chore(docker): add local debug compose setup and scripts

Add docker-compose.debug.yml for local hot-reload debugging
Add docker:debug and docker:prod scripts to package.json
Update documentation and environment examples for debug usage
Update pnpm version in packageManager field

.env.example

@@ -20,6 +20,12 @@ RESEND_QUOTA_RESERVE=5
 RESEND_QUOTA_SNAPSHOT_TTL_MINUTES=10
 AI_MODERATION_API_KEY=
 
+# Local Docker debug defaults:
+# docker compose -f docker-compose.debug.yml up --build
+# NUXT_PUBLIC_API_BASE_URL=http://localhost:20016
+# NUXT_SERVER_API_BASE_URL=http://backend:3001
+# NUXT_PUBLIC_SITE_URL=http://localhost:20015
+
 # Cloudflared tunnel deployment example:
 # FRONTEND_ORIGIN=https://pokopiawiki.tootaio.com,http://localhost:20015
 # APP_ORIGIN=https://pokopiawiki.tootaio.com

DESIGN.md

@@ -1072,6 +1072,7 @@ API 暴露边界：
 - `frontend` 因 `docker compose up -d --build` 重建、启动中或临时不可达时，`frontend_gateway` 返回静态升级维护页并保持公开端口可访问；后端 `/health` 不可用时，前端网关也返回同一维护页，避免用户看到静态页面后遇到 API 不可用。
 - 升级维护页是基础设施级静态 fallback，不依赖 Vue、Vue I18n、后端 API 或数据库；页面只展示正式用户文案和品牌视觉，不展示构建日志、调试信息、内部字段或实现说明。
 - 升级维护页使用 `503`、`Retry-After: 300`、`Cache-Control: no-store` 和 `noindex`，提示用户 Pokopia Wiki 正在升级并将在约 5 分钟内恢复。
+- 本地 Docker 调试使用 `docker-compose.debug.yml`，通过 bind mount 运行 Nuxt dev server 与 backend `tsx watch`，支持前后端热重载；该调试入口不经过 `frontend_gateway` 维护页，不代表生产部署行为。
 
 ## API 概览
 
@@ -1198,3 +1199,4 @@ API 暴露边界：
   - `pnpm typecheck`
 - 不在 WSL 中运行测试作为完成任务的前置条件。
 - Docker 运行问题以用户提供的 `docker compose up --build` 输出为准进行后续修复。
+- 本地热重载调试可运行 `pnpm docker:debug` 或 `docker compose -f docker-compose.debug.yml up --build`；生产 SSR runtime 验证仍使用 `pnpm docker:prod` 或 `docker compose up --build`。

SSR_MIGRATION_TASKLIST.md

@@ -142,6 +142,7 @@ Keep this file aligned with implementation progress while the SSR migration is i
 - `frontend/Dockerfile` now runs `node .output/server/index.mjs` with `HOST=0.0.0.0` and `PORT=20015`; the obsolete lightweight static server file was removed.
 - `frontend_gateway` continues to proxy `frontend:20015` and keep the backend health-gated maintenance fallback independent from Nuxt.
 - `DESIGN.md` now documents the Nuxt server output deployment model and the existing browser API, server API, site URL, origin, and proxy environment variables.
+- `docker-compose.debug.yml` provides a separate local debug path that runs Nuxt dev server and backend `tsx watch` with bind-mounted source; default `docker compose up --build` remains the production SSR runtime validation path.
 - A local smoke check of `node frontend/.output/server/index.mjs` on port `20115` returned SSR HTML for `/` and `200` for `/robots.txt`; Docker compose runtime validation is still pending.
 
