diff --git a/docs/superpowers/plans/2026-06-30-ai-ticket-platform-implementation-roadmap.md b/docs/superpowers/plans/2026-06-30-ai-ticket-platform-implementation-roadmap.md
index 6a5e515..d0c85a5 100644
--- a/docs/superpowers/plans/2026-06-30-ai-ticket-platform-implementation-roadmap.md
+++ b/docs/superpowers/plans/2026-06-30-ai-ticket-platform-implementation-roadmap.md
@@ -25,6 +25,7 @@ The product contains multiple independent subsystems. Do not implement the entir
 | 0 | Foundation and design system | Create the repo skeleton, local runtime, auth/RBAC baseline, audit baseline, frontend theme and component standards. | None | `docs/superpowers/plans/2026-06-30-stage-0-foundation-design-system.md` |
 | 1 | Ticket workflow and reusable solutions | Implement ticket lifecycle, comments, attachments, events, export, solution library, and solution links. | Stage 0 | Create after Stage 0 passes. |
 | 1.5 | shadcn enterprise UI foundation | Formalize shadcn/ui initialization, add a project-owned App component layer, redesign current ticket and solution pages, and enforce Chinese frontend text. | Stage 1 | `docs/superpowers/specs/2026-07-01-stage-1-5-shadcn-ui-foundation-design.md` |
+| 1.6 | Enterprise governance and login | Add login/logout/current-user APIs, user/user-group/role/menu management, API permission enforcement, permission-driven frontend menus, and deployment bootstrap. | Stage 1.5 | `docs/superpowers/specs/2026-07-01-stage-1-6-enterprise-governance-design.md` |
 | 2 | Knowledge base and vector retrieval | Implement knowledge bases, documents, parsing jobs, chunks, embeddings, and retrieval. | Stage 0, partial Stage 1 | Create after Stage 1 model contracts stabilize. |
 | 3 | Model gateway and Agent/Skill runtime | Implement provider configs, model configs, model testing, Skill configs, built-in Agents, runs, steps, AI artifacts. | Stage 0, Stage 1, Stage 2 retrieval interfaces | Create after Stage 2 retrieval contracts exist. |
 | 4 | MCP tools and trust boundary | Implement MCP server registration, tool sync, risk levels, Agent tool binding, tool calls, confirmation, audit. | Stage 3 | Create after Agent runtime exists. |
diff --git a/docs/superpowers/specs/2026-07-01-stage-1-6-enterprise-governance-design.md b/docs/superpowers/specs/2026-07-01-stage-1-6-enterprise-governance-design.md
new file mode 100644
index 0000000..db38124
--- /dev/null
+++ b/docs/superpowers/specs/2026-07-01-stage-1-6-enterprise-governance-design.md
@@ -0,0 +1,480 @@
+# Stage 1.6 Enterprise Governance Design
+
+## Background
+
+Stage 0 established an RBAC seed baseline with Django's built-in `User`, `Group`, and `Permission` models. Stage 1 added ticket and solution workflows. Stage 1.5 formalized shadcn/ui and created the enterprise admin UI base.
+
+The current governance capability is still incomplete for an enterprise product:
+
+- No frontend login or logout flow.
+- No current-user API for frontend permission and menu rendering.
+- No user management page.
+- No user group management page.
+- No role and permission management page.
+- No menu permission management page.
+- No API-level permission enforcement policy across ticket, solution, audit, and system governance APIs.
+- Docker deployment does not yet run a full governance bootstrap for default admin, roles, permissions, and menus.
+
+Stage 1.6 fills this gap before Stage 2 knowledge base and later Agent/model/MCP modules. Those later modules must not be built on top of anonymous APIs and hard-coded menus.
+
+## Decision
+
+Create a dedicated Stage 1.6 after Stage 1.5:
+
+```text
+Stage 0   = project skeleton + RBAC seed baseline
+Stage 1   = ticket workflow and solution library
+Stage 1.5 = shadcn enterprise UI foundation
+Stage 1.6 = login + users + user groups + roles + menus + permission enforcement
+Stage 2   = knowledge base and vector retrieval
+```
+
+Stage 1.6 is a frontend and backend stage. It must use the current shadcn/ui component base for all frontend governance pages.
+
+## Goals
+
+1. Add login, logout, and current-user APIs.
+2. Add frontend login experience and authenticated application shell.
+3. Add backend CRUD APIs for users, user groups, roles, permissions, and menus.
+4. Add frontend system governance pages using shadcn components.
+5. Add menu permission data so frontend navigation is driven by backend permission results instead of hard-coded public menus.
+6. Add API permission checks for ticket, solution, audit, and governance endpoints.
+7. Add deployment bootstrap so a fresh Docker environment can create default admin, permissions, roles, user groups, and menus.
