v1.117.4 to v1.117.4

39 added, 115 removed. Audit B to B.

---

name: baoyu-comic

description: Knowledge comic creator supporting multiple art styles and tones. Creates original educational comics with detailed panel layouts and batch-capable image generation. Use when user asks to create "知识漫画", "教育漫画", "biography comic", "tutorial comic", or "Logicomix-style comic".

version: 1.117.4

metadata:

openclaw:

homepage: https://github.com/JimLiu/baoyu-skills#baoyu-comic

requires:

anyBins:

- bun

- npx

---

# Knowledge Comic Creator

- Create original knowledge comics with flexible art style × tone combinations.

## 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

Resolve the image backend in this order:

1. **User names a backend** in the current message → use it.

2. **`preferred_image_backend`** in `EXTEND.md` names a backend available now → use it. `ask` means ask every run.

3. **Auto-select** (preference `auto`, unset, or the pinned backend is unavailable), first match wins:

- **Codex `imagegen`** skill is in your available skills → you are in Codex and MUST use it: `Skill` with `skill: "imagegen"`, passing the prompt file's content plus output path and aspect ratio. It outranks non-native skills such as `baoyu-image-gen`.

- **Codex via `codex exec` (`codex-imagegen`)**: no native `imagegen`, but the `codex` CLI is on `PATH` with an active `codex login` → `baoyu-image-gen --provider codex-cli` (preferred), or the bundled wrapper if baoyu-image-gen is unavailable. Load [references/codex-imagegen.md](references/codex-imagegen.md) only for this branch.

- **Cursor `GenerateImage`** → use it (outranks non-native skills). It has no aspect-ratio parameter, so state the aspect ratio / dimensions in the `description` prompt; it saves to a tool-managed location, so copy the file to the expected output path (e.g., `outputs/.../NN-xxx.png`). Reference images go in `reference_image_paths`.

- **Other runtime-native image tool** (e.g., Hermes `image_generate`) → use it the same way.

- Exactly one non-native backend installed (e.g., `baoyu-image-gen`) → use it.

- Several non-native backends → ask the user once, batched with other initial questions.

4. **None available** → tell the user and ask how to proceed.

**⛔ Raster only**: never substitute SVG, HTML/CSS, canvas, or other code-based rendering for a raster image, even for diagram-like content. If no raster backend resolves, go to step 4.

**⛔ No bitmap text patching**: never use ImageMagick, Pillow, Canvas, SVG, HTML/CSS, OCR scripts, or any other overlay to cover, rewrite, erase, stroke, or replace dialogue, sound effects, panel labels, or any other text inside an already generated comic page. Regenerate from a corrected prompt, redraw the page with less or no on-image text, or ask the user which imperfect candidate to keep.

**Prompt file (hard)**: before invoking any backend, write each image's full, final prompt to its own file under `prompts/` (`NN-{type}-[slug].md`) and pass that file (or its content) to the backend. It is the reproducibility record and lets you switch backends without rewriting prompts.

Change the pinned backend via `## Changing Preferences` below. Tool names above are examples; use the local equivalent in other runtimes.

## Batch Generation Policy

- After every prompt file for the current generation group has been saved and verified, generate images in batches by default.

- Priority order:

+ After every prompt file for the current generation group is saved and verified, generate images in batches by default:

- 1. Use the chosen backend's native batch / multi-task interface if it exists. Each task must keep its own prompt file, output path, aspect ratio, session ID, and direct reference images.

- 2. If no native batch interface exists but the runtime can issue parallel tool calls, dispatch up to `generation_batch_size` images at a time. Default: `4`. An explicit user request in the current message, such as `--batch-size 4` or "并行4张一起生成", overrides EXTEND.md.

- 3. If neither native batch nor parallel tool calls are available, generate sequentially.

+ 1. Use the backend's native batch / multi-task interface if it exists. Each task keeps its own prompt file, output path, aspect ratio, session ID, and direct reference images.

+ 2. Else, if the runtime can issue parallel tool calls, dispatch up to `generation_batch_size` images at a time (default `4`). An explicit request in the current message (e.g. `--batch-size 4`, "并行4张一起生成") overrides EXTEND.md.

+ 3. Else generate sequentially.

