feat: add Apple jobs crawler and implement duplicate-prevention logic for target loading

internal/db/targets_loader.go

@@ -28,20 +28,23 @@ func (db *DB) LoadTargetsFromYAML(filepath string) error {
 		return fmt.Errorf("could not parse target config: %w", err)
 	}
 
-	// Check if we already have targets
-	targets, err := db.GetAllTargets()
+	// Get existing targets to prevent duplicates
+	existingTargets, err := db.GetAllTargets()
 	if err != nil {
 		return err
 	}
-	if len(targets) > 0 {
-		// Do not overwrite existing targets
-		return nil
+	
+	existingURLs := make(map[string]bool)
+	for _, t := range existingTargets {
+		existingURLs[t.TargetURL] = true
 	}
 
 	for _, t := range config.Targets {
-		_, err := db.CreateTarget(t.Name, t.TargetURL, t.Platform)
-		if err != nil {
-			return fmt.Errorf("failed to insert target %s: %w", t.Name, err)
+		if !existingURLs[t.TargetURL] {
+			_, err := db.CreateTarget(t.Name, t.TargetURL, t.Platform)
+			if err != nil {
+				return fmt.Errorf("failed to insert target %s: %w", t.Name, err)
+			}
 		}
 	}
 	return nil