fix: 移除未使用的区块链依赖库

移除 web3dart, bip39, ed25519_hd_key, hex 等未使用的库
这些库底层使用 sun.misc.Unsafe，可能触发华为安全检测

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/mobile-app/pubspec.lock

@@ -49,14 +49,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.13.0"
-  bip39:
-    dependency: "direct main"
-    description:
-      name: bip39
-      sha256: de1ee27ebe7d96b84bb3a04a4132a0a3007dcdd5ad27dd14aa87a29d97c45edc
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.0.6"
   boolean_selector:
     dependency: transitive
     description:
@@ -321,30 +313,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.1"
-  ed25519_hd_key:
-    dependency: "direct main"
-    description:
-      name: ed25519_hd_key
-      sha256: "31e191ec97492873067e46dc9cc0c7d55170559c83a478400feffa0627acaccf"
-      url: "https://pub.dev"
-    source: hosted
-    version: "2.3.0"
-  eip1559:
-    dependency: transitive
-    description:
-      name: eip1559
-      sha256: c2b81ac85f3e0e71aaf558201dd9a4600f051ece7ebacd0c5d70065c9b458004
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.6.2"
-  eip55:
-    dependency: transitive
-    description:
-      name: eip55
-      sha256: "213a9b86add87a5216328e8494b0ab836e401210c4d55eb5e521bd39e39169e1"
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.0.2"
   equatable:
     dependency: "direct main"
     description:
@@ -589,14 +557,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.3.2"
-  hex:
-    dependency: "direct main"
-    description:
-      name: hex
-      sha256: "4e7cd54e4b59ba026432a6be2dd9d96e4c5205725194997193bf871703b82c4a"
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.2.0"
   hive:
     dependency: "direct main"
     description:
@@ -757,14 +717,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.9.0"
-  json_rpc_2:
-    dependency: transitive
-    description:
-      name: json_rpc_2
-      sha256: "246b321532f0e8e2ba474b4d757eaa558ae4fdd0688fdbc1e1ca9705f9b8ca0e"
-      url: "https://pub.dev"
-    source: hosted
-    version: "3.0.3"
   json_serializable:
     dependency: "direct dev"
     description:
@@ -1085,14 +1037,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "7.0.1"
-  pinenacl:
-    dependency: transitive
-    description:
-      name: pinenacl
-      sha256: "57e907beaacbc3c024a098910b6240758e899674de07d6949a67b52fd984cbdf"
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.6.0"
   platform:
     dependency: transitive
     description:
@@ -1109,14 +1053,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.8"
-  pointycastle:
-    dependency: transitive
-    description:
-      name: pointycastle
-      sha256: "4be0097fcf3fd3e8449e53730c631200ebc7b88016acecab2b0da2f0149222fe"
-      url: "https://pub.dev"
-    source: hosted
-    version: "3.9.1"
   pool:
     dependency: transitive
     description:
@@ -1213,14 +1149,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.3.8"
-  sec:
-    dependency: transitive
-    description:
-      name: sec
-      sha256: "8bbd56df884502192a441b5f5d667265498f2f8728a282beccd9db79e215f379"
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.1.0"
   sentry:
     dependency: transitive
     description:
@@ -1602,14 +1530,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "15.0.2"
-  wallet:
-    dependency: transitive
-    description:
-      name: wallet
-      sha256: "687fd89a16557649b26189e597792962f405797fc64113e8758eabc2c2605c32"
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.0.13"
   watcher:
     dependency: transitive
     description:
@@ -1626,14 +1546,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.1.1"
-  web3dart:
-    dependency: "direct main"
-    description:
-      name: web3dart
-      sha256: "885e5e8f0cc3c87c09f160a7fce6279226ca41316806f7ece2001959c62ecced"
-      url: "https://pub.dev"
-    source: hosted
-    version: "2.7.3"
   web_socket:
     dependency: transitive
     description:

frontend/mobile-app/pubspec.yaml

@@ -23,12 +23,6 @@ dependencies:
   dio: ^5.4.3+1
   connectivity_plus: ^6.0.3
 
-  # 区块链
-  web3dart: ^2.7.3
-  bip39: ^1.0.6
-  ed25519_hd_key: ^2.3.0
-  hex: ^0.2.0
-
   # 本地存储
   shared_preferences: ^2.2.3
   flutter_secure_storage: ^9.0.0