feat: add Kimi CLI support for spawn backends

[he-yufeng]

Summary

Adds first-class support for Kimi CLI (Moonshot AI) as a spawn target, alongside Claude, Codex, Nanobot, and Gemini.

Changes

Both backends (tmux_backend.py, subprocess_backend.py):

• _is_kimi_command() — detects kimi binary
• Permission skipping via --yolo flag
• Workspace directory via -w flag (same pattern as nanobot)
• Prompt injection via --print -p flags (non-interactive mode with prompt)

Tmux backend additionally:

• Workspace trust confirmation (kimi uses the same trust dialog as Claude)
• _is_interactive_cli() updated to include Kimi
• Generic send-keys fallback skips Kimi (prompt already baked into command)

Tests: 3 new tests covering tmux spawn, subprocess spawn, and workspace trust detection. All 187 tests pass.

Usage

# team config
[agents.coder]
command = ["kimi"]

clawteam spawn coder --skip-permissions --prompt "fix the bug"
# → kimi --yolo -w /path/to/workspace --print -p 'fix the bug'

Key Kimi CLI flags used

Flag	Purpose
--yolo	Auto-approve all tool calls (like Claude's --dangerously-skip-permissions)
-w PATH	Set working directory
--print	Non-interactive mode (exits after completion)
-p "prompt"	Pass task prompt

Test plan

• pytest tests/test_spawn_backends.py — 17/17 pass
• pytest (full suite) — 187/187 pass
• ruff check — clean