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/studio.md

@@ -0,0 +1,137 @@
+# prisma studio
+
+Opens a visual database browser for viewing and editing data.
+
+## Command
+
+```bash
+prisma studio [options]
+```
+
+## What It Does
+
+- Starts a web-based database GUI
+- View all your models and records
+- Create, update, and delete records
+- Filter and sort data
+- Navigate relations
+
+## Options
+
+| Option | Description | Default |
+|--------|-------------|---------|
+| `--port` / `-p` | Port to start Studio on | `5555` |
+| `--browser` / `-b` | Browser to open Studio in | System default |
+| `--config` | Custom path to your Prisma config file | - |
+| `--url` | Database connection string (overrides the one in your Prisma config) | - |
+
+## Examples
+
+### Open Studio
+
+```bash
+prisma studio
+```
+
+Opens at http://localhost:5555
+
+### Custom port
+
+```bash
+prisma studio --port 3000
+```
+
+### Specific browser
+
+```bash
+prisma studio --browser firefox
+```
+
+### Don't open browser
+
+```bash
+BROWSER=none prisma studio
+```
+
+Useful for remote servers.
+
+## Features
+
+### View Records
+
+- See all records in table format
+- Pagination for large datasets
+- Column sorting
+
+### Filter Data
+
+- Filter by any field
+- Multiple conditions
+- Relation filtering
+
+### Edit Records
+
+- Click to edit inline
+- Add new records
+- Delete records (with confirmation)
+
+### Navigate Relations
+
+- Click relations to view related records
+- See counts of related items
+- Follow relation links
+
+## Recent Studio Capabilities
+
+Recent Prisma Studio releases added richer editor workflows:
+
+- multi-cell selection and editing
+- full-table search and more intuitive filtering
+- command palette shortcuts
+- dark mode
+- copy selections as Markdown
+- back-relation navigation
+- SQL workflows including raw SQL queries
+
+Some recent builds also expose AI-assisted SQL authoring. Treat these as interactive Studio features rather than a replacement for checked-in migrations or application queries.
+
+## Use Cases
+
+- **Development**: Quick data inspection
+- **Debugging**: Check data state
+- **Testing**: Verify seed data
+- **Demo**: Show data to stakeholders
+
+## Limitations
+
+- Development tool only
+- Not for production use
+- Limited to configured database
+- Prisma Studio in Prisma 7 currently targets PostgreSQL, MySQL, and SQLite first
+- For reproducible application logic, prefer Prisma Client and checked-in SQL scripts
+
+## Common Workflow
+
+1. Run migrations:
+   ```bash
+   prisma migrate dev
+   ```
+
+2. Seed data:
+   ```bash
+   prisma db seed
+   ```
+
+3. Open Studio to verify:
+   ```bash
+   prisma studio
+   ```
+
+4. Make manual edits if needed
+
+## Security Note
+
+Studio provides direct database access. Only run on:
+- Local development machines
+- Secure internal networks
+- Never expose publicly