feat(portal-shell): implement portal-shell with apollo-router integration

M8: portal-shell unified frontend shell (Modular Monolith + micro-kernel).

- Apollo Client -> apollo-router (port 4010, RSC prefetch)

- 5 layouts: classic/focus/split/triple/canvas

- Registry + PluginLoader (dynamic import ssr:false)

- 3-layer props merge, Zustand PluginStore

- 4 widgets: grades/notification-bell/user-menu/class-selector

- config-service: new pluginConfig GraphQL resolver

- apollo-router: CORS + header propagation for portal-shell

- docker-compose.yml: portal-shell service block

apps/portal-shell/tsconfig.json

@@ -0,0 +1,33 @@
+{
+  "extends": "../../tsconfig.base.json",
+  "compilerOptions": {
+    "target": "ES2022",
+    "lib": ["DOM", "DOM.Iterable", "ES2022"],
+    "module": "ESNext",
+    "moduleResolution": "Bundler",
+    "jsx": "preserve",
+    "allowJs": true,
+    "noEmit": true,
+    "incremental": true,
+    "plugins": [
+      {
+        "name": "next"
+      }
+    ],
+    "paths": {
+      "@/*": ["./src/*"],
+      "@edu/hooks": ["../../packages/hooks/src/index.ts"],
+      "@edu/ui-components": ["../../packages/ui-components/src/index.ts"],
+      "@edu/ui-tokens": ["../../packages/ui-tokens/src/index.ts"]
+    },
+    "isolatedModules": true
+  },
+  "include": [
+    "next-env.d.ts",
+    "src/**/*",
+    ".next/types/**/*.ts"
+  ],
+  "exclude": [
+    "node_modules"
+  ]
+}