Give the Fly App its own identity instead of the DJI sample's

The app still shipped under the identity of the DJI MSDK Flutter sample it
was started from, so every install, log line and crash report named a DJI
sample rather than PilotVault. Rename both namespaces:

  Android  com.dji.flutter.dji_msdk_sample -> com.pilotvault.flyapp
  Dart     dji_msdk_sample                 -> pilotvault_fly

The Kotlin sources move under com/pilotvault/flyapp to match. The manifest's
meta-data name stays com.dji.sdk.API_KEY — that string is fixed by the SDK's
own lookup and is not ours to rename.

A DJI App Key is bound to the application id, so the old key died with the
old id and a new one was registered against com.pilotvault.flyapp. That
forced the key to be touched anyway, so stop committing it: the Gradle
property becomes PILOTVAULT_FLY_API_KEY and now lives in the developer's
~/.gradle/gradle.properties, which Gradle merges into every build.
android/gradle.properties keeps the build flags — gitignoring it wholesale
would have taken useAndroidX and the Flutter migrator flags out of version
control with it — and documents where the key belongs.

A missing key prints a banner rather than silently baking the placeholder
into an APK that cannot register, which otherwise only surfaces as a
registration failure once the tablet is out at the aircraft. That warning
uses println because `flutter build` filters Gradle's warn-level output.

The rename means Android treats this as a new app: uninstall
com.dji.flutter.dji_msdk_sample before installing, or both will sit on the
tablet.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Fly App/README.md

@@ -46,17 +46,29 @@ SDK registration will fail without a valid App Key bound to this app's
 application id.
 
 1. Sign in at <https://developer.dji.com/user/apps/> and create a new app.
-   - **Package name** must be exactly: `com.dji.flutter.dji_msdk_sample`
+   - **Package name** must be exactly: `com.pilotvault.flyapp`
    - SDK: **Mobile SDK**
 2. Copy the generated **App Key**.
-3. Paste it into [`android/gradle.properties`](android/gradle.properties):
+3. Put it in your **user-global** Gradle properties — *not* in the repo. Gradle
+   merges this file into every build, so the key stays off version control:
+
+   - Linux/macOS: `~/.gradle/gradle.properties`
+   - Windows: `%USERPROFILE%\.gradle\gradle.properties`
 
    ```properties
-   DJI_API_KEY=your_real_app_key_here
+   PILOTVAULT_FLY_API_KEY=your_real_app_key_here
+   ```
+
+   For a one-off build you can pass it inline instead:
+
+   ```bash
+   flutter build apk --debug -PPILOTVAULT_FLY_API_KEY=your_real_app_key_here
    ```
 
    The key is injected into `AndroidManifest.xml` at build time via a
-   `manifestPlaceholder` (`com.dji.sdk.API_KEY`).
+   `manifestPlaceholder` (`com.dji.sdk.API_KEY`). If it is missing the build
+   still succeeds but prints a warning, and SDK registration fails on the
+   aircraft — so watch for that warning.
 
 ## Run
 

Fly App/android/app/build.gradle

@@ -6,7 +6,7 @@ plugins {
 }
 
 android {
-    namespace = "com.dji.flutter.dji_msdk_sample"
+    namespace = "com.pilotvault.flyapp"
     compileSdk = 35
     // DJI MSDK V4 ships prebuilt native (.so) libraries; pin a known-good NDK.
     ndkVersion = flutter.ndkVersion
@@ -21,7 +21,7 @@ android {
     }
 
     defaultConfig {
-        applicationId = "com.dji.flutter.dji_msdk_sample"
+        applicationId = "com.pilotvault.flyapp"
         // DJI MSDK V4 requires Android 5.0+ (API 21).
         minSdkVersion = flutter.minSdkVersion
         targetSdk = 34
@@ -37,9 +37,24 @@ android {
         }
 
