Two display fixes based on real-world Feishu testing:
1. tool_hints.py: format_tool_hints now deduplicates by comparing the
fully formatted hint string instead of tool name alone. This fixes
`ls /Desktop` and `ls /Downloads` being incorrectly merged as
`ls /Desktop × 2`. Truly identical calls still fold correctly.
(_group_consecutive and all abbreviation logic preserved unchanged.)
2. feishu.py: inline tool hints now display one tool per line with
🔧 prefix, and use double-newline trailing to prevent Setext heading
rendering when followed by markdown `---`.
Made-with: Cursor
exec tool hints previously used val[:40] which cut paths mid-segment
(e.g. "D:\Documents\GitHub\nanobot.worktree…"). Now uses regex to
detect file paths in commands and abbreviates them properly, with
smart truncation at chain separators (&&, |, ;) as fallback.
- Move _tool_hint implementation from loop.py to nanobot/utils/tool_hints.py
- Keep thin delegation in AgentLoop._tool_hint for backward compat
- Update test imports to test format_tool_hints directly
Made-with: Cursor
