feat(#82): implement Personality Module

- Add Personality model to Prisma schema with FormalityLevel enum
- Create migration and seed with 6 default personalities
- Implement CRUD API with TDD approach (97.67% coverage)
  * PersonalitiesService: findAll, findOne, findDefault, create, update, remove
  * PersonalitiesController: REST endpoints with auth guards
  * Comprehensive test coverage (21 passing tests)
- Add Personality types to shared package
- Create frontend components:
  * PersonalitySelector: dropdown for choosing personality
  * PersonalityPreview: preview personality style and system prompt
  * PersonalityForm: create/edit personalities with validation
  * Settings page: manage personalities with CRUD operations
- Integrate with Ollama API:
  * Support personalityId in chat endpoint
  * Auto-inject system prompt from personality
  * Fall back to default personality if not specified
- API client for frontend personality management

All tests passing with 97.67% backend coverage (exceeds 85% requirement)

apps/web/src/components/domains/DomainList.tsx

@@ -0,0 +1,51 @@
+"use client";
+
+import type { Domain } from "@mosaic/shared";
+import { DomainItem } from "./DomainItem";
+
+interface DomainListProps {
+  domains: Domain[];
+  isLoading: boolean;
+  onEdit?: (domain: Domain) => void;
+  onDelete?: (domain: Domain) => void;
+}
+
+export function DomainList({
+  domains,
+  isLoading,
+  onEdit,
+  onDelete,
+}: DomainListProps): JSX.Element {
+  if (isLoading) {
+    return (
+      <div className="flex justify-center items-center p-8">
+        <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-gray-900"></div>
+        <span className="ml-3 text-gray-600">Loading domains...</span>
+      </div>
+    );
+  }
+
+  if (!domains || domains.length === 0) {
+    return (
+      <div className="text-center p-8 text-gray-500">
+        <p className="text-lg">No domains created yet</p>
+        <p className="text-sm mt-2">
+          Create domains to organize your tasks and projects
+        </p>
+      </div>
+    );
+  }
+
+  return (
+    <div className="grid gap-4 md:grid-cols-2 lg:grid-cols-3">
+      {domains.map((domain) => (
+        <DomainItem
+          key={domain.id}
+          domain={domain}
+          onEdit={onEdit}
+          onDelete={onDelete}
+        />
+      ))}
+    </div>
+  );
+}