---
name: generate
description: Generate UI prototypes in matrix mode (style × layout combinations)
usage: /workflow:ui-design:generate [--pages "<list>"] [--base-path <path>] [--session <id>] [--style-variants <count>] [--layout-variants <count>]
argument-hint: "[--pages \"dashboard,auth\"] [--base-path \".workflow/WFS-xxx/runs/run-xxx/.design\"] [--style-variants 3] [--layout-variants 3]"
examples:
  - /workflow:ui-design:generate --base-path ".workflow/WFS-auth/runs/run-xxx/.design" --pages "dashboard,settings" --style-variants 3 --layout-variants 3
  - /workflow:ui-design:generate --session WFS-auth --pages "home,pricing" --style-variants 2 --layout-variants 2
  - /workflow:ui-design:generate --base-path "./design-session-xxx/.design" --style-variants 3 --layout-variants 3
allowed-tools: TodoWrite(*), Read(*), Write(*), Task(conceptual-planning-agent), Bash(*)
---

# UI Generation Command (Matrix Mode)

## Overview
Generate production-ready UI prototypes (HTML/CSS) in `style × layout` matrix mode, strictly adhering to consolidated design tokens from separate style design systems.

## Core Philosophy
- **Matrix-Only**: Single mode generating `style_variants × layout_variants × pages` prototypes
- **Agent-Driven**: Uses `Task(conceptual-planning-agent)` for parallel generation
- **Token-Driven**: All styles reference per-style design-tokens.json; no hardcoded values
- **Production-Ready**: Semantic HTML5, ARIA attributes, responsive design

## Execution Protocol

### Phase 1: Path Resolution & Context Loading
```bash
# Determine base path
IF --base-path provided:
    base_path = {provided_base_path}  # e.g., ".workflow/WFS-xxx/runs/run-xxx/.design"
ELSE IF --session provided:
    session_id = {provided_session}
    base_path = ".workflow/WFS-{session_id}/latest/.design"  # Use latest run
ELSE:
    # Standalone mode: search for most recent design-session in scratchpad
    base_path = find_latest_design_session(".workflow/.scratchpad/")

# Determine style and layout variant counts
style_variants = --style-variants OR 3  # Default to 3
layout_variants = --layout-variants OR 3  # Default to 3

VALIDATE: 1 <= style_variants <= 5
VALIDATE: 1 <= layout_variants <= 5

# Infer page list if not provided
IF --pages provided:
    page_list = parse_csv({--pages value})
ELSE IF --session:
    # Read synthesis-specification.md to extract page requirements
    synthesis_spec = Read(.workflow/WFS-{session}/.brainstorming/synthesis-specification.md)
    page_list = extract_pages_from_synthesis(synthesis_spec)
ELSE:
    # Infer from existing prototypes or default
    page_list = detect_from_prototypes({base_path}/prototypes/) OR ["home"]

VALIDATE: page_list not empty

# Verify design systems exist for all styles
FOR style_id IN range(1, style_variants + 1):
    VERIFY: {base_path}/style-consolidation/style-{style_id}/design-tokens.json exists
    VERIFY: {base_path}/style-consolidation/style-{style_id}/style-guide.md exists

# Load requirements (if integrated mode)
IF --session:
    synthesis_spec = Read(.workflow/WFS-{session}/.brainstorming/synthesis-specification.md)
```

