Baoyu Cover Image

Cover Image Generator

Generate elegant cover images for articles with 5-dimensional customization.

User Input Tools

When this skill prompts the user, follow this tool-selection rule (priority order):

1. Prefer built-in user-input tools exposed by the current agent runtime — e.g., AskUserQuestion, request_user_input, clarify, ask_user, or any equivalent. 2. Fallback: if no such tool exists, emit a numbered plain-text message and ask the user to reply with the chosen number/answer for each question. 3. Batching: if the tool supports multiple questions per call, combine all applicable questions into a single call; if only single-question, ask them one at a time in priority order.

Concrete AskUserQuestion references below are examples — substitute the local equivalent in other runtimes.

Image Generation Tools

When this skill needs to render an image, resolve the backend in this order:

1. Current-request override — if the user names a specific backend in the current message, use it. 2. Saved preference — if EXTEND.md sets preferred_image_backend to a backend available right now, use it. 3. Auto-select (when the preference is auto, unset, or the pinned backend isn't available): - If the current runtime exposes a native image tool (e.g., Codex imagegen, Hermes image_generate), use it. Runtime-native tools are preferred by default — agents that know their own tool inventory should surface the native one here. - Otherwise, if exactly one non-native backend is installed (e.g., baoyu-imagine), use it. - Otherwise (multiple non-native backends with no runtime-native tool), ask the user once — batch with any other initial questions. 4. If none are available, tell the user and ask how to proceed.

Setting preferred_image_backend: ask forces the step-3 prompt every run regardless of available backends. Users change the pinned backend via the ## Changing Preferences section below.

Prompt file requirement (hard): write each image's full, final prompt to a standalone file under prompts/ (naming: NN-{type}-[slug].md) BEFORE invoking any backend. The backend receives the prompt file (or its content); the file is the reproducibility record and lets you switch backends without regenerating prompts.

Concrete tool names (imagegen, image_generate, baoyu-imagine) above are examples — substitute the local equivalents under the same rule.

Confirmation Policy

Default behavior: confirm before generation.

Options

| Option | Description | |--------|-------------| | --type | hero, conceptual, typography, metaphor, scene, minimal | | --palette | warm, elegant, cool, dark, earth, vivid, pastel, mono, retro, duotone, macaron | | --rendering | flat-vector, hand-drawn, painterly, digital, pixel, chalk, screen-print | | --style | Preset shorthand (see Style Presets) | | --text | none, title-only, title-subtitle, text-rich | | --mood | subtle, balanced, bold | | --font | clean, handwritten, serif, display | | --aspect | 16:9 (default), 2.35:1, 4:3, 3:2, 1:1, 3:4 | | --lang | Title language (en, zh, ja, etc.) | | --no-title | Alias for --text none | | --quick | Skip confirmation, use auto-selection | | --ref | Reference images for style/composition guidance |

Five Dimensions

| Dimension | Values | Default | |-----------|--------|---------| | Type | hero, conceptual, typography, metaphor, scene, minimal | auto | | Palette | warm, elegant, cool, dark, earth, vivid, pastel, mono, retro, duotone, macaron | 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 |

Auto-selection rules: references/auto-selection.md

Galleries

Types: hero, conceptual, typography, metaphor, scene, minimal → Details: references/types.md

Palettes: warm, elegant, cool, dark, earth, vivid, pastel, mono, retro, duotone, macaron → Details: references/palettes/

Renderings: flat-vector, hand-drawn, painterly, digital, pixel, chalk, screen-print → Details: references/renderings/

Text Levels: none (pure visual) | title-only (default) | title-subtitle | text-rich (with tags) → Details: references/dimensions/text.md

Mood Levels: subtle (low contrast) | balanced (default) | bold (high contrast) → Details: references/dimensions/mood.md

Fonts: clean (sans-serif) | handwritten | serif | display (bold decorative) → Details: references/dimensions/font.md

File Structure

Output directory per default_output_dir preference:

/
├── source-{slug}.{ext}    # Source files
├── refs/                  # Reference images (if provided)
│   ├── ref-01-{slug}.{ext}
│   └── ref-01-{slug}.md   # Description file
├── prompts/cover.md       # Generation prompt
└── cover.png              # Output image

Cover Image Progress:
[ ] Step 0: Check preferences (EXTEND.md) ⛔ BLOCKING
[ ] Step 1: Analyze content + save refs + determine output dir
[ ] Step 2: Confirm options (6 dimensions) ⚠️ unless --quick
[ ] Step 3: Create prompt
[ ] Step 4: Generate image
[ ] Step 5: Completion report

Input → [Step 0: Preferences] ─┬─ Found → Continue
                               └─ Not found → First-Time Setup ⛔ BLOCKING → Save EXTEND.md → Continue
        ↓
Analyze + Save Refs → [Output Dir] → [Confirm: 6 Dimensions] → Prompt → Generate → Complete
                                              ↓
                                     (skip if --quick or all specified)

Cover Generated!
Topic: [topic]
Type: [type] | Palette: [palette] | Rendering: [rendering]
Text: [text] | Mood: [mood] | Font: [font] | Aspect: [ratio]
Title: [title or "visual only"]
Language: [lang] | Watermark: [enabled/disabled]
References: [N images or "extracted style" or "none"]
Location: [directory path]
Files:
✓ source-{slug}.{ext}
✓ prompts/cover.md
✓ cover.png

| Option | Description | |--------|-------------| | --type | hero, conceptual, typography, metaphor, scene, minimal | | --palette | warm, elegant, cool, dark, earth, vivid, pastel, mono, retro, duotone, macaron | | --rendering | flat-vector, hand-drawn, painterly, digital, pixel, chalk, screen-print | | --style | Preset shorthand (see Style Presets) | | --text | none, title-only, title-subtitle, text-rich | | --mood | subtle, balanced, bold | | --font | clean, handwritten, serif, display | | --aspect | 16:9 (default), 2.35:1, 4:3, 3:2, 1:1, 3:4 | | --lang | Title language (en, zh, ja, etc.) | | --no-title | Alias for --text none | | --quick | Skip confirmation, use auto-selection | | --ref | Reference images for style/composition guidance |