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>

services/api/cmd/storage-agent/main.go

@@ -0,0 +1,34 @@
+// Команда storage-agent — внутренний привилегированный сервис монтирования хранилищ.
+package main
+
+import (
+	"log/slog"
+	"net/http"
+	"os"
+	"time"
+
+	"pipu/api/internal/buildinfo"
+	"pipu/api/internal/platform/config"
+	"pipu/api/internal/platform/httpx"
+	"pipu/api/internal/storageagent"
+)
+
+func main() {
+	cfg, err := config.Load[config.StorageAgent]()
+	if err != nil {
+		slog.Error("storage-agent: config", "err", err)
+		os.Exit(1)
+	}
+	log := httpx.NewLogger(cfg.LogLevel)
+
+	srv := &http.Server{
+		Addr:              cfg.HTTPAddr,
+		Handler:           storageagent.NewRouter(cfg.InternalToken, cfg.LibraryRoot),
+		ReadHeaderTimeout: 10 * time.Second,
+	}
+	log.Info("listening", "addr", srv.Addr, "version", buildinfo.Version)
+	if err := srv.ListenAndServe(); err != nil {
+		log.Error("storage-agent stopped", "err", err)
+		os.Exit(1)
+	}
+}