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/common.py

@@ -8,6 +8,7 @@ from typing import Any
 
 from pydantic import BaseModel, ConfigDict, Field, field_validator
 
+
 class PaginationParams(BaseModel):
     """Pagination parameters for list endpoints"""
 
@@ -16,6 +17,7 @@ class PaginationParams(BaseModel):
 
     model_config = ConfigDict(extra="forbid")
 
+
 class StatusFilter(BaseModel):
     """Status filter for posts/pages/products"""
 
@@ -29,6 +31,7 @@ class StatusFilter(BaseModel):
             raise ValueError(f"Status must be one of: {', '.join(allowed)}")
         return v
 
+
 class ErrorResponse(BaseModel):
     """Standard error response"""
 
@@ -37,6 +40,7 @@ class ErrorResponse(BaseModel):
     code: str | None = Field(None, description="Error code")
     details: dict[str, Any] | None = Field(None, description="Additional error details")
 
+
 class SuccessResponse(BaseModel):
     """Standard success response"""