- name
- baoyu-cover-image
- description
- Generates article cover images with 5 dimensions (type, palette, rendering, text, mood) combining 9 color palettes and 6 rendering styles. Supports cinematic (2.35:1), widescreen (16:9), and square (1:1) aspects. Use when user asks to "generate cover image", "create article cover", or "make cover".
# Cover Image Generator
Generate elegant cover images for articles with 5-dimensional customization.
## Usage
```bash
# Auto-select all dimensions based on content
/baoyu-cover-image path/to/article.md
# Quick mode: skip confirmation, use auto-selection
/baoyu-cover-image article.md --quick
# Specify dimensions (new 5D system)
/baoyu-cover-image article.md --type conceptual --palette warm --rendering flat-vector
/baoyu-cover-image article.md --text title-subtitle --mood bold
# Style presets (backward-compatible shorthand for palette + rendering)
/baoyu-cover-image article.md --style blueprint
/baoyu-cover-image article.md --style blueprint --rendering hand-drawn # override rendering
# Visual only (no title text)
/baoyu-cover-image article.md --no-title
# Direct content input
/baoyu-cover-image
[paste content]
# Direct input with options
/baoyu-cover-image --palette mono --rendering digital --aspect 1:1 --quick
[paste content]
# With reference images
/baoyu-cover-image article.md --ref style-ref.png
/baoyu-cover-image article.md --ref ref1.png ref2.png --quick
```
## Options
| Option | Description |
|--------|-------------|
| `--type <name>` | Cover type: hero, conceptual, typography, metaphor, scene, minimal |
| `--palette <name>` | Color palette: warm, elegant, cool, dark, earth, vivid, pastel, mono, retro |
| `--rendering <name>` | Rendering style: flat-vector, hand-drawn, painterly, digital, pixel, chalk |
| `--style <name>` | Preset shorthand (expands to palette + rendering, see [Style Presets](references/style-presets.md)) |
| `--text <level>` | Text density: none, title-only, title-subtitle, text-rich |
| `--mood <level>` | Emotional intensity: subtle, balanced, bold |
| `--aspect <ratio>` | 16:9 (default), 2.35:1, 4:3, 3:2, 1:1, 3:4 |
| `--lang <code>` | Title language (en, zh, ja, etc.) |
| `--no-title` | Alias for `--text none` |
| `--quick` | Skip confirmation, use auto-selection for missing dimensions |
| `--ref <files...>` | Reference images for style/composition guidance |
## Five Dimensions
| Dimension | Controls | Values | Default |
|-----------|----------|--------|---------|
| **Type** | Visual composition, information structure | hero, conceptual, typography, metaphor, scene, minimal | auto |
| **Palette** | Colors, color scheme, decorative hints | warm, elegant, cool, dark, earth, vivid, pastel, mono, retro | auto |
| **Rendering** | Line quality, texture, depth, element style | flat-vector, hand-drawn, painterly, digital, pixel, chalk | auto |
| **Text** | Text density, information hierarchy | none, title-only, title-subtitle, text-rich | title-only |
| **Mood** | Emotional intensity, visual weight | subtle, balanced, bold | balanced |
Dimensions can be freely combined. Auto-selection rules: [references/auto-selection.md](references/auto-selection.md)
## Type Gallery
| Type | Description | Best For |
|------|-------------|----------|
| `hero` | Large visual impact, title overlay | Product launch, brand promotion, major announcements |
| `conceptual` | Concept visualization, abstract core ideas | Technical articles, methodology, architecture design |
