feat: 完成 B 群組 — 資料層與核心領域模型

- 導入 Prisma 7.9.1 + SQLite（better-sqlite3 driver adapter），prisma.config.ts 管理連線設定
- 完整資料模型：User／Work／Character／CharacterAlias／EpisodicMemory／SemanticMemory／
  ProceduralRule／EmotionState／Relationship／SentimentLedgerEntry
- packages/db：Prisma Client 存取層（ESM，因 Prisma 7 產出的 generated client 僅支援 ESM）
- apps/api 隨之改為 ESM 以相容 packages/db
- packages/shared：新增角色／記憶／情緒／關係共用型別，api 與 web 皆從此匯入
- prisma/seed.ts：建立測試使用者與元氣型測試角色，含完整關係帳本與記憶種子資料
- apps/api：新增 GET /characters
- scripts/smoke/B.mjs：驗證資料表齊全、API 讀出種子角色、關係與記憶可寫入讀出
- 保留 Prisma 官方隨 CLI 附的 agent skill 文件（.agents/skills 等），供後續群組查閱

npm run restart && npm run smoke -- B 皆通過（B-V），A 群組冒煙測試無回歸。

.agents/skills/prisma-cli/references/dev.md

@@ -0,0 +1,157 @@
+# prisma dev
+
+Starts a local Prisma Postgres database for development. Provides a PostgreSQL-compatible database that runs entirely on your machine.
+
+## Command
+
+```bash
+prisma dev [options]
+```
+
+## What It Does
+
+- Starts a local PostgreSQL-compatible database
+- Runs in your terminal or as a background process
+- Perfect for development and testing
+- Easy migration to Prisma Postgres cloud in production
+
+## Options
+
+| Option | Description | Default |
+|--------|-------------|---------|
+| `--name` / `-n` | Name for the database instance | `default` |
+| `--port` / `-p` | HTTP server port | `51213` |
+| `--db-port` / `-P` | Database server port | `51214` |
+| `--shadow-db-port` | Shadow database port (for migrations) | `51215` |
+| `--detach` / `-d` | Run in background | `false` |
+| `--debug` | Enable debug logging | `false` |
+
+## Examples
+
+### Start local database
+
+```bash
+prisma dev
+```
+
+Interactive mode with keyboard shortcuts:
+- `q` - Quit
+- `h` - Show HTTP URL  
+- `t` - Show TCP URLs
+
+### Named instance
+
+```bash
+prisma dev --name myproject
+```
+
+Useful for multiple projects.
+
+### Background mode
+
+```bash
+prisma dev --detach
+```
+
+Frees your terminal for other commands.
+
+### Custom ports
+
+```bash
+prisma dev --port 5000 --db-port 5432
+```
+
+## Instance Management
+
+### List all instances
+
+```bash
+prisma dev ls
+```
+
+Shows all local Prisma Postgres instances with status.
+
+### Start existing instance
+
+```bash
+prisma dev start myproject
+```
+
+Starts a previously created instance in background.
+
+### Stop instance
+
+```bash
+prisma dev stop myproject
+```
+
+### Stop with glob pattern
+
+```bash
+prisma dev stop "myproject*"
+```
+
+Stops all instances matching pattern.
+
+### Remove instance
+
+```bash
+prisma dev rm myproject
+```
+
+Removes instance data from filesystem.
+
+### Force remove (stops first)
+
+```bash
+prisma dev rm myproject --force
+```
+
+## Configuration
+
+Configure your `prisma.config.ts` to use local Prisma Postgres:
+
+```typescript
+import 'dotenv/config'
+import { defineConfig, env } from 'prisma/config'
+
+export default defineConfig({
+  schema: 'prisma/schema.prisma',
+  migrations: {
+    path: 'prisma/migrations',
+  },
+  datasource: {
+    // Local Prisma Postgres URL (from prisma dev output)
+    url: env('DATABASE_URL'),
+  },
+})
+```
+
+## Workflow
+
+1. Start local database:
+   ```bash
+   prisma dev
+   ```
+
+2. In another terminal, run migrations:
+   ```bash
+   prisma migrate dev
+   ```
+
+3. Generate client:
+   ```bash
+   prisma generate
+   ```
+
+4. Run your application
+
+## Production Migration
+
+When ready for production, switch to Prisma Postgres cloud:
+
+```bash
+prisma init --db
+```
+
+Update your `DATABASE_URL` to the cloud connection string.