Rules:

- - Honor workflow dependencies first: generate `characters/characters.png` before pages that use it as a reference.

+ - Honor dependencies: generate `characters/characters.png` before pages that use it as a reference.

- Never start the first page batch until all selected page prompt files exist on disk.

- Retry failed items once without regenerating successful items.

- - Do not use subagents merely to parallelize image rendering. Use subagents only for separate prompt iteration or creative exploration.

+ - Do not use subagents merely to parallelize image rendering; use them only for separate prompt iteration or creative exploration.

## Reference Images

- Users may supply reference images to guide art style, palette, scene composition, or subject. This is **separate from** the auto-generated character sheet (Step 7.1) — both can coexist: user refs guide the look, the character sheet anchors recurring character identity.

+ User-supplied reference images guide art style, palette, scene composition, or subject. They are **separate from** the auto-generated character sheet (Step 7.1); both can coexist — user refs guide the look, the character sheet anchors recurring character identity.

- **Intake**: Accept via `--ref <files...>` or when the user provides file paths / pastes images in conversation.

+ **Intake** via `--ref <files...>` or file paths / pasted images in conversation:

- File path(s) → copy to `refs/NN-ref-{slug}.{ext}` alongside the comic output

- - Pasted image with no path → ask the user for the path (per the User Input Tools rule above), or extract style traits verbally as a text fallback

+ - Pasted image with no path → ask for the path (per User Input Tools), or extract style traits verbally as a text fallback

- No reference → skip this section

**Usage modes** (per reference):

| Usage | Effect |

|-------|--------|

| `direct` | Pass the file to the backend as a reference image on every page (or selected pages) |

| `style` | Extract style traits (line treatment, texture, mood) and append to every page's prompt body |

| `palette` | Extract hex colors and append to every page's prompt body |

**Record in each page's prompt frontmatter** when refs exist:

```yaml

references:

- ref_id: 01

filename: 01-ref-scene.png

usage: direct

```

**At generation time**:

- Verify each referenced file exists on disk

- - If `usage: direct` AND the chosen backend accepts multiple reference images → pass both the character sheet (Step 7.2) and the user refs via the backend's ref parameter; compress images first per Step 7.1's guidance to avoid payload failures

- - If the backend accepts only one ref → prefer the character sheet for pages with recurring characters; embed user-ref traits in the prompt body instead

- - For `style`/`palette` usage → embed extracted traits in every page's prompt text (applies regardless of backend capability)

+ - `usage: direct` AND backend accepts multiple refs → pass both the character sheet (Step 7.2) and user refs via the backend's ref parameter; compress images first (Step 7.1) to avoid payload failures

+ - Backend accepts only one ref → prefer the character sheet for pages with recurring characters; embed user-ref traits in the prompt body

+ - `style`/`palette` → embed extracted traits in every page's prompt text regardless of backend

## Options

### Visual Dimensions

| Option | Values | Description |

|--------|--------|-------------|

| `--art` | ligne-claire (default), manga, realistic, ink-brush, chalk, minimalist | Art style / rendering technique |

| `--tone` | neutral (default), warm, dramatic, romantic, energetic, vintage, action | Mood / atmosphere |

| `--layout` | standard (default), cinematic, dense, splash, mixed, webtoon, four-panel | Panel arrangement |

| `--aspect` | 3:4 (default, portrait), 4:3 (landscape), 16:9 (widescreen) | Page aspect ratio |

| `--lang` | auto (default), zh, en, ja, etc. | Output language |

| `--ref <files...>` | File paths | Reference images applied to every page for style / palette / scene guidance. See [Reference Images](#reference-images) above. |

| `--batch-size <n>` | 1-8 | Temporary page generation batch size for this run. Default: `generation_batch_size` from EXTEND.md, otherwise 4. |

### Partial Workflow Options

| Option | Description |

|--------|-------------|

| `--storyboard-only` | Generate storyboard only, skip prompts and images |

| `--prompts-only` | Generate storyboard + prompts, skip images |

| `--images-only` | Generate images from existing prompts directory |

| `--regenerate N` | Regenerate specific page(s) only (e.g., `3` or `2,5,8`) |

Details: [references/partial-workflows.md](references/partial-workflows.md)

### Art, Tone & Preset Catalogue

- - **Art styles** (6): `ligne-claire`, `manga`, `realistic`, `ink-brush`, `chalk`, `minimalist`. Full definitions at `references/art-styles/<style>.md`.

