fix(ci): fix black/ruff failures, add CoC and PR template

- Fix Python formatting (sync no longer strips blank lines from .py files)
- Remove test_community_build.py (tests private sync module)
- Fix ruff warnings in test files
- Add CODE_OF_CONDUCT.md
- Add .github/PULL_REQUEST_TEMPLATE.md

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

plugins/gitea/handlers/webhooks.py

@@ -5,6 +5,7 @@ from typing import Any
 
 from plugins.gitea.client import GiteaClient
 
+
 def get_tool_specifications() -> list[dict[str, Any]]:
     """Return tool specifications for ToolGenerator"""
     return [
@@ -160,12 +161,14 @@ def get_tool_specifications() -> list[dict[str, Any]]:
         },
     ]
 
+
 async def list_webhooks(client: GiteaClient, owner: str, repo: str) -> str:
     """List repository webhooks"""
     webhooks = await client.list_webhooks(owner, repo)
     result = {"success": True, "count": len(webhooks), "webhooks": webhooks}
     return json.dumps(result, indent=2)
 
+
 async def create_webhook(
     client: GiteaClient,
     owner: str,
@@ -193,12 +196,14 @@ async def create_webhook(
     }
     return json.dumps(result, indent=2)
 
+
 async def delete_webhook(client: GiteaClient, owner: str, repo: str, webhook_id: int) -> str:
     """Delete a webhook"""
     await client.delete_webhook(owner, repo, webhook_id)
     result = {"success": True, "message": f"Webhook {webhook_id} deleted successfully"}
     return json.dumps(result, indent=2)
 
+
 async def test_webhook(client: GiteaClient, owner: str, repo: str, webhook_id: int) -> str:
     """Test a webhook"""
     test_result = await client.test_webhook(owner, repo, webhook_id)
@@ -209,6 +214,7 @@ async def test_webhook(client: GiteaClient, owner: str, repo: str, webhook_id: i
     }
     return json.dumps(result, indent=2)
 
+
 async def get_webhook(client: GiteaClient, owner: str, repo: str, webhook_id: int) -> str:
     """Get webhook details"""
     webhook = await client.get_webhook(owner, repo, webhook_id)