fix: critical plugin structure and configuration fixes

- Fix hooks.json: use valid PostToolUse event (not invalid task-completed)
- Move projman/plugin.json to projman/.claude-plugin/plugin.json
- Fix projman/.mcp.json to use venv python paths
- Add cmdb-assistant to marketplace.json
- Update .gitignore: allow .env files (private repo)
- Fix create_labels.py: use env vars instead of hardcoded token
- Add CLAUDE.md critical rules section to prevent future mistakes

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

projman/.mcp.json

@@ -1,20 +1,14 @@
 {
   "mcpServers": {
     "gitea": {
-      "command": "python",
+      "command": "${CLAUDE_PLUGIN_ROOT}/../mcp-servers/gitea/.venv/bin/python",
       "args": ["-m", "mcp_server.server"],
-      "cwd": "${CLAUDE_PLUGIN_ROOT}/../mcp-servers/gitea",
-      "env": {
-        "PYTHONPATH": "${CLAUDE_PLUGIN_ROOT}/../mcp-servers/gitea"
-      }
+      "cwd": "${CLAUDE_PLUGIN_ROOT}/../mcp-servers/gitea"
     },
     "wikijs": {
-      "command": "python",
+      "command": "${CLAUDE_PLUGIN_ROOT}/../mcp-servers/wikijs/.venv/bin/python",
       "args": ["-m", "mcp_server.server"],
-      "cwd": "${CLAUDE_PLUGIN_ROOT}/../mcp-servers/wikijs",
-      "env": {
-        "PYTHONPATH": "${CLAUDE_PLUGIN_ROOT}/../mcp-servers/wikijs"
-      }
+      "cwd": "${CLAUDE_PLUGIN_ROOT}/../mcp-servers/wikijs"
     }
   }
 }