feat(config): enhance development experience with strict linting and types

- Update ESLint configuration with strict React/TypeScript rules
- Enhance TypeScript configuration with stricter checks
- Add comprehensive type definitions and exports
- Update App.tsx with new routing and layout integration
- Create showcase pages for component development
- Improve package.json with proper dependencies

Configuration ensures code quality and developer productivity with
zero-tolerance for type errors and consistent code standards.

🤖 Generated with [Claude Code](https://claude.ai/code)

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

reactrebuild0825/package-lock.json

@@ -45,6 +45,7 @@
         "prettier-plugin-tailwindcss": "^0.6.14",
         "tailwindcss": "^3.4.14",
         "typescript": "^5.6.3",
+        "typescript-eslint": "^8.39.1",
         "vite": "^6.0.1"
       }
     },
@@ -7158,6 +7159,30 @@
         "node": ">=14.17"
       }
     },
+    "node_modules/typescript-eslint": {
+      "version": "8.39.1",
+      "resolved": "https://registry.npmjs.org/typescript-eslint/-/typescript-eslint-8.39.1.tgz",
+      "integrity": "sha512-GDUv6/NDYngUlNvwaHM1RamYftxf782IyEDbdj3SeaIHHv8fNQVRC++fITT7kUJV/5rIA/tkoRSSskt6osEfqg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@typescript-eslint/eslint-plugin": "8.39.1",
+        "@typescript-eslint/parser": "8.39.1",
+        "@typescript-eslint/typescript-estree": "8.39.1",
+        "@typescript-eslint/utils": "8.39.1"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "eslint": "^8.57.0 || ^9.0.0",
+        "typescript": ">=4.8.4 <6.0.0"
+      }
+    },
     "node_modules/unbox-primitive": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/unbox-primitive/-/unbox-primitive-1.1.0.tgz",