feat(web): init project scaffold with package.json and tsconfig

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

web/client/tsconfig.json

@@ -0,0 +1,13 @@
+{
+  "extends": "../tsconfig.base.json",
+  "compilerOptions": {
+    "jsx": "react-jsx",
+    "outDir": "./dist",
+    "rootDir": "./src",
+    "baseUrl": ".",
+    "paths": {
+      "@/*": ["./src/*"]
+    }
+  },
+  "include": ["./src/**/*.ts", "./src/**/*.tsx"]
+}