feat: update Firebase hosting configuration with rewrites and headers

Signed-off-by: Claude Code Developer <dev@localhost>

Author: Claude Code Developer

firebase.json

@@ -1,13 +1,36 @@
 {
   "hosting": {
-    "source": ".",
+    "public": "dist",
     "ignore": [
       "firebase.json",
       "**/.*",
       "**/node_modules/**"
     ],
-    "frameworksBackend": {
-      "region": "us-east1"
-    }
+    "rewrites": [
+      {
+        "source": "**",
+        "destination": "/index.html"
+      }
+    ],
+    "headers": [
+      {
+        "source": "**/*.@(js|css|jpg|jpeg|gif|png|svg|webp|ico|woff|woff2|ttf|eot)",
+        "headers": [
+          {
+            "key": "Cache-Control",
+            "value": "max-age=31536000, immutable"
+          }
+        ]
+      },
+      {
+        "source": "index.html",
+        "headers": [
+          {
+            "key": "Cache-Control",
+            "value": "no-cache"
+          }
+        ]
+      }
+    ]
   }
 }