feat: APK distribution pipeline — server hosting + Pi auto-update + /app routes

app.py

@@ -48,6 +48,24 @@ def settings():
 def status_page():
     return render_template('status.html', account=account, car=car)
 
+# ── Android app download (served on the car hotspot) ─────────────────────
+# The APK is mirrored here from the remote server by deploy/yaris_app_updater.py
+# so the phone can install/update over WiFi without leaving the hotspot.
+APP_APK_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'static', 'app', 'yaris-obd.apk')
+
+@app.route('/app')
+def app_download_page():
+    apk_exists = os.path.isfile(APP_APK_PATH)
+    apk_size = os.path.getsize(APP_APK_PATH) if apk_exists else 0
+    return render_template('app.html', apk_exists=apk_exists, apk_size=apk_size)
+
+@app.route('/app/yaris-obd.apk')
+def app_download_apk():
+    if not os.path.isfile(APP_APK_PATH):
+        return "APK not downloaded yet — try again once the Pi has internet.", 404
+    return send_file(APP_APK_PATH, as_attachment=True, download_name='yaris-obd.apk',
+                     mimetype='application/vnd.android.package-archive')
+
 @app.route('/api/settings', methods=['GET', 'POST'])
 def api_settings():
     if request.method == 'GET':