docs: expand capsule identicon prototyper guidance (#8665)

Reviewed by CTO for PAP-12039. Documentation/catalog-only change with regenerated manifest; focused catalog verification, CI, security scans, and Greptile are green.

Co-Authored-By: Paperclip <noreply@paperclip.ing>
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@ -56,7 +56,7 @@ Use the **hero capsule bank** only for brand hero imagery, feature-video hero sc
Use **graphic-generator layouts** when the task asks for capsule graphics such as blend rows, chains, grids, icon marks, or hero compositions. Prefer seeded tools and exportable workflows; read `references/generator-workflows.md`.
Use **seeded identicons/profile pills** when an agent needs a reproducible personal capsule mark. Keep the seed/config with the output.
Use **seeded identicons/profile pills** when an agent needs a reproducible personal capsule mark. Read `references/identicon-prototyper.md` before choosing variants, color schemes, dither algorithms, density, sheen, aurora, mesh, motion, or exports.
## Implementation Workflow
@ -95,4 +95,5 @@ For code changes, include targeted checks that exercise the edited surface. For
- `references/individual-status-capsules.md` - product app capsules, heartbeat status capsules, palette caveats, and reduced-motion rules.
- `references/hero-capsule-bank.md` - canonical hero-bank geometry, palette, grain, wave, crop, and rendering checklist.
- `references/generator-workflows.md` - website generator, external graphic-generator, and seeded identicon/profile-pill workflows.
- `references/generator-workflows.md` - website generator and external graphic-generator workflows.
- `references/identicon-prototyper.md` - deterministic profile-pill variants, color schemes, dither algorithms, density behavior, motion, export/share controls, and recommended combinations.

