diff --git a/docs/superpowers/plans/2026-07-02-stage-1-8-shadcn-admin-ui-standardization.md b/docs/superpowers/plans/2026-07-02-stage-1-8-shadcn-admin-ui-standardization.md
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+# Stage 1.8 Shadcn Admin UI Standardization Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Rebuild the frontend UI foundation around shadcn/ui so future pages inherit a consistent enterprise admin layout, mobile navigation, form standard, select composition, and visual baseline.
+
+**Architecture:** shadcn/ui remains the source component library. Project `App*` components become thin composition wrappers around shadcn primitives, while feature pages consume those wrappers instead of hand-rolled layout. The first implementation batch fixes shell navigation, field primitives, select composition, and high-frequency forms.
+
+**Tech Stack:** React 19, Vite, TypeScript, Tailwind v3, shadcn/ui `radix-nova`, Radix primitives, lucide-react.
+
+---
+
+## File Structure
+
+- Modify: `frontend/src/app/layout/AppShell.tsx` - passes mobile menu state into topbar/sidebar sheet.
+- Modify: `frontend/src/components/app/AppSidebar.tsx` - extracts reusable navigation content and adds sheet-friendly rendering.
+- Modify: `frontend/src/components/app/AppTopbar.tsx` - adds mobile menu button and keeps desktop actions.
+- Create: `frontend/src/components/ui/field.tsx` - shadcn field primitive from CLI, merged without losing local component changes.
+- Modify: `frontend/src/components/app/AppField.tsx` - thin wrapper over shadcn field primitives.
+- Modify: `frontend/src/features/**` select call sites - wrap `SelectItem` with `SelectGroup`.
+- Modify: `frontend/src/features/auth/LoginPage.tsx` - migrate login form fields.
+- Modify: `frontend/src/features/tickets/TicketCreatePage.tsx` - migrate main create form fields.
+- Modify: `frontend/src/features/solutions/SolutionCreatePage.tsx` - migrate solution form fields.
+- Modify: `frontend/src/features/system/SystemUsersPage.tsx`, `SystemRolesPage.tsx`, `SystemUserGroupsPage.tsx` - migrate quick-create forms where practical.
+- Test/verify: `npm run typecheck`, `npm run build`, grep scans, desktop/mobile browser checks.
+
+---
+
+### Task 1: Mobile Shell Navigation
+
+**Files:**
+- Modify: `frontend/src/app/layout/AppShell.tsx`
+- Modify: `frontend/src/components/app/AppSidebar.tsx`
+- Modify: `frontend/src/components/app/AppTopbar.tsx`
+
+- [ ] **Step 1: Inspect current shell boundaries**
+
+Run:
+
+```powershell
+Get-Content frontend/src/app/layout/AppShell.tsx
+Get-Content frontend/src/components/app/AppSidebar.tsx
+Get-Content frontend/src/components/app/AppTopbar.tsx
+```
+
+Expected: `AppShell` renders fixed sidebar and topbar; sidebar is desktop-only.
+
+- [ ] **Step 2: Add mobile menu state in shell**
+
+Implement `mobileNavOpen` state in `AppShell`, pass `onMobileMenuClick` into topbar, and pass `mobileOpen/onMobileOpenChange` into sidebar.
+
+- [ ] **Step 3: Extract sidebar navigation content**
+
+In `AppSidebar`, extract grouped nav rendering into `SidebarNavContent({ onNavigate })`. Use the same component for desktop and mobile sheet.
+
+- [ ] **Step 4: Render mobile Sheet**
+
+Use existing shadcn `Sheet`, `SheetContent`, `SheetHeader`, and `SheetTitle`. The sheet title must be present for accessibility. Menu item clicks call `onNavigate`.
+
+- [ ] **Step 5: Add topbar mobile trigger**
+
+Add a `Button size="icon" variant="ghost"` visible below `lg`, with `Menu` icon using `data-icon` and `aria-label="打开导航"`.
+
+- [ ] **Step 6: Verify**
+
+Run:
+
+```powershell
+npm run typecheck
+```
+
+Expected: exit code 0.
+
+---
+
+### Task 2: Install and Merge Shadcn Field Primitive
+
+**Files:**
+- Create: `frontend/src/components/ui/field.tsx`
+- May modify: `frontend/src/components/ui/label.tsx`
+- May modify: `frontend/src/components/ui/separator.tsx`
+- Modify: `frontend/src/components/app/AppField.tsx`
+
+- [ ] **Step 1: Preview CLI changes**
+
+Run:
+
+```powershell
+$env:NODE_USE_ENV_PROXY = "1"; $env:HTTP_PROXY = "http://127.0.0.1:7897"; $env:HTTPS_PROXY = "http://127.0.0.1:7897"; cd frontend; npx shadcn@latest add field --dry-run
+```
+
+Expected: creates `field.tsx`, previews updates to `label.tsx` and `separator.tsx`.