+
+## Non-Goals
+
+- No SSO, LDAP, SAML, OAuth, enterprise WeChat, or DingTalk login.
+- No multi-tenant model.
+- No organization tree or department hierarchy.
+- No row-level data permission.
+- No field-level permission.
+- No approval workflow.
+- No password complexity policy beyond Django's baseline validation.
+- No MFA.
+- No public self-registration.
+- No Stage 2 knowledge base, model gateway, Agent, Skill, or MCP implementation.
+
+## Terminology
+
+| Product Term | Backend Representation | Notes |
+|---|---|---|
+| 用户 | Django `User` | Use Django's built-in user model for Stage 1.6. |
+| 角色 | Django `Group` | Product UI calls it "角色"; backend reuses Django Group permissions. |
+| 权限点 | Django `Permission` | Seeded by catalog. Canonical business code is like `ticket.view`. |
+| 用户组 | New `UserGroup` model | Business grouping independent from permission roles. |
+| 菜单权限 | New `MenuItem` model + permission code | Menus can require a permission code and are returned from `/me`. |
+| 按钮/操作权限 | Permission codenames | Frontend hides actions; backend still enforces. |
+
+## Backend Design
+
+### Authentication
+
+Use Django session authentication for Stage 1.6.
+
+Required endpoints under `/api/accounts/auth`:
+
+| Method | Path | Purpose |
+|---|---|---|
+| `GET` | `/csrf` | Set CSRF cookie for SPA login requests. |
+| `POST` | `/login` | Validate username/password and create Django session. |
+| `POST` | `/logout` | Clear current session. |
+| `GET` | `/me` | Return current user, roles, groups, permissions, and authorized menu tree. |
+
+Cross-origin local development must support session cookies:
+
+- Backend enables `CORS_ALLOW_CREDENTIALS = True`.
+- Backend configures `CSRF_TRUSTED_ORIGINS` from env.
+- Frontend API client sends `credentials: "include"`.
+- Login flow fetches CSRF before posting credentials.
+
+### Data Models
+
+Add models to `backend/apps/accounts/models.py`.
+
+#### UserGroup
+
+Business user group separate from role permissions:
+
+| Field | Type | Notes |
+|---|---|---|
+| `name` | varchar unique | Chinese display name. |
+| `code` | varchar unique | Stable code for integration and seeding. |
+| `description` | text blank | Optional description. |
+| `users` | many-to-many `User` | Group members. |
+| `is_active` | boolean | Disabled groups are not shown in normal assignment. |
+| `created_at` / `updated_at` | datetime | Audit-friendly timestamps. |
+
+#### MenuItem
+
+Backend-driven menu definition:
+
+| Field | Type | Notes |
+|---|---|---|
+| `code` | varchar unique | Stable menu code. |
+| `title` | varchar | Chinese title. |
+| `path` | varchar blank | Frontend hash route, such as `#/tickets`. |
+| `icon` | varchar blank | Frontend icon key understood by AppSidebar. |
+| `parent` | FK self nullable | Supports menu tree. |
+| `sort_order` | int | Ordering inside parent. |
+| `permission_code` | varchar blank | Business permission code required to see the menu. |
+| `is_visible` | boolean | Hidden menus can still exist for permissions. |
+| `is_enabled` | boolean | Disabled menus are excluded. |
+| `created_at` / `updated_at` | datetime | Audit-friendly timestamps. |
+
+Roles continue to use Django `Group`. Permissions continue to use Django `Permission`.
+
+### Permission Catalog
+
+Extend the permission catalog with Chinese names and governance permissions.
+
+Required governance permission codes:
+
+```text
+system.user.view
+system.user.manage
+system.user_group.view
+system.user_group.manage
+system.role.view
+system.role.manage
+system.menu.view
+system.menu.manage
+system.audit.view
+system.setting.manage
+```
+
+Existing business permissions remain:
+
+```text
+ticket.view
+ticket.create
+ticket.edit
+ticket.export
+ticket.assign
+ticket.close
+solution.view
+solution.manage
+knowledge.view
+knowledge.manage
+agent.use
+agent.manage
+model.manage
+tool.manage
+```
+
+When checking permissions through Django, use `system.<business_code>` because the seeded permission content type uses app label `system`.
+
+Example:
+
+```python
+request.user.has_perm("system.ticket.view")
+```
+
+### Seed And Bootstrap
+
+Stage 1.6 should add a single bootstrap command that is safe to run repeatedly:
+
+```bash
+python manage.py bootstrap_governance
+```
+
+The command must:
+
+1. Seed permissions.
+2. Seed default roles.
+3. Seed default user groups.
+4. Seed default menus.
+5. Create or update a default admin user from env vars.
