docs: 更新协议文档，删除废弃计划文档

- 更新 http-error-codes, user-points-chat-data-protocol
- 更新 divination-run-protocol, profile-protocol
- 删除废弃的后端和前端设计计划文档

apps/lib/app/app.dart

@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';
 
@@ -181,6 +183,56 @@ class _EryaoAppState extends State<EryaoApp> {
     }
   }
 
+  Future<void> _handleHistorySessionDeleted(String threadId) async {
+    final user = _authBloc.state.user;
+    if (user == null) {
+      return;
+    }
+
+    final rollback = List<DivinationResultData>.from(_historyRecords);
+    if (!mounted) {
+      return;
+    }
+    setState(() {
+      _historyRecords = _historyRecords
+          .where((item) => item.threadId != threadId)
+          .toList(growable: false);
+      _loadedHistoryUserEmail = user.email;
+    });
+
+    unawaited(
+      _deleteHistorySessionRemote(
+        threadId: threadId,
+        userEmail: user.email,
+        rollback: rollback,
+      ),
+    );
+  }
+
+  Future<void> _deleteHistorySessionRemote({
+    required String threadId,
+    required String userEmail,
+    required List<DivinationResultData> rollback,
+  }) async {
+    try {
+      await _divinationApi.deleteSession(threadId: threadId);
+    } catch (error, stackTrace) {
+      _logger.error(
+        message: 'Failed to delete history session',
+        error: error,
+        stackTrace: stackTrace,
+        extra: <String, dynamic>{'threadId': threadId},
+      );
+      if (!mounted) {
+        return;
+      }
+      setState(() {
+        _historyRecords = rollback;
+        _loadedHistoryUserEmail = userEmail;
+      });
+    }
+  }
+
   List<DivinationResultData> _mergeAndSortHistory(
     List<DivinationResultData> input,
   ) {
@@ -355,11 +407,13 @@ class _EryaoAppState extends State<EryaoApp> {
         profileSettings: _profileSettings,
         historyRecords: _historyRecords,
         coinBalance: _creditsBalance,
+        divinationApi: _divinationApi,
         onLocaleChanged: _handleInterfaceLanguageChanged,
         onProfileSettingsChanged: _saveProfileSettings,
         onSaveProfile: _saveProfile,
         onUploadAvatar: _uploadAvatar,
         onDivinationCompleted: _handleDivinationCompleted,
+        onDeleteHistorySession: _handleHistorySessionDeleted,
         onLogout: _authBloc.logout,
       );
     }