feat(baoyu-cover-image): add screen-print rendering and duotone palette

Add screen-print as 7th rendering style with halftone textures and limited
colors. Add duotone as 10th color palette for dramatic two-color compositions.
Update all compatibility matrices and style presets (poster-art, mondo,
art-deco, propaganda, cinematic).

skills/baoyu-cover-image/SKILL.md

@@ -1,6 +1,6 @@
 ---
 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".
+description: Generates article cover images with 5 dimensions (type, palette, rendering, text, mood) combining 10 color palettes and 7 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
@@ -35,8 +35,8 @@ Generate elegant cover images for articles with 5-dimensional customization.
 | Option | Description |
 |--------|-------------|
 | `--type <name>` | hero, conceptual, typography, metaphor, scene, minimal |
-| `--palette <name>` | warm, elegant, cool, dark, earth, vivid, pastel, mono, retro |
+| `--palette <name>` | warm, elegant, cool, dark, earth, vivid, pastel, mono, retro, duotone |
-| `--rendering <name>` | flat-vector, hand-drawn, painterly, digital, pixel, chalk |
+| `--rendering <name>` | flat-vector, hand-drawn, painterly, digital, pixel, chalk, screen-print |
 | `--style <name>` | Preset shorthand (see [Style Presets](references/style-presets.md)) |
 | `--text <level>` | none, title-only, title-subtitle, text-rich |
 | `--mood <level>` | subtle, balanced, bold |
@@ -52,8 +52,8 @@ Generate elegant cover images for articles with 5-dimensional customization.
 | Dimension | Values | Default |
 |-----------|--------|---------|
 | **Type** | hero, conceptual, typography, metaphor, scene, minimal | auto |
-| **Palette** | warm, elegant, cool, dark, earth, vivid, pastel, mono, retro | auto |
+| **Palette** | warm, elegant, cool, dark, earth, vivid, pastel, mono, retro, duotone | auto |
-| **Rendering** | flat-vector, hand-drawn, painterly, digital, pixel, chalk | auto |
+| **Rendering** | flat-vector, hand-drawn, painterly, digital, pixel, chalk, screen-print | auto |
 | **Text** | none, title-only, title-subtitle, text-rich | title-only |
 | **Mood** | subtle, balanced, bold | balanced |
 | **Font** | clean, handwritten, serif, display | clean |
@@ -65,10 +65,10 @@ Auto-selection rules: [references/auto-selection.md](references/auto-selection.m
 **Types**: hero, conceptual, typography, metaphor, scene, minimal
 → Details: [references/types.md](references/types.md)
 
-**Palettes**: warm, elegant, cool, dark, earth, vivid, pastel, mono, retro
+**Palettes**: warm, elegant, cool, dark, earth, vivid, pastel, mono, retro, duotone
 → Details: [references/palettes/](references/palettes/)
 
-**Renderings**: flat-vector, hand-drawn, painterly, digital, pixel, chalk
+**Renderings**: flat-vector, hand-drawn, painterly, digital, pixel, chalk, screen-print
 → Details: [references/renderings/](references/renderings/)
 
 **Text Levels**: none (pure visual) | title-only (default) | title-subtitle | text-rich (with tags)

skills/baoyu-cover-image/references/auto-selection.md

@@ -26,6 +26,7 @@ When a dimension is omitted, select based on content signals.
 | Fantasy, children, gentle, creative, whimsical | `pastel` |
 | Zen, focus, essential, pure, simple | `mono` |
 | History, vintage, retro, classic, exploration | `retro` |
+| Movie poster, album cover, concert, cinematic, dramatic, two-color | `duotone` |
 
 ## Auto Rendering Selection
 
@@ -37,6 +38,7 @@ When a dimension is omitted, select based on content signals.
 | Data, dashboard, SaaS, corporate, polished | `digital` |
 | Gaming, retro, 8-bit, nostalgic | `pixel` |
 | Education, tutorial, classroom, teaching | `chalk` |
+| Poster, movie, album, concert, silhouette, mondo, limited-edition | `screen-print` |
 