### Phase 2: Matrix UI Generation (Parallel, Layout-Based)
Execute parallel agents to generate `style_variants × layout_variants × pages` prototypes.
Each agent handles ONE layout strategy across MULTIPLE styles (batched to max 8 styles per agent).

```bash
# Create output directory
CREATE: {base_path}/prototypes/

# Calculate style batches (max 8 styles per agent)
batch_size = 8
all_style_ids = range(1, style_variants + 1)
style_batches = split_into_chunks(all_style_ids, batch_size)  # e.g., [[1-8], [9-16]]

# Launch layout_variants × num_batches parallel tasks
FOR layout_id IN range(1, layout_variants + 1):
    FOR style_batch IN style_batches:
        Task(conceptual-planning-agent): "
          [UI_GENERATION_MATRIX_BATCH]

          Generate prototypes for layout-{layout_id} across a batch of styles.

          ## Context
          LAYOUT_ID: {layout_id}
          STYLE_IDS_BATCH: {style_batch}  # e.g., [1, 2, 3, 4, 5, 6, 7, 8]
          PAGES: {page_list}
          BASE_PATH: {base_path}

          ## Input Files
          For each style_id in your batch, you MUST load its corresponding files:
          - Design Tokens: {base_path}/style-consolidation/style-{style_id}/design-tokens.json
          - Style Guide: {base_path}/style-consolidation/style-{style_id}/style-guide.md
          {IF --session: - Requirements: .workflow/WFS-{session}/.brainstorming/synthesis-specification.md}

          ## Task
          For each style_id in {style_batch}:
            For each page in [{page_list}]:
              Generate the prototype files for the specific combination:
              - {page}-style-{style_id}-layout-{layout_id}.html (semantic HTML5)
              - {page}-style-{style_id}-layout-{layout_id}.css (token-driven, no hardcoded values)
              - {page}-style-{style_id}-layout-{layout_id}-notes.md (implementation notes)

          ## Layout Diversity Strategy
          You are responsible for Layout {layout_id}. Apply this strategy CONSISTENTLY to all styles in your batch.

          {IF layout_id == 1}
          **Layout 1: Classic Hierarchy**
          - Traditional F-pattern reading flow
          - Top navigation with sidebar
          - Card-based content sections
          {ELSE IF layout_id == 2}
          **Layout 2: Modern Asymmetric**
          - Z-pattern visual flow
          - Split-screen hero sections
          - Grid-based modular content
          {ELSE IF layout_id == 3}
          **Layout 3: Minimal Focus**
          - Centered single-column content
          - Floating navigation
          - Generous whitespace and breathing room
          {ELSE}
          **Layout {layout_id}: Custom Variant**
          - Develop a unique and consistent layout structure different from the standard three
          {ENDIF}

          Adapt this strategy to each page's purpose while maintaining layout consistency.

          ## Token Usage Requirements (STRICT)
          - For each style, load design tokens from its specific file: {base_path}/style-consolidation/style-{style_id}/design-tokens.json
          - All colors: var(--color-brand-primary), var(--color-surface-background), etc.
          - All spacing: var(--spacing-4), var(--spacing-6), etc.
          - All typography: var(--font-family-heading), var(--font-size-lg), etc.
          - NO hardcoded values (e.g., #4F46E5, 16px) allowed

          ## HTML Requirements
          - Semantic HTML5 elements (<header>, <nav>, <main>, <section>, <article>)
          - ARIA attributes for accessibility (role, aria-label, aria-labelledby)
          - Proper heading hierarchy (h1 → h2 → h3)
          - Mobile-first responsive design

          ## CSS Requirements
          - Link to design-tokens.css: <link rel=\"stylesheet\" href=\"../../design-tokens.css\">
          - Use CSS custom properties from design-tokens.json
          - Mobile-first media queries using token breakpoints
          - No inline styles
          - BEM or semantic class naming

          ## Responsive Design
          - Mobile: 375px+ (single column, stacked)
          - Tablet: var(--breakpoint-md) (adapted layout)
          - Desktop: var(--breakpoint-lg)+ (full layout)

          ## Output Location
          {base_path}/prototypes/

          ## Deliverables
          For each page-style-layout combination in your assigned batch:
          1. HTML file with token-driven structure
          2. CSS file with custom property references
          3. Notes file with implementation details and layout rationale

          Total files to generate: {len(page_list) * len(style_batch) * 3}
        "

# Wait for all {layout_variants * len(style_batches)} parallel tasks to complete
# Total prototypes: {style_variants * layout_variants * len(page_list)}
```