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@ -21,7 +21,7 @@ The mirrored contract below was source-mined from the external prototype at comm
| Need | Preferred workflow |
| --- | --- |
| Canonical hero brand image | Hero capsule bank reference |
| One agent's profile mark | Seeded identicon/profile-pill prototype |
| One agent's profile mark | Seeded identicon/profile-pill prototype; read `identicon-prototyper.md` |
| Repeatable marketing motif | External graphic-generator with explicit seed |
| Quick public-doc example | Website embedded generator |
| Product UI state | Existing `AgentCapsule` and status helpers |
@ -88,40 +88,7 @@ Palette caution:
## Deterministic Identicon / Profile Pill
Use this when generating a reproducible capsule identity for one agent.
Determinism key:
```txt
seed + variant + density + theme
```
Variant families:
- Gradient: `Smooth`, `Soft Sheen`, `Mesh`, `Aurora`
- Dither: `Floyd-Steinberg`, `Atkinson`, `Jarvis-Judice-Ninke`, `Bayer 4x4`, `Bayer 8x8`, `Blue Noise`
Color spaces and themes:
- Color spaces: `hsl`, `oklch`
- Themes: `charcoal`, `paper`, `ink`
- Gradient angle can be seeded or manually overridden.
Export/share affordances:
- SVG
- PNG
- data URI
- React snippet
- standalone card view
- URL hash restore
- clipboard sharing
Smoke checks to perform when using the prototype:
- Same seed/config produces the same output.
- Changing the seed visibly changes the output.
- SVG or PNG export is non-empty and inspectable.
Use `identicon-prototyper.md` when generating a reproducible capsule identity for one agent. That reference carries the detailed variant ids, HSL/OKLCH color schemes, dither algorithms, density/tone behavior, motion, share/export controls, and recommended combinations from the PAP-11825 prototype.
## Artifact Record Template
@ -136,7 +103,9 @@ Capsule artifact
- Seed:
- Template / variant:
- Palette / theme:
- Color space / color scheme:
- Density / count / dimensions:
- Motion / gradient angle:
- Output: SVG | PNG | HTML | MP4 | WebM
- Divergence from canonical Paperclip rendering:
```

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@ -0,0 +1,213 @@
# Identicon Prototyper
Use this reference when generating or reviewing deterministic Paperclip capsule identicons/profile pills. Prototype source paths, when the Paperclip content repository is available:
- `paperclip-content/design/PAP-11825/paperclip-capsule-identicon-prototyper/README.md`
- `paperclip-content/design/PAP-11825/paperclip-capsule-identicon-prototyper/src/identicon.ts`
- `paperclip-content/design/PAP-11825/paperclip-capsule-identicon-prototyper/src/App.tsx`
These are individual agent marks. They do not replace product UI status capsules or the canonical hero capsule bank.
## Determinism Contract
The renderer scopes deterministic output by:
```txt
normalized seed + variant + density + theme
```
Additional options such as color space, color scheme, motion, and manual angle affect the rendered SVG and must still be recorded for reproducibility.
Default app state:
- Seed: `paperclip capsule bank`
- Variant: `gradient-smooth`
- Size control: `48` in the UI; renderer often uses `512` for the primary preview and `256` for samples.
- Density: `56`
- Theme: `charcoal`
- Color space/scheme: `oklch` / `Golden`
- Angle: seeded auto angle unless manually set.
- Motion: on.
Geometry:
- SVG viewBox: `0 0 120 292`
- Capsule body: `x=18`, `y=16`, `w=84`, `h=248`, `rx=42`
- Output width is approximately `size * 0.43`; output height is `size`.
- Capsule SVG includes `data-capsule="individual"` and an agent-oriented aria label.
## Variants
Gradient variants use smooth color only, not dot or stripe patterns:
| Variant id | UI label | Use |
| --- | --- | --- |
| `gradient-smooth` | Smooth | Clean two-tone linear gradient. |
| `gradient-soft` | Sheen | Linear gradient plus a soft radial white highlight near the top. |
| `gradient-mesh` | Mesh | Base gradient plus overlapping seeded radial color blobs. |
| `gradient-aurora` | Aurora | Multi-stop diagonal ribbon using three hues plus a broad soft band. |
Dither variants quantize the gradient ramp and emit one SVG path per tone level:
| Variant id | UI label | Algorithm |
| --- | --- | --- |
| `dither-floyd` | Floyd | Floyd-Steinberg error diffusion; compact classic grain. |
| `dither-atkinson` | Atkinson | Atkinson error diffusion; crisp Mac-era contrast. |
| `dither-jjn` | JJN | Jarvis-Judice-Ninke wide-kernel diffusion; smoother photographic grain. |
| `dither-bayer4` | Bayer 4 | Ordered dithering with a 4x4 Bayer matrix. |
| `dither-bayer8` | Bayer 8 | Ordered dithering with a recursively built 8x8 Bayer matrix. |
| `dither-bluenoise` | Blue Noise | Hash-based void-and-cluster-style threshold mask; avoids visible grid structure. |
## Color Systems
Supported color spaces:
- `hsl`
- `oklch`
HSL color schemes:
- `Triadic`
- `Complement`
- `Analogous`
- `Mono`
- `Split`
- `Tetrad`
OKLCH color schemes:
- `Mono`
- `Triadic`
- `Golden`
- `Complement`
- `Analogous`
- `Split`
- `Tetrad`
- `Warm-Cool`
- `Vivid`
- `Pastel`
- `Cinema`
- `Sunset`
- `Earth`
Scheme behavior:
- HSL defaults to `Triadic`.
- OKLCH defaults to `Golden`.
- OKLCH `Pastel` lowers chroma and raises lightness.
- OKLCH `Earth` uses lower chroma.
- OKLCH `Vivid` uses higher chroma.
- OKLCH `Cinema`, `Sunset`, and `Earth` intentionally bias lightness/hue for more authored looks.
- Manual angle is `0..360`; auto angle is seeded and normally falls in a diagonal range.
## Density And Dither Behavior
UI density presets are `32`, `56`, and `80`, but the renderer accepts numeric density.
Dither tone levels:
- Density `< 45`: 2 tones
- Density `45..67`: 3 tones
- Density `>= 68`: 4 tones
Dither grid:
- Column count is clamped from roughly `size / 8`, with a minimum of `14` and maximum of `34`.
- Row count follows capsule height/cell width so the cells stay proportional.
- Error diffusion kernels:
- Floyd-Steinberg divisor `16`
- Atkinson divisor `8`
- Jarvis-Judice-Ninke divisor `48`
- Ordered dithers shift the target ramp by threshold before rounding to the nearest tone.
Use lower density for bolder two-tone marks, mid density for readable profile icons, and high density for richer dither studies. Avoid using dither algorithms for product status indicators; those are a different capsule family.
## Recommended Combinations
The prototype's study sections provide known-good pairings:
- Smooth gradient + OKLCH `Golden`
- Soft sheen + OKLCH `Sunset`
- Mesh gradient + OKLCH `Vivid`
- Aurora gradient + OKLCH `Cinema`
- Gradient mix + HSL `Triadic`
- Floyd-Steinberg + OKLCH `Golden`
- Atkinson + OKLCH `Sunset`
- JJN + OKLCH `Earth`
- Bayer 4 or Bayer 8 + HSL `Complement`
- Blue noise + OKLCH `Vivid`
- Dither mix + OKLCH `Cinema`
Use these combinations first when a prompt asks for sophisticated capsule marks. Explore other schemes only when the request is explicitly exploratory.
## Themes, Motion, And Randomization
Themes:
- `charcoal`: dark brand lab setting with parchment ink.
- `paper`: white/paper setting with black ink.
- `ink`: near-black setting with white ink.
Motion:
- Motion adds a subtle vertical SVG `animateTransform` translate wave: `0 -3; 0 3; 0 -3` over `4s`, repeating indefinitely.
- Turn motion off for static exports, grid previews, and reduced-motion contexts.
- Keyboard `Space` replays motion in the prototype.
Randomize behavior:
- Randomizes style, color space/scheme, gradient angle, density, motion, and seed.
- Keeps Size and Theme stable.
- Seed words include `atlas`, `budget`, `capsule`, `delta`, `forge`, `governance`, `hermes`, `ledger`, `signal`, and `thread`.
## Export And Share
Supported actions:
- Copy SVG
- Download SVG
- Download PNG
- Copy data URI
- Copy React snippet
- Share standalone card URL
- Restore settings from URL hash
URL hash fields:
- `s`: seed
- `v`: variant id
- `z`: UI size
- `d`: density
- `t`: theme
- `c`: color space
- `p`: color scheme
- `a`: manual angle, omitted for seeded auto angle
- `m`: motion, `1` or `0`
When attaching an identicon artifact, record at least:
```md
Capsule identicon
- Seed:
- Variant id:
- Theme:
- Color space / scheme:
- Density:
- Size / output dimensions:
- Motion:
- Angle: seeded auto | <degrees>
- Export: SVG | PNG | data URI | React snippet | card URL
- Source: PAP-11825 identicon prototyper
```
## Smoke Checks
Before treating an identicon artifact as complete:
- Same seed and settings produce the same SVG.
- Changing the seed changes the SVG.
- All selected variant ids render nonblank SVG.
- SVG and PNG exports are non-empty and inspectable.
- Shared URL hash restores the intended seed, variant, density, theme, color space, color scheme, angle, and motion.
- Motion can be turned off for static/reduced-motion delivery.

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@ -2,7 +2,7 @@
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@ -140,14 +140,14 @@
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@ -155,6 +155,12 @@
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