 ## Auto Text Selection
 

skills/baoyu-cover-image/references/compatibility.md

@@ -4,28 +4,29 @@
 
 ## Palette × Rendering
 
-| | flat-vector | hand-drawn | painterly | digital | pixel | chalk |
+| | flat-vector | hand-drawn | painterly | digital | pixel | chalk | screen-print |
-|---|:---:|:---:|:---:|:---:|:---:|:---:|
+|---|:---:|:---:|:---:|:---:|:---:|:---:|:---:|
-| warm | ✓✓ | ✓✓ | ✓ | ✓ | ✓ | ✓ |
+| warm | ✓✓ | ✓✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
-| elegant | ✓ | ✓✓ | ✓ | ✓✓ | ✗ | ✗ |
+| elegant | ✓ | ✓✓ | ✓ | ✓✓ | ✗ | ✗ | ✓ |
-| cool | ✓✓ | ✓ | ✗ | ✓✓ | ✓ | ✓ |
+| cool | ✓✓ | ✓ | ✗ | ✓✓ | ✓ | ✓ | ✓ |
-| dark | ✓ | ✓ | ✓ | ✓✓ | ✓ | ✓✓ |
+| dark | ✓ | ✓ | ✓ | ✓✓ | ✓ | ✓✓ | ✓✓ |
-| earth | ✓ | ✓✓ | ✓✓ | ✓ | ✗ | ✗ |
+| earth | ✓ | ✓✓ | ✓✓ | ✓ | ✗ | ✗ | ✓ |
-| vivid | ✓✓ | ✓ | ✓ | ✓ | ✓✓ | ✓ |
+| vivid | ✓✓ | ✓ | ✓ | ✓ | ✓✓ | ✓ | ✓✓ |
-| pastel | ✓✓ | ✓✓ | ✓✓ | ✓ | ✗ | ✗ |
+| pastel | ✓✓ | ✓✓ | ✓✓ | ✓ | ✗ | ✗ | ✗ |
-| mono | ✓✓ | ✓ | ✗ | ✓✓ | ✓ | ✓ |
+| mono | ✓✓ | ✓ | ✗ | ✓✓ | ✓ | ✓ | ✓✓ |
-| retro | ✓✓ | ✓✓ | ✓ | ✓✓ | ✓ | ✗ |
+| retro | ✓✓ | ✓✓ | ✓ | ✓✓ | ✓ | ✗ | ✓✓ |
+| duotone | ✓ | ✗ | ✗ | ✓ | ✗ | ✗ | ✓✓ |
 
 ## Type × Rendering
 
-| | flat-vector | hand-drawn | painterly | digital | pixel | chalk |
+| | flat-vector | hand-drawn | painterly | digital | pixel | chalk | screen-print |
-|---|:---:|:---:|:---:|:---:|:---:|:---:|
+|---|:---:|:---:|:---:|:---:|:---:|:---:|:---:|
-| hero | ✓ | ✓✓ | ✓✓ | ✓✓ | ✓ | ✓ |
+| hero | ✓ | ✓✓ | ✓✓ | ✓✓ | ✓ | ✓ | ✓✓ |
-| conceptual | ✓✓ | ✓ | ✗ | ✓✓ | ✓ | ✓ |
+| conceptual | ✓✓ | ✓ | ✗ | ✓✓ | ✓ | ✓ | ✓ |
-| typography | ✓✓ | ✓ | ✓ | ✓✓ | ✓ | ✓ |
+| typography | ✓✓ | ✓ | ✓ | ✓✓ | ✓ | ✓ | ✓✓ |
-| metaphor | ✓ | ✓✓ | ✓✓ | ✓ | ✗ | ✓ |
+| metaphor | ✓ | ✓✓ | ✓✓ | ✓ | ✗ | ✓ | ✓✓ |
-| scene | ✗ | ✓ | ✓✓ | ✓ | ✓ | ✗ |
+| scene | ✗ | ✓ | ✓✓ | ✓ | ✓ | ✗ | ✓ |
-| minimal | ✓✓ | ✓ | ✓ | ✓✓ | ✗ | ✗ |
+| minimal | ✓✓ | ✓ | ✓ | ✓✓ | ✗ | ✗ | ✓✓ |
 