+
+Recommended env vars:
+
+```dotenv
+DJANGO_SUPERUSER_USERNAME=admin
+DJANGO_SUPERUSER_PASSWORD=admin12345
+DJANGO_SUPERUSER_EMAIL=admin@example.com
+```
+
+Default roles:
+
+| Role | Meaning |
+|---|---|
+| 系统管理员 | All permissions. |
+| 知识库管理员 | Knowledge and solution management. |
+| 技术支持 | Ticket handling and Agent usage. |
+| 普通建单人 | Create/view own relevant tickets first; broad row-level ownership is deferred. |
+| 只读审计员 | View tickets, solutions, knowledge, and audit logs. |
+
+Default menus:
+
+```text
+工作台
+  运营总览
+业务处理
+  工单中心
+  创建工单
+  解决方案库
+平台能力
+  知识库
+  Agent 配置
+  模型与工具
+系统治理
+  用户管理
+  用户组管理
+  角色权限
+  菜单权限
+  操作审计
+  设计系统
+```
+
+Menus for future modules may be seeded but hidden or disabled until their stage is implemented.
+
+### Governance APIs
+
+Add APIs under `/api/accounts`.
+
+#### Current User
+
+`GET /api/accounts/auth/me` returns:
+
+```json
+{
+  "id": 1,
+  "username": "admin",
+  "display_name": "系统管理员",
+  "email": "admin@example.com",
+  "is_superuser": true,
+  "roles": [{"id": 1, "name": "系统管理员"}],
+  "user_groups": [{"id": 1, "name": "默认用户组", "code": "default"}],
+  "permissions": ["ticket.view", "system.user.manage"],
+  "menus": [
+    {
+      "code": "workbench",
+      "title": "工作台",
+      "path": "",
+      "icon": "home",
+      "children": []
+    }
+  ]
+}
+```
+
+#### User APIs
+
+| Method | Path | Permission |
+|---|---|---|
+| `GET` | `/users` | `system.user.view` |
+| `POST` | `/users` | `system.user.manage` |
+| `GET` | `/users/{id}` | `system.user.view` |
+| `PATCH` | `/users/{id}` | `system.user.manage` |
+| `POST` | `/users/{id}/reset-password` | `system.user.manage` |
+| `POST` | `/users/{id}/roles` | `system.user.manage` |
+| `POST` | `/users/{id}/user-groups` | `system.user.manage` |
+
+#### User Group APIs
+
+| Method | Path | Permission |
+|---|---|---|
+| `GET` | `/user-groups` | `system.user_group.view` |
+| `POST` | `/user-groups` | `system.user_group.manage` |
+| `PATCH` | `/user-groups/{id}` | `system.user_group.manage` |
+| `POST` | `/user-groups/{id}/members` | `system.user_group.manage` |
+
+#### Role And Permission APIs
+
+| Method | Path | Permission |
+|---|---|---|
+| `GET` | `/roles` | `system.role.view` |
+| `POST` | `/roles` | `system.role.manage` |
+| `PATCH` | `/roles/{id}` | `system.role.manage` |
+| `POST` | `/roles/{id}/permissions` | `system.role.manage` |
+| `GET` | `/permissions` | `system.role.view` |
+
+#### Menu APIs
+
+| Method | Path | Permission |
+|---|---|---|
+| `GET` | `/menus` | `system.menu.view` |
+| `POST` | `/menus` | `system.menu.manage` |
+| `PATCH` | `/menus/{id}` | `system.menu.manage` |
+| `POST` | `/menus/reorder` | `system.menu.manage` |
+
+### API Permission Enforcement
+
+Add a small accounts permission helper:
+
+```text
+require_login(request)
+require_permission(request, "ticket.view")
+```
+
+Enforcement rules:
+
+- `/api/system/health` remains public.
+- `/api/accounts/auth/csrf` and `/api/accounts/auth/login` remain public.
+- `/api/accounts/auth/me` requires login.
+- Audit log list requires `system.audit.view`.
+- Ticket list/detail/export require `ticket.view`.
+- Ticket create requires `ticket.create`.
+- Ticket update/status/comment/attachment operations require the closest ticket operation permission.
+- Solution list/detail require `solution.view`.
+- Solution create/link requires `solution.manage`.
+
+Frontend hiding is not security. Backend permission checks are mandatory for all protected operations.
+
+## Frontend Design
+
+### Auth Flow
+
+Add frontend auth state:
+
+```text
+AuthProvider
+  ├─ load /api/accounts/auth/me
+  ├─ login(username, password)
+  ├─ logout()
+  └─ exposes user, permissions, menus, loading, authenticated
+```
+
+Application flow:
+
+```text
+Unauthenticated → LoginPage
+Authenticated   → AppShell + Router
+```
+
+The login page must use shadcn components and Chinese text:
+
+- `Card`
+- `Input`
+- `Button`
+- `Alert`
+- `Label` or shadcn `Field` if installed
+
+### API Client
+
+Update `frontend/src/lib/api.ts`:
+
+- Send `credentials: "include"`.