+
+- [ ] **Step 2: Inspect diffs before applying**
+
+Run:
+
+```powershell
+$env:NODE_USE_ENV_PROXY = "1"; $env:HTTP_PROXY = "http://127.0.0.1:7897"; $env:HTTPS_PROXY = "http://127.0.0.1:7897"; cd frontend; npx shadcn@latest add field --diff field.tsx
+$env:NODE_USE_ENV_PROXY = "1"; $env:HTTP_PROXY = "http://127.0.0.1:7897"; $env:HTTPS_PROXY = "http://127.0.0.1:7897"; cd frontend; npx shadcn@latest add field --diff label.tsx
+$env:NODE_USE_ENV_PROXY = "1"; $env:HTTP_PROXY = "http://127.0.0.1:7897"; $env:HTTPS_PROXY = "http://127.0.0.1:7897"; cd frontend; npx shadcn@latest add field --diff separator.tsx
+```
+
+Expected: understand local changes before applying.
+
+- [ ] **Step 3: Add the field component**
+
+Apply the CLI result, then inspect changed files. If `label.tsx` or `separator.tsx` overwrite local customizations, restore needed local behavior manually.
+
+- [ ] **Step 4: Rebuild AppField**
+
+Make `AppField` render shadcn `Field`, `FieldLabel`, and optional `FieldDescription`. Support `htmlFor`, `required`, `invalid`, and `description` props.
+
+- [ ] **Step 5: Verify**
+
+Run:
+
+```powershell
+npm run typecheck
+```
+
+Expected: exit code 0.
+
+---
+
+### Task 3: Select Composition Sweep
+
+**Files:**
+- Modify: `frontend/src/features/tickets/TicketFilterBar.tsx`
+- Modify: `frontend/src/features/tickets/TicketCreatePage.tsx`
+- Modify: `frontend/src/features/tickets/TicketComments.tsx`
+- Modify: `frontend/src/features/solutions/SolutionListPage.tsx`
+- Modify: `frontend/src/features/solutions/SolutionCreatePage.tsx`
+- Modify: `frontend/src/features/design-system/DesignSystemPreview.tsx`
+
+- [ ] **Step 1: Add SelectGroup imports**
+
+For each file importing select primitives, add `SelectGroup`.
+
+- [ ] **Step 2: Wrap select items**
+
+Change:
+
+```tsx
+<SelectContent>
+  <SelectItem value="all">全部状态</SelectItem>
+</SelectContent>
+```
+
+to:
+
+```tsx
+<SelectContent>
+  <SelectGroup>
+    <SelectItem value="all">全部状态</SelectItem>
+  </SelectGroup>
+</SelectContent>
+```
+
+- [ ] **Step 3: Scan**
+
+Run:
+
+```powershell
+rg "SelectContent>[\\s\\S]*SelectItem|<SelectContent>\\s*<SelectItem" frontend/src -n
+```
+
+Expected: no direct `SelectItem` immediately under `SelectContent`.
+
+- [ ] **Step 4: Verify**
+
+Run:
+
+```powershell
+npm run typecheck
+```
+
+Expected: exit code 0.
+
+---
+
+### Task 4: High-Frequency Form Migration
+
+**Files:**
+- Modify: `frontend/src/features/auth/LoginPage.tsx`
+- Modify: `frontend/src/features/tickets/TicketCreatePage.tsx`
+- Modify: `frontend/src/features/solutions/SolutionCreatePage.tsx`
+- Modify: `frontend/src/features/system/SystemUsersPage.tsx`
+- Modify: `frontend/src/features/system/SystemRolesPage.tsx`
+- Modify: `frontend/src/features/system/SystemUserGroupsPage.tsx`
+
+- [ ] **Step 1: Migrate login fields**
+
+Use `AppField htmlFor="username"` and `AppField htmlFor="password"`. Inputs receive matching `id` and `aria-invalid={Boolean(error)}` only where field-specific invalid state is needed.
+
+- [ ] **Step 2: Migrate create ticket fields**
+
+Use `AppField` for title, priority, impact scope, related system, environment, and description. Required fields use `required`.
+
+- [ ] **Step 3: Migrate create solution fields**
+
+Use `AppField` for title, status, related system, environment scope, problem signature, root cause, solution, and risk note.
+
+- [ ] **Step 4: Migrate quick-create system forms**
+
+Keep compact horizontal layout, but each input lives inside `AppField` so labels remain visible and shadcn field semantics are consistent.
+
+- [ ] **Step 5: Verify**
+
+Run:
+
+```powershell
+npm run typecheck
+npm run build
+```
+
+Expected: both exit code 0.
+
+---
+
+### Task 5: Full UI Verification and Commit
+
+**Files:**
+- All modified frontend files
+
+- [ ] **Step 1: Run shadcn context check**
+
+Run:
+
+```powershell
+$env:NODE_USE_ENV_PROXY = "1"; $env:HTTP_PROXY = "http://127.0.0.1:7897"; $env:HTTPS_PROXY = "http://127.0.0.1:7897"; cd frontend; npx shadcn@latest info
+```
+
+Expected: current project remains `Vite`, `Tailwind v3`, `radix-nova`, `lucide`.
