feat(F.16): Gitea plugin review, test & public release — v3.6.0

- Added update_webhook and delete_label tools (58 total Gitea tools)
- 97 unit tests (test_gitea_plugin.py)
- Gitea now public for all users (DEFAULT_PUBLIC_PLUGINS)
- Fixed merge_pull_request optional field handling

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

plugins/gitea/handlers/pull_requests.py

@@ -526,12 +526,13 @@ async def merge_pull_request(
     delete_branch_after_merge: bool = False,
 ) -> str:
     """Merge a pull request"""
-    data = {
-        "Do": method,
-        "MergeTitleField": title,
-        "MergeMessageField": message,
-        "delete_branch_after_merge": delete_branch_after_merge,
-    }
+    data: dict = {"Do": method}
+    if title is not None:
+        data["MergeTitleField"] = title
+    if message is not None:
+        data["MergeMessageField"] = message
+    if delete_branch_after_merge:
+        data["delete_branch_after_merge"] = True
     merge_result = await client.merge_pull_request(owner, repo, pr_number, data)
     result = {
         "success": True,