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/services/cache_service.go

@@ -168,7 +168,6 @@ const (
 	LookupKeyPrefix         = "lookup:"
 	LookupCategoriesKey     = LookupKeyPrefix + "categories"
 	LookupPrioritiesKey     = LookupKeyPrefix + "priorities"
-	LookupStatusesKey       = LookupKeyPrefix + "statuses"
 	LookupFrequenciesKey    = LookupKeyPrefix + "frequencies"
 	LookupResidenceTypesKey = LookupKeyPrefix + "residence_types"
 	LookupSpecialtiesKey    = LookupKeyPrefix + "specialties"
@@ -196,7 +195,6 @@ func (c *CacheService) InvalidateAllLookups(ctx context.Context) error {
 	keys := []string{
 		LookupCategoriesKey,
 		LookupPrioritiesKey,
-		LookupStatusesKey,
 		LookupFrequenciesKey,
 		LookupResidenceTypesKey,
 		LookupSpecialtiesKey,
@@ -239,21 +237,6 @@ func (c *CacheService) InvalidatePriorities(ctx context.Context) error {
 	return c.Delete(ctx, LookupPrioritiesKey, StaticDataKey)
 }
 
-// CacheStatuses caches task statuses
-func (c *CacheService) CacheStatuses(ctx context.Context, data interface{}) error {
-	return c.CacheLookupData(ctx, LookupStatusesKey, data)
-}
-
-// GetCachedStatuses retrieves cached task statuses
-func (c *CacheService) GetCachedStatuses(ctx context.Context, dest interface{}) error {
-	return c.GetCachedLookupData(ctx, LookupStatusesKey, dest)
-}
-
-// InvalidateStatuses removes cached task statuses
-func (c *CacheService) InvalidateStatuses(ctx context.Context) error {
-	return c.Delete(ctx, LookupStatusesKey, StaticDataKey)
-}
-
 // CacheFrequencies caches task frequencies
 func (c *CacheService) CacheFrequencies(ctx context.Context, data interface{}) error {
 	return c.CacheLookupData(ctx, LookupFrequenciesKey, data)