feat: docker builds the web app, full-stack serving verified

Dockerfile

@@ -12,7 +12,8 @@ RUN npm ci
 
 COPY tsconfig.json vitest.config.ts ./
 COPY server ./server
-RUN npm run build:server && npm test
+COPY web ./web
+RUN npm run build:server && npm run build:web && npm test
 RUN npm prune --omit=dev
 
 # ---- runtime stage ----
@@ -23,6 +24,7 @@ WORKDIR /app
 COPY package.json package-lock.json ./
 COPY --from=build /app/node_modules ./node_modules
 COPY --from=build /app/server/dist ./server/dist
+COPY --from=build /app/web/dist ./web/dist
 
 ENV PORT=3000
 ENV DATA_DIR=/data

README.md

@@ -22,8 +22,9 @@ token and (optionally) your Subsonic server details in Settings.
 
 ```bash
 npm install
-npm test          # vitest
-npm run dev:server
+npm test          # vitest (server + web)
+npm run dev       # API on :3000 + Vite dev server on :5173 (proxied)
+npm run build     # server + web production build
 ```
 
 Spec: `docs/superpowers/specs/2026-08-29-record-shop-design.md`