Method StopTimer

backend/Controllers/TimeLogsController.cs:35–43

([FromBody] StopTimerDto dto, [FromQuery] int taskId)

    }

    [HttpPost("stop")]
    public async Task<IActionResult> StopTimer([FromBody] StopTimerDto dto, [FromQuery] int taskId)
    {
        var log = await _taskService.StopTimerAsync(taskId, GetUserId(), dto.StoppedAt);
        if (log == null) return NotFound(new { message = "No running timer found for this task." });

        await NotifyTaskUpdated(taskId);
        return Ok(log);
    }

    [HttpPost("manual")]
    public async Task<IActionResult> AddManualTimeLog([FromBody] AddManualTimeLogDto dto)