feat: Implement local chat saving and history management using Zustand and AsyncStorage.

package-lock.json

@@ -11,6 +11,7 @@
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         "@babel/runtime": "^7.28.6",
         "@expo/vector-icons": "^15.0.3",
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         "@react-navigation/bottom-tabs": "^7.4.0",
         "@react-navigation/elements": "^2.6.3",
         "@react-navigation/native": "^7.1.8",
@@ -2797,6 +2798,18 @@
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@@ -8018,6 +8031,15 @@
         "url": "https://github.com/sponsors/ljharb"
       }
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@@ -9055,6 +9077,18 @@
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+      "license": "MIT",
+      "dependencies": {
+        "is-plain-obj": "^2.1.0"
+      },
+      "engines": {
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