feat(hook): add TRAE IDE agent support

[WalissonRodrigo]

Summary

Add ByteDance TRAE as a new rules-based agent integration in RTK. TRAE reads markdown rules from .trae/rules/\ (project-scoped), following the same pattern as Antigravity and Kilo Code.

Changes

New Files

• \hooks/trae/rules.md\ — RTK usage instructions for TRAE agent
• \hooks/trae/README.md\ — Hook documentation

Modified Files

• \src/main.rs\ — Added \Trae\ variant to \AgentTarget\ enum + routing in Init handler
• \src/hooks/init.rs\ — Added \TRAE_RULES\ constant,
  un_trae_mode(),
  un_trae_mode_at()\ + 2 unit tests
• \hooks/README.md\ — Added TRAE to scope, directory structure, supported agents table
• \README.md\ — Added TRAE to Quick Start and Supported AI Tools table (13 agents)

Usage

\�ash
rtk init --agent trae # Installs .trae/rules/rtk-rules.md in current project
\

Integration Tier

Rules file (prompt-level guidance) — low maintenance, no code to break. TRAE reads .trae/rules/\ markdown files as context for its AI agent.

Testing

Check	Result
\cargo fmt --all --check\	✅ Passed
\cargo clippy --all-targets\	✅ Passed (0 errors)
\cargo test trae\	✅ 2/2 passed
\ est_trae_mode_creates_rules_file\	✅ Verifies .trae/rules/rtk-rules.md is created
\ est_trae_mode_is_idempotent\	✅ Second run does not overwrite

Checklist

• Unit tests added
• Documentation updated (hooks/README.md, README.md)
• \cargo fmt --all --check && cargo clippy --all-targets && cargo test\ passes
• Follows existing agent integration patterns (Antigravity, Kilo Code)
• Conventional commit format used

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2 out of 3 committers have signed the CLA.

✅ aeppling
✅ WalissonRodrigo
❌ github-actions[bot]
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[KuSh]

Closing as a duplicate of #3008, which adds Trae support through a native PreToolUse hook with install, uninstall and test coverage, and keeps its diff to the feature. Thanks for the work here. Review and comments are welcome on #3008.