Summary

Ensure templates can reference both builtin and user-defined personality presets, and that the template rendering pipeline resolves them correctly.

Current State

Templates already support this via two fields in TemplateAgentConfig (src/synthorg/templates/schema.py):

• personality_preset: NotBlankStr | None -- reference a preset by name
• personality: dict[str, Any] | None -- inline custom personality dict
• Mutual exclusion validation exists (cannot specify both)

The renderer (src/synthorg/templates/renderer.py) resolves presets via get_personality_preset() during template expansion.

What's Needed

Once user-defined preset CRUD is implemented:

1. Template rendering must look up custom presets (from DB) in addition to builtin presets
2. The get_personality_preset() function needs to be extended to check the custom preset store
3. Template validation should warn (not error) when a preset doesn't exist yet (it may be created before the template is instantiated)
4. Template export/import should handle custom preset references gracefully

Dependencies

• User-defined personality preset CRUD API -- provides the persistence layer
• Personality preset discovery API -- provides the lookup mechanism

Notes

This is mostly wiring -- the schema and rendering pipeline already support the pattern. The main change is extending preset resolution to include the custom preset store.