App ID + launcher icon rename: halobestie.* → mybestie

- Customer: com.halobestie.client.client_app → com.mybestie
- Mitra:    com.halobestie.mitra.mitra_app  → com.mybestie.mitra
- iOS bundle IDs renamed to match (no .clientApp/.mitra camelCase legacy)

Mechanical rename touches Android build.gradle/Manifest/MainActivity
package, iOS pbxproj/Info.plist bundle IDs, Firebase configs
(google-services.json + GoogleService-Info.plist + firebase_options.dart),
new HaloBestie/Mitra launcher icons via flutter_launcher_icons (pubspec
config + adaptive-icon resources + AppIcon imageset), and the appId
references in every customer maestro flow + both .maestro/config.yaml
files. brandLogoBg (#FF699F) added to halo_tokens for the launcher pink.

Followup: re-register apps in Firebase consoles using the new package IDs;
strategy memo at project-firebase-env-strategy.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

client_app/pubspec.lock

@@ -33,6 +33,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.13.4"
+  archive:
+    dependency: transitive
+    description:
+      name: archive
+      sha256: a96e8b390886ee8abb49b7bd3ac8df6f451c621619f52a26e815fdcf568959ff
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.9"
   args:
     dependency: transitive
     description:
@@ -358,6 +366,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.20.5"
+  flutter_launcher_icons:
+    dependency: "direct dev"
+    description:
+      name: flutter_launcher_icons
+      sha256: "526faf84284b86a4cb36d20a5e45147747b7563d921373d4ee0559c54fcdbcea"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.13.1"
   flutter_lints:
     dependency: "direct dev"
     description:
@@ -607,6 +623,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.1.2"
+  image:
+    dependency: transitive
+    description:
+      name: image
+      sha256: f9881ff4998044947ec38d098bc7c8316ae1186fa786eddffdb867b9bc94dfce
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.8.0"
   io:
     dependency: transitive
     description:
@@ -879,6 +903,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.5.2"
+  posix:
+    dependency: transitive
+    description:
+      name: posix
+      sha256: "185ef7606574f789b40f289c233efa52e96dead518aed988e040a10737febb07"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.5.0"
   pub_semver:
     dependency: transitive
     description: