandRouter()
+        register_builtin_commands(r)
+        return r
+
+    @pytest.fixture()
+    def fake_loop(self) -> MagicMock:
+        loop = MagicMock()
+        loop.sessions = MagicMock()
+        loop.sessions.get_or_create = MagicMock(return_value=MagicMock(
+            messages=[], last_consolidated=0, clear=MagicMock(),
+        ))
+        loop.sessions.save = MagicMock()
+        loop.sessions.invalidate = MagicMock()
+        loop._schedule_background = MagicMock()
+        loop._cancel_active_tasks = AsyncMock(return_value=0)
+        return loop
+
+    @pytest.fixture()
+    def fake_msg(self) -> MagicMock:
+        msg = MagicMock()
+        msg.channel = "test"
+        msg.chat_id = "chat1"
+        msg.content = "/new"
+        msg.metadata = {}
+        return msg
+
+    @pytest.mark.asyncio
+    async def test_new_dispatched_with_session_none(
+        self, router: CommandRouter, fake_loop: MagicMock, fake_msg: MagicMock,
+    ) -> None:
+        """cmd_new works when session=None (mid-turn dispatch path)."""
+        ctx = CommandContext(
+            msg=fake_msg, session=None,
+            key="test:chat1", raw="/new", loop=fake_loop,
+        )
+        result = await router.dispatch(ctx)
+        assert result is not None
+        assert "New session" in result.content
+        fake_loop.sessions.get_or_create.assert_called_once_with("test:chat1")
+
+    @pytest.mark.asyncio
+    async def test_help_dispatched_with_session_none(
+        self, router: CommandRouter, fake_loop: MagicMock, fake_msg: MagicMock,
+    ) -> None:
+        ctx = CommandContext(
+            msg=fake_msg, session=None,
+            key="test:chat1", raw="/help", loop=fake_loop,
+        )
+        result = await router.dispatch(ctx)
+        assert result is not None
+
+    @pytest.mark.asyncio
+    async def test_prefix_command_args_populated(self, router: CommandRouter) -> None:
+        """Prefix commands have args populated correctly in mid-turn path."""
+        # Use a custom prefix handler to avoid needing full mock setup.
+        custom = CommandRouter()
+        captured_args = []
+
+        async def fake_handler(ctx: CommandContext) -> None:
+            captured_args.append(ctx.args)
+            return None
+
+        custom.prefix("/test ", fake_handler)
+
+        ctx = CommandContext(
+            msg=MagicMock(channel="test", chat_id="c1", metadata={}),
+            session=None, key="test:c1", raw="/test hello world", loop=MagicMock(),
+        )
+        await custom.dispatch(ctx)
+        assert captured_args == ["hello world"]
+
+    @pytest.mark.asyncio
+    async def test_non_command_returns_none(
+        self, router: CommandRouter, fake_loop: MagicMock, fake_msg: MagicMock,
+    ) -> None:
+        """Regular text returns None from dispatch (not a command)."""
+        ctx = CommandContext(
+            msg=fake_msg, session=None,
+            key="test:chat1", raw="hello world", loop=fake_loop,
+        )
+        result = await router.dispatch(ctx)
+        assert result is None

From e15705b4711da860e994630ffacb9ab164a7eaa1 Mon Sep 17 00:00:00 2001
From: chengyongru <2755839590@qq.com>
Date: Tue, 21 Apr 2026 21:33:55 +0800
Subject: [PATCH 16/32] fix(tests): add _cancel_active_tasks mock to cmd_new
 test fixtures

The existing test_unified_session tests construct a SimpleNamespace
loop mock that now needs _cancel_active_tasks since cmd_new calls it.
---
 tests/agent/test_unified_session.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/agent/test_unified_session.py b/tests/agent/test_unified_session.py
index acf0b9d6d..957c8ead2 100644
--- a/tests/agent/test_unified_session.py
+++ b/tests/agent/test_unified_session.py
@@ -241,6 +241,7 @@ class TestCmdNewUnifiedSession:
         loop = SimpleNamespace(
             sessions=sessions,
             consolidator=SimpleNamespace(archive=AsyncMock(return_value=True)),
+            _cancel_active_tasks=AsyncMock(return_value=0),
         )
         loop._schedule_background = lambda coro: asyncio.ensure_future(coro)
 
@@ -274,6 +275,7 @@ class TestCmdNewUnifiedSession:
         loop = SimpleNamespace(
             sessions=sessions,
             consolidator=SimpleNamespace(archive=AsyncMock(return_value=True)),
+            _cancel_active_tasks=AsyncMock(return_value=0),
         )
         loop._schedule_background = lambda coro: asyncio.ensure_future(coro)
 

From a00beebd0635243fa34c2cab673562541604ceba Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BD=AD=E6=98=9F=E6=9D=B0?= <1198425718@qq.com>
Date: Tue, 21 Apr 2026 14:44:37 +0800
Subject: [PATCH 17/32] fix: use context manager in _extract_xlsx to prevent
 resource leak

---
 nanobot/utils/document.py | 25 ++++++++++++-------------
 1 file changed, 12 insertions(+), 13 deletions(-)

diff --git a/nanobot/utils/document.py b/nanobot/utils/document.py
index 89ffcca96..b73d91b42 100644
--- a/nanobot/utils/document.py
+++ b/nanobot/utils/document.py
@@ -133,19 +133,18 @@ def _extract_docx(path: Path) -> str:
 def _extract_xlsx(path: Path) -> str:
     """Extract text from XLSX using openpyxl."""
     try:
-        wb = load_workbook(path, read_only=True, data_only=True)
-        sheets: list[str] = []
-        for sheet_name in wb.sheetnames:
-            ws = wb[sheet_name]
-            rows: list[str] = []
-            for row in ws.iter_rows(values_only=True):
-                row_text = "\t".join(str(cell) if cell is not None else "" for cell in row)
-                if row_text.strip():
-                    rows.append(row_text)
-            if rows:
-                sheets.append(f"--- Sheet: {sheet_name} ---\n" + "\n".join(rows))
-        wb.close()
-        return _truncate("\n\n".join(sheets), _MAX_TEXT_LENGTH)
+        with load_workbook(path, read_only=True, data_only=True) as wb:
+            sheets: list[str] = []
+            for sheet_name in wb.sheetnames:
+                ws = wb[sheet_name]
+                rows: list[str] = []
+                for row in ws.iter_rows(values_only=True):
+                    row_text = "\t".join(str(cell) if cell is not None else "" for cell in row)
+                    if row_text.strip():
+                        rows.append(row_text)
+                if rows:
+                    sheets.append(f"--- Sheet: {sheet_name} ---\n" + "\n".join(rows))
+            return _truncate("\n\n".join(sheets), _MAX_TEXT_LENGTH)
     except Exception as e:
         logger.error("Failed to extract XLSX {}: {}", path, e)
         return f"[error: failed to extract XLSX: {e!s}]"

From 46864b09114f43b9737554d999fd60e983cc5c6d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BD=AD=E6=98=9F=E6=9D=B0?= <1198425718@qq.com>
Date: Tue, 21 Apr 2026 16:16:27 +0800
Subject: [PATCH 18/32] fix: use try/finally in _extract_xlsx to prevent
 resource leak

---
 nanobot/utils/document.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/nanobot/utils/document.py b/nanobot/utils/document.py
index b73d91b42..396fe50c4 100644
--- a/nanobot/utils/document.py
+++ b/nanobot/utils/document.py
@@ -133,7 +133,8 @@ def _extract_docx(path: Path) -> str:
 def _extract_xlsx(path: Path) -> str:
     """Extract text from XLSX using openpyxl."""
     try:
-        with load_workbook(path, read_only=True, data_only=True) as wb:
+        wb = load_workbook(path, read_only=True, data_only=True)
+        try:
             sheets: list[str] = []
             for sheet_name in wb.sheetnames:
                 ws = wb[sheet_name]
@@ -145,6 +146,8 @@ def _extract_xlsx(path: Path) -> str:
                 if rows:
                     sheets.append(f"--- Sheet: {sheet_name} ---\n" + "\n".join(rows))
             return _truncate("\n\n".join(sheets), _MAX_TEXT_LENGTH)
+        finally:
+            wb.close()
     except Exception as e:
         logger.error("Failed to extract XLSX {}: {}", path, e)
         return f"[error: failed to extract XLSX: {e!s}]"

From 53ba410e4994b5092c9ea1941ac1baf5846d181a Mon Sep 17 00:00:00 2001
From: aiguozhi123456 <126325311+aiguozhi123456@users.noreply.github.com>
Date: Mon, 20 Apr 2026 23:57:47 +0800
Subject: [PATCH 19/32] feat(read_file): add DOCX, XLSX, PPTX support via
 document.extract_text()

Wire up the existing office document extractors in document.py to
ReadFileTool by adding an extension guard and _read_office_doc() method
that follows the established PDF pattern. Handles missing libraries,
corrupt files, empty documents, and 128K truncation consistently.
---
 nanobot/agent/tools/filesystem.py     |  30 ++++++-
 tests/tools/test_read_enhancements.py | 123 +++++++++++++++++++++++++-
 2 files changed, 149 insertions(+), 4 deletions(-)

diff --git a/nanobot/agent/tools/filesystem.py b/nanobot/agent/tools/filesystem.py
index 1f3afd341..c0d628a71 100644
--- a/nanobot/agent/tools/filesystem.py
+++ b/nanobot/agent/tools/filesystem.py
@@ -137,10 +137,11 @@ class ReadFileTool(_FsTool):
     @property
     def description(self) -> str:
         return (
-            "Read a file (text or image). Text output format: LINE_NUM|CONTENT. "
+            "Read a file (text, image, or document). "
+            "Text output format: LINE_NUM|CONTENT. "
             "Images return visual content for analysis. "
-            "Use offset and limit for large files. "
-            "Cannot read non-image binary files. "
+            "Supports PDF, DOCX, XLSX, PPTX documents. "
+            "Use offset and limit for large text files. "
             "Reads exceeding ~128K chars are truncated."
         )
 
@@ -169,6 +170,10 @@ class ReadFileTool(_FsTool):
             if fp.suffix.lower() == ".pdf":
                 return self._read_pdf(fp, pages)
 
+            # Office document support
+            if fp.suffix.lower() in {".docx", ".xlsx", ".pptx"}:
+                return self._read_office_doc(fp)
+
             raw = fp.read_bytes()
             if not raw:
                 return f"(Empty file: {path})"
@@ -304,6 +309,25 @@ class ReadFileTool(_FsTool):
             result = result[:self._MAX_CHARS] + "\n\n(PDF text truncated at ~128K chars)"
         return result
 
+    def _read_office_doc(self, fp: Path) -> str:
+        from nanobot.utils.document import extract_text
+
+        result = extract_text(fp)
+
+        if result is None:
+            return f"Error: Unsupported file format: {fp.suffix}"
+
+        if result.startswith("[error:"):
+            return f"Error reading {fp.suffix.upper()} file: {result}"
+
+        if not result:
+            return f"({fp.suffix.upper().lstrip('.')} has no extractable text: {fp})"
+
+        if len(result) > self._MAX_CHARS:
+            result = result[:self._MAX_CHARS] + "\n\n(Document text truncated at ~128K chars)"
+
+        return result
+
 
 # ---------------------------------------------------------------------------
 # write_file
diff --git a/tests/tools/test_read_enhancements.py b/tests/tools/test_read_enhancements.py
index 0be123700..f7a62f05b 100644
--- a/tests/tools/test_read_enhancements.py
+++ b/tests/tools/test_read_enhancements.py
@@ -1,7 +1,8 @@
-"""Tests for ReadFileTool enhancements: description fix, read dedup, PDF support, device blacklist."""
+"""Tests for ReadFileTool enhancements: description fix, read dedup, PDF support, device blacklist, office docs."""
 
 import os
 import sys
+from unittest.mock import patch
 
 import pytest
 
@@ -246,3 +247,123 @@ class TestReadFileLineEndingNormalization:
         result = await tool.execute(path=str(f))
         assert "\r" not in result
         assert "alpha" in result and "beta" in result and "gamma" in result
+
+
+# ---------------------------------------------------------------------------
+# Office document support (DOCX, XLSX, PPTX)
+# ---------------------------------------------------------------------------
+
+class TestReadOfficeDocuments:
+
+    @pytest.fixture()
+    def tool(self, tmp_path):
+        return ReadFileTool(workspace=tmp_path)
+
+    @pytest.mark.asyncio
+    async def test_docx_returns_extracted_text(self, tool, tmp_path):
+        with patch("nanobot.utils.document.extract_text", return_value="Title\n\nParagraph 1"):
+            f = tmp_path / "test.docx"
+            f.write_bytes(b"PK")
+            result = await tool.execute(path=str(f))
+        assert "Title" in result
+        assert "Paragraph 1" in result
+        assert "Error" not in result
+
+    @pytest.mark.asyncio
+    async def test_xlsx_returns_extracted_text(self, tool, tmp_path):
+        with patch("nanobot.utils.document.extract_text", return_value="--- Sheet: Sheet1 ---\nName\tAge\nAlice\t30"):
+            f = tmp_path / "test.xlsx"
+            f.write_bytes(b"PK")
+            result = await tool.execute(path=str(f))
+        assert "Sheet1" in result
+        assert "Alice" in result
+
+    @pytest.mark.asyncio
+    async def test_pptx_returns_extracted_text(self, tool, tmp_path):
+        with patch("nanobot.utils.document.extract_text", return_value="--- Slide 1 ---\nWelcome\n--- Slide 2 ---\nContent"):
+            f = tmp_path / "test.pptx"
+            f.write_bytes(b"PK")
+            result = await tool.execute(path=str(f))
+        assert "Welcome" in result
+        assert "Content" in result
+
+    @pytest.mark.asyncio
+    async def test_docx_missing_library(self, tool, tmp_path):
+        with patch("nanobot.utils.document.extract_text", return_value="[error: python-docx not installed]"):
+            f = tmp_path / "test.docx"
+            f.write_bytes(b"PK")
+            result = await tool.execute(path=str(f))
+        assert "Error" in result
+        assert "python-docx not installed" in result
+
+    @pytest.mark.asyncio
+    async def test_docx_corrupt_file(self, tool, tmp_path):
+        with patch("nanobot.utils.document.extract_text", return_value="[error: failed to extract DOCX: bad zip]"):
+            f = tmp_path / "test.docx"
+            f.write_bytes(b"not-a-zip")
+            result = await tool.execute(path=str(f))
+        assert "Error" in result
+        assert "failed to extract DOCX" in result
+
+    @pytest.mark.asyncio
+    async def test_unsupported_extension(self, tool, tmp_path):
+        with patch("nanobot.utils.document.extract_text", return_value=None):
+            f = tmp_path / "test.docx"
+            f.write_bytes(b"PK")
+            result = await tool.execute(path=str(f))
+        assert "Error" in result
+        assert "Unsupported" in result
+
+    @pytest.mark.asyncio
+    async def test_empty_document_returns_descriptive_message(self, tool, tmp_path):
+        with patch("nanobot.utils.document.extract_text", return_value=""):
+            f = tmp_path / "empty.docx"
+            f.write_bytes(b"PK")
+            result = await tool.execute(path=str(f))
+        assert "no extractable text" in result
+
+
+class TestOfficeDocTruncation:
+
+    @pytest.fixture()
+    def tool(self, tmp_path):
+        return ReadFileTool(workspace=tmp_path)
+
+    @pytest.mark.asyncio
+    async def test_large_document_truncated(self, tool, tmp_path):
+        with patch("nanobot.utils.document.extract_text", return_value="x" * 200_000):
+            f = tmp_path / "large.docx"
+            f.write_bytes(b"PK")
+            result = await tool.execute(path=str(f))
+        assert len(result) <= ReadFileTool._MAX_CHARS + 100
+        assert "truncated at ~128K chars" in result
+
+    @pytest.mark.asyncio
+    async def test_small_document_not_truncated(self, tool, tmp_path):
+        with patch("nanobot.utils.document.extract_text", return_value="Hello world"):
+            f = tmp_path / "small.docx"
+            f.write_bytes(b"PK")
+            result = await tool.execute(path=str(f))
+        assert "truncated" not in result
+        assert "Hello world" in result
+
+    @pytest.mark.asyncio
+    async def test_error_response_not_truncated(self, tool, tmp_path):
+        with patch("nanobot.utils.document.extract_text", return_value="[error: failed to extract DOCX: something went wrong]"):
+            f = tmp_path / "bad.docx"
+            f.write_bytes(b"PK")
+            result = await tool.execute(path=str(f))
+        assert "Error" in result
+        assert "truncated" not in result
+
+
+class TestReadDescriptionUpdate:
+
+    def test_description_mentions_documents(self):
+        tool = ReadFileTool()
+        desc = tool.description.lower()
+        assert "document" in desc or "docx" in desc or "xlsx" in desc or "pptx" in desc
+
+    def test_description_no_longer_says_cannot_read(self):
+        tool = ReadFileTool()
+        assert "cannot read" not in tool.description.lower()

From 558aa984911fa395e49a7bad63d81a71de898312 Mon Sep 17 00:00:00 2001
From: Xubin Ren <xubinrencs@gmail.com>
Date: Tue, 21 Apr 2026 14:33:44 +0000
Subject: [PATCH 20/32] chore: temporary keep WebUI source-only

---
 nanobot/cli/commands.py                  | 62 ------------------------
 pyproject.toml                           |  7 ---
 webui/README.md                          |  6 +--
 webui/src/i18n/locales/en/common.json    |  2 +-
 webui/src/i18n/locales/es/common.json    |  2 +-
 webui/src/i18n/locales/fr/common.json    |  2 +-
 webui/src/i18n/locales/id/common.json    |  2 +-
 webui/src/i18n/locales/ja/common.json    |  2 +-
 webui/src/i18n/locales/ko/common.json    |  2 +-
 webui/src/i18n/locales/vi/common.json    |  2 +-
 webui/src/i18n/locales/zh-CN/common.json |  2 +-
 webui/src/i18n/locales/zh-TW/common.json |  2 +-
 12 files changed, 12 insertions(+), 81 deletions(-)

diff --git a/nanobot/cli/commands.py b/nanobot/cli/commands.py
index ec572ffe9..7892df0ee 100644
--- a/nanobot/cli/commands.py
+++ b/nanobot/cli/commands.py
@@ -950,68 +950,6 @@ def _run_gateway(
     asyncio.run(run())
 
 
-@app.command()
-def web(
-    port: int | None = typer.Option(None, "--port", "-p", help="WebSocket port for the webui"),
-    workspace: str | None = typer.Option(None, "--workspace", "-w", help="Workspace directory"),
-    verbose: bool = typer.Option(False, "--verbose", "-v", help="Verbose output"),
-    config: str | None = typer.Option(None, "--config", "-c", help="Path to config file"),
-    open_browser: bool = typer.Option(True, "--open/--no-open", help="Open the browser when ready"),
-):
-    """Start the gateway with the embedded webui and (by default) open a browser."""
-    if verbose:
-        import logging
-
-        logging.basicConfig(level=logging.DEBUG)
-
-    cfg = _load_runtime_config(config, workspace)
-
-    # Force the websocket channel on with token-gated auth so the webui is functional.
-    # ``--port`` applies to the webui's websocket/HTTP port, not the gateway's
-    # management port, since that's the only surface users visit.
-    ws_section = cfg.channels.websocket
-    if isinstance(ws_section, dict):
-        ws_section.setdefault("host", "127.0.0.1")
-        ws_section["enabled"] = True
-        ws_section["websocketRequiresToken"] = True
-        if port is not None:
-            ws_section["port"] = port
-        ws_host = ws_section.get("host", "127.0.0.1")
-        ws_port = ws_section.get("port", 8765)
-        ws_path = ws_section.get("path", "/")
-    else:
-        ws_section.enabled = True
-        if hasattr(ws_section, "websocket_requires_token"):
-            ws_section.websocket_requires_token = True
-        if port is not None:
-            ws_section.port = port
-        ws_host = getattr(ws_section, "host", "127.0.0.1") or "127.0.0.1"
-        ws_port = getattr(ws_section, "port", 8765)
-        ws_path = getattr(ws_section, "path", "/") or "/"
-
-    # Confirm the bundled SPA exists before promising the user a browser launch.
-    from nanobot.channels.manager import _default_webui_dist
-
-    dist = _default_webui_dist()
-    if dist is None:
-        console.print(
-            "[yellow]Warning: webui assets not found at nanobot/web/dist/. "
-            "Run `cd webui && bun install && bun run build` from a source checkout.[/yellow]"
-        )
-
-    scheme = "http"
-    # Browsers refuse cookies/JS on 0.0.0.0 — collapse to loopback for the visit URL.
-    visit_host = "127.0.0.1" if ws_host in {"0.0.0.0", "::"} else ws_host
-    open_url = f"{scheme}://{visit_host}:{ws_port}{ws_path if ws_path != '/' else ''}/"
-
-    # The gateway's management port is separate from the webui port; leave it
-    # on its configured default so --port only moves the visible surface.
-    _run_gateway(
-        cfg,
-        open_browser_url=open_url if open_browser else None,
-    )
-
-
 # ============================================================================
 # Agent Commands
 # ============================================================================
diff --git a/pyproject.toml b/pyproject.toml
index 3447ffc30..e7282abf3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -118,13 +118,6 @@ include = [
     "nanobot/skills/**/*.md",
     "nanobot/skills/**/*.sh",
 ]
-# Build-time generated assets that live under .gitignore'd paths but must ship
-# in the wheel/sdist. `artifacts` bypasses the VCS filter (unlike `include`).
-# The webui is compiled via `bun run build` into nanobot/web/dist/ right before
-# `python -m build` runs.
-artifacts = [
-    "nanobot/web/dist/**/*",
-]
 
 [tool.hatch.build.targets.wheel]
 packages = ["nanobot"]
diff --git a/webui/README.md b/webui/README.md
index d318c7452..602b179e7 100644
--- a/webui/README.md
+++ b/webui/README.md
@@ -1,6 +1,6 @@
 # nanobot webui
 
-The browser front-end for `nanobot web`. It is built with Vite + React 18 +
+The browser front-end for the nanobot gateway. It is built with Vite + React 18 +
 TypeScript + Tailwind 3 + shadcn/ui, talks to the gateway over the WebSocket
 multiplex protocol, and reads session metadata from the embedded REST surface
 on the same port.
@@ -22,7 +22,7 @@ For the project overview, install guide, and general docs map, see the root
 
 ```text
 webui/                 source tree (this directory)
-nanobot/web/dist/      build output consumed by `nanobot web`
+nanobot/web/dist/      build output served by the gateway
 ```
 
 ## Develop from source
@@ -80,7 +80,7 @@ bun run build
 ```
 
 This writes the production assets to `../nanobot/web/dist`, which is the
-directory served by `nanobot web` and bundled into the Python wheel.
+directory served by `nanobot gateway` and bundled into the Python wheel.
 
 If you are cutting a release, run the build before packaging so the published
 wheel contains the current WebUI assets.
diff --git a/webui/src/i18n/locales/en/common.json b/webui/src/i18n/locales/en/common.json
index 9fc016637..0b0f34061 100644
--- a/webui/src/i18n/locales/en/common.json
+++ b/webui/src/i18n/locales/en/common.json
@@ -7,7 +7,7 @@
     },
     "error": {
       "title": "Couldn't reach nanobot",
-      "gatewayHint": "Make sure the gateway is running (`nanobot web`) and that this page is open on the same machine."
+      "gatewayHint": "Make sure the gateway is running (`nanobot gateway`) and that this page is open on the same machine."
     },
     "documentTitle": {
       "base": "nanobot",
diff --git a/webui/src/i18n/locales/es/common.json b/webui/src/i18n/locales/es/common.json
index 1c0993647..2f11a2fb9 100644
--- a/webui/src/i18n/locales/es/common.json
+++ b/webui/src/i18n/locales/es/common.json
@@ -7,7 +7,7 @@
     },
     "error": {
       "title": "No se pudo conectar con nanobot",
-      "gatewayHint": "Asegúrate de que la gateway esté en ejecución (`nanobot web`) y de que esta página esté abierta en la misma máquina."
+      "gatewayHint": "Asegúrate de que la gateway esté en ejecución (`nanobot gateway`) y de que esta página esté abierta en la misma máquina."
     },
     "documentTitle": {
       "base": "nanobot",
diff --git a/webui/src/i18n/locales/fr/common.json b/webui/src/i18n/locales/fr/common.json
index 75e4753d5..33d59c725 100644
--- a/webui/src/i18n/locales/fr/common.json
+++ b/webui/src/i18n/locales/fr/common.json
@@ -7,7 +7,7 @@
     },
     "error": {
       "title": "Impossible de joindre nanobot",
-      "gatewayHint": "Assurez-vous que la gateway est en cours d’exécution (`nanobot web`) et que cette page est ouverte sur la même machine."
+      "gatewayHint": "Assurez-vous que la gateway est en cours d’exécution (`nanobot gateway`) et que cette page est ouverte sur la même machine."
     },
     "documentTitle": {
       "base": "nanobot",
diff --git a/webui/src/i18n/locales/id/common.json b/webui/src/i18n/locales/id/common.json
index 6085046ef..f37132bdf 100644
--- a/webui/src/i18n/locales/id/common.json
+++ b/webui/src/i18n/locales/id/common.json
@@ -7,7 +7,7 @@
     },
     "error": {
       "title": "Tidak dapat menjangkau nanobot",
-      "gatewayHint": "Pastikan gateway sedang berjalan (`nanobot web`) dan halaman ini dibuka pada mesin yang sama."
+      "gatewayHint": "Pastikan gateway sedang berjalan (`nanobot gateway`) dan halaman ini dibuka pada mesin yang sama."
     },
     "documentTitle": {
       "base": "nanobot",
diff --git a/webui/src/i18n/locales/ja/common.json b/webui/src/i18n/locales/ja/common.json
index 5f76ac0c9..8529e9a8a 100644
--- a/webui/src/i18n/locales/ja/common.json
+++ b/webui/src/i18n/locales/ja/common.json
@@ -7,7 +7,7 @@
     },
     "error": {
       "title": "nanobot に接続できませんでした",
-      "gatewayHint": "gateway（`nanobot web`）が起動しており、このページが同じマシン上で開かれていることを確認してください。"
+      "gatewayHint": "gateway（`nanobot gateway`）が起動しており、このページが同じマシン上で開かれていることを確認してください。"
     },
     "documentTitle": {
       "base": "nanobot",
diff --git a/webui/src/i18n/locales/ko/common.json b/webui/src/i18n/locales/ko/common.json
index bc840764a..a1e52aca9 100644
--- a/webui/src/i18n/locales/ko/common.json
+++ b/webui/src/i18n/locales/ko/common.json
@@ -7,7 +7,7 @@
     },
     "error": {
       "title": "nanobot에 연결할 수 없습니다",
-      "gatewayHint": "gateway(`nanobot web`)가 실행 중인지, 그리고 이 페이지가 같은 머신에서 열려 있는지 확인하세요."
+      "gatewayHint": "gateway(`nanobot gateway`)가 실행 중인지, 그리고 이 페이지가 같은 머신에서 열려 있는지 확인하세요."
     },
     "documentTitle": {
       "base": "nanobot",
diff --git a/webui/src/i18n/locales/vi/common.json b/webui/src/i18n/locales/vi/common.json
index d648f60e9..33099878d 100644
--- a/webui/src/i18n/locales/vi/common.json
+++ b/webui/src/i18n/locales/vi/common.json
@@ -7,7 +7,7 @@
     },
     "error": {
       "title": "Không thể kết nối tới nanobot",
-      "gatewayHint": "Hãy chắc chắn gateway đang chạy (`nanobot web`) và trang này được mở trên cùng máy."
+      "gatewayHint": "Hãy chắc chắn gateway đang chạy (`nanobot gateway`) và trang này được mở trên cùng máy."
     },
     "documentTitle": {
       "base": "nanobot",
diff --git a/webui/src/i18n/locales/zh-CN/common.json b/webui/src/i18n/locales/zh-CN/common.json
index 67a12f3ff..ae7815e9d 100644
--- a/webui/src/i18n/locales/zh-CN/common.json
+++ b/webui/src/i18n/locales/zh-CN/common.json
@@ -7,7 +7,7 @@
     },
     "error": {
       "title": "无法连接到 nanobot",
-      "gatewayHint": "请确认 gateway 已启动（`nanobot web`），并且当前页面与 gateway 运行在同一台机器上。"
+      "gatewayHint": "请确认 gateway 已启动（`nanobot gateway`），并且当前页面与 gateway 运行在同一台机器上。"
     },
     "documentTitle": {
       "base": "nanobot",
diff --git a/webui/src/i18n/locales/zh-TW/common.json b/webui/src/i18n/locales/zh-TW/common.json
index 743ca5876..f606a7f18 100644
--- a/webui/src/i18n/locales/zh-TW/common.json
+++ b/webui/src/i18n/locales/zh-TW/common.json
@@ -7,7 +7,7 @@
     },
     "error": {
       "title": "無法連線到 nanobot",
-      "gatewayHint": "請確認 gateway 已啟動（`nanobot web`），並且目前頁面與 gateway 在同一台機器上開啟。"
+      "gatewayHint": "請確認 gateway 已啟動（`nanobot gateway`），並且目前頁面與 gateway 在同一台機器上開啟。"
     },
     "documentTitle": {
       "base": "nanobot",

From e5b288c6ebe227a68e458aded6898a4707138699 Mon Sep 17 00:00:00 2001
From: k <lahuman@daum.net>
Date: Tue, 21 Apr 2026 23:09:36 +0900
Subject: [PATCH 21/32] fix: map MiniMax reasoning_effort to reasoning_split

---
 nanobot/providers/openai_compat_provider.py |  2 ++
 tests/providers/test_litellm_kwargs.py      | 15 +++++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/nanobot/providers/openai_compat_provider.py b/nanobot/providers/openai_compat_provider.py
index 2ffc7c588..e5cac8765 100644
--- a/nanobot/providers/openai_compat_provider.py
+++ b/nanobot/providers/openai_compat_provider.py
@@ -398,6 +398,8 @@ class OpenAICompatProvider(LLMProvider):
             extra: dict[str, Any] | None = None
             if spec.name == "dashscope":
                 extra = {"enable_thinking": thinking_enabled}
+            elif spec.name == "minimax":
+                extra = {"reasoning_split": thinking_enabled}
             elif spec.name in (
                 "volcengine", "volcengine_coding_plan",
                 "byteplus", "byteplus_coding_plan",
diff --git a/tests/providers/test_litellm_kwargs.py b/tests/providers/test_litellm_kwargs.py
index 0d6280b7d..a12aa9fbb 100644
--- a/tests/providers/test_litellm_kwargs.py
+++ b/tests/providers/test_litellm_kwargs.py
@@ -740,6 +740,21 @@ def test_dashscope_no_extra_body_when_reasoning_effort_none() -> None:
     assert "extra_body" not in kw
 
 
+def test_minimax_reasoning_split_enabled_with_reasoning_effort() -> None:
+    kw = _build_kwargs_for("minimax", "MiniMax-M2.7", reasoning_effort="medium")
+    assert kw["extra_body"] == {"reasoning_split": True}
+
+
+def test_minimax_reasoning_split_disabled_for_minimal() -> None:
+    kw = _build_kwargs_for("minimax", "MiniMax-M2.7", reasoning_effort="minimal")
+    assert kw["extra_body"] == {"reasoning_split": False}
+
+
+def test_minimax_no_extra_body_when_reasoning_effort_none() -> None:
+    kw = _build_kwargs_for("minimax", "MiniMax-M2.7", reasoning_effort=None)
+    assert "extra_body" not in kw
+
+
 def test_volcengine_thinking_enabled() -> None:
     kw = _build_kwargs_for("volcengine", "doubao-seed-2-0-pro", reasoning_effort="high")
     assert kw["extra_body"] == {"thinking": {"type": "enabled"}}

From 950dddec499fbbe0353e997158c99808f0bb41e1 Mon Sep 17 00:00:00 2001
From: Xubin Ren <xubinrencs@gmail.com>
Date: Tue, 21 Apr 2026 17:25:08 +0000
Subject: [PATCH 22/32] chore: bump version to 0.1.5.post2

---
 README.md           | 14 ++++++++++----
 nanobot/__init__.py |  2 +-
 pyproject.toml      |  2 +-
 3 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index e592f16e9..5d10ae6b5 100644
--- a/README.md
+++ b/README.md
@@ -23,20 +23,26 @@
 
 ## 📢 News
 
+- **2026-04-20** 🎨 Kimi K2.6 support, Telegram long-message split, WebUI typography & dark-mode polish.
+- **2026-04-19** 🌐 WebUI i18n locale switcher, atomic session writes with auto-repair.
+- **2026-04-18** 🧪 Initial WebUI chat, smarter setup wizard menus, WebSocket multi-chat multiplexing.
+- **2026-04-17** 🪟 Windows & Python 3.14 CI, Dream line-age memory, email self-loop guard.
+- **2026-04-16** 📡 SSE streaming for OpenAI-compatible API, Discord channel allow-list.
+- **2026-04-15** 🎛️ LM Studio & nullable API keys, MiniMax thinking endpoint, runtime SelfTool.
 - **2026-04-14** 🚀 Released **v0.1.5.post1** — Dream skill discovery, mid-turn follow-up injection, WebSocket channel, and deeper channel integrations. Please see [release notes](https://github.com/HKUDS/nanobot/releases/tag/v0.1.5.post1) for details.
 - **2026-04-13** 🛡️ Agent turn hardened — user messages persisted early, auto-compact skips active tasks.
 - **2026-04-12** 🔒 Lark global domain support, Dream learns discovered skills, shell sandbox tightened.
 - **2026-04-11** ⚡ Context compact shrinks sessions on the fly; Kagi web search; QQ & WeCom full media.
+
+<details>
+<summary>Earlier news</summary>
+
 - **2026-04-10** 📓 Notebook editing tool, multiple MCP servers, Feishu streaming & done-emoji.
 - **2026-04-09** 🔌 WebSocket channel, unified cross-channel session, `disabled_skills` config.
 - **2026-04-08** 📤 API file uploads, OpenAI reasoning auto-routing with Responses fallback.
 - **2026-04-07** 🧠 Anthropic adaptive thinking, MCP resources & prompts exposed as tools.
 - **2026-04-06** 🛰️ Langfuse observability, unified Whisper transcription, email attachments.
 - **2026-04-05** 🚀 Released **v0.1.5** — sturdier long-running tasks, Dream two-stage memory, production-ready sandboxing and programming Agent SDK. Please see [release notes](https://github.com/HKUDS/nanobot/releases/tag/v0.1.5) for details.
-
-<details>
-<summary>Earlier news</summary>
-
 - **2026-04-04** 🚀 Jinja2 response templates, Dream memory hardened, smarter retry handling.
 - **2026-04-03** 🧠 Xiaomi MiMo provider, chain-of-thought reasoning visible, Telegram UX polish.
 - **2026-04-02** 🧱 Long-running tasks run more reliably — core runtime hardening.
diff --git a/nanobot/__init__.py b/nanobot/__init__.py
index 5e6954d96..e2428d2d7 100644
--- a/nanobot/__init__.py
+++ b/nanobot/__init__.py
@@ -21,7 +21,7 @@ def _resolve_version() -> str:
         return _pkg_version("nanobot-ai")
     except PackageNotFoundError:
         # Source checkouts often import nanobot without installed dist-info.
-        return _read_pyproject_version() or "0.1.5.post1"
+        return _read_pyproject_version() or "0.1.5.post2"
 
 
 __version__ = _resolve_version()
diff --git a/pyproject.toml b/pyproject.toml
index e7282abf3..1e4ca97df 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "nanobot-ai"
-version = "0.1.5.post1"
+version = "0.1.5.post2"
 description = "A lightweight personal AI assistant framework"
 readme = { file = "README.md", content-type = "text/markdown" }
 requires-python = ">=3.11"

From f5b8ee9f784609336915bb3c6ad559af534f6b25 Mon Sep 17 00:00:00 2001
From: Xubin Ren <xubinrencs@gmail.com>
Date: Tue, 21 Apr 2026 17:50:54 +0000
Subject: [PATCH 23/32] docs: update v0.1.5.post2 release news

---
 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index 5d10ae6b5..90a3d2f4c 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,7 @@
 
 ## 📢 News
 
+- **2026-04-21** 🚀 Released **v0.1.5.post2** — Windows & Python 3.14 support, Office document reading, SSE streaming for the OpenAI-compatible API, and stronger reliability across sessions, memory, and channels. Please see [release notes](https://github.com/HKUDS/nanobot/releases/tag/v0.1.5.post2) for details.
 - **2026-04-20** 🎨 Kimi K2.6 support, Telegram long-message split, WebUI typography & dark-mode polish.
 - **2026-04-19** 🌐 WebUI i18n locale switcher, atomic session writes with auto-repair.
 - **2026-04-18** 🧪 Initial WebUI chat, smarter setup wizard menus, WebSocket multi-chat multiplexing.

From 1826ab44fa22c52c9c1117846c673115a0672144 Mon Sep 17 00:00:00 2001
From: flobo3 <floptopbot33@gmail.com>
Date: Sun, 19 Apr 2026 20:35:03 +0300
Subject: [PATCH 24/32] feat(transcription): add language parameter for Groq
 Whisper STT

---
 nanobot/channels/base.py           | 2 ++
 nanobot/channels/manager.py        | 1 +
 nanobot/config/schema.py           | 1 +
 nanobot/providers/transcription.py | 5 ++++-
 4 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/nanobot/channels/base.py b/nanobot/channels/base.py
index a59b31e20..778ed4d4c 100644
--- a/nanobot/channels/base.py
+++ b/nanobot/channels/base.py
@@ -25,6 +25,7 @@ class BaseChannel(ABC):
     transcription_provider: str = "groq"
     transcription_api_key: str = ""
     transcription_api_base: str = ""
+    transcription_language: str = ""
 
     def __init__(self, config: Any, bus: MessageBus):
         """
@@ -54,6 +55,7 @@ class BaseChannel(ABC):
                 provider = GroqTranscriptionProvider(
                     api_key=self.transcription_api_key,
                     api_base=self.transcription_api_base or None,
+                    language=self.transcription_language or None,
                 )
             return await provider.transcribe(file_path)
         except Exception as e:
diff --git a/nanobot/channels/manager.py b/nanobot/channels/manager.py
index f8f2c1d81..0f0b7430d 100644
--- a/nanobot/channels/manager.py
+++ b/nanobot/channels/manager.py
@@ -88,6 +88,7 @@ class ChannelManager:
                 channel.transcription_provider = transcription_provider
                 channel.transcription_api_key = transcription_key
                 channel.transcription_api_base = transcription_base
+                channel.transcription_language = getattr(self.config.channels, "transcription_language", "")
                 self.channels[name] = channel
                 logger.info("{} channel enabled", cls.display_name)
             except Exception as e:
diff --git a/nanobot/config/schema.py b/nanobot/config/schema.py
index ac48619f1..a6978ba3e 100644
--- a/nanobot/config/schema.py
+++ b/nanobot/config/schema.py
@@ -29,6 +29,7 @@ class ChannelsConfig(Base):
     send_tool_hints: bool = False  # stream tool-call hints (e.g. read_file("…"))
     send_max_retries: int = Field(default=3, ge=0, le=10)  # Max delivery attempts (initial send included)
     transcription_provider: str = "groq"  # Voice transcription backend: "groq" or "openai"
+    transcription_language: str = ""  # Language code for Whisper STT (e.g. "en", "ru", "zh")
 
 
 class DreamConfig(Base):
diff --git a/nanobot/providers/transcription.py b/nanobot/providers/transcription.py
index 617fd3eb1..daeedfbef 100644
--- a/nanobot/providers/transcription.py
+++ b/nanobot/providers/transcription.py
@@ -48,9 +48,10 @@ class GroqTranscriptionProvider:
     Groq offers extremely fast transcription with a generous free tier.
     """
 
-    def __init__(self, api_key: str | None = None, api_base: str | None = None):
+    def __init__(self, api_key: str | None = None, api_base: str | None = None, language: str | None = None):
         self.api_key = api_key or os.environ.get("GROQ_API_KEY")
         self.api_url = api_base or os.environ.get("GROQ_BASE_URL") or "https://api.groq.com/openai/v1/audio/transcriptions"
+        self.language = language
 
     async def transcribe(self, file_path: str | Path) -> str:
         """
@@ -78,6 +79,8 @@ class GroqTranscriptionProvider:
                         "file": (path.name, f),
                         "model": (None, "whisper-large-v3"),
                     }
+                    if self.language:
+                        files["language"] = (None, self.language)
                     headers = {
                         "Authorization": f"Bearer {self.api_key}",
                     }

From 123d69bfb76c3691320f22fcbd7be23d2e638a9a Mon Sep 17 00:00:00 2001
From: k <lahuman@daum.net>
Date: Wed, 22 Apr 2026 07:56:35 +0900
Subject: [PATCH 25/32] fix: allow specifying transcription language

---
 docs/configuration.md                  |  4 +-
 nanobot/channels/base.py               |  3 +-
 nanobot/channels/manager.py            |  3 +-
 nanobot/config/schema.py               |  2 +-
 nanobot/providers/transcription.py     | 17 ++++-
 tests/channels/test_channel_plugins.py | 87 ++++++++++++++++++++++++--
 6 files changed, 104 insertions(+), 12 deletions(-)

diff --git a/docs/configuration.md b/docs/configuration.md
index a7b3ec0f5..153cbc959 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -45,7 +45,7 @@ IMAP_PASSWORD=your-password-here
 ## Providers
 
 > [!TIP]
-> - **Voice transcription**: Voice messages (Telegram, WhatsApp) are automatically transcribed using Whisper. By default Groq is used (free tier). Set `"transcriptionProvider": "openai"` under `channels` to use OpenAI Whisper instead — the API key is picked from the matching provider config.
+> - **Voice transcription**: Voice messages (Telegram, WhatsApp) are automatically transcribed using Whisper. By default Groq is used (free tier). Set `"transcriptionProvider": "openai"` under `channels` to use OpenAI Whisper instead, and optionally set `"transcriptionLanguage": "en"` (or another ISO-639-1 code) for more accurate transcription. The API key is picked from the matching provider config.
 > - **MiniMax Coding Plan**: Exclusive discount links for the nanobot community: [Overseas](https://platform.minimax.io/subscribe/coding-plan?code=9txpdXw04g&source=link) · [Mainland China](https://platform.minimaxi.com/subscribe/token-plan?code=GILTJpMTqZ&source=link)
 > - **MiniMax (Mainland China)**: If your API key is from MiniMax's mainland China platform (minimaxi.com), set `"apiBase": "https://api.minimaxi.com/v1"` in your minimax provider config.
 > - **MiniMax thinking mode**: Use `providers.minimaxAnthropic` when you want `reasoningEffort` / thinking mode. MiniMax exposes that capability through its Anthropic-compatible endpoint, so nanobot keeps it as a separate provider instead of guessing MiniMax-specific thinking parameters on the generic OpenAI-compatible `minimax` endpoint. It uses the same `MINIMAX_API_KEY`. Default Anthropic-compatible base URL: `https://api.minimax.io/anthropic`; for mainland China use `https://api.minimaxi.com/anthropic`.
@@ -440,6 +440,7 @@ Global settings that apply to all channels. Configure under the `channels` secti
     "sendToolHints": false,
     "sendMaxRetries": 3,
     "transcriptionProvider": "groq",
+    "transcriptionLanguage": null,
     "telegram": { ... }
   }
 }
@@ -451,6 +452,7 @@ Global settings that apply to all channels. Configure under the `channels` secti
 | `sendToolHints` | `false` | Stream tool-call hints (e.g. `read_file("…")`) |
 | `sendMaxRetries` | `3` | Max delivery attempts per outbound message, including the initial send (0-10 configured, minimum 1 actual attempt) |
 | `transcriptionProvider` | `"groq"` | Voice transcription backend: `"groq"` (free tier, default) or `"openai"`. API key is auto-resolved from the matching provider config. |
+| `transcriptionLanguage` | `null` | Optional ISO-639-1 language hint for audio transcription, e.g. `"en"`, `"ko"`, `"ja"`. |
 
 ### Retry Behavior
 
diff --git a/nanobot/channels/base.py b/nanobot/channels/base.py
index 778ed4d4c..62bcd45c1 100644
--- a/nanobot/channels/base.py
+++ b/nanobot/channels/base.py
@@ -25,7 +25,7 @@ class BaseChannel(ABC):
     transcription_provider: str = "groq"
     transcription_api_key: str = ""
     transcription_api_base: str = ""
-    transcription_language: str = ""
+    transcription_language: str | None = None
 
     def __init__(self, config: Any, bus: MessageBus):
         """
@@ -49,6 +49,7 @@ class BaseChannel(ABC):
                 provider = OpenAITranscriptionProvider(
                     api_key=self.transcription_api_key,
                     api_base=self.transcription_api_base or None,
+                    language=self.transcription_language or None,
                 )
             else:
                 from nanobot.providers.transcription import GroqTranscriptionProvider
diff --git a/nanobot/channels/manager.py b/nanobot/channels/manager.py
index 0f0b7430d..7110311b5 100644
--- a/nanobot/channels/manager.py
+++ b/nanobot/channels/manager.py
@@ -63,6 +63,7 @@ class ChannelManager:
         transcription_provider = self.config.channels.transcription_provider
         transcription_key = self._resolve_transcription_key(transcription_provider)
         transcription_base = self._resolve_transcription_base(transcription_provider)
+        transcription_language = self.config.channels.transcription_language
 
         for name, cls in discover_all().items():
             section = getattr(self.config.channels, name, None)
@@ -88,7 +89,7 @@ class ChannelManager:
                 channel.transcription_provider = transcription_provider
                 channel.transcription_api_key = transcription_key
                 channel.transcription_api_base = transcription_base
-                channel.transcription_language = getattr(self.config.channels, "transcription_language", "")
+                channel.transcription_language = transcription_language
                 self.channels[name] = channel
                 logger.info("{} channel enabled", cls.display_name)
             except Exception as e:
diff --git a/nanobot/config/schema.py b/nanobot/config/schema.py
index a6978ba3e..0c2b1b2ac 100644
--- a/nanobot/config/schema.py
+++ b/nanobot/config/schema.py
@@ -29,7 +29,7 @@ class ChannelsConfig(Base):
     send_tool_hints: bool = False  # stream tool-call hints (e.g. read_file("…"))
     send_max_retries: int = Field(default=3, ge=0, le=10)  # Max delivery attempts (initial send included)
     transcription_provider: str = "groq"  # Voice transcription backend: "groq" or "openai"
-    transcription_language: str = ""  # Language code for Whisper STT (e.g. "en", "ru", "zh")
+    transcription_language: str | None = None  # Optional ISO-639-1 hint for audio transcription
 
 
 class DreamConfig(Base):
diff --git a/nanobot/providers/transcription.py b/nanobot/providers/transcription.py
index daeedfbef..969990166 100644
--- a/nanobot/providers/transcription.py
+++ b/nanobot/providers/transcription.py
@@ -10,13 +10,19 @@ from loguru import logger
 class OpenAITranscriptionProvider:
     """Voice transcription provider using OpenAI's Whisper API."""
 
-    def __init__(self, api_key: str | None = None, api_base: str | None = None):
+    def __init__(
+        self,
+        api_key: str | None = None,
+        api_base: str | None = None,
+        language: str | None = None,
+    ):
         self.api_key = api_key or os.environ.get("OPENAI_API_KEY")
         self.api_url = (
             api_base
             or os.environ.get("OPENAI_TRANSCRIPTION_BASE_URL")
             or "https://api.openai.com/v1/audio/transcriptions"
         )
+        self.language = language
 
     async def transcribe(self, file_path: str | Path) -> str:
         if not self.api_key:
@@ -30,6 +36,8 @@ class OpenAITranscriptionProvider:
             async with httpx.AsyncClient() as client:
                 with open(path, "rb") as f:
                     files = {"file": (path.name, f), "model": (None, "whisper-1")}
+                    if self.language:
+                        files["language"] = (None, self.language)
                     headers = {"Authorization": f"Bearer {self.api_key}"}
                     response = await client.post(
                         self.api_url, headers=headers, files=files, timeout=60.0,
@@ -48,7 +56,12 @@ class GroqTranscriptionProvider:
     Groq offers extremely fast transcription with a generous free tier.
     """
 
-    def __init__(self, api_key: str | None = None, api_base: str | None = None, language: str | None = None):
+    def __init__(
+        self,
+        api_key: str | None = None,
+        api_base: str | None = None,
+        language: str | None = None,
+    ):
         self.api_key = api_key or os.environ.get("GROQ_API_KEY")
         self.api_url = api_base or os.environ.get("GROQ_BASE_URL") or "https://api.groq.com/openai/v1/audio/transcriptions"
         self.language = language
diff --git a/tests/channels/test_channel_plugins.py b/tests/channels/test_channel_plugins.py
index a6959f937..6abe21f7a 100644
--- a/tests/channels/test_channel_plugins.py
+++ b/tests/channels/test_channel_plugins.py
@@ -15,7 +15,6 @@ from nanobot.channels.manager import ChannelManager
 from nanobot.config.schema import ChannelsConfig
 from nanobot.utils.restart import RestartNotice
 
-
 # ---------------------------------------------------------------------------
 # Helpers
 # ---------------------------------------------------------------------------
@@ -200,8 +199,8 @@ async def test_manager_propagates_groq_transcription_api_base_to_channels():
     fake_config = SimpleNamespace(
         channels=ChannelsConfig.model_validate({
             "fakeplugin": {"enabled": True, "allowFrom": ["*"]},
+            "transcriptionLanguage": "en",
         }),
-        transcription_provider="groq",
         providers=SimpleNamespace(
             groq=SimpleNamespace(api_key="groq-key", api_base="http://proxy.local/v1/audio/transcriptions"),
             openai=SimpleNamespace(api_key="openai-key", api_base="https://api.openai.com/v1/audio/transcriptions"),
@@ -223,6 +222,7 @@ async def test_manager_propagates_groq_transcription_api_base_to_channels():
     assert channel.transcription_provider == "groq"
     assert channel.transcription_api_key == "groq-key"
     assert channel.transcription_api_base == "http://proxy.local/v1/audio/transcriptions"
+    assert channel.transcription_language == "en"
 
 
 @pytest.mark.asyncio
@@ -269,13 +269,15 @@ async def test_base_channel_passes_api_base_to_openai_transcription_provider():
     channel.transcription_provider = "openai"
     channel.transcription_api_key = "k"
     channel.transcription_api_base = "http://override/v1/audio/transcriptions"
+    channel.transcription_language = "en"
 
     captured: dict[str, object] = {}
 
     class _StubOpenAI:
-        def __init__(self, api_key=None, api_base=None):
+        def __init__(self, api_key=None, api_base=None, language=None):
             captured["api_key"] = api_key
             captured["api_base"] = api_base
+            captured["language"] = language
 
         async def transcribe(self, file_path):
             return "ok"
@@ -286,6 +288,7 @@ async def test_base_channel_passes_api_base_to_openai_transcription_provider():
     assert result == "ok"
     assert captured["api_key"] == "k"
     assert captured["api_base"] == "http://override/v1/audio/transcriptions"
+    assert captured["language"] == "en"
 
 
 def test_openai_transcription_provider_honors_api_base_argument():
@@ -300,10 +303,80 @@ def test_openai_transcription_provider_honors_api_base_argument():
     assert custom.api_url == "http://override/v1/audio/transcriptions"
 
 
+@pytest.mark.asyncio
+async def test_base_channel_passes_language_to_groq_transcription_provider():
+    """BaseChannel.transcribe_audio must forward transcription_language to Groq."""
+    from nanobot.providers import transcription as transcription_mod
+
+    channel = _FakePlugin({"enabled": True, "allowFrom": ["*"]}, MessageBus())
+    channel.transcription_provider = "groq"
+    channel.transcription_api_key = "k"
+    channel.transcription_api_base = "http://override/v1/audio/transcriptions"
+    channel.transcription_language = "ko"
+
+    captured: dict[str, object] = {}
+
+    class _StubGroq:
+        def __init__(self, api_key=None, api_base=None, language=None):
+            captured["api_key"] = api_key
+            captured["api_base"] = api_base
+            captured["language"] = language
+
+        async def transcribe(self, file_path):
+            return "ok"
+
+    with patch.object(transcription_mod, "GroqTranscriptionProvider", _StubGroq):
+        result = await channel.transcribe_audio("/tmp/does-not-matter.wav")
+
+    assert result == "ok"
+    assert captured["api_key"] == "k"
+    assert captured["api_base"] == "http://override/v1/audio/transcriptions"
+    assert captured["language"] == "ko"
+
+
+@pytest.mark.asyncio
+async def test_groq_transcription_provider_includes_language(tmp_path):
+    from nanobot.providers.transcription import GroqTranscriptionProvider
+
+    audio = tmp_path / "sample.wav"
+    audio.write_bytes(b"audio")
+    captured: dict[str, object] = {}
+
+    class _Response:
+        def raise_for_status(self):
+            return None
+
+        def json(self):
+            return {"text": "hello"}
+
+    class _AsyncClient:
+        async def __aenter__(self):
+            return self
+
+        async def __aexit__(self, exc_type, exc, tb):
+            return False
+
+        async def post(self, url, headers=None, files=None, timeout=None):
+            captured["url"] = url
+            captured["headers"] = headers
+            captured["files"] = files
+            captured["timeout"] = timeout
+            return _Response()
+
+    provider = GroqTranscriptionProvider(api_key="k", language="ko")
+
+    with patch("nanobot.providers.transcription.httpx.AsyncClient", return_value=_AsyncClient()):
+        result = await provider.transcribe(audio)
+
+    assert result == "hello"
+    assert captured["files"]["language"] == (None, "ko")
+
+
 def test_channels_login_uses_discovered_plugin_class(monkeypatch):
+    from typer.testing import CliRunner
+
     from nanobot.cli.commands import app
     from nanobot.config.schema import Config
-    from typer.testing import CliRunner
 
     runner = CliRunner()
     seen: dict[str, object] = {}
@@ -329,9 +402,10 @@ def test_channels_login_uses_discovered_plugin_class(monkeypatch):
 
 
 def test_channels_login_sets_custom_config_path(monkeypatch, tmp_path):
+    from typer.testing import CliRunner
+
     from nanobot.cli.commands import app
     from nanobot.config.schema import Config
-    from typer.testing import CliRunner
 
     runner = CliRunner()
     seen: dict[str, object] = {}
@@ -358,9 +432,10 @@ def test_channels_login_sets_custom_config_path(monkeypatch, tmp_path):
 
 
 def test_channels_status_sets_custom_config_path(monkeypatch, tmp_path):
+    from typer.testing import CliRunner
+
     from nanobot.cli.commands import app
     from nanobot.config.schema import Config
-    from typer.testing import CliRunner
 
     runner = CliRunner()
     seen: dict[str, object] = {}

From f6a417e77d9b2a3f5958fb756f1e3b2a36f3d371 Mon Sep 17 00:00:00 2001
From: chengyongru <chengyongru.ai@gmail.com>
Date: Wed, 22 Apr 2026 10:47:49 +0800
Subject: [PATCH 26/32] fix(transcription): harden language parameter
 validation and tests

- Add ISO-639 pattern validation (2-3 lowercase letters) to schema
- Normalize empty language to None in provider constructors
- Extract shared httpx mock stubs, parameterize provider tests
- Add test for language=None omitting field from multipart body
- Add test for Pydantic pattern validation rejecting invalid codes
---
 nanobot/config/schema.py               |  2 +-
 nanobot/providers/transcription.py     |  4 +-
 tests/channels/test_channel_plugins.py | 88 ++++++++++++++++++++------
 3 files changed, 73 insertions(+), 21 deletions(-)

diff --git a/nanobot/config/schema.py b/nanobot/config/schema.py
index 0c2b1b2ac..cca8f210f 100644
--- a/nanobot/config/schema.py
+++ b/nanobot/config/schema.py
@@ -29,7 +29,7 @@ class ChannelsConfig(Base):
     send_tool_hints: bool = False  # stream tool-call hints (e.g. read_file("…"))
     send_max_retries: int = Field(default=3, ge=0, le=10)  # Max delivery attempts (initial send included)
     transcription_provider: str = "groq"  # Voice transcription backend: "groq" or "openai"
-    transcription_language: str | None = None  # Optional ISO-639-1 hint for audio transcription
+    transcription_language: str | None = Field(default=None, pattern=r"^[a-z]{2,3}$")  # Optional ISO-639-1 hint for audio transcription
 
 
 class DreamConfig(Base):
diff --git a/nanobot/providers/transcription.py b/nanobot/providers/transcription.py
index 969990166..10fcafd6d 100644
--- a/nanobot/providers/transcription.py
+++ b/nanobot/providers/transcription.py
@@ -22,7 +22,7 @@ class OpenAITranscriptionProvider:
             or os.environ.get("OPENAI_TRANSCRIPTION_BASE_URL")
             or "https://api.openai.com/v1/audio/transcriptions"
         )
-        self.language = language
+        self.language = language or None
 
     async def transcribe(self, file_path: str | Path) -> str:
         if not self.api_key:
@@ -64,7 +64,7 @@ class GroqTranscriptionProvider:
     ):
         self.api_key = api_key or os.environ.get("GROQ_API_KEY")
         self.api_url = api_base or os.environ.get("GROQ_BASE_URL") or "https://api.groq.com/openai/v1/audio/transcriptions"
-        self.language = language
+        self.language = language or None
 
     async def transcribe(self, file_path: str | Path) -> str:
         """
diff --git a/tests/channels/test_channel_plugins.py b/tests/channels/test_channel_plugins.py
index 6abe21f7a..10f045bf8 100644
--- a/tests/channels/test_channel_plugins.py
+++ b/tests/channels/test_channel_plugins.py
@@ -334,21 +334,24 @@ async def test_base_channel_passes_language_to_groq_transcription_provider():
     assert captured["language"] == "ko"
 
 
-@pytest.mark.asyncio
-async def test_groq_transcription_provider_includes_language(tmp_path):
-    from nanobot.providers.transcription import GroqTranscriptionProvider
+# ---------------------------------------------------------------------------
+# Transcription provider HTTP tests
+# ---------------------------------------------------------------------------
 
-    audio = tmp_path / "sample.wav"
-    audio.write_bytes(b"audio")
-    captured: dict[str, object] = {}
+from nanobot.providers.transcription import GroqTranscriptionProvider as _GroqProvider
+from nanobot.providers.transcription import OpenAITranscriptionProvider as _OpenAIProvider
 
-    class _Response:
-        def raise_for_status(self):
-            return None
 
-        def json(self):
-            return {"text": "hello"}
+class _StubResponse:
+    def raise_for_status(self):
+        return None
 
+    def json(self):
+        return {"text": "hello"}
+
+
+def _stub_async_client(captured: dict[str, object]):
+    """Return an httpx.AsyncClient stub that records POST calls into *captured*."""
     class _AsyncClient:
         async def __aenter__(self):
             return self
@@ -357,19 +360,50 @@ async def test_groq_transcription_provider_includes_language(tmp_path):
             return False
 
         async def post(self, url, headers=None, files=None, timeout=None):
-            captured["url"] = url
-            captured["headers"] = headers
             captured["files"] = files
-            captured["timeout"] = timeout
-            return _Response()
+            return _StubResponse()
 
-    provider = GroqTranscriptionProvider(api_key="k", language="ko")
+    return _AsyncClient()
 
-    with patch("nanobot.providers.transcription.httpx.AsyncClient", return_value=_AsyncClient()):
+
+@pytest.mark.parametrize(
+    "provider_cls,language",
+    [(_GroqProvider, "ko"), (_OpenAIProvider, "en")],
+    ids=["groq", "openai"],
+)
+@pytest.mark.asyncio
+async def test_transcription_provider_includes_language(tmp_path, provider_cls, language):
+    """Provider must include the 'language' field in multipart body when set."""
+    audio = tmp_path / "sample.wav"
+    audio.write_bytes(b"audio")
+    captured: dict[str, object] = {}
+
+    with patch("nanobot.providers.transcription.httpx.AsyncClient", return_value=_stub_async_client(captured)):
+        provider = provider_cls(api_key="k", language=language)
         result = await provider.transcribe(audio)
 
     assert result == "hello"
-    assert captured["files"]["language"] == (None, "ko")
+    assert captured["files"]["language"] == (None, language)
+
+
+@pytest.mark.parametrize(
+    "provider_cls",
+    [_GroqProvider, _OpenAIProvider],
+    ids=["groq", "openai"],
+)
+@pytest.mark.asyncio
+async def test_transcription_provider_omits_language_when_none(tmp_path, provider_cls):
+    """When language is not set, the 'language' key must be absent from the multipart body."""
+    audio = tmp_path / "sample.wav"
+    audio.write_bytes(b"audio")
+    captured: dict[str, object] = {}
+
+    with patch("nanobot.providers.transcription.httpx.AsyncClient", return_value=_stub_async_client(captured)):
+        provider = provider_cls(api_key="k")
+        result = await provider.transcribe(audio)
+
+    assert result == "hello"
+    assert "language" not in captured["files"]
 
 
 def test_channels_login_uses_discovered_plugin_class(monkeypatch):
@@ -530,6 +564,24 @@ def test_channels_config_send_max_retries_upper_bound():
         ChannelsConfig(send_max_retries=11)
 
 
+def test_channels_config_transcription_language_pattern():
+    """transcription_language must match ISO-639 format (2-3 lowercase letters) or be None."""
+    from pydantic import ValidationError
+
+    # Valid values
+    assert ChannelsConfig(transcription_language="en").transcription_language == "en"
+    assert ChannelsConfig(transcription_language="kor").transcription_language == "kor"
+    assert ChannelsConfig(transcription_language=None).transcription_language is None
+
+    # Invalid values
+    with pytest.raises(ValidationError):
+        ChannelsConfig(transcription_language="EN")       # uppercase
+    with pytest.raises(ValidationError):
+        ChannelsConfig(transcription_language="english")   # full word
+    with pytest.raises(ValidationError):
+        ChannelsConfig(transcription_language="en-US")     # BCP 47 tag
+
+
 # ---------------------------------------------------------------------------
 # _send_with_retry
 # ---------------------------------------------------------------------------

From 28c42628b058c81e7c377ed8aceedf83f471d747 Mon Sep 17 00:00:00 2001
From: hlg <huanglg@hotmail.com>
Date: Wed, 22 Apr 2026 10:24:37 +0800
Subject: [PATCH 27/32] fix: normalize DashScope reasoning_effort (minimal vs
 minimum)

DashScope rejects the OpenAI-style value "minimal" with
`'reasoning_effort.effort' must be one of: 'none', 'minimum', 'low',
'medium', 'high', 'xhigh'`, but nanobot was passing the string through
verbatim. Users who tried the documented "minimal" to disable thinking
got a 400; users who tried the DashScope-native "minimum" to work
around it got `enable_thinking=True` because the internal comparison
was a hard string match on "minimal".

Introduce a semantic/wire split in `_build_kwargs`:

- `semantic_effort` is the internal canonical form (OpenAI vocabulary).
  "minimum" on the way in is normalized to "minimal" here so both
  spellings share one meaning.
- `wire_effort` is what we actually serialize. For DashScope with
  semantic_effort == "minimal" we translate to "minimum" on the way
  out; other providers are unchanged.
- `thinking_enabled` and the Kimi thinking branch now compare on
  `semantic_effort`, so either user spelling correctly disables
  provider-side thinking.

Tests:

- Strengthen `test_dashscope_thinking_disabled_for_minimal` to assert
  the wire value is "minimum" in addition to the extra_body signal;
  the original version only checked extra_body and let the
  invalid-value bug slip through.
- Add `test_dashscope_thinking_disabled_for_minimum_alias` so a user
  who read the DashScope docs and configured "minimum" still gets
  thinking off.
- Add `test_non_dashscope_minimal_not_retranslated` to pin down that
  the DashScope-specific translation does not leak to OpenAI et al.
---
 nanobot/providers/openai_compat_provider.py | 31 ++++++++++++++++++---
 tests/providers/test_litellm_kwargs.py      | 22 +++++++++++++++
 2 files changed, 49 insertions(+), 4 deletions(-)

diff --git a/nanobot/providers/openai_compat_provider.py b/nanobot/providers/openai_compat_provider.py
index e5cac8765..457bf4a2c 100644
--- a/nanobot/providers/openai_compat_provider.py
+++ b/nanobot/providers/openai_compat_provider.py
@@ -387,14 +387,37 @@ class OpenAICompatProvider(LLMProvider):
                     kwargs.update(overrides)
                     break
 
-        if reasoning_effort:
-            kwargs["reasoning_effort"] = reasoning_effort
+        # Semantic vs. wire distinction for reasoning_effort.
+        # - semantic_effort is nanobot's internal canonical form (OpenAI's
+        #   vocabulary: "minimal" / "low" / "medium" / "high"). It drives
+        #   decisions like whether to disable provider thinking modes.
+        # - wire_effort is what we actually serialize to the provider; some
+        #   providers (notably DashScope) reject "minimal" and require
+        #   "minimum" instead. We accept either spelling on input and
+        #   always compare on the semantic form so a user who configured
+        #   "minimum" (DashScope's native spelling) still gets thinking
+        #   disabled instead of accidentally enabled.
+        semantic_effort: str | None = None
+        if isinstance(reasoning_effort, str):
+            semantic_effort = reasoning_effort.lower()
+            if semantic_effort == "minimum":
+                semantic_effort = "minimal"
+
+        wire_effort = reasoning_effort
+        if spec and spec.name == "dashscope" and semantic_effort == "minimal":
+            # DashScope's reasoning_effort.effort enum accepts: none /
+            # minimum / low / medium / high / xhigh. Literal "minimal"
+            # returns 400 invalid_value; translate on the outbound side.
+            wire_effort = "minimum"
+
+        if wire_effort:
+            kwargs["reasoning_effort"] = wire_effort
 
         # Provider-specific thinking parameters.
         # Only sent when reasoning_effort is explicitly configured so that
         # the provider default is preserved otherwise.
         if spec and reasoning_effort is not None:
-            thinking_enabled = reasoning_effort.lower() != "minimal"
+            thinking_enabled = semantic_effort != "minimal"
             extra: dict[str, Any] | None = None
             if spec.name == "dashscope":
                 extra = {"enable_thinking": thinking_enabled}
@@ -415,7 +438,7 @@ class OpenAICompatProvider(LLMProvider):
         # so that OpenRouter-style names like "moonshotai/kimi-k2.5" are handled
         # identically to bare names like "kimi-k2.5".
         if reasoning_effort is not None and _is_kimi_thinking_model(model_name):
-            thinking_enabled = reasoning_effort.lower() != "minimal"
+            thinking_enabled = semantic_effort != "minimal"
             kwargs.setdefault("extra_body", {}).update(
                 {"thinking": {"type": "enabled" if thinking_enabled else "disabled"}}
             )
diff --git a/tests/providers/test_litellm_kwargs.py b/tests/providers/test_litellm_kwargs.py
index a12aa9fbb..5067f094f 100644
--- a/tests/providers/test_litellm_kwargs.py
+++ b/tests/providers/test_litellm_kwargs.py
@@ -731,10 +731,32 @@ def test_dashscope_thinking_enabled_with_reasoning_effort() -> None:
 
 
 def test_dashscope_thinking_disabled_for_minimal() -> None:
+    """OpenAI-style 'minimal' → DashScope wire value 'minimum' + thinking off.
+    DashScope rejects the literal string 'minimal' (invalid_value), so we
