chore: 初始化脚手架 — sunny_mochi 企业级 Flutter 模板

Core 基础设施：Flavor 三包体系、Drift+SQLCipher 加密数据库
7 拦截器 Dio 网络栈、CrashReporter 崩溃日志、Sealed Failure 错误体系
5 色板主题系统、Auth 认证骨架（Clean Architecture）、Dev Panel、Mock Adapter

通过验证：flutter analyze（0 errors）、flutter test（全绿）、staging APK 74.8MB

lib/core/error/exception_mapper.g.dart

@@ -0,0 +1,56 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'exception_mapper.dart';
+
+// **************************************************************************
+// RiverpodGenerator
+// **************************************************************************
+
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint, type=warning
+/// 全局 [ExceptionMapper] 注入点。测试时用 `overrideWithValue` 替换为 stub。
+
+@ProviderFor(exceptionMapper)
+final exceptionMapperProvider = ExceptionMapperProvider._();
+
+/// 全局 [ExceptionMapper] 注入点。测试时用 `overrideWithValue` 替换为 stub。
+
+final class ExceptionMapperProvider
+    extends
+        $FunctionalProvider<ExceptionMapper, ExceptionMapper, ExceptionMapper>
+    with $Provider<ExceptionMapper> {
+  /// 全局 [ExceptionMapper] 注入点。测试时用 `overrideWithValue` 替换为 stub。
+  ExceptionMapperProvider._()
+    : super(
+        from: null,
+        argument: null,
+        retry: null,
+        name: r'exceptionMapperProvider',
+        isAutoDispose: false,
+        dependencies: null,
+        $allTransitiveDependencies: null,
+      );
+
+  @override
+  String debugGetCreateSourceHash() => _$exceptionMapperHash();
+
+  @$internal
+  @override
+  $ProviderElement<ExceptionMapper> $createElement($ProviderPointer pointer) =>
+      $ProviderElement(pointer);
+
+  @override
+  ExceptionMapper create(Ref ref) {
+    return exceptionMapper(ref);
+  }
+
+  /// {@macro riverpod.override_with_value}
+  Override overrideWithValue(ExceptionMapper value) {
+    return $ProviderOverride(
+      origin: this,
+      providerOverride: $SyncValueProvider<ExceptionMapper>(value),
+    );
+  }
+}
+
+String _$exceptionMapperHash() => r'b02606666fb3e934dd54e4440c633471ab224c20';