feat(claude-config-maintainer): auto-enforce mandatory behavior rules

SessionStart hook checks if CLAUDE.md has mandatory rules.
If missing, adds them automatically.

Rules enforced:
- Check everything when user asks
- Believe user when they say something's wrong
- Never say "done" without verification
- Show exactly what user asks for

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

plugins/claude-config-maintainer/hooks/hooks.json

@@ -0,0 +1,10 @@
+{
+  "hooks": {
+    "SessionStart": [
+      {
+        "type": "command",
+        "command": "${CLAUDE_PLUGIN_ROOT}/hooks/enforce-rules.sh"
+      }
+    ]
+  }
+}