v7: store-and-forward architecture

BREAKING: Complete rewrite of data flow to fix network isolation issue.

Problem: When connected to Bee's WiFi AP (192.168.0.10), the phone has
NO internet access. The Bee AP is just a direct connection to the dashcam
with no upstream gateway. The old design tried to simultaneously pull from
Bee and push to ADAMaps, which fundamentally couldn't work.

Solution: Store-and-forward with two independent subsystems:

1. BeeCollectorService - Collection only
   - Binds to unvalidated WiFi (Bee AP)
   - Polls Bee for detections
   - Stores to local Room database
   - Does NOT attempt internet uploads

2. AdaMapsUploadWorker - Upload only
   - WorkManager-based background worker
   - Only runs when device has VALIDATED internet
   - Reads from local DB, batch uploads to ADAMaps
   - Marks as synced, retries with backoff

New components:
- Room database (DetectionEntity, DetectionDao, VarroaDatabase)
- NetworkStateMonitor for tracking validated vs unvalidated networks
- Improved UI with BEE/LOCAL/UPLOAD indicators
- Manual sync trigger when internet + pending data

Version: 1.7.0 (versionCode 7)

app/build.gradle.kts

@@ -2,6 +2,7 @@ plugins {
     alias(libs.plugins.android.application)
     alias(libs.plugins.kotlin.android)
     alias(libs.plugins.kotlin.compose)
+    alias(libs.plugins.ksp)
 }
 
 android {
@@ -12,8 +13,8 @@ android {
         applicationId = "com.adamaps.varroa"
         minSdk = 26
         targetSdk = 34
-        versionCode = 5
-        versionName = "1.4.0"
+        versionCode = 7
+        versionName = "1.7.0"
 
         vectorDrawables {
             useSupportLibrary = true
@@ -69,5 +70,11 @@ dependencies {
     implementation(libs.osmdroid.android)
     implementation(libs.datastore.preferences)
     implementation(libs.coil.compose)
+    // Room (local database)
+    implementation(libs.room.runtime)
+    implementation(libs.room.ktx)
+    ksp(libs.room.compiler)
+    // WorkManager (background uploads)
+    implementation(libs.work.runtime.ktx)
     debugImplementation(libs.androidx.ui.tooling)
 }