v0.1.8: tap a session for full detail + receipt

- Sessions list items are now tappable -> SessionDetailScreen.
- Past sessions fetch the full receipt (GET /api/ParkingReceipt): vehicle,
  start/end, time purchased, parking/fee/total, payment (MASTERCARD ••1234),
  auth code, meter, city, transaction id. Adds an "Email me this receipt" action.
- Active sessions show zone/space/start/ends/time-remaining.
- Confirm PastSession + ParkingReceipt types from a live DL-zone session (were
  UNCONFIRMED); fix past-session card to show Zone/Description, not blank.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/app.json

@@ -3,14 +3,14 @@
     "name": "BigBrainParking",
     "slug": "bigbrainparking",
     "scheme": "bigbrainparking",
-    "version": "0.1.7",
+    "version": "0.1.8",
     "orientation": "portrait",
     "userInterfaceStyle": "automatic",
     "newArchEnabled": true,
     "icon": "./assets/icon.png",
     "android": {
       "package": "top.mowden.bigbrainparking",
-      "versionCode": 7,
+      "versionCode": 8,
       "edgeToEdgeEnabled": true,
       "adaptiveIcon": {
         "foregroundImage": "./assets/adaptive-icon.png",