feat: add debug workflow commands and bump to v3.1.0

New commands for structured debugging workflow:

/debug-report (for test projects):
- Runs 5 diagnostic MCP tool tests
- Captures full project context (git remote, cwd, branch)
- Generates structured issue with hypothesis
- Creates issue in marketplace repo automatically

/debug-review (for marketplace repo):
- Lists open diagnostic issues for triage
- Maps errors to relevant code files
- MANDATORY: Reads files before proposing fixes
- Three human approval gates
- Creates feature branch, commits, PR with linking

Also includes:
- Dynamic label format detection in suggest_labels
- Rewritten labels-sync.md with explicit execution steps
- Version bump to 3.1.0

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

.claude-plugin/marketplace.json

@@ -6,12 +6,12 @@
   },
   "metadata": {
     "description": "Project management plugins with Gitea and NetBox integrations",
-    "version": "3.0.1"
+    "version": "3.1.0"
   },
   "plugins": [
     {
       "name": "projman",
-      "version": "3.0.0",
+      "version": "3.1.0",
       "description": "Sprint planning and project management with Gitea integration",
       "source": "./plugins/projman",
       "author": {