chore: update versioning and launcher icons

- Incremented versionCode to 2 and versionName to 1.0.1 in build.gradle.kts for the new release.
- Updated the ic_launcher_background color in ic_launcher_colors.xml to better match the app's branding.
- Replaced multiple launcher icon assets across various resolutions to ensure consistency in the app's appearance.

mobile-app/composeApp/build.gradle.kts

@@ -58,8 +58,8 @@ android {
         applicationId = "de.tsschulz.tt_tagebuch"
         minSdk = libs.versions.android.minSdk.get().toInt()
         targetSdk = libs.versions.android.targetSdk.get().toInt()
-        versionCode = 1
-        versionName = "1.0.0"
+        versionCode = 2
+        versionName = "1.0.1"
         buildConfigField("String", "BACKEND_BASE_URL", "\"$backendBaseUrl\"")
         buildConfigField("String", "SOCKET_BASE_URL", "\"$socketBaseUrl\"")
     }

mobile-app/composeApp/src/androidMain/res/values/ic_launcher_colors.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <!-- Entspricht legacy Expo android.adaptiveIcon.backgroundColor -->
-    <color name="ic_launcher_background">#FFFFFF</color>
+    <!-- Näher am Web-Header (.app-header, Primärton ~rgb(24,70,54)) für adaptive Icons -->
+    <color name="ic_launcher_background">#184636</color>
 </resources>

mobile-app/scripts/refresh-android-launcher-icons.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+# Erzeugt Launcher-Icons aus dem Web-Header-Logo (frontend/src/assets/logo.png).
+# Aufruf von überall: bash mobile-app/scripts/refresh-android-launcher-icons.sh
+set -euo pipefail
+ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
+SRC="$ROOT/frontend/src/assets/logo.png"
+RES="$ROOT/mobile-app/composeApp/src/androidMain/res"
+if [[ ! -f "$SRC" ]]; then
+  echo "Fehlt: $SRC" >&2
+  exit 1
+fi
+mkdir -p "$RES/drawable-mdpi" "$RES/drawable-hdpi" "$RES/drawable-xhdpi" "$RES/drawable-xxhdpi" "$RES/drawable-xxxhdpi" \
+  "$RES/mipmap-mdpi" "$RES/mipmap-hdpi" "$RES/mipmap-xhdpi" "$RES/mipmap-xxhdpi" "$RES/mipmap-xxxhdpi"
+magick "$SRC" -resize 108x108!   -filter Lanczos "$RES/drawable-mdpi/ic_launcher_foreground.png"
+magick "$SRC" -resize 162x162!   -filter Lanczos "$RES/drawable-hdpi/ic_launcher_foreground.png"
+magick "$SRC" -resize 216x216!  -filter Lanczos "$RES/drawable-xhdpi/ic_launcher_foreground.png"
+magick "$SRC" -resize 324x324!  -filter Lanczos "$RES/drawable-xxhdpi/ic_launcher_foreground.png"
+magick "$SRC" -resize 432x432!  -filter Lanczos "$RES/drawable-xxxhdpi/ic_launcher_foreground.png"
+magick "$SRC" -resize 48x48!    -filter Lanczos "$RES/mipmap-mdpi/ic_launcher.png"
+magick "$SRC" -resize 72x72!    -filter Lanczos "$RES/mipmap-hdpi/ic_launcher.png"
+magick "$SRC" -resize 96x96!    -filter Lanczos "$RES/mipmap-xhdpi/ic_launcher.png"
+magick "$SRC" -resize 144x144!  -filter Lanczos "$RES/mipmap-xxhdpi/ic_launcher.png"
+magick "$SRC" -resize 192x192!  -filter Lanczos "$RES/mipmap-xxxhdpi/ic_launcher.png"
+for d in mipmap-mdpi mipmap-hdpi mipmap-xhdpi mipmap-xxhdpi mipmap-xxxhdpi; do
+  cp "$RES/$d/ic_launcher.png" "$RES/$d/ic_launcher_round.png"
+done
+echo "OK: Icons aus $SRC nach $RES"