refactor: 死代码清理 + 趋势图重构 + 侧边栏交互优化 + 智能体卡片去延迟

- 死代码清理: 删除 AppCard/AppMenuItem/AppTabChip/AppButtons 等 4 个未使用 Widget 文件; 清理 common_widgets/enterprise_widgets/app_status_badge 中未使用 class; 移除 HealthService 等未使用方法; 后端移除 ExerciseService.CreateFromItemsAsync/HealthArchiveService.GetOrCreateAsync/MedicationAgentHandler 死分支/ChatRequest DTO
- 趋势图: 直线折线 + 渐变填充 + 阴影; 去网格; X 轴日+月份; Y 轴整数刻度最多 4 个; 点击数据点/录入记录显示上方浮层; 选中点变实心
- 侧边栏: 对话记录改单选删除(灰底高亮); 操作栏浮层修复触摸问题; 常用功能/健康仪表盘间距收紧; _Panel 去外框
- 智能体: 欢迎卡片去掉 400ms 延迟; 胶囊去阴影
- 其他: api_client IP 适配; 多页面 UI 微调; 新增 chat_provider/prelaunch_guardrails 测试

backend/src/Health.Infrastructure/AI/AgentHandlers/medication_agent_handler.cs

@@ -33,21 +33,17 @@ public static class MedicationAgentHandler
     };
 
     public static List<ToolDefinition> Tools => [ManageMedicationTool, CommonAgentHandler.CheckArchiveTool];
-
     public static async Task<object> Execute(
         string toolName,
         JsonElement args,
-        AppDbContext db,
         Guid userId,
-        IMedicationService? medications = null,
+        IMedicationService medications,
         CancellationToken ct = default)
     {
         return toolName switch
         {
-            "manage_medication" => medications != null
-                ? await ExecuteManageMedication(medications, userId, args, ct)
-                : await ExecuteManageMedication(db, userId, args),
-            _ => new { success = false, message = $"未知工具: {toolName}" }
+            "manage_medication" => await ExecuteManageMedication(medications, userId, args, ct),
+            _ => new { success = false, message = $"鏈煡宸ュ叿: {toolName}" }
         };
     }
 
@@ -111,82 +107,6 @@ public static class MedicationAgentHandler
         return success ? new { success = true } : new { success = false, message = "药品不存在或今天已经打卡" };
     }
 
-    private static async Task<object> ExecuteManageMedication(AppDbContext db, Guid userId, JsonElement args)
-    {
-        var action = args.TryGetProperty("action", out var a) ? a.GetString()! : "query";
-        return action switch
-        {
-            "create" => await CreateMedication(db, userId, args),
-            "query" => await QueryMedications(db, userId),
-            "confirm" => await ConfirmMedication(db, userId, args),
-            _ => new { success = false, message = $"未知操作: {action}" }
-        };
-    }
-
-    private static async Task<object> CreateMedication(AppDbContext db, Guid userId, JsonElement args)
-    {
-        var name = args.TryGetProperty("name", out var n) ? n.GetString()! : "";
-        var dosage = args.TryGetProperty("dosage", out var dg) ? dg.GetString() : null;
-        var frequency = ReadFrequency(args);
-        var times = ReadTimes(args);
-        var durationDays = args.TryGetProperty("duration_days", out var dd) ? dd.GetInt32() : 0;
-        var startDate = ReadStartDate(args);
-
-        var med = new Medication
-        {
-            Id = Guid.NewGuid(),
-            UserId = userId,
-            Name = name,
-            Dosage = dosage,
-            Frequency = frequency,
-            TimeOfDay = times.Count > 0 ? times : [new TimeOnly(8, 0)],
-            Source = MedicationSource.AiEntry,
-            IsActive = true,
-            StartDate = startDate,
-            EndDate = durationDays > 0 ? startDate.AddDays(durationDays) : null,
-        };
-        db.Medications.Add(med);
-        await db.SaveChangesAsync();
-
-        var timeLabels = times.Count > 0 ? string.Join(", ", times.Select(t => t.ToString("HH:mm"))) : "08:00";
-        return new
-        {
-            success = true,
-            medication_id = med.Id,
-            name = med.Name,
-            dosage = med.Dosage,
-            frequency = med.Frequency.ToString(),
-            time = timeLabels,
-            start_date = med.StartDate?.ToString("yyyy-MM-dd"),
-            duration_days = durationDays,
-        };
-    }
-
-    private static async Task<object> QueryMedications(AppDbContext db, Guid userId)
-    {
-        var meds = await db.Medications.Where(m => m.UserId == userId && m.IsActive)
-            .Select(m => new { m.Id, m.Name, m.Dosage, m.TimeOfDay }).ToListAsync();
-        return new { count = meds.Count, medications = meds };
-    }
-
-    private static async Task<object> ConfirmMedication(AppDbContext db, Guid userId, JsonElement args)
-    {
-        var medId = args.TryGetProperty("medication_id", out var mid) ? mid.GetGuid() : Guid.Empty;
-        var med = await db.Medications.FirstOrDefaultAsync(m => m.Id == medId && m.UserId == userId);
-        if (med == null) return new { success = false, message = "药品不存在" };
-
-        db.MedicationLogs.Add(new MedicationLog
-        {
-            Id = Guid.NewGuid(),
-            MedicationId = medId,
-            UserId = userId,
-            Status = MedicationLogStatus.Taken,
-            ScheduledTime = TimeOnly.FromDateTime(DateTime.UtcNow.AddHours(8)),
-            ConfirmedAt = DateTime.UtcNow,
-        });
-        await db.SaveChangesAsync();
-        return new { success = true };
-    }
 
     private static MedicationFrequency ReadFrequency(JsonElement args)
     {