fix(mobile): fix app icon/splash rendering, prepare Play Store production build

Icon fix: android-icon-foreground/monochrome.png (and icon.png/
favicon.png/splash-icon.png) were the wide website wordmark logo
(paw + "PawFeed" text), with the actual paw glyph confined to a tiny
78x79px region on the far left of a 512x512 canvas. Android's adaptive
icon system only renders the center ~66% safe zone, so almost none of
the design was ever visible — explaining the "nearly all black" home
screen icon. Isolated the paw glyph via its orange pixel bounding box
and re-centered it properly on each target canvas (transparent for
foreground/monochrome/splash, solid background for icon.png/favicon).
monochrome.png is now a true white-alpha silhouette (Android's spec)
instead of sharp's tint() output, which produced gray instead of white.

Also removed android-icon-background.png — it was the same oversized
wordmark logo, redundant with (and overriding) the adaptiveIcon
backgroundColor that was already set to the same color.

Splash screen: expo-splash-screen was never installed despite
splash-icon.png existing in assets/ — app had no splash config at all,
which explains the light-gray placeholder/broken-image glyph seen on
launch (a generic fallback, not this app's own asset). Installed and
configured with the corrected splash-icon.png.

Play Store prep: added android.versionCode (required once
appVersionSource is "local" and unset until now) and made the
production build profile explicit about android.buildType: app-bundle
(required for Play Store; "preview" stays APK for direct install).

mobile/app.json

@@ -13,11 +13,11 @@
     },
     "android": {
       "package": "org.pawfeed.app",
+      "versionCode": 1,
       "googleServicesFile": "./google-services.json",
       "adaptiveIcon": {
         "backgroundColor": "#fafafa",
         "foregroundImage": "./assets/android-icon-foreground.png",
-        "backgroundImage": "./assets/android-icon-background.png",
         "monochromeImage": "./assets/android-icon-monochrome.png"
       },
       "predictiveBackGestureEnabled": false,
@@ -50,7 +50,16 @@
           "color": "#f97316"
         }
       ],
-      "expo-localization"
+      "expo-localization",
+      [
+        "expo-splash-screen",
+        {
+          "image": "./assets/splash-icon.png",
+          "imageWidth": 200,
+          "resizeMode": "contain",
+          "backgroundColor": "#fafafa"
+        }
+      ]
     ],
     "extra": {
       "router": {},

mobile/eas.json

@@ -17,6 +17,9 @@
       }
     },
     "production": {
+      "android": {
+        "buildType": "app-bundle"
+      },
       "env": {
         "EXPO_PUBLIC_API_URL": "https://pawfeed.org",
         "EXPO_PUBLIC_CLERK_PUBLISHABLE_KEY": "pk_live_Y2xlcmsucGF3ZmVlZC5vcmck",

mobile/package-lock.json

@@ -27,6 +27,7 @@
         "expo-notifications": "~57.0.17",
         "expo-router": "~57.0.19",
         "expo-secure-store": "~57.0.3",
+        "expo-splash-screen": "~57.0.8",
         "expo-status-bar": "~57.0.1",
         "expo-system-ui": "~57.0.3",
         "expo-video": "~57.0.3",
@@ -6454,6 +6455,20 @@
         "node": ">=20.16.0"
       }
     },
+    "node_modules/expo-splash-screen": {
+      "version": "57.0.8",
+      "resolved": "https://registry.npmjs.org/expo-splash-screen/-/expo-splash-screen-57.0.8.tgz",
+      "integrity": "sha512-BEsrKg4niYBZa5AFzWRyGqxA4ZemtBOPwbCy+C336iGYYPuZYLEgWJGmm2xD1gRfCdrM/TP+l2ONd86Zvk3KyA==",
+      "license": "MIT",
+      "dependencies": {
+        "@expo/config-plugins": "~57.0.9",
+        "@expo/image-utils": "^0.11.5",
+        "xml2js": "0.6.0"
+      },
+      "peerDependencies": {
+        "expo": "*"
+      }
+    },
     "node_modules/expo-status-bar": {
       "version": "57.0.1",
       "resolved": "https://registry.npmjs.org/expo-status-bar/-/expo-status-bar-57.0.1.tgz",

mobile/package.json

@@ -22,6 +22,7 @@
     "expo-notifications": "~57.0.17",
     "expo-router": "~57.0.19",
     "expo-secure-store": "~57.0.3",
+    "expo-splash-screen": "~57.0.8",
     "expo-status-bar": "~57.0.1",
     "expo-system-ui": "~57.0.3",
     "expo-video": "~57.0.3",