feat(hook): add Kimi Code CLI integration

[zoorpha]

Summary

This PR adds full Kimi Code CLI integration to RTK, enabling transparent command rewriting via Kimi's PreToolUse hook system (Beta).

What's included

• rtk hook kimi — Native Rust hook processor that reads Kimi's PreToolUse JSON from stdin and outputs structured rewrite responses
• rtk init -g --kimi — Installs the hook by patching ~/.kimi/config.toml with a TOML-safe [[hooks]] entry
• rtk init -g --kimi --uninstall — Removes KIMI.md and the hook entry from config.toml
• rtk init --show --kimi — Displays Kimi-specific configuration status

Hook mechanism

Kimi's hook system receives JSON via stdin:

{"tool_name":"Shell","tool_input":{"command":"git status"}}

And supports structured output to modify commands:

{"hookSpecificOutput":{"hookEventName":"PreToolUse","permissionDecisionReason":"RTK auto-rewrite","updatedInput":{"command":"rtk git status"}}}

Technical details

• Reuses the existing process_claude_payload function since Kimi's JSON format is compatible with Claude Code's hookSpecificOutput.updatedInput structure
• TOML patching uses the toml crate (already a dependency) to preserve existing user configuration
• Idempotent: running rtk init -g --kimi multiple times won't duplicate the hook
• Follows RTK's "Never Block" principle — all error paths exit 0 so Kimi always runs the original command on failure

Tests

• 5 new unit tests in src/hooks/hook_cmd.rs for the Kimi hook processor
• 5 new unit tests in src/hooks/init.rs for config patching, idempotency, and uninstall
• All 1600 tests pass

Documentation

• README.md — Added Kimi to supported AI tools table
• INSTALL.md — Added Kimi installation, uninstall, and checklist instructions
• hooks/README.md — Added Kimi JSON format and agent listing
• hooks/kimi/README.md — New dedicated Kimi hook documentation

Checklist

• Unit tests added/updated
• Documentation updated
• cargo fmt --all --check passes
• cargo clippy --all-targets passes (no new warnings)
• cargo test passes (1600 tests)
• Manual test: rtk hook kimi rewrites commands correctly
• Manual test: rtk init -g --kimi --auto-patch patches config.toml correctly

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[pszymkowiak]

[w] wshm · Automated triage by AI

📊 Automated PR Analysis

✨ Type	feature
🟢 Risk	low

Summary

Adds Kimi Code CLI integration to RTK, including a native Rust hook processor (rtk hook kimi), config.toml patching via rtk init -g --kimi, uninstall support, and dedicated documentation. The implementation reuses the existing Claude Code hook processor since Kimi's PreToolUse JSON format is compatible.

Review Checklist

• Tests present
• Breaking change
• Docs updated

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Analyzed automatically by wshm · This is an automated analysis, not a human review.