Add custom server config and remember-me login.

Allow runtime API/Web/WebSocket URLs via DataStore, plus a remember-login
toggle that clears tokens when the app stops if it is off.

app/build.gradle

@@ -51,8 +51,8 @@ android {
         applicationId "ai.multicasual.app"
         minSdk 24
         targetSdk 36
-        versionCode 5
-        versionName "0.1.4"
+        versionCode 3
+        versionName "0.1.2"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
 
@@ -89,7 +89,7 @@ android {
             applicationId "ai.multicasual.app"
             resValue "string", "app_name", "Multi-Casual"
             manifestPlaceholders = [
-                    usesCleartextTraffic: "false",
+                    usesCleartextTraffic: "true",
                     deepLinkScheme: "multi-casual",
                     umengDeepLinkScheme: "um.${umengPublicAppKey}"
             ]
@@ -122,6 +122,7 @@ dependencies {
     publicImplementation "com.umeng.umsdk:common:9.9.2"
     publicImplementation "com.umeng.umsdk:asms:1.8.7.2"
     publicImplementation "com.posthog:posthog-android:3.47.0"
+    implementation "androidx.datastore:datastore-preferences:1.1.1"
     implementation platform("androidx.compose:compose-bom:2024.10.01")
     implementation "androidx.activity:activity-compose:1.9.3"
     implementation "androidx.compose.foundation:foundation"