         // The DJI App Key is injected into AndroidManifest.xml at build time.
-        // Set DJI_API_KEY in android/gradle.properties (or pass -PDJI_API_KEY=...).
-        manifestPlaceholders["DJI_API_KEY"] =
-                (project.findProperty("DJI_API_KEY") ?: "PASTE_YOUR_DJI_APP_KEY_HERE")
+        // It is deliberately not stored in the repo — see android/gradle.properties
+        // for where to put it (~/.gradle/gradle.properties, or -P on the command
+        // line). Warn loudly when it is missing: the build still succeeds, but the
+        // resulting APK fails DJI SDK registration once it is on the aircraft.
+        // println, not logger.warn: `flutter build` filters Gradle's warn-level
+        // output, so a logger.warn here is never seen by the person building.
+        def djiAppKey = project.findProperty("PILOTVAULT_FLY_API_KEY")
+        if (!djiAppKey) {
+            println(
+                    "\n**************************************************************\n" +
+                    "WARNING: PILOTVAULT_FLY_API_KEY is not set.\n" +
+                    "The APK will build, but DJI SDK registration will FAIL at\n" +
+                    "runtime. Set the key in ~/.gradle/gradle.properties - see\n" +
+                    "android/gradle.properties for details.\n" +
+                    "**************************************************************\n")
+        }
+        manifestPlaceholders["PILOTVAULT_FLY_API_KEY"] =
+                (djiAppKey ?: "PASTE_YOUR_DJI_APP_KEY_HERE")
     }
 
     buildTypes {

Fly App/android/app/src/main/AndroidManifest.xml

@@ -48,10 +48,12 @@
             android:name="org.apache.http.legacy"
             android:required="false" />
 
-        <!-- DJI App Key. The value is injected from gradle.properties (DJI_API_KEY). -->
+        <!-- DJI App Key. The value is injected from gradle.properties
+             (PILOTVAULT_FLY_API_KEY). The meta-data name below is fixed by the
+             DJI SDK and must stay "com.dji.sdk.API_KEY". -->
         <meta-data
             android:name="com.dji.sdk.API_KEY"
-            android:value="${DJI_API_KEY}" />
+            android:value="${PILOTVAULT_FLY_API_KEY}" />
 
         <activity
             android:name=".MainActivity"

Fly App/android/app/src/main/kotlin/com/pilotvault/flyapp/AccountBridge.kt

@@ -1,4 +1,4 @@
-package com.dji.flutter.dji_msdk_sample
+package com.pilotvault.flyapp
 
 import dji.common.error.DJIError
 import dji.common.useraccount.UserAccountState

Fly App/android/app/src/main/kotlin/com/pilotvault/flyapp/CameraBridge.kt

@@ -1,4 +1,4 @@
-package com.dji.flutter.dji_msdk_sample
+package com.pilotvault.flyapp
 
 import dji.common.camera.ExposureSettings
 import dji.common.camera.SettingsDefinitions

Fly App/android/app/src/main/kotlin/com/pilotvault/flyapp/DjiApplication.kt

@@ -1,4 +1,4 @@
-package com.dji.flutter.dji_msdk_sample
+package com.pilotvault.flyapp
 
 import android.app.Application
 import android.content.Context

Fly App/android/app/src/main/kotlin/com/pilotvault/flyapp/DjiSdkBridge.kt

@@ -1,4 +1,4 @@
-package com.dji.flutter.dji_msdk_sample
+package com.pilotvault.flyapp
 
 import android.content.Context
 import android.os.Handler

Fly App/android/app/src/main/kotlin/com/pilotvault/flyapp/DjiVideoView.kt

@@ -1,4 +1,4 @@
-package com.dji.flutter.dji_msdk_sample
+package com.pilotvault.flyapp
 
 import android.content.Context
 import android.graphics.SurfaceTexture

Fly App/android/app/src/main/kotlin/com/pilotvault/flyapp/FlightControllerBridge.kt

@@ -1,4 +1,4 @@
-package com.dji.flutter.dji_msdk_sample
+package com.pilotvault.flyapp
 
 import dji.common.flightcontroller.FlightControllerState
 import dji.sdk.base.BaseProduct