- - **Tones** (7): `neutral`, `warm`, `dramatic`, `romantic`, `energetic`, `vintage`, `action`. Full definitions at `references/tones/<tone>.md`.

- - **Presets** (5) with special rules beyond plain art+tone:

+ - **Art styles** (6): `ligne-claire`, `manga`, `realistic`, `ink-brush`, `chalk`, `minimalist` → `references/art-styles/<style>.md`

+ - **Tones** (7): `neutral`, `warm`, `dramatic`, `romantic`, `energetic`, `vintage`, `action` → `references/tones/<tone>.md`

+ - **Layouts**: `references/layouts/<layout>.md`

+ - **Presets** (5), with special rules beyond plain art+tone — load `references/presets/<preset>.md` when a preset is picked:

| Preset | Equivalent | Hook |

|--------|-----------|------|

| `ohmsha` | manga + neutral | Visual metaphors, no talking heads, gadget reveals |

| `wuxia` | ink-brush + action | Qi effects, combat visuals, atmospheric |

| `shoujo` | manga + romantic | Decorative elements, eye details, romantic beats |

| `concept-story` | manga + warm | Visual symbol system, growth arc, dialogue+action balance |

| `four-panel` | minimalist + neutral + four-panel layout | 起承转合 structure, B&W + spot color, stick-figure characters |

- Full rules at `references/presets/<preset>.md` — load the file when a preset is picked.

- - **Compatibility matrix** and **content-signal → preset** table live in [references/auto-selection.md](references/auto-selection.md). Read it before recommending combinations in Step 2.

+ - **Compatibility matrix** and **content-signal → preset** table: [references/auto-selection.md](references/auto-selection.md). Read it before recommending combinations in Step 2.

## Script Directory

- **Important**: All scripts are located in the `scripts/` subdirectory of this skill.

+ Scripts live in this skill's `scripts/` subdirectory.

- **Agent Execution Instructions**:

- 1. Determine this SKILL.md file's directory path as `{baseDir}`

- 2. Script path = `{baseDir}/scripts/<script-name>.ts`

- 3. Replace all `{baseDir}` in this document with the actual path

- 4. Resolve `${BUN_X}` runtime: if `bun` installed → `bun`; if `npx` available → `npx -y bun`; else suggest installing bun

+ 1. Determine this SKILL.md file's directory path as `{baseDir}`; script path = `{baseDir}/scripts/<script-name>.ts`. Replace all `{baseDir}` in this document with the actual path

+ 2. Resolve `${BUN_X}` runtime: if `bun` installed → `bun`; if `npx` available → `npx -y bun`; else suggest installing bun

- **Script Reference**:

| Script | Purpose |

|--------|---------|

| `scripts/merge-to-pdf.ts` | Merge comic pages into PDF |

## File Structure

Output directory: `comic/{topic-slug}/`

- Slug: 2-4 words kebab-case from topic (e.g., `alan-turing-bio`)

- Conflict: append timestamp (e.g., `turing-story-20260118-143052`)

**Contents**:

| File | Description |

|------|-------------|

| `source-{slug}.{ext}` | Source files |

| `analysis.md` | Content analysis |

| `storyboard.md` | Storyboard with panel breakdown |

| `characters/characters.md` | Character definitions |

| `characters/characters.png` | Character reference sheet |

| `prompts/NN-{cover\|page}-[slug].md` | Generation prompts |

| `NN-{cover\|page}-[slug].png` | Generated images |

| `{topic-slug}.pdf` | Final merged PDF |

## Language Handling

- **Detection Priority**:

- 1. `--lang` flag (explicit)

- 2. EXTEND.md `language` setting

- 3. User's conversation language

- 4. Source content language

- **Rule**: Use user's input language or saved language preference for ALL interactions:

- - Storyboard outlines and scene descriptions

- - Image generation prompts

- - User selection options and confirmations

- - Progress updates, questions, errors, summaries

+ Detection priority: `--lang` flag → EXTEND.md `language` → user's conversation language → source content language.

