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/wordpress/schemas/media.py

@@ -6,6 +6,7 @@ Validation schemas for WordPress media library operations.
 
 from pydantic import BaseModel, ConfigDict, Field, HttpUrl, field_validator
 
+
 class MediaBase(BaseModel):
     """Base media schema"""
 
@@ -16,6 +17,7 @@ class MediaBase(BaseModel):
     caption: str | None = Field(None, description="Media caption")
     description: str | None = Field(None, description="Media description")
 
+
 class MediaUpload(MediaBase):
     """Schema for uploading media from URL"""
 
@@ -33,12 +35,14 @@ class MediaUpload(MediaBase):
                 raise ValueError("Filename too long (max 255 characters)")
         return v
 
+
 class MediaUpdate(MediaBase):
     """Schema for updating media metadata"""
 
     # All fields optional for updates
     pass
 
+
 class MediaResponse(BaseModel):
     """Schema for media response data"""