feat(baoyu-cover-image): add font dimension with 4 styles

Add 6th dimension for typography control:
- clean: modern geometric sans-serif
- handwritten: warm hand-lettered style
- serif: classic elegant typography
- display: bold decorative headlines

Includes auto-selection rules, compatibility matrix, and warm-flat preset.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

skills/baoyu-cover-image/references/workflow/confirm-options.md

@@ -2,22 +2,22 @@
 
 ## Purpose
 
-Validate all 5 dimensions + aspect ratio.
+Validate all 6 dimensions + aspect ratio.
 
 ## Skip Conditions
 
 | Condition | Skipped Questions | Still Asked |
 |-----------|-------------------|-------------|
-| `--quick` flag | Type, Palette, Rendering, Text, Mood | **Aspect Ratio** (unless `--aspect` specified) |
-| All 5 dimensions + `--aspect` specified | All | None |
-| `quick_mode: true` in EXTEND.md | Type, Palette, Rendering, Text, Mood | **Aspect Ratio** (unless `--aspect` specified) |
-| Otherwise | None | All 6 questions |
+| `--quick` flag | Type, Palette, Rendering, Text, Mood, Font | **Aspect Ratio** (unless `--aspect` specified) |
+| All 6 dimensions + `--aspect` specified | All | None |
+| `quick_mode: true` in EXTEND.md | Type, Palette, Rendering, Text, Mood, Font | **Aspect Ratio** (unless `--aspect` specified) |
+| Otherwise | None | All 7 questions |
 
 **Important**: Aspect ratio is ALWAYS asked unless explicitly specified via `--aspect` CLI flag. User presets in EXTEND.md are shown as recommended option, not auto-selected.
 
 ## Quick Mode Output
 
-When skipping 5 dimensions:
+When skipping 6 dimensions:
 
 ```
 Quick Mode: Auto-selected dimensions
@@ -26,8 +26,9 @@ Quick Mode: Auto-selected dimensions
 • Rendering: [rendering] ([reason])
 • Text: [text] ([reason])
 • Mood: [mood] ([reason])
+• Font: [font] ([reason])
 
-[Then ask Question 6: Aspect Ratio]
+[Then ask Question 7: Aspect Ratio]
 ```
 
 ## Confirmation Flow
@@ -91,7 +92,26 @@ options:
     description: "Polished, precise, subtle gradients"
 ```
 
-### Q4: Other Settings (skip if all remaining dimensions already specified)
+### Q4: Font (skip if `--font`)
+
+```yaml
+header: "Font"
+question: "Which font style?"
+multiSelect: false
+options:
+  - label: "[auto-recommended font] (Recommended)"
+    description: "[reason based on content signals]"
+  - label: "clean"
+    description: "Modern geometric sans-serif - tech, professional"
+  - label: "handwritten"
+    description: "Warm hand-lettered - personal, friendly"
+  - label: "serif"
+    description: "Classic elegant - editorial, luxury"
+  - label: "display"
+    description: "Bold decorative - announcements, entertainment"
+```
+
+### Q5: Other Settings (skip if all remaining dimensions already specified)
 
 Combine remaining settings into one question. Include: Output Dir (if no preference + file path input), Text, Mood, Aspect. Show auto-selected values as recommended option. User can accept all or type adjustments via "Other".
 

skills/baoyu-cover-image/references/workflow/prompt-template.md

@@ -26,6 +26,7 @@ Cover theme: [2-3 words visual interpretation]
 Type: [confirmed type]
 Palette: [confirmed palette]
 Rendering: [confirmed rendering]
+Font: [confirmed font]
 Text level: [confirmed text level]
 Mood: [confirmed mood]
 Aspect ratio: [confirmed ratio]
@@ -44,6 +45,13 @@ Language: [confirmed language]
 - balanced: "Use medium contrast, normal saturation, balanced visual weight"
 - bold: "Use high contrast, vivid saturated colors, heavy visual weight, dynamic energy"
 
+# Font Application
+[Based on font style:]
+- clean: "Use clean geometric sans-serif typography. Modern, minimal letterforms."
+- handwritten: "Use warm hand-lettered typography with organic brush strokes. Friendly, personal feel."
+- serif: "Use elegant serif typography with refined letterforms. Classic, editorial character."
+- display: "Use bold decorative display typography. Heavy, expressive headlines."
+
 # Composition
 Type composition:
 - [Type-specific layout and structure]