- Implemented TraitsTab.svelte to handle CRUD operations for agent traits.
- Integrated grid for displaying traits with context menu actions for add, edit, and delete.
- Added trait instruction editing functionality with a dedicated editor.
- Updated AdminShell to include PersonasPage for navigation.
- Enhanced AppSidebar with a new entry for Personas.
- Extended ShellPage type to include 'personas'.
- Defined new types for AgentPersona, AgentPart, and AgentTrait in types.ts.
All internal entity lookups now use bigserial primary keys (int64) while
GUIDs are retained for external/public identification. Updated store
functions (TouchProject, UpdateThoughtMetadata, AddThoughtAttachment) to
query by id instead of guid, added GetThoughtByID, changed semanticSearch
and all tool helpers to use *int64 project IDs, and updated retry/backfill
workers to use int64 thought IDs throughout.