feat: expand MCP server tools for PR and label management, add helper CLI scripts

Closes #7

list_gitea_tools_prs.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+import os
+import sys
+
+# Auto-execute using the project's local virtual environment Python
+PROJECT_ROOT = os.path.dirname(os.path.abspath(__file__))
+venv_python = os.path.join(PROJECT_ROOT, "venv", "bin", "python3")
+if os.path.exists(venv_python) and sys.executable != venv_python:
+    os.execv(venv_python, [venv_python] + sys.argv)
+
+from gitea_auth import get_auth_header, api_request
+
+def main():
+    host = 'gitea.prgs.cc'
+    org = 'Scaled-Tech-Consulting'
+    repo = 'Gitea-Tools'
+    print(f"Checking repo: {host}/{org}/{repo}...")
+    try:
+        auth = get_auth_header(host)
+        if not auth:
+            print(f"  No auth header found for {host}")
+            return
+        url = f"https://{host}/api/v1/repos/{org}/{repo}/pulls?state=open"
+        prs = api_request("GET", url, auth)
+        if not prs:
+            print("  No open pull requests.")
+        for pr in prs:
+            print(f"  PR #{pr['number']}: {pr['title']}")
+            print(f"    Branch: {pr['head']['ref']} -> {pr['base']['ref']}")
+            print(f"    URL: {pr['html_url']}")
+            print(f"    Mergeable: {pr.get('mergeable')}")
+    except Exception as e:
+        print(f"  Error: {e}")
+
+if __name__ == '__main__':
+    main()