* feat(feishu): add streaming support via CardKit PATCH API
Implement send_delta() for Feishu channel using interactive card
progressive editing:
- First delta creates a card with markdown content and typing cursor
- Subsequent deltas throttled at 0.5s to respect 5 QPS PATCH limit
- stream_end finalizes with full formatted card (tables, rich markdown)
Also refactors _send_message_sync to return message_id (str | None)
and adds _patch_card_sync for card updates.
Includes 17 new unit tests covering streaming lifecycle, config,
card building, and edge cases.
Made-with: Cursor
* feat(feishu): close CardKit streaming_mode on stream end
Call cardkit card.settings after final content update so chat preview
leaves default [生成中...] summary (Feishu streaming docs).
Made-with: Cursor
* style: polish Feishu streaming (PEP8 spacing, drop unused test imports)
Made-with: Cursor
* docs(feishu): document cardkit:card:write for streaming
- README: permissions, upgrade note for existing apps, streaming toggle
- CHANNEL_PLUGIN_GUIDE: Feishu CardKit scope and when to disable streaming
Made-with: Cursor
* docs: address PR 2382 review (test path, plugin guide, README, English docstrings)
- Move Feishu streaming tests to tests/channels/
- Remove Feishu CardKit scope from CHANNEL_PLUGIN_GUIDE (plugin-dev doc only)
- README Feishu permissions: consistent English
- feishu.py: replace Chinese in streaming docstrings/comments
Made-with: Cursor