### Phase 3: Generate Preview Files

```bash
# Read matrix visualization template
template_content = Read("~/.claude/workflows/_template-compare-matrix.html")

# Prepare template variables
pages_json = JSON.stringify(page_list)
run_id = extract_run_id_from_base_path({base_path})

# Inject variables into template
injected_content = template_content
    .replace("{{run_id}}", run_id)
    .replace("{{style_variants}}", style_variants)
    .replace("{{layout_variants}}", layout_variants)
    .replace("{{pages_json}}", pages_json)

# Write interactive matrix comparison
Write({base_path}/prototypes/compare.html, injected_content)

# Generate design-tokens.css (unified CSS custom properties for all styles)
Write({base_path}/prototypes/design-tokens.css):
/* Auto-generated from all style design systems */
/* Note: Each prototype links to its specific style's tokens */

:root {
  /* Fallback tokens - each HTML file should link to its style-specific tokens */
  /* See style-consolidation/style-{n}/design-tokens.json for actual values */
}

# Generate simple index.html for quick navigation
Write({base_path}/prototypes/index.html):
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>UI Prototypes - Matrix View</title>
  <style>
    body {
      font-family: system-ui, sans-serif;
      max-width: 800px;
      margin: 2rem auto;
      padding: 0 1rem;
    }
    h1 { color: #2563eb; }
    .info {
      background: #f3f4f6;
      padding: 1rem;
      border-radius: 0.5rem;
      margin: 1rem 0;
    }
    .cta {
      display: inline-block;
      background: #2563eb;
      color: white;
      padding: 0.75rem 1.5rem;
      border-radius: 0.5rem;
      text-decoration: none;
      font-weight: 600;
      margin-top: 1rem;
    }
    .cta:hover { background: #1d4ed8; }
    .stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1rem;
      margin: 1.5rem 0;
    }
    .stat {
      background: white;
      border: 1px solid #e5e7eb;
      padding: 1rem;
      border-radius: 0.5rem;
      text-align: center;
    }
    .stat-value {
      font-size: 2rem;
      font-weight: bold;
      color: #2563eb;
    }
    .stat-label {
      color: #6b7280;
      font-size: 0.875rem;
      margin-top: 0.25rem;
    }
  </style>
</head>
<body>
  <h1>🎨 UI Prototype Matrix</h1>

  <div class="info">
    <p><strong>Matrix Configuration:</strong> {style_variants} styles × {layout_variants} layouts × {len(page_list)} pages</p>
    <p><strong>Total Prototypes:</strong> {style_variants * layout_variants * len(page_list)}</p>
  </div>

  <div class="stats">
    <div class="stat">
      <div class="stat-value">{style_variants}</div>
      <div class="stat-label">Style Variants</div>
    </div>
    <div class="stat">
      <div class="stat-value">{layout_variants}</div>
      <div class="stat-label">Layout Options</div>
    </div>
    <div class="stat">
      <div class="stat-value">{len(page_list)}</div>
      <div class="stat-label">Pages</div>
    </div>
  </div>

  <a href="compare.html" class="cta">🔍 Open Interactive Matrix Comparison →</a>

  <h2>Features</h2>
  <ul>
    <li>3×3 matrix grid view with synchronized scrolling</li>
    <li>Zoom controls (25%, 50%, 75%, 100%)</li>
    <li>Fullscreen mode for individual prototypes</li>
    <li>Selection system with export functionality</li>
    <li>Page switcher for multi-page comparison</li>
  </ul>

  <h2>Generated Pages</h2>
  <ul>
    {FOR page IN page_list:
      <li><strong>{page}</strong>: {style_variants × layout_variants} variants</li>
    }
  </ul>
</body>
</html>

# Generate PREVIEW.md with instructions
Write({base_path}/prototypes/PREVIEW.md):
# UI Prototype Preview Guide

## Quick Start
1. Open `compare.html` in a modern browser
2. Use the page selector to switch between pages
3. Interact with prototypes in the 3×3 matrix

## Matrix Configuration
- **Style Variants:** {style_variants}
- **Layout Options:** {layout_variants}
- **Pages:** {page_list}
- **Total Prototypes:** {style_variants * layout_variants * len(page_list)}

## File Naming Convention
`{page}-style-{s}-layout-{l}.html`

Example: `dashboard-style-1-layout-2.html`
- Page: dashboard
- Style: Design system 1
- Layout: Layout variant 2

## Interactive Features
- **Synchronized Scroll:** All prototypes scroll together
- **Zoom Controls:** Adjust viewport scale (25%-100%)
- **Fullscreen:** Click any prototype for detailed view
- **Selection:** Mark favorites for implementation
- **Export:** Save selections as JSON

## Design System References
Each prototype uses tokens from:
`../style-consolidation/style-{s}/design-tokens.json`

Refer to corresponding `style-guide.md` for design philosophy and usage guidelines.

## Next Steps
1. Review all variants in compare.html
2. Select preferred style×layout combinations
3. Export selections for implementation planning
4. Run `/workflow:ui-design:update` to integrate chosen designs
```

