fix: 管理员系统 + 注册流程重构 + UI改版 + 全链路修复

- 新增管理员角色(手机号12345678910)，管理员可增删医生、查看患者
- 注册页重构：去掉角色选择+审核码，改为选医生+填姓名
- 医生端点按DoctorId过滤患者，Patient↔Doctor关系建立
- Doctor/DoctorProfile/User实体新增关联字段
- JSON循环引用修复(IgnoreCycles)
- /api/doctors改为公开接口
- 登录闪屏修复+原生Android启动页
- 输入框全局白底+灰框
- 蓝牙重连同步修复
- Web端(doctor_web+health_app/web)全部删除
- 全局UI改版：白底企业风，新配色和组件系统
- 新品牌图标和启动图

health_app/pubspec.lock

@@ -145,14 +145,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.7.12"
-  dev_build:
-    dependency: transitive
-    description:
-      name: dev_build
-      sha256: f2742f154e484a52471dcc7eda17e6da06ab8b1d0a64b4845710d5de4fa9cc47
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.1.7+4"
   dio:
     dependency: "direct main"
     description:
@@ -661,14 +653,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.0.0"
-  native_toolchain_c:
-    dependency: transitive
-    description:
-      name: native_toolchain_c
-      sha256: f59351d28f49520cd3a74eb1f41c5f19ae15e53c65a3231d14af672e46510a96
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.19.1"
   node_preamble:
     dependency: transitive
     description:
@@ -837,14 +821,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.5.2"
-  process_run:
-    dependency: transitive
-    description:
-      name: process_run
-      sha256: e0e24c11a49445c449911daef46cf28d68e80a5e33daafbfbc6d6819a1f83519
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.3.3+1"
   pub_semver:
     dependency: transitive
     description:
@@ -1002,22 +978,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.5.8"
-  sqflite_common_ffi:
-    dependency: transitive
-    description:
-      name: sqflite_common_ffi
-      sha256: cd0c7f7de39a08f2d54ef144d9058c46eca8461879aaa648025643455c1e5a20
-      url: "https://pub.dev"
-    source: hosted
-    version: "2.4.0+3"
-  sqflite_common_ffi_web:
-    dependency: "direct main"
-    description:
-      name: sqflite_common_ffi_web
-      sha256: "79338d0b69521d70cea10f841209ac87ce617921aaf7d33e7380682c83da1f06"
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.1.1"
   sqflite_darwin:
     dependency: transitive
     description:
@@ -1034,14 +994,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.4.0"
-  sqlite3:
-    dependency: transitive
-    description:
-      name: sqlite3
-      sha256: "9488c7d2cdb1091c91cacf7e207cff81b28bff8e366f042bad3afe7d34afe189"
-      url: "https://pub.dev"
-    source: hosted
-    version: "3.3.2"
   sse:
     dependency: transitive
     description: