diff --git a/.gitea/workflows/sync-google-drive.yml b/.gitea/workflows/sync-google-drive.yml
new file mode 100644
index 0000000..3e0d5aa
--- /dev/null
+++ b/.gitea/workflows/sync-google-drive.yml
@@ -0,0 +1,35 @@
+name: Sync changed files to Google Drive
+
+on:
+  push:
+    branches: [main]
+
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Upload changed files
+        env:
+          BEFORE: ${{ gitea.event.before }}
+          AFTER: ${{ gitea.event.after }}
+          GDRIVE_FOLDER_ID: ${{ vars.GDRIVE_FOLDER_ID }}
+          GDRIVE_SERVICE_ACCOUNT_JSON: ${{ secrets.GDRIVE_SERVICE_ACCOUNT_JSON }}
+        run: |
+          curl -fsSL https://rclone.org/install.sh | sudo bash
+          key=$(mktemp)
+          config=$(mktemp)
+          trap 'rm -f "$key" "$config"' EXIT
+          printf '%s' "$GDRIVE_SERVICE_ACCOUNT_JSON" > "$key"
+          printf '[gdrive]\ntype = drive\nscope = drive\nroot_folder_id = %s\nservice_account_file = %s\n' "$GDRIVE_FOLDER_ID" "$key" > "$config"
+          if test "${BEFORE//0/}"; then
+            git diff --name-only --diff-filter=ACMRT -z "$BEFORE" "$AFTER"
+          else
+            git ls-files -z
+          fi | while IFS= read -r -d '' file; do
+            case "$file" in build|build/*) continue ;; esac
+            rclone copyto --config "$config" "$file" "gdrive:$file"
+          done
diff --git a/.gitignore b/.gitignore
index 8ebf5e8..84c048a 100755
--- a/.gitignore
+++ b/.gitignore
@@ -1,20 +1 @@
-# Source-only repository: never commit generated outputs or external assets.
-/vendor/
-/private-assets/
 /build/
-/dist/
-/.cache/
-/reports/
-/docs/
-/assets/
-/data/
-/config/toolchain.lock.json
-**/__pycache__/
-*.md
-*.txt
-*.sha256
-*.apk
-*.so
-*.a
-*.ppu
-*.o