feat(p1): complete P1 foundation stage

- monorepo: pnpm workspace + go.work + pyproject.toml + commitlint/husky
- infra: docker-compose (minimal + full profiles) + init-sql + prometheus
- arch-scan: multi-language scanner skeleton (TS/Go/Python/Proto)
- shared-proto: buf v2 + classes.proto (ClassService CRUD contract)
- api-gateway: Go/Gin + JWT HS256 auth + reverse proxy + request ID
- classes: NestJS golden template (error system + observability + middleware + CRUD + tests)
- teacher-portal: Next.js + paper-feel UI design system
- CI/CD: 4 workflows (go/ts/py/proto)
- docs: migration guide + project_rules + coding-standards + git-workflow + ui-design-system + 004 + 9 module READMEs + known-issues + spec/plan migration + roadmap

apps/teacher-portal/package.json

@@ -0,0 +1,26 @@
+{
+  "name": "@edu/teacher-portal",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "next dev -p 3000",
+    "build": "next build",
+    "start": "next start -p 3000",
+    "lint": "next lint",
+    "typecheck": "tsc --noEmit"
+  },
+  "dependencies": {
+    "next": "^14.2.0",
+    "react": "^18.3.0",
+    "react-dom": "^18.3.0"
+  },
+  "devDependencies": {
+    "@types/node": "^22.0.0",
+    "@types/react": "^18.3.0",
+    "@types/react-dom": "^18.3.0",
+    "autoprefixer": "^10.4.0",
+    "postcss": "^8.4.0",
+    "tailwindcss": "^3.4.0",
+    "typescript": "^5.6.0"
+  }
+}