+    must translate on the outbound side while still honouring the 'no
+    thinking' intent via extra_body."""
     kw = _build_kwargs_for("dashscope", "qwen3-plus", reasoning_effort="minimal")
+    assert kw["reasoning_effort"] == "minimum"
     assert kw["extra_body"] == {"enable_thinking": False}
 
 
+def test_dashscope_thinking_disabled_for_minimum_alias() -> None:
+    """Users who read DashScope docs may configure the native 'minimum'
+    spelling. Internally it's the same semantic as 'minimal' → thinking
+    must still be disabled (not enabled just because the string isn't
+    literally 'minimal')."""
+    kw = _build_kwargs_for("dashscope", "qwen3-plus", reasoning_effort="minimum")
+    assert kw["reasoning_effort"] == "minimum"
+    assert kw["extra_body"] == {"enable_thinking": False}
+
+
+def test_non_dashscope_minimal_not_retranslated() -> None:
+    """The DashScope-specific translation must not leak to other providers;
+    OpenAI / Anthropic / etc. speak 'minimal' natively."""
+    kw = _build_kwargs_for("openai", "gpt-5", reasoning_effort="minimal")
+    assert kw["reasoning_effort"] == "minimal"
+
+
 def test_dashscope_no_extra_body_when_reasoning_effort_none() -> None:
     kw = _build_kwargs_for("dashscope", "qwen-turbo", reasoning_effort=None)
     assert "extra_body" not in kw

From 88c619901ee72c830094c72ddeef768af6313f05 Mon Sep 17 00:00:00 2001
From: Xubin Ren <xubinrencs@gmail.com>
Date: Wed, 22 Apr 2026 04:47:40 +0000
Subject: [PATCH 28/32] review(providers): tighten comments in reasoning_effort
 normalize path

Made-with: Cursor
---
 nanobot/providers/openai_compat_provider.py | 17 ++++-------------
 tests/providers/test_litellm_kwargs.py      | 13 +++----------
 2 files changed, 7 insertions(+), 23 deletions(-)

diff --git a/nanobot/providers/openai_compat_provider.py b/nanobot/providers/openai_compat_provider.py
index 457bf4a2c..4f726df21 100644
--- a/nanobot/providers/openai_compat_provider.py
+++ b/nanobot/providers/openai_compat_provider.py
@@ -387,16 +387,9 @@ class OpenAICompatProvider(LLMProvider):
                     kwargs.update(overrides)
                     break
 
-        # Semantic vs. wire distinction for reasoning_effort.
-        # - semantic_effort is nanobot's internal canonical form (OpenAI's
-        #   vocabulary: "minimal" / "low" / "medium" / "high"). It drives
-        #   decisions like whether to disable provider thinking modes.
-        # - wire_effort is what we actually serialize to the provider; some
-        #   providers (notably DashScope) reject "minimal" and require
-        #   "minimum" instead. We accept either spelling on input and
-        #   always compare on the semantic form so a user who configured
-        #   "minimum" (DashScope's native spelling) still gets thinking
-        #   disabled instead of accidentally enabled.
+        # Normalize reasoning_effort into a semantic form (OpenAI vocab)
+        # used for internal decisions, and a wire form actually sent out.
+        # "minimum" is accepted as a DashScope-native alias for "minimal".
         semantic_effort: str | None = None
         if isinstance(reasoning_effort, str):
             semantic_effort = reasoning_effort.lower()
@@ -405,9 +398,7 @@ class OpenAICompatProvider(LLMProvider):
 
         wire_effort = reasoning_effort
         if spec and spec.name == "dashscope" and semantic_effort == "minimal":
-            # DashScope's reasoning_effort.effort enum accepts: none /
-            # minimum / low / medium / high / xhigh. Literal "minimal"
-            # returns 400 invalid_value; translate on the outbound side.
+            # DashScope accepts none/minimum/low/medium/high/xhigh; "minimal" 400s.
             wire_effort = "minimum"
 
         if wire_effort:
diff --git a/tests/providers/test_litellm_kwargs.py b/tests/providers/test_litellm_kwargs.py
index 5067f094f..41188c721 100644
--- a/tests/providers/test_litellm_kwargs.py
+++ b/tests/providers/test_litellm_kwargs.py
@@ -731,28 +731,21 @@ def test_dashscope_thinking_enabled_with_reasoning_effort() -> None:
 
 
 def test_dashscope_thinking_disabled_for_minimal() -> None:
-    """OpenAI-style 'minimal' → DashScope wire value 'minimum' + thinking off.
-    DashScope rejects the literal string 'minimal' (invalid_value), so we
-    must translate on the outbound side while still honouring the 'no
-    thinking' intent via extra_body."""
+    """'minimal' → wire 'minimum' + thinking off on DashScope."""
     kw = _build_kwargs_for("dashscope", "qwen3-plus", reasoning_effort="minimal")
     assert kw["reasoning_effort"] == "minimum"
     assert kw["extra_body"] == {"enable_thinking": False}
 
 
 def test_dashscope_thinking_disabled_for_minimum_alias() -> None:
-    """Users who read DashScope docs may configure the native 'minimum'
-    spelling. Internally it's the same semantic as 'minimal' → thinking
-    must still be disabled (not enabled just because the string isn't
-    literally 'minimal')."""
+    """Native 'minimum' spelling must also disable thinking, not enable it."""
     kw = _build_kwargs_for("dashscope", "qwen3-plus", reasoning_effort="minimum")
     assert kw["reasoning_effort"] == "minimum"
     assert kw["extra_body"] == {"enable_thinking": False}
 
 
 def test_non_dashscope_minimal_not_retranslated() -> None:
-    """The DashScope-specific translation must not leak to other providers;
-    OpenAI / Anthropic / etc. speak 'minimal' natively."""
+    """DashScope-specific translation must not leak to other providers."""
     kw = _build_kwargs_for("openai", "gpt-5", reasoning_effort="minimal")
     assert kw["reasoning_effort"] == "minimal"
 

From 2e419f9ba27e11a601a8cf80f9a47506f31f97f5 Mon Sep 17 00:00:00 2001
From: wood3n <knightconnorp@gmail.com>
Date: Tue, 21 Apr 2026 13:34:18 -0700
Subject: [PATCH 29/32] fix(cli): respect sys.stdout.isatty() in commands.py

---
 nanobot/cli/commands.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nanobot/cli/commands.py b/nanobot/cli/commands.py
index 7892df0ee..cfa681b75 100644
--- a/nanobot/cli/commands.py
+++ b/nanobot/cli/commands.py
@@ -145,7 +145,7 @@ def _make_console() -> Console:
 def _render_interactive_ansi(render_fn) -> str:
     """Render Rich output to ANSI so prompt_toolkit can print it safely."""
     ansi_console = Console(
-        force_terminal=True,
+        force_terminal=sys.stdout.isatty(),
         color_system=console.color_system or "standard",
         width=console.width,
     )

From ef8bbab7b388e49399c093605d3019fe0a956890 Mon Sep 17 00:00:00 2001
From: Xubin Ren <xubinrencs@gmail.com>
Date: Wed, 22 Apr 2026 04:54:07 +0000
Subject: [PATCH 30/32] test(cli): lock _render_interactive_ansi force_terminal
 to isatty

Made-with: Cursor
---
 tests/cli/test_cli_input.py | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/tests/cli/test_cli_input.py b/tests/cli/test_cli_input.py
index 0e1235b86..e648e818c 100644
--- a/tests/cli/test_cli_input.py
+++ b/tests/cli/test_cli_input.py
@@ -183,3 +183,22 @@ def test_make_console_force_terminal_false_when_stdout_is_not_tty():
     with patch.object(sys.stdout, "isatty", return_value=False):
         console = stream_mod._make_console()
         assert console._force_terminal is False
+
+
+def test_render_interactive_ansi_force_terminal_follows_isatty():
+    """Mirror of _make_console: the capture console used to produce ANSI for
+    prompt_toolkit must also defer to sys.stdout.isatty(), otherwise cursor
+    escapes and spinner frames leak into piped output (#3265, #3370)."""
+    import sys
+    captured: dict = {}
+
+    def render_fn(c):
+        captured["console"] = c
+
+    with patch.object(sys.stdout, "isatty", return_value=True):
+        commands._render_interactive_ansi(render_fn)
+        assert captured["console"]._force_terminal is True
+
+    with patch.object(sys.stdout, "isatty", return_value=False):
+        commands._render_interactive_ansi(render_fn)
+        assert captured["console"]._force_terminal is False

From 512bf59b3c4bc0da199a1f25d7973e8740c0b2ac Mon Sep 17 00:00:00 2001
From: hussein1362 <hussein.1362@gmail.com>
Date: Tue, 21 Apr 2026 23:22:43 +0300
Subject: [PATCH 31/32] fix(session): fsync sessions on graceful shutdown to
 prevent data loss
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

On filesystems with write-back caching (rclone VFS, NFS, FUSE mounts)
the OS page cache may buffer recent session writes. If the process is
killed before the cache flushes, the most recent conversation turns are
silently lost — causing the agent to "forget" recent context and
respond to stale history on the next startup.

Changes:

- session/manager.py: add fsync=True option to save() that flushes the
  file and its parent directory to durable storage. Add flush_all() that
  re-saves every cached session with fsync. Default save() behavior is
  unchanged (no fsync) to avoid performance regression in normal
  operation.

- cli/commands.py: call agent.sessions.flush_all() in the gateway
  shutdown finally block, after stopping heartbeat/cron/channels.

- tests/session/test_session_fsync.py: 8 tests covering fsync flag
  behavior, flush_all with empty/multiple/errored sessions, and
  data survival across simulated process restart.

- tests/cli/test_commands.py: add sessions attribute to _FakeAgentLoop
  so the gateway health endpoint test passes with the new shutdown
  flush.
---
 nanobot/cli/commands.py             |   6 ++
 nanobot/session/manager.py          |  39 ++++++++-
 tests/cli/test_commands.py          |   5 ++
 tests/session/__init__.py           |   0
 tests/session/test_session_fsync.py | 125 ++++++++++++++++++++++++++++
 5 files changed, 173 insertions(+), 2 deletions(-)
 create mode 100644 tests/session/__init__.py
 create mode 100644 tests/session/test_session_fsync.py

diff --git a/nanobot/cli/commands.py b/nanobot/cli/commands.py
index cfa681b75..08e227610 100644
--- a/nanobot/cli/commands.py
+++ b/nanobot/cli/commands.py
@@ -946,6 +946,12 @@ def _run_gateway(
             cron.stop()
             agent.stop()
             await channels.stop_all()
+            # Flush all cached sessions to durable storage before exit.
+            # This prevents data loss on filesystems with write-back
+            # caching (rclone VFS, NFS, FUSE mounts, etc.).
+            flushed = agent.sessions.flush_all()
+            if flushed:
+                logger.info("Shutdown: flushed {} session(s) to disk", flushed)
 
     asyncio.run(run())
 
diff --git a/nanobot/session/manager.py b/nanobot/session/manager.py
index 4add4fd3b..392862ff7 100644
--- a/nanobot/session/manager.py
+++ b/nanobot/session/manager.py
@@ -262,8 +262,16 @@ class SessionManager:
             "messages": session.messages,
         }
 
-    def save(self, session: Session) -> None:
-        """Save a session to disk atomically."""
+    def save(self, session: Session, *, fsync: bool = False) -> None:
