Replace status_id with in_progress boolean field

- Remove task_statuses lookup table and StatusID foreign key
- Add InProgress boolean field to Task model
- Add database migration (005_replace_status_with_in_progress)
- Update all handlers, services, and repositories
- Update admin frontend to display in_progress as checkbox/boolean
- Remove Task Statuses tab from admin lookups page
- Update tests to use InProgress instead of StatusID
- Task categorization now uses InProgress for kanban column assignment

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

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

internal/models/task.go

@@ -35,20 +35,6 @@ func (TaskPriority) TableName() string {
 	return "task_taskpriority"
 }
 
-// TaskStatus represents the task_taskstatus table
-type TaskStatus struct {
-	BaseModel
-	Name        string `gorm:"column:name;size:20;not null" json:"name"`
-	Description string `gorm:"column:description;type:text" json:"description"`
-	Color       string `gorm:"column:color;size:7" json:"color"`
-	DisplayOrder int   `gorm:"column:display_order;default:0" json:"display_order"`
-}
-
-// TableName returns the table name for GORM
-func (TaskStatus) TableName() string {
-	return "task_taskstatus"
-}
-
 // TaskFrequency represents the task_taskfrequency table
 type TaskFrequency struct {
 	BaseModel
@@ -79,11 +65,12 @@ type Task struct {
 	Category      *TaskCategory    `gorm:"foreignKey:CategoryID" json:"category,omitempty"`
 	PriorityID    *uint            `gorm:"column:priority_id;index" json:"priority_id"`
 	Priority      *TaskPriority    `gorm:"foreignKey:PriorityID" json:"priority,omitempty"`
-	StatusID      *uint            `gorm:"column:status_id;index" json:"status_id"`
-	Status        *TaskStatus      `gorm:"foreignKey:StatusID" json:"status,omitempty"`
 	FrequencyID   *uint            `gorm:"column:frequency_id;index" json:"frequency_id"`
 	Frequency     *TaskFrequency   `gorm:"foreignKey:FrequencyID" json:"frequency,omitempty"`
 
+	// In Progress flag - replaces status lookup
+	InProgress    bool             `gorm:"column:in_progress;default:false;index" json:"in_progress"`
+
 	DueDate       *time.Time       `gorm:"column:due_date;type:date;index" json:"due_date"`
 	NextDueDate   *time.Time       `gorm:"column:next_due_date;type:date;index" json:"next_due_date"` // For recurring tasks, updated after each completion
 	EstimatedCost *decimal.Decimal `gorm:"column:estimated_cost;type:decimal(10,2)" json:"estimated_cost"`