Add actionable push notifications and fix recurring task completion

Features:
- Add task action buttons to push notifications (complete, view, cancel, etc.)
- Add button types logic for different task states (overdue, in_progress, etc.)
- Implement Chain of Responsibility pattern for task categorization
- Add comprehensive kanban categorization documentation

Fixes:
- Reset recurring task status to Pending after completion so tasks appear
  in correct kanban column (was staying in "In Progress")
- Fix PostgreSQL EXTRACT function error in overdue notifications query
- Update seed data to properly set next_due_date for recurring tasks

Admin:
- Add tasks list to residence detail page
- Fix task edit page to properly handle all fields

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

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

internal/services/task_service.go

@@ -3,7 +3,6 @@ package services
 import (
 	"context"
 	"errors"
-	"fmt"
 	"time"
 
 	"github.com/rs/zerolog/log"
@@ -142,6 +141,7 @@ func (s *TaskService) CreateTask(req *requests.CreateTaskRequest, userID uint) (
 		return nil, ErrResidenceAccessDenied
 	}
 
+	dueDate := req.DueDate.ToTimePtr()
 	task := &models.Task{
 		ResidenceID:   req.ResidenceID,
 		CreatedByID:   userID,
@@ -152,7 +152,8 @@ func (s *TaskService) CreateTask(req *requests.CreateTaskRequest, userID uint) (
 		StatusID:      req.StatusID,
 		FrequencyID:   req.FrequencyID,
 		AssignedToID:  req.AssignedToID,
-		DueDate:       req.DueDate.ToTimePtr(),
+		DueDate:       dueDate,
+		NextDueDate:   dueDate, // Initialize next_due_date to due_date
 		EstimatedCost: req.EstimatedCost,
 		ContractorID:  req.ContractorID,
 	}
@@ -213,7 +214,13 @@ func (s *TaskService) UpdateTask(taskID, userID uint, req *requests.UpdateTaskRe
 		task.AssignedToID = req.AssignedToID
 	}
 	if req.DueDate != nil {
-		task.DueDate = req.DueDate.ToTimePtr()
+		newDueDate := req.DueDate.ToTimePtr()
+		task.DueDate = newDueDate
+		// Also update NextDueDate if the task doesn't have completions yet
+		// (if it has completions, NextDueDate should be managed by completion logic)
+		if len(task.Completions) == 0 {
+			task.NextDueDate = newDueDate
+		}
 	}
 	if req.EstimatedCost != nil {
 		task.EstimatedCost = req.EstimatedCost
@@ -482,6 +489,27 @@ func (s *TaskService) CreateCompletion(req *requests.CreateTaskCompletionRequest
 		return nil, err
 	}
 
+	// Update next_due_date and status based on frequency
+	// - If frequency is "Once" (days = nil or 0), set next_due_date to nil
+	// - If frequency is recurring, calculate next_due_date = completion_date + frequency_days
+	//   and reset status to "Pending" so task shows in correct kanban column
+	if task.Frequency == nil || task.Frequency.Days == nil || *task.Frequency.Days == 0 {
+		// One-time task - clear next_due_date since it's completed
+		task.NextDueDate = nil
+	} else {
+		// Recurring task - calculate next due date from completion date + frequency
+		nextDue := completedAt.AddDate(0, 0, *task.Frequency.Days)
+		task.NextDueDate = &nextDue
+
+		// Reset status to "Pending" (ID=1) so task appears in upcoming/due_soon
+		// instead of staying in "In Progress" column
+		pendingStatusID := uint(1)
+		task.StatusID = &pendingStatusID
+	}
+	if err := s.taskRepo.Update(task); err != nil {
+		log.Error().Err(err).Uint("task_id", task.ID).Msg("Failed to update task after completion")
+	}
+
 	// Create images if provided
 	for _, imageURL := range req.ImageURLs {
 		if imageURL != "" {
@@ -539,15 +567,6 @@ func (s *TaskService) sendTaskCompletedNotification(task *models.Task, completio
 		completedByName = completion.CompletedBy.GetFullName()
 	}
 
-	title := "Task Completed"
-	body := fmt.Sprintf("%s completed: %s", completedByName, task.Title)
-
-	data := map[string]interface{}{
-		"task_id":       task.ID,
-		"residence_id":  task.ResidenceID,
-		"completion_id": completion.ID,
-	}
-
 	// Notify all users
 	for _, user := range users {
 		isCompleter := user.ID == completion.CompletedByID
@@ -556,13 +575,11 @@ func (s *TaskService) sendTaskCompletedNotification(task *models.Task, completio
 		if !isCompleter && s.notificationService != nil {
 			go func(userID uint) {
 				ctx := context.Background()
-				if err := s.notificationService.CreateAndSendNotification(
+				if err := s.notificationService.CreateAndSendTaskNotification(
 					ctx,
 					userID,
 					models.NotificationTaskCompleted,
-					title,
-					body,
-					data,
+					task,
 				); err != nil {
 					log.Error().Err(err).Uint("user_id", userID).Uint("task_id", task.ID).Msg("Failed to send task completion push notification")
 				}