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/app/resolvespec_admin_test.go

@@ -80,6 +80,15 @@ func TestResolveSpecGuardAllowsSupportedMutations(t *testing.T) {
 		{name: "agent_guardrails create", entity: "agent_guardrails", operation: "create"},
 		{name: "agent_guardrails update", entity: "agent_guardrails", operation: "update"},
 		{name: "agent_guardrails delete", entity: "agent_guardrails", operation: "delete"},
+		{name: "agent_personas create", entity: "agent_personas", operation: "create"},
+		{name: "agent_personas update", entity: "agent_personas", operation: "update"},
+		{name: "agent_personas delete", entity: "agent_personas", operation: "delete"},
+		{name: "agent_parts create", entity: "agent_parts", operation: "create"},
+		{name: "agent_parts update", entity: "agent_parts", operation: "update"},
+		{name: "agent_parts delete", entity: "agent_parts", operation: "delete"},
+		{name: "agent_traits create", entity: "agent_traits", operation: "create"},
+		{name: "agent_traits update", entity: "agent_traits", operation: "update"},
+		{name: "agent_traits delete", entity: "agent_traits", operation: "delete"},
 		{name: "stored_files update", entity: "stored_files", operation: "update"},
 		{name: "stored_files delete", entity: "stored_files", operation: "delete"},
 	}
@@ -171,3 +180,27 @@ func TestResolveSpecModelsIncludeLearnings(t *testing.T) {
 	}
 	t.Fatal("resolveSpecModels() missing public.learnings")
 }
+
+func TestResolveSpecModelsIncludePersonaEntities(t *testing.T) {
+	models := resolveSpecModels()
+	required := map[string]bool{
+		"agent_personas": false,
+		"agent_parts":    false,
+		"agent_traits":   false,
+	}
+
+	for _, model := range models {
+		if model.schema != "public" {
+			continue
+		}
+		if _, ok := required[model.entity]; ok {
+			required[model.entity] = true
+		}
+	}
+
+	for entity, found := range required {
+		if !found {
+			t.Fatalf("resolveSpecModels() missing public.%s", entity)
+		}
+	}
+}