build: ship pre-built API bundle; images copy output instead of installing

- API: `pnpm build` bundles dist/ into apps/api/.output (esbuild), with
  Linux musl native packages for sharp and argon2 kept alongside
- docker/api.Dockerfile copies that output; no pnpm install on the server
- add dist/migrate.js (prisma migrate deploy equivalent, same
  _prisma_migrations table and lock) so the Prisma CLI is not needed at runtime
- pnpm-workspace: supportedArchitectures for linux/x64/musl
- admin: apps/admin/.env.production sets VITE_SITE_URL for the production build
- drop NPM_REGISTRY / SITE_URL build args from compose and .env.example
- gitignore: anchor node_modules rules so pre-built node_modules are committed
- README: describe the pre-built deploy flow

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

apps/web/.output/server/node_modules/@vueuse/shared/package.json

@@ -0,0 +1,45 @@
+{
+  "name": "@vueuse/shared",
+  "type": "module",
+  "version": "15.0.0",
+  "author": "Anthony Fu <https://github.com/antfu>",
+  "license": "MIT",
+  "funding": "https://github.com/sponsors/antfu",
+  "homepage": "https://github.com/vueuse/vueuse/tree/main/packages/shared#readme",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/vueuse/vueuse.git",
+    "directory": "packages/shared"
+  },
+  "bugs": {
+    "url": "https://github.com/vueuse/vueuse/issues"
+  },
+  "keywords": [
+    "vue",
+    "vue-use",
+    "utils"
+  ],
+  "sideEffects": false,
+  "exports": {
+    ".": "./dist/index.js",
+    "./*": "./dist/*",
+    "./package.json": "./package.json"
+  },
+  "main": "./dist/index.js",
+  "module": "./dist/index.js",
+  "unpkg": "./dist/index.iife.min.js",
+  "jsdelivr": "./dist/index.iife.min.js",
+  "types": "./dist/index.d.ts",
+  "files": [
+    "dist"
+  ],
+  "engines": {
+    "node": ">=22"
+  },
+  "peerDependencies": {
+    "vue": "^3.5.0"
+  },
+  "scripts": {
+    "build": "tsdown"
+  }
+}