### Phase 4: TodoWrite & Completion

```javascript
TodoWrite({
  todos: [
    {content: "Resolve paths and load design systems", status: "completed", activeForm: "Loading design systems"},
    {content: `Generate ${style_variants}×${layout_variants}×${page_list.length} prototypes`, status: "completed", activeForm: "Generating matrix prototypes"},
    {content: "Generate interactive preview files", status: "completed", activeForm: "Generating preview"}
  ]
});
```

**Completion Message**:
```
✅ Matrix UI generation complete!

Configuration:
- Style Variants: {style_variants}
- Layout Options: {layout_variants}
- Pages: {page_list}
- Total Prototypes: {style_variants * layout_variants * len(page_list)}

Generated Files:
{FOR style_id IN range(1, style_variants + 1):
  {FOR layout_id IN range(1, layout_variants + 1):
    {FOR page IN page_list:
      - {page}-style-{style_id}-layout-{layout_id}.html
    }
  }
}

📂 Location: {base_path}/prototypes/

🌐 Interactive Preview:
1. Matrix View: Open compare.html (recommended)
2. Quick Index: Open index.html
3. Instructions: See PREVIEW.md

Features:
- 3×3 matrix grid with synchronized scrolling
- Zoom controls and fullscreen mode
- Selection export for implementation
- Per-page comparison

Next: /workflow:ui-design:update {--session flag if applicable}

Note: When called from /workflow:ui-design:auto, design-update is triggered automatically.
```

## Output Structure

```
{base_path}/prototypes/
├── compare.html                           # Interactive matrix visualization
├── index.html                             # Simple navigation page
├── PREVIEW.md                             # Preview instructions
├── design-tokens.css                      # CSS custom properties fallback
├── {page}-style-{s}-layout-{l}.html      # Matrix prototype files
├── {page}-style-{s}-layout-{l}.css
├── {page}-style-{s}-layout-{l}-notes.md
└── ... (all style×layout×page combinations)
```

## Error Handling
- **No design systems found**: Run `/workflow:ui-design:consolidate --keep-separate` first
- **Invalid page names**: Extract from synthesis-specification.md or error
- **Agent execution errors**: Report details, suggest retry
- **Missing template**: Provide fallback or error with template path

## Quality Checks
After generation, ensure:
- [ ] All CSS values reference design token custom properties
- [ ] No hardcoded colors, spacing, or typography
- [ ] Semantic HTML structure
- [ ] ARIA attributes present
- [ ] Responsive design implemented
- [ ] Mobile-first approach
- [ ] File naming follows `{page}-style-{s}-layout-{l}` convention
- [ ] compare.html loads correctly with all prototypes

## Key Features

1. **Matrix-Only Mode**: Simplified, focused workflow
2. **Parallel Generation**: All style×layout combinations in parallel
3. **Interactive Visualization**: Full-featured compare.html from template
4. **Per-Style Tokens**: Each prototype references its style's design system
5. **Systematic Exploration**: Consistent layout strategies across all styles

## Integration Points
- **Input**: Per-style design-tokens.json from `/workflow:ui-design:consolidate --keep-separate`
- **Output**: Matrix HTML/CSS prototypes for `/workflow:ui-design:update`
- **Template**: `~/.claude/workflows/_template-compare-matrix.html` (global)
- **Context**: synthesis-specification.md for page requirements (optional)