refactor: remove CrashReporter and related logging components

- Removed CrashReporter interface and its implementation, SentryCrashReporter.
- Deleted log buffering functionality and associated LogBuffer class.
- Updated LoggerAppLogger to eliminate dependencies on removed components.
- Simplified logging structure to focus on AppLogger and sensitive data scrubbing.
- Adjusted AppEnv to remove Sentry-related configurations.
- Refactored tests to align with the new logging architecture.

app/pubspec.yaml

@@ -26,7 +26,6 @@ dependencies:
   flutter_riverpod: 3.2.1
   intl: any
   native_scan: ^0.1.0
-  sentry_flutter: ^9.26.0
 
 dev_dependencies:
   flutter_lints: ^6.0.0
@@ -34,19 +33,13 @@ dev_dependencies:
     sdk: flutter
   integration_test:
     sdk: flutter
-  sentry_dart_plugin: ^3.4.0
   # 只为测试拿 InMemorySharedPreferencesAsync，不在 lib/ 里出现。
   shared_preferences_platform_interface: ^2.4.2
 
 flutter:
   uses-material-design: true
   generate: true
-
-# release 构建后由 CI 调用 `dart run sentry_dart_plugin` 上传符号表。
-# 见 08 §release 构建 和 13 §崩溃上报。
-sentry:
-  upload_debug_symbols: true
-  upload_source_maps: false
-  project: conti-retail-app
-  org: continental
-  # auth_token 只从 CI 变量 SENTRY_AUTH_TOKEN 读，绝不写进仓库
+  assets:
+    - env/dev.json
+    - env/uat.json
+    - env/prod.json