Fly App/android/app/src/main/kotlin/com/pilotvault/flyapp/GimbalBridge.kt

@@ -1,4 +1,4 @@
-package com.dji.flutter.dji_msdk_sample
+package com.pilotvault.flyapp
 
 import dji.common.gimbal.Rotation
 import dji.common.gimbal.RotationMode

Fly App/android/app/src/main/kotlin/com/pilotvault/flyapp/MainActivity.kt

@@ -1,4 +1,4 @@
-package com.dji.flutter.dji_msdk_sample
+package com.pilotvault.flyapp
 
 import android.Manifest
 import android.content.pm.PackageManager

Fly App/android/app/src/main/kotlin/com/pilotvault/flyapp/MediaBridge.kt

@@ -1,4 +1,4 @@
-package com.dji.flutter.dji_msdk_sample
+package com.pilotvault.flyapp
 
 import android.graphics.Bitmap
 import dji.common.camera.SettingsDefinitions

Fly App/android/app/src/main/kotlin/com/pilotvault/flyapp/MissionBridge.kt

@@ -1,4 +1,4 @@
-package com.dji.flutter.dji_msdk_sample
+package com.pilotvault.flyapp
 
 import android.graphics.RectF
 import dji.common.mission.activetrack.ActiveTrackMission

Fly App/android/gradle.properties

@@ -3,11 +3,18 @@ android.useAndroidX=true
 android.enableJetifier=true
 
 # DJI Mobile SDK
-# Register the application id "com.dji.flutter.dji_msdk_sample" at
-# https://developer.dji.com/user/apps/ to obtain an App Key, then paste it below.
-# This value is injected into AndroidManifest.xml via a manifestPlaceholder.
-# DJI_API_KEY=PASTE_YOUR_DJI_APP_KEY_HERE
-DJI_API_KEY=e427e182254c91013ba591e9
+# Register the application id "com.pilotvault.flyapp" at
+# https://developer.dji.com/user/apps/ to obtain an App Key. The key is injected
+# into AndroidManifest.xml via a manifestPlaceholder.
+#
+# The key is deliberately NOT stored in this file, because this file is tracked
+# in git. Put it in your user-global Gradle properties instead, which Gradle
+# merges into every build:
+#
+#   ~/.gradle/gradle.properties        (Windows: %USERPROFILE%\.gradle\)
+#   PILOTVAULT_FLY_API_KEY=your_app_key_here
+#
+# Or pass it per-invocation: -PPILOTVAULT_FLY_API_KEY=your_app_key_here
 # This builtInKotlin flag was added automatically by Flutter migrator
 android.builtInKotlin=false
 # This newDsl flag was added automatically by Flutter migrator

Fly App/backup_pocketbase_app/pubspec_pocketbase.yaml

@@ -1,4 +1,4 @@
-name: dji_msdk_sample
+name: pilotvault_fly
 description: "DJI Mobile SDK V4 sample app built with Flutter"
 # The following line prevents the package from being accidentally published to
 # pub.dev using `flutter pub publish`. This is preferred for private packages.

Fly App/lib/ui/map_page.dart

@@ -82,7 +82,7 @@ class _MapPageState extends State<MapPage> {
           children: <Widget>[
             TileLayer(
               urlTemplate: 'https://tile.openstreetmap.org/{z}/{x}/{y}.png',
-              userAgentPackageName: 'com.dji.flutter.dji_msdk_sample',
+              userAgentPackageName: 'com.pilotvault.flyapp',
             ),
             if (_waypoints.length >= 2)
               PolylineLayer<Object>(polylines: <Polyline<Object>>[

Fly App/pubspec.yaml

@@ -1,4 +1,4 @@
-name: dji_msdk_sample
+name: pilotvault_fly
 description: "PilotVault Fly App — drone telemetry client built with Flutter (DJI Mobile SDK V4)"
 # The following line prevents the package from being accidentally published to
 # pub.dev using `flutter pub publish`. This is preferred for private packages.

Fly App/test/widget_test.dart

@@ -1,6 +1,6 @@
 import 'package:flutter_test/flutter_test.dart';
 
-import 'package:dji_msdk_sample/main.dart';
+import 'package:pilotvault_fly/main.dart';
 
 void main() {
   testWidgets('Shows the login screen when signed out',