# Icon & logo asset map

> The whole shipped icon set is sliced from **one master**. This file is the per-platform
> **target map** (which file goes where, at what size). How the mark itself is constructed
> — proportions, palette, wood grain, the light/shadow gradients, the «Э» + ✻ placement,
> all in fractions of the side — is specified in [`ICON_BRANDBOOK.md`](ICON_BRANDBOOK.md).
> The reference generator, the pinned Spectral font and the committed masters live in
> [`../assets/icons/brand/`](../assets/icons/brand/).

## The master (one source, six layers)

`brand/build-icon.mjs` emits any `--variant light|dark` in any `--layer`:

| Layer | What | Feeds |
|---|---|---|
| `full` | rounded tile + master mark | `favicon.svg` |
| `flat` | square tile + master mark (OS rounds) | apple-touch, PWA "any", VK, TG, store |
| `background` | square tile only, full-bleed | Android adaptive background |
| `foreground` | mark only, transparent, re-placed for the round mask | Android adaptive foreground |
| `maskable` | square tile + foreground-placed mark | PWA `maskable` |
| `monochrome` | foreground-placed silhouette, flat colour | Android 13+ themed layer |

`brand/build-set.mjs` renders every raster below; `brand/build-android-res.mjs` renders
the Android launcher resources.

## Generated targets

### Web — `ui/public/` (via `brand/build-set.mjs`)

| File | Size | Note |
|---|---|---|
| `favicon.svg` | vector | **light + dark in one file** via `prefers-color-scheme` |
| `favicon.ico` | 32×32 | PNG-in-ICO; answers the blind `/favicon.ico` probe |
| `apple-touch-icon.png` | 180×180 | opaque full-bleed (iOS masks its own corners) |
| `icon-192.png` / `icon-512.png` | 192 / 512 | PWA `any`, light |
| `icon-192-dark.png` / `icon-512-dark.png` | 192 / 512 | dark variants (generated; see PWA note) |
| `icon-maskable-512.png` | 512×512 | PWA `maskable`, light |
| `icon-maskable-512-dark.png` | 512×512 | dark variant (generated; see PWA note) |
| `og-image.png` | 1200×630 | board-green card: master tile + «Эрудит» / Игра в слова |

### PWA — `ui/public/manifest.webmanifest`

Referenced icons are the **light** set (`icon-192`, `icon-512` = `any`;
`icon-maskable-512` = `maskable`). The manifest has **no reliable way to pick an icon by
colour scheme**, so the dark PNGs are **generated but not referenced** — theming the
in-browser tab is handled by `favicon.svg` instead. Wire the dark files in only if a
concrete installer target is known to honour them.

### Android — `ui/android/app/src/main/res/` (via `brand/build-android-res.mjs`)

Capacitor layer inputs are `ui/assets/{icon,icon-foreground,icon-background}.png`. The
resources are **hand-generated from the layers**, not `capacitor-assets` — our layers
already fill the 108 dp canvas (foreground inside the 61 % safe zone, background
full-bleed), so they must be placed with **no inset**, and we add the **monochrome**
themed layer, neither of which `capacitor-assets` does. Per density mdpi→xxxhdpi (+ldpi):

- `mipmap-*/ic_launcher.png` — legacy square (< API 26): the **full-bleed master** (large
  mark), so old square launchers do not shrink it into the safe zone
- `mipmap-*/ic_launcher_round.png` — legacy round (< API 26): the safe-zone **composite**,
  circle-clipped (a round mask would clip the master's corner ✻)
- `mipmap-*/ic_launcher_foreground.png` + `ic_launcher_background.png` — adaptive layers
- `mipmap-*/ic_launcher_monochrome.png` — themed layer
- `mipmap-anydpi-v26/ic_launcher.xml` + `ic_launcher_round.xml` — **no `<inset>`**, with
  `<background>` + `<foreground>` + `<monochrome>` (committed by hand)

### iOS / iPhone / iPad — FUTURE

No iOS shell today. When one exists, `flat` (opaque, no alpha, no rounded corners; the OS
masks) drives the asset catalog — a single 1024×1024 marketing icon (Xcode derives the
rest), plus light/dark/tinted where the catalog supports it.

### VK / Telegram / store — manual upload (`brand/{vk,tg,store}/`)

Square, **no rounding** (each platform crops/rounds itself), light `flat`:

| Folder | Files | Use |
|---|---|---|
| `vk/` | `vk-576/278/150/32.png` | VK community / app icons |
| `tg/` | `tg-512.png` | Telegram bot avatar + Mini App icon (512, square; TG crops circular) |
| `tg/` | `tg-demo-640x360.png` | BotFather `/newapp` demo banner (tile + wordmark) |
| `store/` | `rustore-512.png` | RuStore app icon |
| RuStore | screenshots / feature graphic | per the RuStore listing spec (uploaded by hand) |
| Google Play (future) | icon / feature graphic | 512×512 / 1024×500 |
| App Store (future) | marketing icon / screenshots | 1024×1024 / per device class |

## Regenerate

```sh
cd assets/icons/brand
npm i                        # opentype.js (rasterisation reuses the ui package's chromium)
node build-set.mjs           # web (ui/public) + Capacitor layers (ui/assets) + vk/ tg/ store/ + og
node build-android-res.mjs   # Android launcher resources (all densities + monochrome)
```
