feat: Enhance configuration handling and UI for job management

- Update .gitignore to include new provider files and ensure proper tracking.
- Refactor job and config forms to support multiple configuration selections, improving user experience.
- Implement logic to handle the initialization of skipProcessedFiles with a default value.
- Add new provider form templates for better organization and management of source and destination configurations.
- Enhance tests for provider forms and job configurations to ensure robust functionality.
- Introduce nullable handling for skipProcessedFiles in the database schema and update related migrations.
- Improve error handling and validation in job creation and editing processes.

internal/db/migrations/migrations.go

@@ -14,6 +14,7 @@ func InitMigrations(db *gorm.DB) *gormigrate.Gormigrate {
 		AddSkipProcessedFilesColumn(),
 		AddMaxConcurrentTransfersColumn(),
 		AddMultiConfigSupport(),
+		UpdateSkipProcessedFilesToNullable(),
 	}
 
 	return gormigrate.New(db, gormigrate.DefaultOptions, migrations)

internal/db/migrations/update_skip_processed_files_to_nullable.go

@@ -0,0 +1,70 @@
+package migrations
+
+import (
+	"github.com/go-gormigrate/gormigrate/v2"
+	"gorm.io/gorm"
+)
+
+// UpdateSkipProcessedFilesToNullable changes the skip_processed_files column to be nullable
+func UpdateSkipProcessedFilesToNullable() *gormigrate.Migration {
+	return &gormigrate.Migration{
+		ID: "20250515_update_skip_processed_files_to_nullable",
+		Migrate: func(tx *gorm.DB) error {
+			// SQLite specific command - this would need to be adjusted for other databases
+			return tx.Exec("ALTER TABLE transfer_configs RENAME TO transfer_configs_old; " +
+				"CREATE TABLE transfer_configs (" +
+				"id INTEGER PRIMARY KEY AUTOINCREMENT, " +
+				"name VARCHAR(255) NOT NULL, " +
+				"source_type VARCHAR(255) NOT NULL, " +
+				"source_path VARCHAR(255) NOT NULL, " +
+				"source_host VARCHAR(255), " +
+				"source_port INTEGER DEFAULT 22, " +
+				"source_user VARCHAR(255), " +
+				"source_key_file VARCHAR(255), " +
+				"source_bucket VARCHAR(255), " +
+				"source_region VARCHAR(255), " +
+				"source_access_key VARCHAR(255), " +
+				"source_endpoint VARCHAR(255), " +
+				"source_share VARCHAR(255), " +
+				"source_domain VARCHAR(255), " +
+				"source_passive_mode BOOLEAN DEFAULT true, " +
+				"source_client_id VARCHAR(255), " +
+				"source_drive_id VARCHAR(255), " +
+				"source_team_drive VARCHAR(255), " +
+				"file_pattern VARCHAR(255) DEFAULT '*', " +
+				"output_pattern VARCHAR(255), " +
+				"destination_type VARCHAR(255) NOT NULL, " +
+				"destination_path VARCHAR(255) NOT NULL, " +
+				"dest_host VARCHAR(255), " +
+				"dest_port INTEGER DEFAULT 22, " +
+				"dest_user VARCHAR(255), " +
+				"dest_key_file VARCHAR(255), " +
+				"dest_bucket VARCHAR(255), " +
+				"dest_region VARCHAR(255), " +
+				"dest_access_key VARCHAR(255), " +
+				"dest_endpoint VARCHAR(255), " +
+				"dest_share VARCHAR(255), " +
+				"dest_domain VARCHAR(255), " +
+				"dest_passive_mode BOOLEAN DEFAULT true, " +
+				"dest_client_id VARCHAR(255), " +
+				"dest_drive_id VARCHAR(255), " +
+				"dest_team_drive VARCHAR(255), " +
+				"archive_path VARCHAR(255), " +
+				"archive_enabled BOOLEAN DEFAULT false, " +
+				"rclone_flags VARCHAR(255), " +
+				"delete_after_transfer BOOLEAN DEFAULT false, " +
+				"skip_processed_files BOOLEAN DEFAULT true, " + // Keep as BOOLEAN, but now it's nullable
+				"max_concurrent_transfers INTEGER DEFAULT 4, " +
+				"created_by INTEGER, " +
+				"created_at DATETIME, " +
+				"updated_at DATETIME" +
+				"); " +
+				"INSERT INTO transfer_configs SELECT * FROM transfer_configs_old; " +
+				"DROP TABLE transfer_configs_old;").Error
+		},
+		Rollback: func(tx *gorm.DB) error {
+			// No need to rollback as the data structure remains compatible
+			return nil
+		},
+	}
+}