+
+- [ ] **Step 2: Run source scans**
+
+Run:
+
+```powershell
+rg "space-[xy]-|<SelectContent>\\s*<SelectItem|className=.*size-4" frontend/src/features frontend/src/components/app -n
+```
+
+Expected: no new violations in migrated surfaces. Remaining non-button decorative icon sizes are acceptable only if not inside shadcn components.
+
+- [ ] **Step 3: Browser checks**
+
+Check desktop and mobile widths for:
+- Login
+- Workbench
+- Ticket list
+- Create ticket
+- System users
+
+Expected: mobile has navigation entry, no horizontal scroll, forms have visible labels.
+
+- [ ] **Step 4: Commit**
+
+Run:
+
+```powershell
+git add frontend/src docs/superpowers/specs/2026-07-02-stage-1-8-shadcn-admin-ui-standardization-design.md docs/superpowers/plans/2026-07-02-stage-1-8-shadcn-admin-ui-standardization.md
+git commit -m "feat: standardize shadcn admin ui foundation"
+```
+
+Expected: commit created on current branch.
+
diff --git a/docs/superpowers/specs/2026-07-02-stage-1-8-shadcn-admin-ui-standardization-design.md b/docs/superpowers/specs/2026-07-02-stage-1-8-shadcn-admin-ui-standardization-design.md
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+# Stage 1.8 Shadcn Admin UI Standardization Design
+
+## Goal
+
+Stage 1.8 upgrades the frontend from page-by-page polish into a stable enterprise admin UI foundation. All website UI must use shadcn/ui as the unified component library and visual source of truth.
+
+## Principles
+
+- Use shadcn/ui first. Business pages compose `@/components/ui/*` and the project App component layer; no second UI library.
+- Keep frontend display text Chinese, concise, and operational.
+- Use shadcn semantic tokens for color: `background`, `foreground`, `card`, `muted`, `primary`, `secondary`, `border`, `ring`, `destructive`.
+- Do not introduce a separate theme system. `theme-factory` is used only as a quality checklist for contrast, responsive behavior, spacing, and perceived polish.
+- Prefer dense but calm enterprise admin screens over marketing layouts, oversized hero blocks, decorative gradients, or AI-purple visual identity.
+
+## Scope
+
+### P1 Mobile Navigation
+
+The current desktop sidebar is hidden on small screens, while the shell only reserves desktop left padding. Stage 1.8 adds a mobile navigation entry in the top bar and renders the same menu tree inside a shadcn `Sheet`.
+
+Expected behavior:
+- Desktop keeps fixed sidebar.
+- Mobile shows a menu button in the top bar.
+- Tapping the button opens a side sheet with the same grouped navigation.
+- Tapping a menu item closes the sheet.
+- Logged-in users can navigate to every visible enabled module on mobile.
+
+### P2 Form Standardization
+
+Forms must migrate toward shadcn `FieldGroup`, `Field`, `FieldLabel`, and `FieldDescription` primitives. The project `AppField` remains only as a thin wrapper around shadcn field primitives, not as a custom label/grid replacement.
+
+Expected behavior:
+- Required fields have visible labels.
+- Invalid fields can express `data-invalid` and `aria-invalid`.
+- Form layout uses `FieldGroup` and `Field` instead of raw `div` stacks.
+- Login, create ticket, create solution, and system management quick-create forms become the first migrated surfaces.
+
+### P2 Select Composition
+
+Every shadcn select menu must use `SelectContent > SelectGroup > SelectItem`. Direct `SelectItem` children under `SelectContent` are not allowed.
+
+First migrated surfaces:
+- Ticket filter bar
+- Ticket create priority
+- Ticket comments visibility
+- Solution list status filter
+- Solution create status
+- Design system preview select
+
+### P3 Brand and Admin Visual Standard
+
+Brand identity should come from consistent admin structure, not decorative theme divergence.
+
+Visual baseline:
+- Platform mark: compact text mark for `AI 工单平台`.
+- Sidebar: grouped navigation, clear active state, consistent icon scale.
+- Topbar: mobile menu, workspace breadcrumb, environment badge, user actions.
+- Content: consistent page width, gutters, card/table density, and section spacing.
+- No decorative gradients, emoji icons, or raw color palettes in business pages.
+
+## Migration Order
+
+1. Shell and navigation foundation.
+2. shadcn field component integration.
+3. Select composition sweep.
+4. High-frequency forms migration.
+5. Page visual pass for login, workbench, tickets, solutions, and system governance.
+
+## Verification
+
+- `npm run typecheck`
+- `npm run build`
+- `npx shadcn@latest info` with local proxy env
+- Source scan for direct `SelectContent > SelectItem` patterns
+- Source scan for form pages still using placeholder-only labels
+- Browser checks at desktop width and mobile width for login, dashboard, tickets, create ticket, and system users
+