- Technical terms remain in English.

+ Use that language for ALL interactions: storyboard outlines and scene descriptions, image prompts, selection options and confirmations, progress updates, questions, errors, summaries. Technical terms remain in English.

## Workflow

- ### Progress Checklist

+ Full step-by-step details (analysis, confirmation questions, storyboard, review gates, prompts, regeneration variants): [references/workflow.md](references/workflow.md).

```

Comic Progress:

- [ ] Step 1: Setup & Analyze

- [ ] 1.1 Preferences (EXTEND.md) ⛔ BLOCKING

- [ ] Found → load preferences → continue

- [ ] Not found → run first-time setup → MUST complete before other steps

- [ ] 1.2 Analyze, 1.3 Check existing

- [ ] Step 2: Confirmation - Style & options ⚠️ REQUIRED

- [ ] Step 3: Generate storyboard + characters

- [ ] Step 4: Review outline (conditional)

- [ ] Step 5: Generate prompts

- [ ] Step 6: Review prompts (conditional)

- [ ] Step 7: Generate images

- [ ] 7.1 Generate character sheet (if needed) → characters/characters.png

- [ ] 7.2 Generate pages (with --ref if character sheet exists)

- [ ] Step 8: Merge to PDF

- [ ] Step 9: Completion report

```

- ### Flow

- ```

- Input → [Preferences] ─┬─ Found → Continue

- │

- └─ Not found → First-Time Setup ⛔ BLOCKING

- │

- └─ Complete setup → Save EXTEND.md → Continue

- │

- ┌─────────────────────────────────────────────────────────────────────┘

- ↓

- Analyze → [Check Existing?] → [Confirm: Style + Reviews] → Storyboard → [Review?] → Prompts → [Review?] → Images → PDF → Complete

- ```

- ### Step Summary

- | Step | Action | Key Output |

- |------|--------|------------|

- | 1.1 | Load EXTEND.md preferences ⛔ BLOCKING if not found | Config loaded |

- | 1.2 | Analyze content | `analysis.md` |

- | 1.3 | Check existing directory | Handle conflicts |

- | 2 | Confirm style, focus, audience, reviews | User preferences |

- | 3 | Generate storyboard + characters | `storyboard.md`, `characters/` |

- | 4 | Review outline (if requested) | User approval |

- | 5 | Generate prompts | `prompts/*.md` |

- | 6 | Review prompts (if requested) | User approval |

- | 7.1 | Generate character sheet (if needed) | `characters/characters.png` |

- | 7.2 | Generate pages (with character ref if available) | `*.png` files |

- | 8 | Merge to PDF | `{slug}.pdf` |

- | 9 | Completion report | Summary |

+ - **Step 2 confirmation is required** — do not skip. Steps 4/6 run only if the user requested them in Step 2.

### Step 7: Image Generation

- **Pick a backend once per session** using the `## Image Generation Tools` rule at the top. If the backend is a repo skill (e.g., `baoyu-image-gen`), read its `SKILL.md` and use its documented interface rather than its scripts.

- **`codex-imagegen` invocation**: when the rule resolves to `codex-imagegen`, see [references/codex-imagegen.md](references/codex-imagegen.md) for the invocation contract (preferred `baoyu-image-gen --provider codex-cli` path, runtime wrapper discovery, parameter notes, stdout schema, batch semantics — n=1 per call so page batches must dispatch one wrapper call per page).

+ **Pick a backend once per session** using `## Image Generation Tools`. If the backend is a repo skill (e.g., `baoyu-image-gen`), read its `SKILL.md` and use its documented interface rather than its scripts. For `codex-imagegen`, see [references/codex-imagegen.md](references/codex-imagegen.md) (n=1 per call, so page batches dispatch one wrapper call per page).

- **7.1 Character sheet** — generate it (to `characters/characters.png`, aspect `4:3`) when the comic is multi-page with recurring characters. Skip for simple presets (e.g., four-panel minimalist) or single-page comics. Compress to JPEG before use-as-`--ref` (`sips -s format jpeg -s formatOptions 80 …` on macOS, `pngquant --quality=65-80 …` elsewhere) to avoid payload failures. The prompt file at `characters/characters.md` must exist before invoking the backend.