 ## Type × Text
 
@@ -51,9 +52,9 @@
 
 ## Font × Rendering
 
-| | flat-vector | hand-drawn | painterly | digital | pixel | chalk |
+| | flat-vector | hand-drawn | painterly | digital | pixel | chalk | screen-print |
-|---|:---:|:---:|:---:|:---:|:---:|:---:|
+|---|:---:|:---:|:---:|:---:|:---:|:---:|:---:|
-| clean | ✓✓ | ✗ | ✗ | ✓✓ | ✓ | ✗ |
+| clean | ✓✓ | ✗ | ✗ | ✓✓ | ✓ | ✗ | ✓ |
-| handwritten | ✓ | ✓✓ | ✓✓ | ✓ | ✗ | ✓✓ |
+| handwritten | ✓ | ✓✓ | ✓✓ | ✓ | ✗ | ✓✓ | ✗ |
-| serif | ✓ | ✗ | ✓ | ✓✓ | ✗ | ✗ |
+| serif | ✓ | ✗ | ✓ | ✓✓ | ✗ | ✗ | ✓ |
-| display | ✓✓ | ✓ | ✓ | ✓✓ | ✓✓ | ✓ |
+| display | ✓✓ | ✓ | ✓ | ✓✓ | ✓✓ | ✓ | ✓✓ |

skills/baoyu-cover-image/references/dimensions/font.md

@@ -120,12 +120,12 @@ Bold, decorative typography for maximum impact.
 
 ## Rendering Compatibility
 
-| Font × Rendering | flat-vector | hand-drawn | painterly | digital | pixel | chalk |
+| Font × Rendering | flat-vector | hand-drawn | painterly | digital | pixel | chalk | screen-print |
-|------------------|:-----------:|:----------:|:---------:|:-------:|:-----:|:-----:|
+|------------------|:-----------:|:----------:|:---------:|:-------:|:-----:|:-----:|:------------:|
-| clean | ✓✓ | ✗ | ✗ | ✓✓ | ✓ | ✗ |
+| clean | ✓✓ | ✗ | ✗ | ✓✓ | ✓ | ✗ | ✓ |
-| handwritten | ✓ | ✓✓ | ✓✓ | ✓ | ✗ | ✓✓ |
+| handwritten | ✓ | ✓✓ | ✓✓ | ✓ | ✗ | ✓✓ | ✗ |
-| serif | ✓ | ✗ | ✓ | ✓✓ | ✗ | ✗ |
+| serif | ✓ | ✗ | ✓ | ✓✓ | ✗ | ✗ | ✓ |
-| display | ✓✓ | ✓ | ✓ | ✓✓ | ✓✓ | ✓ |
+| display | ✓✓ | ✓ | ✓ | ✓✓ | ✓✓ | ✓ | ✓✓ |
 
 ✓✓ = highly recommended | ✓ = compatible | ✗ = not recommended
 
@@ -148,6 +148,7 @@ Font style adapts to palette characteristics:
 | Cool (cool, mono, elegant) | Perfect match | Contrast | Classic pairing | Bold statement |
 | Dark (dark, vivid) | High contrast | Glow effects | Dramatic | Maximum impact |
 | Vintage (retro) | Modern contrast | Nostalgic fit | Period-appropriate | Retro headlines |
+| Duotone (duotone) | Sharp contrast | Not recommended | Dramatic pairing | Cinematic impact |
 
 ## Auto Selection
 

skills/baoyu-cover-image/references/dimensions/mood.md

@@ -112,6 +112,7 @@ Mood modifies the base palette characteristics:
 | Cool palettes (cool, mono, elegant) | Lighter lines, muted colors | Standard colors | Stronger contrast, sharper definition |
 | Dark palettes (dark, vivid) | Reduced contrast, softer glow | Standard colors | Maximum impact, vivid saturation |
 | Vintage palettes (retro) | More faded, sepia-heavy | Standard colors | Bolder retro contrasts |
+| Duotone palettes (duotone) | Softer contrast between pair | Standard two-color split | Maximum contrast, stark separation |
 