+- Include CSRF token for unsafe methods.
+- Convert `401` into an auth state transition.
+- Keep error messages Chinese where shown to users.
+
+### Sidebar Menus
+
+`AppSidebar` should no longer own the final hard-coded menu list. It should consume menu data from `AuthProvider`.
+
+Rules:
+
+- Backend returns only menus the user can see.
+- Frontend still handles unknown future paths with disabled or placeholder behavior.
+- Icon mapping is local and controlled, using lucide-react icons.
+- All menu text is Chinese.
+
+### Governance Pages
+
+Add a new feature module:
+
+```text
+frontend/src/features/system/
+```
+
+Required pages:
+
+| Route | Page | Purpose |
+|---|---|---|
+| `#/system/users` | 用户管理 | List, create, edit active state, assign roles and user groups, reset password. |
+| `#/system/user-groups` | 用户组管理 | List/create/edit business user groups and members. |
+| `#/system/roles` | 角色权限 | List/create/edit roles and assign permissions. |
+| `#/system/menus` | 菜单权限 | View/edit menu tree, menu metadata, and required permission. |
+| `#/audit` | 操作审计 | Reuse existing audit API with protected access. |
+
+Required shadcn components:
+
+- Existing Stage 1.5 components: `button`, `badge`, `card`, `input`, `textarea`, `select`, `label`, `separator`, `sidebar`, `breadcrumb`, `dropdown-menu`, `table`, `tabs`, `sheet`, `dialog`, `tooltip`, `skeleton`, `sonner`.
+- Add if not installed: `checkbox`, `switch`, `alert`, `empty`, `pagination`.
+
+Project App components should remain the page-level API:
+
+- `AppDataTable`
+- `AppFilterBar`
+- `AppPageHeader`
+- `AppSection`
+- `AppEmptyState`
+- system-specific wrappers if useful, such as `PermissionMatrix` and `RolePermissionEditor`.
+
+### Page Experience
+
+The governance UI should feel like an enterprise admin console, not a demo:
+
+- Dense tables with Chinese column names.
+- Dialog or Sheet for create/edit.
+- Permission assignment grouped by module.
+- Clear active/disabled status badges.
+- Empty states in Chinese.
+- Loading skeletons for initial data fetch.
+- Toast feedback via `sonner`.
+
+## Deployment Initialization
+
+Docker/local startup should support a fresh database:
+
+```text
+backend startup:
+  python manage.py migrate
+  python manage.py bootstrap_governance
+  python manage.py runserver 0.0.0.0:8000
+```
+
+The exact startup implementation can be an entrypoint script or documented command. The important requirement is that a new developer can bring up Docker Compose and log in with the seeded admin account after migrations finish.
+
+## Security Notes
+
+- Default admin password is acceptable only for local/dev. Production deployments must override env vars.
+- Backend permission checks are the source of truth.
+- Superusers bypass permission assignment checks through Django's built-in behavior, but `/me` should still return all business permission codes.
+- Passwords are never returned in API responses.
+- User deletion should not be implemented in Stage 1.6; use deactivate instead.
+
+## Testing Requirements
+
+Backend tests:
+
+- Login succeeds with seeded admin.
+- `/me` returns user, roles, permissions, and filtered menus.
+- Anonymous access to protected endpoints returns 401 or 403.
+- Permissioned users can access allowed endpoints.
+- Users without permissions are denied.
+- User CRUD, role permission assignment, user group membership, and menu update APIs work.
+- Bootstrap command is idempotent.
+
+Frontend verification:
+
+- `npm run typecheck`
+- `npm run build`
+- Browser smoke test:
+  - anonymous user sees login page
+  - seeded admin can log in
+  - system governance menus appear
+  - user/role/menu pages render Chinese UI
+  - logout returns to login
+
+Full project verification:
+
+```bash
+cd backend
+python -m pytest -v
+python -m ruff check .
+
+cd frontend
+npm run typecheck
+npm run build
+```
+
+## Acceptance Criteria
+
+- Fresh deployment can create database schema, seed governance data, and log in with the configured admin account.
+- Frontend is no longer usable as an anonymous public app except for the login page.
+- Sidebar menus come from backend-authorized menu data.
+- Users, user groups, roles, permissions, and menus are manageable from Chinese frontend pages.
+- Backend enforces permissions for ticket, solution, audit, and governance APIs.
+- Frontend uses shadcn/ui primitives and project App components for all new governance UI.
+- No Stage 2 knowledge base or AI platform features are implemented in this stage.