+ **7.1 Character sheet** — generate (to `characters/characters.png`, aspect `4:3`) when the comic is multi-page with recurring characters. Skip for simple presets (e.g., four-panel minimalist) or single-page comics. Compress to JPEG before using as `--ref` (`sips -s format jpeg -s formatOptions 80 …` on macOS, `pngquant --quality=65-80 …` elsewhere) to avoid payload failures. `characters/characters.md` must exist before invoking the backend.

- **7.2 Pages** — each page's prompt MUST already be at `prompts/NN-{cover|page}-[slug].md` before invoking the backend; the file is the reproducibility record. Strategy depends on the character sheet:

+ **7.2 Pages** — each page's prompt MUST already be at `prompts/NN-{cover|page}-[slug].md` before invoking the backend. Strategy depends on the character sheet:

| Character sheet | Backend `--ref` | Strategy |

|-----------------|-----------------|----------|

| Exists | Supported | Pass sheet as `--ref` on every page |

| Exists | Not supported | Prepend character descriptions to every prompt file |

| Skipped | — | All descriptions inline in prompt |

- **Execution strategy**: Generate the character sheet first when needed. Then build the selected page task list from saved prompt files and dispatch pages in batches per the `## Batch Generation Policy`: backend native batch first, runtime parallel tool calls second, sequential only as fallback. `--regenerate N` and `--images-only` apply the same batching rules to the selected existing prompts.

+ Build the page task list from saved prompt files and dispatch per `## Batch Generation Policy`. `--regenerate N` and `--images-only` apply the same batching rules to the selected existing prompts.

**Backup rule**: existing `prompts/…md` and `…png` files → rename with `-backup-YYYYMMDD-HHMMSS` suffix before regenerating. Aspect ratio from storyboard (default `3:4`; preset may override).

**`--ref` failure recovery**: compress sheet → retry → still fails → drop `--ref` and embed character descriptions in the prompt text.

- Full step-by-step workflow (analysis, storyboard, review gates, regeneration variants): [references/workflow.md](references/workflow.md).

### EXTEND.md Paths ⛔ BLOCKING

If EXTEND.md is not found, first-time setup is **blocking** — complete it before any content analysis or style/tone questions.

| Priority | Path | Scope |

|----------|------|-------|

| 1 | `.baoyu-skills/baoyu-comic/EXTEND.md` | Project |

| 2 | `$HOME/.baoyu-skills/baoyu-comic/EXTEND.md` | User home |

| Result | Action |

|--------|--------|

| Found | Read, parse, display summary → continue |

| Not found | ⛔ Run first-time setup ([references/config/first-time-setup.md](references/config/first-time-setup.md)) → save EXTEND.md → continue |

**EXTEND.md supports**: watermark, preferred art/tone/layout, custom style definitions, character presets, language preference, preferred image backend, generation batch size. Schema: [references/config/preferences-schema.md](references/config/preferences-schema.md).

- ## References

- **Core Templates**:

- - [analysis-framework.md](references/analysis-framework.md) - Deep content analysis

- - [character-template.md](references/character-template.md) - Character definition format

- - [storyboard-template.md](references/storyboard-template.md) - Storyboard structure

- - [ohmsha-guide.md](references/ohmsha-guide.md) - Ohmsha manga specifics

- **Style Definitions**:

- - `references/art-styles/` - Art styles (ligne-claire, manga, realistic, ink-brush, chalk, minimalist)

- - `references/tones/` - Tones (neutral, warm, dramatic, romantic, energetic, vintage, action)

- - `references/presets/` - Presets with special rules (ohmsha, wuxia, shoujo, concept-story, four-panel)

- - `references/layouts/` - Layouts (standard, cinematic, dense, splash, mixed, webtoon, four-panel)

- **Workflow**:

- - [workflow.md](references/workflow.md) - Full workflow details

- - [auto-selection.md](references/auto-selection.md) - Content signal analysis

- - [partial-workflows.md](references/partial-workflows.md) - Partial workflow options

+ ## Other References

- **Config**:

- - [config/preferences-schema.md](references/config/preferences-schema.md) - EXTEND.md schema

- - [config/first-time-setup.md](references/config/first-time-setup.md) - First-time setup

