feat(api): auto-activate streak freeze on inactive day (#108)

src/Orbit.Api/Controllers/GamificationController.cs

@@ -2,7 +2,6 @@
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Orbit.Api.Extensions;
-using Orbit.Application.Gamification.Commands;
 using Orbit.Application.Gamification.Queries;
 
 namespace Orbit.Api.Controllers;
@@ -51,18 +50,4 @@ public async Task<IActionResult> GetStreakInfo(CancellationToken cancellationTok
             ? Ok(result.Value)
             : BadRequest(new { error = result.Error });
     }
-
-    [HttpPost("streak/freeze")]
-    [ProducesResponseType(StatusCodes.Status200OK)]
-    [ProducesResponseType(StatusCodes.Status400BadRequest)]
-    [ProducesResponseType(StatusCodes.Status401Unauthorized)]
-    public async Task<IActionResult> ActivateStreakFreeze(CancellationToken cancellationToken)
-    {
-        var command = new ActivateStreakFreezeCommand(HttpContext.GetUserId());
-        var result = await mediator.Send(command, cancellationToken);
-
-        return result.IsSuccess
-            ? Ok(result.Value)
-            : BadRequest(new { error = result.Error });
-    }
 }

src/Orbit.Api/Extensions/ServiceCollectionExtensions.cs

@@ -188,7 +188,6 @@ public static WebApplicationBuilder AddOrbitAiServices(this WebApplicationBuilde
         builder.Services.AddScoped<IAiTool, GetUserFactsTool>();
         builder.Services.AddScoped<IAiTool, DeleteUserFactsTool>();
         builder.Services.AddScoped<IAiTool, GetGamificationOverviewTool>();
-        builder.Services.AddScoped<IAiTool, ActivateStreakFreezeTool>();
         builder.Services.AddScoped<IAiTool, GetReferralOverviewTool>();
         builder.Services.AddScoped<IAiTool, GetSubscriptionOverviewTool>();
         builder.Services.AddScoped<IAiTool, ManageSubscriptionTool>();
@@ -345,6 +344,7 @@ public static WebApplicationBuilder AddOrbitInfrastructure(this WebApplicationBu
         builder.Services.AddHostedService<SlipAlertSchedulerService>();
         builder.Services.AddHostedService<AccountDeletionService>();
         builder.Services.AddHostedService<HabitDueDateAdvancementService>();
+        builder.Services.AddHostedService<StreakFreezeAutoActivationService>();
         builder.Services.AddHostedService<DataEncryptionMigrationService>();
         builder.Services.AddHostedService<SyncCleanupService>();
         builder.Services.AddHostedService<CalendarAutoSyncService>();

src/Orbit.Api/Mcp/Tools/GamificationTools.cs

@@ -2,7 +2,6 @@
 using System.Security.Claims;
 using MediatR;
 using ModelContextProtocol.Server;
-using Orbit.Application.Gamification.Commands;
 using Orbit.Application.Gamification.Queries;
 
 namespace Orbit.Api.Mcp.Tools;
@@ -91,24 +90,6 @@ public async Task<string> GetStreakInfo(
                (s.RecentFreezeDates.Count > 0 ? $"Recent freeze dates: {string.Join(", ", s.RecentFreezeDates)}" : "");
     }
 
-    [McpServerTool(Name = "activate_streak_freeze"), Description("Activate a streak freeze to protect the current streak. Limited to 2 per month.")]
-    public async Task<string> ActivateStreakFreeze(
-        ClaimsPrincipal user,
-        CancellationToken cancellationToken = default)
-    {
-        var userId = GetUserId(user);
-        var command = new ActivateStreakFreezeCommand(userId);
-        var result = await mediator.Send(command, cancellationToken);
-
-        if (result.IsFailure)
-            return $"Error: {result.Error}";
-
-        var r = result.Value;
-        return $"Streak freeze activated for {r.FrozenDate}\n" +
-               $"Current streak preserved: {r.CurrentStreak} days\n" +
-               $"Freezes remaining this month: {r.FreezesRemainingThisMonth}";
-    }
-
     private static Guid GetUserId(ClaimsPrincipal user)
     {
         var claim = user.FindFirst(ClaimTypes.NameIdentifier)?.Value

