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

assets/fixtures/auth/login_success.json

@@ -0,0 +1,22 @@
+{
+  "code": "00000",
+  "msg": "success",
+  "data": {
+    "saTokenInfo": {
+      "tokenName": "satoken",
+      "tokenValue": "mock-access-token-dev-1234567890abcdef",
+      "loginId": "1001",
+      "loginType": "login"
+    },
+    "userInfo": {
+      "realName": "Mock User",
+      "avatar": "",
+      "phone": "13800138000",
+      "email": "mock@example.com",
+      "sex": 1,
+      "workNo": "EMP001",
+      "orgName": "Example Corp",
+      "deptName": "Engineering"
+    }
+  }
+}

assets/fixtures/auth/refresh_success.json

@@ -0,0 +1,8 @@
+{
+  "code": "00000",
+  "msg": "success",
+  "data": {
+    "access_token": "mock-refreshed-access-token-abcdef",
+    "refresh_token": "mock-refreshed-refresh-token-fedcba"
+  }
+}

assets/fixtures/auth/send_sms_code_success.json

@@ -0,0 +1,5 @@
+{
+  "code": "00000",
+  "msg": "success",
+  "data": "123456"
+}

assets/fixtures/common/generic_success.json

@@ -0,0 +1,5 @@
+{
+  "code": "00000",
+  "msg": "success",
+  "data": null
+}

assets/fixtures/mine/avatar_upload.json

@@ -0,0 +1,7 @@
+{
+  "code": "00000",
+  "msg": "success",
+  "data": {
+    "url": "https://example.com/mock-avatar.jpg"
+  }
+}

assets/fixtures/mine/profile.json

@@ -0,0 +1,15 @@
+{
+  "code": "00000",
+  "msg": "success",
+  "data": {
+    "id": "1001",
+    "realName": "Mock User",
+    "avatar": "",
+    "phone": "13800138000",
+    "email": "mock@example.com",
+    "sex": 1,
+    "workNo": "EMP001",
+    "orgName": "Example Corp",
+    "deptName": "Engineering"
+  }
+}