| `typography` | Text-focused layout, prominent title | Opinion pieces, quotes, insights |
| `metaphor` | Visual metaphor, concrete expressing abstract | Philosophy, growth, personal development |
| `scene` | Atmospheric scene, narrative feel | Stories, travel, lifestyle |
| `minimal` | Minimalist composition, generous whitespace | Zen, focus, core concepts |
Type composition details: [references/types.md](references/types.md)
## Palette Gallery
| Palette | Vibe | Primary Colors |
|---------|------|----------------|
| `warm` | Friendly, approachable | Orange, golden yellow, terracotta |
| `elegant` | Sophisticated, refined | Soft coral, muted teal, dusty rose |
| `cool` | Technical, professional | Engineering blue, navy, cyan |
| `dark` | Cinematic, premium | Electric purple, cyan, magenta |
| `earth` | Natural, organic | Forest green, sage, earth brown |
| `vivid` | Energetic, bold | Bright red, neon green, electric blue |
| `pastel` | Gentle, whimsical | Soft pink, mint, lavender |
| `mono` | Clean, focused | Black, near-black, white |
| `retro` | Nostalgic, vintage | Muted orange, dusty pink, maroon |
Palette definitions: [references/palettes/](references/palettes/)
## Rendering Gallery
| Rendering | Description | Key Characteristics |
|-----------|-------------|---------------------|
| `flat-vector` | Clean modern vector | Uniform outlines, flat fills, geometric icons |
| `hand-drawn` | Sketchy organic illustration | Imperfect strokes, paper texture, doodles |
| `painterly` | Soft watercolor/paint | Brush strokes, color bleeds, soft edges |
| `digital` | Polished modern digital | Precise edges, subtle gradients, UI components |
| `pixel` | Retro 8-bit pixel art | Pixel grid, dithering, chunky shapes |
| `chalk` | Chalk on blackboard | Chalk strokes, dust effects, board texture |
Rendering definitions: [references/renderings/](references/renderings/)
## Text & Mood
| Text Level | Title | Subtitle | Tags | Use Case |
|------------|:-----:|:--------:|:----:|----------|
| `none` | - | - | - | Pure visual, no text |
| `title-only` | ✓ | - | - | Simple headline (default) |
| `title-subtitle` | ✓ | ✓ | - | Title + supporting context |
| `text-rich` | ✓ | ✓ | ✓ (2-4) | Information-dense |
| Mood | Contrast | Saturation | Weight | Use Case |
|------|:--------:|:----------:|:------:|----------|
| `subtle` | Low | Muted | Light | Corporate, thought leadership |
| `balanced` | Medium | Normal | Medium | General articles (default) |
| `bold` | High | Vivid | Heavy | Announcements, promotions |
Full guides: [references/dimensions/text.md](references/dimensions/text.md) | [references/dimensions/mood.md](references/dimensions/mood.md)
## Style Presets & Compatibility
- **Style Presets**: `--style X` expands to palette + rendering. See [references/style-presets.md](references/style-presets.md)
- **Compatibility Matrices**: Palette×Rendering, Type×Rendering, Type×Text, Type×Mood. See [references/compatibility.md](references/compatibility.md)
- ✓✓ = highly recommended | ✓ = compatible | ✗ = not recommended
## File Structure
Output directory depends on `default_output_dir` preference:
| Preference | Output Path |
|------------|-------------|
| `same-dir` | `{article-dir}/` |
| `imgs-subdir` | `{article-dir}/imgs/` |
| `independent` (default) | `cover-image/{topic-slug}/` |
| Pasted content | `cover-image/{topic-slug}/` (always) |
```
<output-dir>/
├── source-{slug}.{ext} # Source files (text, images, etc.)
