feat: M0 monorepo skeleton with services, clients, deploy and CI

- api/openapi.yaml: contract with /healthz, /readyz, /api/v1/server-info
- services/api (Go): api with oapi-codegen strict server, goose migrations,
  readiness checks for Postgres/Redis; storage-agent stub with internal token
- services/recommender (Python, uv): FastAPI health/readiness/internal status,
  `pipu-rec serve` and `pipu-rec analyze` entrypoints
- packages: generated api-client, core (server URL + server check),
  i18n (ru/en + dictionary check), design-tokens (CSS vars + TS from tokens.json)
- apps/web: Vite + React shell showing server status, language switch
- apps/mobile: Expo (SDK 53) Android app with server connect screen
- deploy: Dockerfiles, compose (prod + dev), nginx template, install/update scripts
- .gitea/workflows: ci.yml and tag-based release.yml (images, signed APK, release)
- scripts/version.mjs: version and Android versionCode from git tag
- tests/fixtures/music/generate.sh: synthetic test library via ffmpeg
- docs: versionCode formula, OpenAPI 3.0.3, dev instructions in README

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packages/design-tokens/scripts/build.mjs

@@ -0,0 +1,36 @@
+// Генерирует CSS-переменные (веб) и TS-объект (React Native) из tokens.json.
+import { mkdirSync, readFileSync, writeFileSync } from 'node:fs';
+import { dirname, join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const root = join(dirname(fileURLToPath(import.meta.url)), '..');
+const t = JSON.parse(readFileSync(join(root, 'tokens.json'), 'utf8'));
+const out = join(root, 'src', 'generated');
+mkdirSync(out, { recursive: true });
+
+const vars = (theme) =>
+  Object.entries({ ...t.color[theme], ...t.effect[theme] })
+    .map(([k, v]) => `  --${k}: ${v};`)
+    .join('\n');
+const common = [
+  ...Object.entries(t.radius).map(([k, v]) => `  --radius-${k}: ${v}px;`),
+  ...Object.entries(t.wave).map(([k, v]) => `  --wave-${k}: ${v};`),
+  `  --font-display: '${t.font.display}', system-ui, sans-serif;`,
+  `  --font-body: '${t.font.body}', system-ui, sans-serif;`,
+  `  --font-mono: '${t.font.mono}', ui-monospace, monospace;`,
+].join('\n');
+
+const header = '/* Сгенерировано scripts/build.mjs из tokens.json — не редактировать. */\n';
+const css = `${header}:root {\n${common}\n${vars('dark')}\n}\n
+@media (prefers-color-scheme: light) {\n  :root:not([data-theme='dark']) {\n${vars('light').replace(/^/gm, '  ')}\n  }\n}\n
+:root[data-theme='light'] {\n${vars('light')}\n}\n
+:root[data-theme='dark'] {\n${vars('dark')}\n}\n`;
+writeFileSync(join(out, 'tokens.css'), css);
+
+const ts = `${header}export const tokens = ${JSON.stringify(
+  { color: t.color, effect: t.effect, wave: t.wave, radius: t.radius, font: t.font },
+  null,
+  2,
+)} as const;\n`;
+writeFileSync(join(out, 'tokens.ts'), ts);
+console.log('design-tokens: generated tokens.css, tokens.ts');