fix: escape quotes and newlines in generated model descriptions

Fixed syntax error in generated.py caused by unescaped quotes and newlines
in Field descriptions from JSON schemas.

ISSUE:
- Multi-line descriptions with quotes broke Python syntax
- Line 92 had unterminated string literal causing mypy failure
- Descriptions from schemas weren't properly escaped

FIX:
- Escape double quotes in descriptions: " -> \"
- Replace newlines with spaces to keep descriptions single-line
- Also escape triple quotes in class-level docstrings
- Regenerated all models with proper escaping

RESULT:
- Python syntax is now valid (py_compile passes)
- All 50 generated models are properly formatted
- Type checker should now pass in CI

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: bokelley

scripts/generate_models_simple.py

@@ -32,7 +32,9 @@ def generate_model_for_schema(schema_file: Path) -> str:
 
     # Add description if available
     if "description" in schema:
-        lines.append(f'    """{schema["description"]}"""')
+        # Escape triple quotes in description and normalize whitespace
+        desc = schema["description"].replace('"""', '\\"\\"\\"').replace('\n', ' ').replace('\r', '')
+        lines.append(f'    """{desc}"""')
         lines.append("")
 
     # Add properties
@@ -44,8 +46,11 @@ def generate_model_for_schema(schema_file: Path) -> str:
         # Get type
         prop_type = get_python_type(prop_schema)
 
-        # Get description
+        # Get description and escape it properly
         desc = prop_schema.get("description", "")
+        # Escape quotes and replace newlines with spaces
+        if desc:
+            desc = desc.replace('"', '\\"').replace('\n', ' ').replace('\r', '')
 
         # Check if required
         is_required = prop_name in schema.get("required", [])

src/adcp/types/generated.py

@@ -89,9 +89,7 @@ class CreativeManifest(BaseModel):
 
     format_id: FormatId = Field(description="Format identifier this manifest is for")
     promoted_offering: str | None = Field(None, description="Product name or offering being advertised. Maps to promoted_offerings in create_media_buy request to associate creative with the product being promoted.")
-    assets: dict[str, Any] = Field(description="Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets_required array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.
-
-IMPORTANT: Creative manifest validation MUST be performed in the context of the format specification. The format defines what type each asset_id should be, which eliminates any validation ambiguity.")
+    assets: dict[str, Any] = Field(description="Map of asset IDs to actual asset content. Each key MUST match an asset_id from the format's assets_required array (e.g., 'banner_image', 'clickthrough_url', 'video_file', 'vast_tag'). The asset_id is the technical identifier used to match assets to format requirements.  IMPORTANT: Creative manifest validation MUST be performed in the context of the format specification. The format defines what type each asset_id should be, which eliminates any validation ambiguity.")
 
 
 class BrandManifest(BaseModel):