src/Orbit.Application/Chat/Tools/Implementations/PlatformTools.cs

@@ -4,7 +4,6 @@
 using Orbit.Application.ApiKeys.Commands;
 using Orbit.Application.ApiKeys.Queries;
 using Orbit.Application.Chat.Tools;
-using Orbit.Application.Gamification.Commands;
 using Orbit.Application.Gamification.Queries;
 using Orbit.Application.Referrals.Queries;
 using Orbit.Application.Subscriptions.Commands;
@@ -67,26 +66,6 @@ public async Task<ToolResult> ExecuteAsync(JsonElement args, Guid userId, Cancel
     }
 }
 
-public class ActivateStreakFreezeTool(IMediator mediator) : IAiTool
-{
-    public string Name => "activate_streak_freeze";
-    public string Description => "Activate one available streak freeze for the user.";
-
-    public object GetParameterSchema() => new
-    {
-        type = JsonSchemaTypes.Object,
-        properties = new { }
-    };
-
-    public async Task<ToolResult> ExecuteAsync(JsonElement args, Guid userId, CancellationToken ct)
-    {
-        var result = await mediator.Send(new ActivateStreakFreezeCommand(userId), ct);
-        return result.IsSuccess
-            ? new ToolResult(true, EntityId: userId.ToString(), EntityName: "Activated streak freeze", Payload: result.Value)
-            : new ToolResult(false, EntityId: userId.ToString(), Error: result.Error);
-    }
-}
-
 public class GetReferralOverviewTool(IMediator mediator) : IAiTool
 {
     public string Name => "get_referral_overview";

src/Orbit.Domain/Entities/SentStreakFreezeAlert.cs

@@ -0,0 +1,22 @@
+using Orbit.Domain.Common;
+
+namespace Orbit.Domain.Entities;
+
+public class SentStreakFreezeAlert : Entity
+{
+    public Guid UserId { get; private set; }
+    public DateOnly FrozenDate { get; private set; }
+    public DateTime SentAtUtc { get; private set; }
+
+    private SentStreakFreezeAlert() { }
+
+    public static SentStreakFreezeAlert Create(Guid userId, DateOnly frozenDate)
+    {
+        return new SentStreakFreezeAlert
+        {
+            UserId = userId,
+            FrozenDate = frozenDate,
+            SentAtUtc = DateTime.UtcNow
+        };
+    }
+}

src/Orbit.Domain/Models/AgentContracts.cs

@@ -264,7 +264,6 @@ public static class AgentCapabilityIds
     public const string CalendarRead = "calendar.read";
     public const string CalendarSyncManage = "calendar.sync.manage";
     public const string GamificationRead = "gamification.read";
-    public const string GamificationWrite = "gamification.write";
     public const string ChecklistTemplatesRead = "checklist-templates.read";
     public const string ChecklistTemplatesWrite = "checklist-templates.write";
     public const string UserFactsRead = "user-facts.read";
@@ -305,7 +304,6 @@ public static class AgentScopes
     public const string ReadCalendar = "read_calendar";
     public const string ManageCalendarSync = "manage_calendar_sync";
     public const string ReadGamification = "read_gamification";
-    public const string WriteGamification = "write_gamification";
     public const string ReadChecklistTemplates = "read_checklist_templates";
     public const string WriteChecklistTemplates = "write_checklist_templates";
     public const string ReadUserFacts = "read_user_facts";
@@ -344,7 +342,6 @@ public static class AgentScopes
         ReadCalendar,
         ManageCalendarSync,
         ReadGamification,
-        WriteGamification,
         ReadChecklistTemplates,
         WriteChecklistTemplates,
         ReadUserFacts,