- - [config/watermark-guide.md](references/config/watermark-guide.md) - Watermark configuration

+ [analysis-framework.md](references/analysis-framework.md) (content analysis) · [storyboard-template.md](references/storyboard-template.md) · [character-template.md](references/character-template.md) · [ohmsha-guide.md](references/ohmsha-guide.md) · [config/watermark-guide.md](references/config/watermark-guide.md)

## Page Modification

| Action | Steps |

|--------|-------|

| **Edit** | **Update prompt file FIRST** → `--regenerate N` → Regenerate PDF |

- | **Add** | Create prompt at position → Generate with character ref → Renumber subsequent → Update storyboard → Regenerate PDF |

- | **Delete** | Remove files → Renumber subsequent → Update storyboard → Regenerate PDF |

+ | **Add** | Create prompt at position → Generate with character ref → Renumber subsequent (NN+1) → Update storyboard → Regenerate PDF |

+ | **Delete** | Remove files → Renumber subsequent (NN-1) → Update storyboard → Regenerate PDF |

- **IMPORTANT**: When updating pages, ALWAYS update the prompt file (`prompts/NN-{cover|page}-[slug].md`) FIRST before regenerating. This ensures changes are documented and reproducible.

+ Always update the prompt file (`prompts/NN-{cover|page}-[slug].md`) before regenerating, so changes stay documented and reproducible.

+ File naming: `NN-{cover|page}-[slug].png` (e.g., `03-page-enigma-machine.png`); slugs are kebab-case, unique, derived from content. Renumbering updates the NN prefix only; slugs unchanged.

Text correction policy:

- If dialogue, sound effects, panel labels, or any other rendered text is misspelled, garbled, hard to read, or visually weak, do not patch the bitmap with code.

- For text-correction regenerations, write a new prompt file and a new output path so the flawed candidate is preserved for comparison.

- Post-processing is limited to crop, resize, compression, or format conversion that does not alter text or the main composition.

## Notes

- - Image generation: 10-30 seconds per page

- - Auto-retry once on generation failure

- Use stylized alternatives for sensitive public figures

- Maintain style consistency via session ID

- - **Step 2 confirmation required** - do not skip

- - **Steps 4/6 conditional** - only if user requested in Step 2

- - **Step 7.1 character sheet** - recommended for multi-page comics, optional for simple presets

- - **Step 7.2 character reference** - use `--ref` if sheet exists; compress/convert on failure; fall back to prompt-only

- - Watermark/language configured once in EXTEND.md

+ - Watermark/language are configured once in EXTEND.md

## Changing Preferences

- EXTEND.md lives at `.baoyu-skills/baoyu-comic/EXTEND.md` (project) or `~/.baoyu-skills/baoyu-comic/EXTEND.md` (user). Three ways to change it:

+ EXTEND.md lives at `.baoyu-skills/baoyu-comic/EXTEND.md` (project) or `~/.baoyu-skills/baoyu-comic/EXTEND.md` (user). To change it:

- - **Edit directly** — open EXTEND.md and change fields. Full schema: `references/config/preferences-schema.md`.

- - **Reconfigure interactively** — delete EXTEND.md (or ask "reconfigure baoyu-comic preferences" / "重新配置"). The next run re-triggers first-time setup.

+ - **Edit directly** — full schema: `references/config/preferences-schema.md`.

+ - **Reconfigure interactively** — delete EXTEND.md (or ask "reconfigure baoyu-comic preferences" / "重新配置"); the next run re-triggers first-time setup.

- **Common one-line edits**:

- `preferred_image_backend: auto` — default; runtime-native tool wins, falls back to the only installed backend, asks only if multiple non-native are present.

- `preferred_image_backend: codex-imagegen` — pin to Codex's built-in.

- `preferred_image_backend: baoyu-image-gen` — pin to the baoyu-image-gen skill.

- `preferred_image_backend: ask` — confirm backend every run.

- `generation_batch_size: 4` — default number of page images to render concurrently when the backend/runtime supports batch or parallel generation.

- `watermark.enabled: true`, `preferred_art`, `preferred_tone`, `preferred_layout`, `language` — shift the auto-selection defaults and cosmetic choices.