Add full offline Android Gradle Plugin dependency cache

tauri_app/docker/verify-offline-agp.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+# Validate bundled Android Gradle Plugin cache inside the Docker image.
+set -euo pipefail
+
+AGP_VERSION="${ANDROID_GRADLE_PLUGIN_VERSION:-8.11.0}"
+LOCAL_REPO="${ANDROID_AGP_LOCAL_REPO:-/opt/android-agp-maven}"
+BUNDLED_REPO="${ANDROID_AGP_BUNDLED_REPO:-/workspace/tauri_app/docker/offline-maven}"
+
+required=(
+  "${LOCAL_REPO}/com/android/tools/build/gradle/${AGP_VERSION}/gradle-${AGP_VERSION}.jar"
+  "${LOCAL_REPO}/com/android/tools/build/builder/${AGP_VERSION}/builder-${AGP_VERSION}.pom"
+  "${LOCAL_REPO}/com/android/tools/build/builder-model/${AGP_VERSION}/builder-model-${AGP_VERSION}.pom"
+  "${LOCAL_REPO}/com/android/tools/build/gradle-api/${AGP_VERSION}/gradle-api-${AGP_VERSION}.pom"
+)
+
+for file in "${required[@]}"; do
+  if [ ! -f "${file}" ]; then
+    echo "Неполный offline-кэш AGP, отсутствует: ${file}" >&2
+    exit 1
+  fi
+done
+
+echo "==> Offline AGP ${AGP_VERSION} validated in ${LOCAL_REPO}"
+
+if [ -d "${BUNDLED_REPO}" ]; then
+  rm -rf "${BUNDLED_REPO}"
+  echo "==> Удалён дубликат offline-кэша из ${BUNDLED_REPO} (экономия места в образе)"
+fi