+        """Save a session to disk atomically.
+
+        When *fsync* is ``True`` the final file and its parent directory are
+        explicitly flushed to durable storage.  This is intentionally off by
+        default (the OS page-cache is sufficient for normal operation) but
+        should be enabled during graceful shutdown so that filesystems with
+        write-back caching (e.g. rclone VFS, NFS, FUSE mounts) do not lose
+        the most recent writes.
+        """
         path = self._get_session_path(session.key)
         tmp_path = path.with_suffix(".jsonl.tmp")
 
@@ -280,14 +288,41 @@ class SessionManager:
                 f.write(json.dumps(metadata_line, ensure_ascii=False) + "\n")
                 for msg in session.messages:
                     f.write(json.dumps(msg, ensure_ascii=False) + "\n")
+                if fsync:
+                    f.flush()
+                    os.fsync(f.fileno())
 
             os.replace(tmp_path, path)
+
+            if fsync:
+                # fsync the directory so the rename is durable.
+                fd = os.open(str(path.parent), os.O_RDONLY)
+                try:
+                    os.fsync(fd)
+                finally:
+                    os.close(fd)
         except BaseException:
             tmp_path.unlink(missing_ok=True)
             raise
 
         self._cache[session.key] = session
 
+    def flush_all(self) -> int:
+        """Re-save every cached session with fsync for durable shutdown.
+
+        Returns the number of sessions flushed.  Errors on individual
+        sessions are logged but do not prevent other sessions from being
+        flushed.
+        """
+        flushed = 0
+        for key, session in list(self._cache.items()):
+            try:
+                self.save(session, fsync=True)
+                flushed += 1
+            except Exception:
+                logger.warning("Failed to flush session {}", key, exc_info=True)
+        return flushed
+
     def invalidate(self, key: str) -> None:
         """Remove a session from the in-memory cache."""
         self._cache.pop(key, None)
diff --git a/tests/cli/test_commands.py b/tests/cli/test_commands.py
index 58e6ab2c4..0344af23b 100644
--- a/tests/cli/test_commands.py
+++ b/tests/cli/test_commands.py
@@ -1288,10 +1288,15 @@ def test_gateway_health_endpoint_binds_and_serves_expected_responses(
         async def run(self) -> None:
             return None
 
+    class _FakeSessionManager:
+        def flush_all(self) -> int:
+            return 0
+
     class _FakeAgentLoop:
         def __init__(self, **_kwargs) -> None:
             self.model = "test-model"
             self.dream = _FakeDream()
+            self.sessions = _FakeSessionManager()
 
         async def run(self) -> None:
             await asyncio.Event().wait()
diff --git a/tests/session/__init__.py b/tests/session/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/session/test_session_fsync.py b/tests/session/test_session_fsync.py
new file mode 100644
index 000000000..8e45c761c
--- /dev/null
+++ b/tests/session/test_session_fsync.py
@@ -0,0 +1,125 @@
+"""Tests for session fsync and flush_all on graceful shutdown."""
+
+from __future__ import annotations
+
+from pathlib import Path
+from unittest.mock import patch
+
+import pytest
+
+from nanobot.session.manager import SessionManager
+
+
+@pytest.fixture
+def sessions_dir(tmp_path: Path) -> Path:
+    d = tmp_path / "sessions"
+    d.mkdir()
+    return tmp_path
+
+
+@pytest.fixture
+def manager(sessions_dir: Path) -> SessionManager:
+    return SessionManager(workspace=sessions_dir)
+
+
+class TestSaveFsync:
+    """Verify that save(fsync=True) calls os.fsync."""
+
+    def test_save_without_fsync_does_not_call_fsync(self, manager: SessionManager):
+        session = manager.get_or_create("test:no-fsync")
+        session.add_message("user", "hello")
+
+        with patch("os.fsync") as mock_fsync:
+            manager.save(session, fsync=False)
+            mock_fsync.assert_not_called()
+
+    def test_save_with_fsync_calls_fsync(self, manager: SessionManager):
+        session = manager.get_or_create("test:with-fsync")
+        session.add_message("user", "hello")
+
+        with patch("os.fsync") as mock_fsync:
+            manager.save(session, fsync=True)
+            # Should be called twice: once for the file, once for the directory
+            assert mock_fsync.call_count == 2
+
+    def test_save_default_no_fsync(self, manager: SessionManager):
+        """Default save() should not fsync (backward compat)."""
+        session = manager.get_or_create("test:default")
+        session.add_message("user", "hello")
+
+        with patch("os.fsync") as mock_fsync:
+            manager.save(session)
+            mock_fsync.assert_not_called()
+
+
+class TestFlushAll:
+    """Verify flush_all re-saves all cached sessions with fsync."""
+
+    def test_flush_all_empty_cache(self, manager: SessionManager):
+        assert manager.flush_all() == 0
+
+    def test_flush_all_saves_cached_sessions(self, manager: SessionManager):
+        s1 = manager.get_or_create("test:session-1")
+        s1.add_message("user", "msg 1")
+        manager.save(s1)
+
+        s2 = manager.get_or_create("test:session-2")
+        s2.add_message("user", "msg 2")
+        manager.save(s2)
+
+        flushed = manager.flush_all()
+        assert flushed == 2
+
+    def test_flush_all_uses_fsync(self, manager: SessionManager):
+        session = manager.get_or_create("test:fsync-check")
+        session.add_message("user", "important")
+        manager.save(session)
+
+        with patch("os.fsync") as mock_fsync:
+            manager.flush_all()
+            # file fsync + directory fsync
+            assert mock_fsync.call_count == 2
+
+    def test_flush_all_continues_on_error(self, manager: SessionManager):
+        """One broken session should not prevent others from flushing."""
+        s1 = manager.get_or_create("test:good")
+        s1.add_message("user", "ok")
+        manager.save(s1)
+
+        s2 = manager.get_or_create("test:bad")
+        s2.add_message("user", "ok")
+        manager.save(s2)
+
+        original_save = manager.save
+        call_count = {"n": 0}
+
+        def patched_save(session, *, fsync=False):
+            call_count["n"] += 1
+            if session.key == "test:bad":
+                raise OSError("disk on fire")
+            original_save(session, fsync=fsync)
+
+        manager.save = patched_save
+        flushed = manager.flush_all()
+
+        # One succeeded, one failed — flush_all returns successful count
+        assert flushed == 1
+        assert call_count["n"] == 2
+
+    def test_flush_all_data_survives_reload(self, sessions_dir: Path):
+        """Data flushed by flush_all should survive a fresh SessionManager load."""
+        mgr1 = SessionManager(workspace=sessions_dir)
+        session = mgr1.get_or_create("test:persist")
+        session.add_message("user", "remember this")
+        session.add_message("assistant", "noted")
+        mgr1.save(session)
+        mgr1.flush_all()
+
+        # Simulate process restart — new manager, cold cache
+        mgr2 = SessionManager(workspace=sessions_dir)
+        reloaded = mgr2.get_or_create("test:persist")
+        history = reloaded.get_history(max_messages=100)
+
+        assert len(history) == 2
+        assert history[0]["content"] == "remember this"
+        assert history[1]["content"] == "noted"

From 09321898607109aecb2534143ea58f81d714137c Mon Sep 17 00:00:00 2001
From: hussein1362 <hussein.1362@gmail.com>
Date: Wed, 22 Apr 2026 06:47:25 +0300
Subject: [PATCH 32/32] fix: handle Windows PermissionError on directory fsync
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

On Windows, opening a directory with O_RDONLY raises PermissionError.
Wrap the directory fsync in a try/except PermissionError — NTFS journals
metadata synchronously so the directory sync is unnecessary there.

Also adjust test assertions to expect 1 fsync call (file only) on
Windows vs 2 (file + directory) on POSIX.
---
 nanobot/session/manager.py          | 14 ++++++++++----
 tests/session/test_session_fsync.py | 13 +++++++++----
 2 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/nanobot/session/manager.py b/nanobot/session/manager.py
index 392862ff7..436d8225c 100644
--- a/nanobot/session/manager.py
+++ b/nanobot/session/manager.py
@@ -296,11 +296,17 @@ class SessionManager:
 
             if fsync:
                 # fsync the directory so the rename is durable.
-                fd = os.open(str(path.parent), os.O_RDONLY)
+                # On Windows, opening a directory with O_RDONLY raises
+                # PermissionError — skip the dir sync there (NTFS
+                # journals metadata synchronously).
                 try:
-                    os.fsync(fd)
-                finally:
-                    os.close(fd)
+                    fd = os.open(str(path.parent), os.O_RDONLY)
+                    try:
+                        os.fsync(fd)
+                    finally:
+                        os.close(fd)
+                except PermissionError:
+                    pass  # Windows — directory fsync not supported
         except BaseException:
             tmp_path.unlink(missing_ok=True)
             raise
diff --git a/tests/session/test_session_fsync.py b/tests/session/test_session_fsync.py
index 8e45c761c..3194cf957 100644
--- a/tests/session/test_session_fsync.py
+++ b/tests/session/test_session_fsync.py
@@ -2,6 +2,7 @@
 
 from __future__ import annotations
 
+import sys
 from pathlib import Path
 from unittest.mock import patch
 
@@ -9,6 +10,8 @@ import pytest
 
 from nanobot.session.manager import SessionManager
 
+_IS_WINDOWS = sys.platform == "win32"
+
 
 @pytest.fixture
 def sessions_dir(tmp_path: Path) -> Path:
@@ -39,8 +42,9 @@ class TestSaveFsync:
 
         with patch("os.fsync") as mock_fsync:
             manager.save(session, fsync=True)
-            # Should be called twice: once for the file, once for the directory
-            assert mock_fsync.call_count == 2
+            # File fsync always runs; directory fsync only on non-Windows.
+            expected = 1 if _IS_WINDOWS else 2
+            assert mock_fsync.call_count == expected
 
     def test_save_default_no_fsync(self, manager: SessionManager):
         """Default save() should not fsync (backward compat)."""
@@ -77,8 +81,9 @@ class TestFlushAll:
 
         with patch("os.fsync") as mock_fsync:
             manager.flush_all()
-            # file fsync + directory fsync
-            assert mock_fsync.call_count == 2
+            # file fsync always; directory fsync only on non-Windows
+            expected = 1 if _IS_WINDOWS else 2
+            assert mock_fsync.call_count == expected
 
     def test_flush_all_continues_on_error(self, manager: SessionManager):
         """One broken session should not prevent others from flushing."""