 ## Rendering Interaction
 
@@ -125,6 +126,7 @@ Mood adjusts rendering characteristics:
 | digital | Reduced shadows, lower contrast | Standard rendering | Stronger shadows, sharper edges |
 | pixel | Fewer colors, simpler shapes | Standard palette | More colors, denser pixel detail |
 | chalk | Lighter chalk, more board showing | Standard chalk | Heavy chalk, vivid colors, dense marks |
+| screen-print | Fewer colors (2), lighter halftone | Standard 3-4 colors, medium halftone | More colors (4-5), dense halftone, stronger misregistration |
 
 ## Auto Selection
 

skills/baoyu-cover-image/references/palettes/duotone.md

@@ -0,0 +1,39 @@
+# duotone
+
+Dramatic, cinematic, two-color high contrast
+
+## Color Palette
+
+| Role | Color | Hex |
+|------|-------|-----|
+| Primary 1 | Burnt Orange | #E8751A |
+| Primary 2 | Deep Teal | #0A6E6E |
+| Background | Off-Black | #121212 |
+| Background Alt | Dark Charcoal | #1E1E1E |
+| Accent 1 | Warm Cream | #F5E6D0 |
+| Accent 2 | Amber Highlight | #F4A623 |
+
+## Duotone Pair Options
+
+Choose ONE pair based on content mood. The two colors dominate the entire image:
+
+| Pair | Color A | Color B | Feel |
+|------|---------|---------|------|
+| Orange + Teal | #E8751A | #0A6E6E | Cinematic, action |
+| Red + Cream | #C0392B | #F5E6D0 | Bold, classic |
+| Blue + Gold | #1A3A5C | #D4A843 | Prestigious, premium |
+| Purple + Green | #6B3FA0 | #2ECC71 | Futuristic, contrast |
+| Magenta + Cyan | #C2185B | #00BCD4 | Vibrant, pop |
+| Crimson + Navy | #DC143C | #0D1B2A | Dramatic, noir |
+
+## Decorative Hints
+
+- Stark two-color separation across entire composition
+- Halftone transitions between the two colors
+- Silhouettes in one color against the other
+- Minimal use of third color (only for small highlights)
+- High contrast figure-ground relationships
+
+## Best For
+
+Movie posters, album covers, concert prints, dramatic announcements, cinematic content, bold branding, editorial covers, artistic campaigns

skills/baoyu-cover-image/references/renderings/screen-print.md

@@ -0,0 +1,44 @@
+# screen-print
+
+Bold, limited-color poster art with print texture
+
+## Core Characteristics
+
+Screen print / silkscreen aesthetic with flat color blocks, halftone textures, and deliberate print imperfections. Think Mondo limited-edition posters, vintage concert prints, and alternative movie poster art.
+
+## Lines
+
+- Clean, sharp edges between color blocks
+- No outlines — shapes defined by color boundaries
+- Stencil-cut quality, bold silhouettes
+- Geometric shapes with precise registration
+
+## Texture
+
+- Halftone dot patterns within color fills
+- Slight color layer misregistration (offset between print layers)
+- Paper grain texture beneath colors
+- Risograph / screen print imperfections (ink spread, dot gain)
+
+## Depth
+
+- Flat color planes layered front to back
+- Depth through silhouette overlap and color layering
+- No gradients — tonal variation via halftone density
+- Negative space as active compositional element
+
+## Element Vocabulary
+
+- Bold silhouettes and symbolic shapes
+- Geometric framing (circles, arches, triangles)
+- Figure-ground inversion (negative space forms secondary image)
+- Limited icon vocabulary: key props, symbolic objects
+- Typography integrated as design element, not overlay
+- Vintage poster border treatments
+
+## Typography Approach
+
+- Bold condensed sans-serif or hand-drawn lettering
+- Art Deco influences, vintage poster typography
+- Typography as integral part of composition (not separate layer)
+- Strong readability through high contrast with background

skills/baoyu-cover-image/references/style-presets.md

@@ -24,6 +24,11 @@
 | `warm` | `warm` | `hand-drawn` |
 | `warm-flat` | `warm` | `flat-vector` |
 | `watercolor` | `earth` | `painterly` |
+| `poster-art` | `retro` | `screen-print` |
+| `mondo` | `mono` | `screen-print` |
+| `art-deco` | `elegant` | `screen-print` |
+| `propaganda` | `vivid` | `screen-print` |
+| `cinematic` | `duotone` | `screen-print` |
 
 ## Override Examples