feat(commit-message): add commit-message skill and agent config

- Add SKILL.md with workflow and guidelines for generating Conventional Commits messages
- Add agent config (.kiro/agents/commit-message.json) with tool permissions and skill resource
- Add evals (evals.json) with 3 test cases covering feat/fix/refactor scenarios
- Add Conventional Commits 1.0.0 reference documentation
- Add compiled skill bundle (commit-message.skill)

.kiro/agents/commit-message.json

@@ -0,0 +1,10 @@
+{
+  "name": "commit-message",
+  "description": "Agent specializing in generating Conventional Commits messages.",
+  "prompt": "You are an expert at generating git commit messages following the Conventional Commits 1.0.0 specification. Your goal is to analyze staged changes and provide a high-quality, professional commit message. Always use the `commit-message` skill for guidance.",
+  "tools": ["fs_read", "execute_bash", "grep", "glob"],
+  "allowedTools": ["fs_read", "execute_bash", "grep", "glob"],
+  "resources": [
+    "skill://skills/commit-message/SKILL.md"
+  ]
+}