v0.2.4: fix countdown notification not appearing + wrong time-remaining

Countdown notification "nothing appears" on session start:
- The small icon was the adaptive launcher mipmap (applicationInfo.icon),
  which Android 13+/GrapheneOS rejects as an invalid notification small icon
  and drops the post silently. Ship a proper white-on-transparent vector
  small icon (bbp_stat_parking) inside the module and use it.
- showCountdown now returns a diagnostic string (posted / notifications
  disabled / exception) instead of swallowing failures; JS logs the branch,
  permission result, and native outcome to the in-app diagnostics log.
- Log the raw active-session payload in refreshSessionStatus (element shape
  was previously unconfirmed).

Time remaining showed "7694 min":
- API's TimeRemaining is SECONDS, not minutes. Format it as hours+minutes
  in SessionDetail; annotate the type.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/modules/bbp-notify/android/src/main/java/expo/modules/bbpnotify/BbpNotifyModule.kt

@@ -21,14 +21,21 @@ class BbpNotifyModule : Module() {
   override fun definition() = ModuleDefinition {
     Name("BbpNotify")
 
+    // Returns a short diagnostic string so the JS layer can log exactly what
+    // happened (posted / notifications-disabled / exception). "Nothing appears"
+    // bugs are otherwise invisible because notify() fails silently.
     AsyncFunction("showCountdown") { title: String, body: String, endTimeMillis: Double ->
-      val ctx = appContext.reactContext ?: return@AsyncFunction
+      val ctx = appContext.reactContext
+        ?: return@AsyncFunction "no-context"
       ensureChannel(ctx)
 
+      val mgr = NotificationManagerCompat.from(ctx)
+      val enabled = mgr.areNotificationsEnabled()
+
       val builder = NotificationCompat.Builder(ctx, CHANNEL_ID)
         .setContentTitle(title)
         .setContentText(body)
-        .setSmallIcon(ctx.applicationInfo.icon)
+        .setSmallIcon(R.drawable.bbp_stat_parking)
         .setOngoing(true)
         .setOnlyAlertOnce(true)
         .setShowWhen(true)
@@ -52,10 +59,14 @@ class BbpNotifyModule : Module() {
         )
       }
 
-      try {
-        NotificationManagerCompat.from(ctx).notify(NOTIF_ID, builder.build())
-      } catch (_: SecurityException) {
-        // POST_NOTIFICATIONS not granted yet; caller requests it separately.
+      return@AsyncFunction try {
+        mgr.notify(NOTIF_ID, builder.build())
+        "posted enabled=$enabled sdk=${Build.VERSION.SDK_INT}"
+      } catch (e: SecurityException) {
+        // POST_NOTIFICATIONS not granted.
+        "security-exception enabled=$enabled msg=${e.message}"
+      } catch (e: Exception) {
+        "exception enabled=$enabled ${e.javaClass.simpleName}=${e.message}"
       }
     }
 

app/modules/bbp-notify/android/src/main/res/drawable/bbp_stat_parking.xml

@@ -0,0 +1,15 @@
+<!--
+  Notification small icon: a white-on-transparent timer glyph (Material "timer").
+  Small icons MUST be a simple monochrome drawable — the app launcher mipmap
+  (applicationInfo.icon) is an adaptive/full-colour icon and is dropped as an
+  invalid small icon on Android 13+/GrapheneOS, so we ship our own here.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M15,1L9,1L9,3L15,3L15,1ZM11,14L13,14L13,8L11,8L11,14ZM19.03,7.39L20.45,5.97C20.02,5.46 19.55,4.98 19.04,4.56L17.62,5.98C16.07,4.74 14.12,4 12,4C7.03,4 3,8.03 3,13C3,17.97 7.02,22 12,22C16.98,22 21,17.97 21,13C21,10.88 20.26,8.93 19.03,7.39ZM12,20C8.13,20 5,16.87 5,13C5,9.13 8.13,6 12,6C15.87,6 19,9.13 19,13C19,16.87 15.87,20 12,20Z" />
+</vector>