feat(fitness): add AI Smart Macro Logger using Gemini API

package-lock.json

@@ -8,6 +8,7 @@
       "name": "antigravity-app",
       "version": "0.1.0",
       "dependencies": {
+        "@google/generative-ai": "^0.24.1",
         "clsx": "^2.1.1",
         "framer-motion": "^12.35.0",
         "lucide-react": "^0.577.0",
@@ -459,6 +460,15 @@
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       }
     },
+    "node_modules/@google/generative-ai": {
+      "version": "0.24.1",
+      "resolved": "https://registry.npmjs.org/@google/generative-ai/-/generative-ai-0.24.1.tgz",
+      "integrity": "sha512-MqO+MLfM6kjxcKoy0p1wRzG3b4ZZXtPI+z2IE26UogS2Cm/XHO+7gGRBh6gcJsOiIVoH93UwKvW4HdgiOZCy9Q==",
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=18.0.0"
+      }
+    },
     "node_modules/@humanfs/core": {
       "version": "0.19.1",
       "resolved": "https://registry.npmjs.org/@humanfs/core/-/core-0.19.1.tgz",