feat: add TraitsTab component for managing agent traits

- 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.

internal/mcpserver/server.go

@@ -748,12 +748,6 @@ func BuildToolCatalog() []tools.ToolEntry {
 		{Name: "reparse_thought_metadata", Description: "Re-extract and normalize metadata for stored thoughts from their content.", Category: "admin"},
 		{Name: "retry_failed_metadata", Description: "Retry metadata extraction for thoughts still marked pending or failed.", Category: "admin"},
 
-		// maintenance
-		{Name: "add_maintenance_task", Description: "Create a recurring or one-time home maintenance task.", Category: "maintenance"},
-		{Name: "log_maintenance", Description: "Log completed maintenance work; automatically updates the task's next due date.", Category: "maintenance"},
-		{Name: "get_upcoming_maintenance", Description: "List maintenance tasks due within the next N days.", Category: "maintenance"},
-		{Name: "search_maintenance_history", Description: "Search the maintenance log by task name, category, or date range.", Category: "maintenance"},
-
 		// skills
 		{Name: "add_skill", Description: "Store a reusable agent skill. Supports language_tags, library_tags, framework_tags, and domain_tags for precise retrieval.", Category: "skills"},
 		{Name: "remove_skill", Description: "Delete an agent skill by id.", Category: "skills"},