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/schemas/webhook.py

@@ -9,6 +9,7 @@ from typing import Any
 
 from pydantic import BaseModel, ConfigDict, Field, field_validator
 
+
 class Webhook(BaseModel):
     """Gitea webhook model"""
 
@@ -22,6 +23,7 @@ class Webhook(BaseModel):
     updated_at: datetime
     created_at: datetime
 
+
 class WebhookConfig(BaseModel):
     """Webhook configuration"""
 
@@ -33,6 +35,7 @@ class WebhookConfig(BaseModel):
     http_method: str | None = "POST"
     branch_filter: str | None = None
 
+
 class CreateWebhookRequest(BaseModel):
     """Request to create a webhook"""
 
@@ -109,6 +112,7 @@ class CreateWebhookRequest(BaseModel):
             v["content_type"] = "json"
         return v
 
+
 class UpdateWebhookRequest(BaseModel):
     """Request to update a webhook"""
 
@@ -152,6 +156,7 @@ class UpdateWebhookRequest(BaseModel):
                 raise ValueError(f"Invalid event: {event}")
         return v
 
+
 class WebhookTestResult(BaseModel):
     """Webhook test result"""