├── refs/ # Reference images (if provided)
│ ├── ref-01-{slug}.{ext}
│ ├── ref-01-{slug}.md # Description file (optional)
│ ├── ref-02-{slug}.{ext}
│ ├── ref-02-{slug}.md # Description file (optional)
│ └── extracted-style.md # Verbally extracted style (if no file path)
├── prompts/cover.md # Generation prompt
└── cover.png # Output image
```
**Slug**: Extract main topic (2-4 words, kebab-case). Example: "The Future of AI" → `future-of-ai`
**Conflict**: If directory exists, append timestamp: `{topic-slug}-YYYYMMDD-HHMMSS`
**Source Files**: Copy all sources with naming `source-{slug}.{ext}` (multiple supported)
## Workflow
### Progress Checklist
```
Cover Image Progress:
- [ ] Step 0: Check preferences (EXTEND.md) ⛔ BLOCKING
- [ ] Found → load preferences → continue
- [ ] Not found → run first-time setup → MUST complete before Step 1
- [ ] Step 1: Analyze content + determine output directory
- [ ] 1.1 Reference images ⚠️ (if provided)
- [ ] File path given → saved to refs/ ✓
- [ ] No path → asked user OR extracted verbally
- [ ] 1.2 Output directory determined
- [ ] Step 2: Confirm options (5 dimensions) ⚠️ REQUIRED unless --quick or all specified
- [ ] Step 3: Create prompt
- [ ] References in prompt ONLY if files exist in refs/
- [ ] Extracted style/palette appended to prompt body (if no file)
- [ ] Step 3.5: Confirm prompt with user ⛔ BLOCKING
- [ ] Step 4: Generate image
- [ ] 4.1 References verified before generation
- [ ] 4.2 Pass refs via --ref if skill supports AND files exist
- [ ] Step 5: Completion report
```
### Flow
```
Input → [Step 0: Preferences] ─┬─ Found → Continue
│
└─ Not found → First-Time Setup ⛔ BLOCKING
│
└─ Complete setup → Save EXTEND.md → Continue
│
┌───────────────────────────────────────────────────────────────────────────┘
↓
Analyze + Save Refs → [Output Dir ⚠️] → [Confirm: 5 Dimensions] → Prompt → Generate → Complete
↓
(skip if --quick or all specified)
```
### Step 0: Load Preferences (EXTEND.md) ⛔ BLOCKING
**Purpose**: Load user preferences or run first-time setup.
**CRITICAL**: If EXTEND.md not found, MUST complete first-time setup before ANY other questions or steps. Do NOT proceed to content analysis, do NOT ask about reference images, do NOT ask about dimensions — ONLY complete the preferences setup first.
Use Bash to check EXTEND.md existence (priority order):
```bash
# Check project-level first
test -f .baoyu-skills/baoyu-cover-image/EXTEND.md && echo "project"
# Then user-level (cross-platform: $HOME works on macOS/Linux/WSL)
test -f "$HOME/.baoyu-skills/baoyu-cover-image/EXTEND.md" && echo "user"
```
| Result | Action |
|--------|--------|
| Found | Read, parse, display preferences summary → Continue to Step 1 |
| Not found | ⛔ **BLOCKING**: Run first-time setup ONLY ([references/config/first-time-setup.md](references/config/first-time-setup.md)) → Complete and save EXTEND.md → Then continue to Step 1 |
**Preferences Summary** (when found):
```
Preferences loaded from [project/user]:
• Watermark: [enabled/disabled] [content if enabled]
• Type/Palette/Rendering: [value or "auto"]
• Text: [value or "title-only"] | Mood: [value or "balanced"]
• Aspect: [default_aspect] | Output: [dir or "not set — will ask in Step 1.5"]
• Quick mode: [enabled/disabled] | Language: [value or "auto"]
```
**EXTEND.md Supports**: Watermark | Preferred type | Preferred palette | Preferred rendering | Preferred text | Preferred mood | Default aspect ratio | Default output directory | Quick mode | Custom palette definitions | Language preference
Schema: [references/config/preferences-schema.md](references/config/preferences-schema.md)
### Step 1: Analyze Content
**1.0 Detect & Save Reference Images** ⚠️ REQUIRED if images provided
Check if user provided reference images. Handle based on input type:
| Input Type | Action |
|------------|--------|
| Image file path provided | Copy to `refs/` subdirectory → can use `--ref` |
| Image in conversation (no path) | **ASK user for file path** with AskUserQuestion |
| User can't provide path | Extract style/palette verbally → append to prompt (NO frontmatter references) |
**CRITICAL**: Only add `references` to prompt frontmatter if files are ACTUALLY SAVED to `refs/` directory.
**If user provides file path**:
1. Copy to `refs/ref-NN-{slug}.{ext}` (NN = 01, 02, ...)
2. Create description: `refs/ref-NN-{slug}.md`
3. Verify files exist before proceeding
**If user can't provide path** (extracted verbally):
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