Merge feature/82-personality-module (#82) into develop

Implements Personality Module:
- Personality model and Prisma migration
- CRUD API with controller and service
- Comprehensive test suite
- Integration with workspace

apps/web/src/lib/api/personalities.ts

@@ -0,0 +1,81 @@
+/**
+ * Personality API Client
+ * Handles personality-related API requests
+ */
+
+import type { Personality, FormalityLevel } from "@mosaic/shared";
+import { apiGet, apiPost, apiPatch, apiDelete, type ApiResponse } from "./client";
+
+/**
+ * Create personality DTO
+ */
+export interface CreatePersonalityDto {
+  name: string;
+  description?: string;
+  tone: string;
+  formalityLevel: FormalityLevel;
+  systemPromptTemplate: string;
+  isDefault?: boolean;
+  isActive?: boolean;
+}
+
+/**
+ * Update personality DTO
+ */
+export interface UpdatePersonalityDto {
+  name?: string;
+  description?: string;
+  tone?: string;
+  formalityLevel?: FormalityLevel;
+  systemPromptTemplate?: string;
+  isDefault?: boolean;
+  isActive?: boolean;
+}
+
+/**
+ * Fetch all personalities
+ */
+export async function fetchPersonalities(
+  isActive: boolean = true
+): Promise<ApiResponse<Personality[]>> {
+  const endpoint = `/api/personalities?isActive=${isActive}`;
+  return apiGet<ApiResponse<Personality[]>>(endpoint);
+}
+
+/**
+ * Fetch the default personality
+ */
+export async function fetchDefaultPersonality(): Promise<Personality> {
+  return apiGet<Personality>("/api/personalities/default");
+}
+
+/**
+ * Fetch a single personality by ID
+ */
+export async function fetchPersonality(id: string): Promise<Personality> {
+  return apiGet<Personality>(`/api/personalities/${id}`);
+}
+
+/**
+ * Create a new personality
+ */
+export async function createPersonality(data: CreatePersonalityDto): Promise<Personality> {
+  return apiPost<Personality>("/api/personalities", data);
+}
+
+/**
+ * Update a personality
+ */
+export async function updatePersonality(
+  id: string,
+  data: UpdatePersonalityDto
+): Promise<Personality> {
+  return apiPatch<Personality>(`/api/personalities/${id}`, data);
+}
+
+/**
+ * Delete a personality
+ */
+export async function deletePersonality(id: string): Promise<void> {
+  return apiDelete<void>(`/api/personalities/${id}`);
+}