 ## Phase 8: Validation

docker-compose.debug.yml

@@ -0,0 +1,110 @@
+services:
+  postgres:
+    image: postgres:18-alpine
+    environment:
+      POSTGRES_DB: pokopia
+      POSTGRES_USER: pokopia
+      POSTGRES_PASSWORD: pokopia
+    volumes:
+      - postgres18_data:/var/lib/postgresql
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U pokopia -d pokopia"]
+      interval: 5s
+      timeout: 3s
+      retries: 10
+
+  deps:
+    image: node:22-alpine
+    working_dir: /app
+    environment:
+      PNPM_HOME: /pnpm
+    volumes:
+      - .:/app
+      - root_node_modules:/app/node_modules
+      - backend_node_modules:/app/backend/node_modules
+      - frontend_node_modules:/app/frontend/node_modules
+      - pnpm_store:/pnpm/store
+    command: >
+      sh -lc "corepack enable &&
+      corepack prepare pnpm@10.33.2 --activate &&
+      pnpm config set store-dir /pnpm/store &&
+      pnpm install --frozen-lockfile"
+
+  backend:
+    image: node:22-alpine
+    working_dir: /app
+    environment:
+      NODE_ENV: development
+      PNPM_HOME: /pnpm
+      DATABASE_URL: postgres://pokopia:pokopia@postgres:5432/pokopia
+      BACKEND_PORT: 3001
+      TRUST_PROXY: ${TRUST_PROXY:-false}
+      FRONTEND_ORIGIN: ${FRONTEND_ORIGIN:-http://localhost:20015}
+      APP_ORIGIN: ${APP_ORIGIN:-http://localhost:20015}
+      UPLOAD_DIR: /app/uploads
+      BACKEND_PUBLIC_ORIGIN: ${BACKEND_PUBLIC_ORIGIN:-http://localhost:20016}
+      RESEND_API_KEY: ${RESEND_API_KEY:-}
+      EMAIL_FROM: "${EMAIL_FROM:-Pokopia Wiki <onboarding@resend.dev>}"
+      RESEND_DAILY_QUOTA_LIMIT: ${RESEND_DAILY_QUOTA_LIMIT:-100}
+      RESEND_MONTHLY_QUOTA_LIMIT: ${RESEND_MONTHLY_QUOTA_LIMIT:-3000}
+      RESEND_QUOTA_RESERVE: ${RESEND_QUOTA_RESERVE:-5}
+      RESEND_QUOTA_SNAPSHOT_TTL_MINUTES: ${RESEND_QUOTA_SNAPSHOT_TTL_MINUTES:-10}
+      AI_MODERATION_API_KEY: ${AI_MODERATION_API_KEY:-}
+    ports:
+      - "20016:3001"
+    volumes:
+      - .:/app
+      - root_node_modules:/app/node_modules
+      - backend_node_modules:/app/backend/node_modules
+      - frontend_node_modules:/app/frontend/node_modules
+      - pnpm_store:/pnpm/store
+      - backend_uploads:/app/uploads
+    command: >
+      sh -lc "corepack enable &&
+      corepack prepare pnpm@10.33.2 --activate &&
+      pnpm --filter @pokopia/backend dev"
+    depends_on:
+      deps:
+        condition: service_completed_successfully
+      postgres:
+        condition: service_healthy
+
+  frontend:
+    image: node:22-alpine
+    working_dir: /app
+    environment:
+      NODE_ENV: development
+      PNPM_HOME: /pnpm
+      HOST: 0.0.0.0
+      PORT: 20015
+      CHOKIDAR_USEPOLLING: "true"
+      NUXT_PUBLIC_API_BASE_URL: ${NUXT_PUBLIC_API_BASE_URL:-http://localhost:20016}
+      NUXT_SERVER_API_BASE_URL: ${NUXT_SERVER_API_BASE_URL:-http://backend:3001}
+      NUXT_PUBLIC_SITE_URL: ${NUXT_PUBLIC_SITE_URL:-http://localhost:20015}
+      VITE_API_BASE_URL: ${VITE_API_BASE_URL:-http://localhost:20016}
+      VITE_SITE_URL: ${VITE_SITE_URL:-http://localhost:20015}
+    ports:
+      - "20015:20015"
+    volumes:
+      - .:/app
+      - root_node_modules:/app/node_modules
+      - backend_node_modules:/app/backend/node_modules
+      - frontend_node_modules:/app/frontend/node_modules
+      - pnpm_store:/pnpm/store
+    command: >
+      sh -lc "corepack enable &&
+      corepack prepare pnpm@10.33.2 --activate &&
+      pnpm --filter @pokopia/frontend dev"
+    depends_on:
+      deps:
+        condition: service_completed_successfully
+      backend:
+        condition: service_started
+
+volumes:
+  postgres18_data:
+  backend_uploads:
+  root_node_modules:
+  backend_node_modules:
+  frontend_node_modules:
+  pnpm_store:

package.json

@@ -2,13 +2,15 @@
   "name": "pokopia",
   "private": true,
   "type": "module",
-  "packageManager": "pnpm@10.33.2",
+  "packageManager": "pnpm@10.33.3+sha512.a19744364a7e248b92657a4ca5973f9354d21caf982579674b1c539f32c7420c47138ad8b1254df07aba9bc782d9b3029e3db34d5dbff974326eb74dac8ff489",
   "scripts": {
     "dev": "pnpm --parallel --filter @pokopia/backend --filter @pokopia/frontend dev",
     "lint": "pnpm -r lint",
     "typecheck": "pnpm -r typecheck",
     "test": "pnpm -r test",
-    "build": "pnpm -r build"
+    "build": "pnpm -r build",
+    "docker:debug": "docker compose -f docker-compose.debug.yml up --build",
+    "docker:prod": "docker compose up --build"
   },
   "engines": {
     "node": ">=22"