refactor(web): migrate frontend to Tailwind CSS and Vike SSR

- Replace Mantine UI components with Tailwind CSS v4
- Migrate from static HTML to Vike-based SSR framework
- Disable SSR for game page (Emscripten requires browser environment)
- Simplify Emscripten loading to avoid hydration conflicts
- Remove Tailwind download logic from web.build.ts
- Add package manager lockfiles for reproducible builds
- Update .gitignore for node_modules and build artifacts

bun.lock

@@ -0,0 +1,17 @@
+{
+  "lockfileVersion": 1,
+  "workspaces": {
+    "": {
+      "name": "pacman",
+      "devDependencies": {
+        "@logtape/logtape": "^0.8.0",
+        "ts-pattern": "^5.5.0",
+      },
+    },
+  },
+  "packages": {
+    "@logtape/logtape": ["@logtape/logtape@0.8.2", "", {}, "sha512-KikaMHi64p0BHYrYOE2Lom4dOE3R8PGT+21QJ5Ql/SWy0CNOp69dkAlG9RXzENQ6PAMWtiU+4kelJYNvfUvHOQ=="],
+
+    "ts-pattern": ["ts-pattern@5.9.0", "", {}, "sha512-6s5V71mX8qBUmlgbrfL33xDUwO0fq48rxAu2LBE11WBeGdpCPOsXksQbZJHvHwhrd3QjUusd3mAOM5Gg0mFBLg=="],
+  }
+}