Remove daemon mode references and unused config fields

The --daemon flag, BackupInterval, FullScanInterval, MinTimeBetweenRun
config fields, and DirtyPath model were placeholders for a never-shipped
daemon mode and have been removed. Daemon mode is out of scope for 1.0.

internal/vaultik/snapshot.go

@@ -19,7 +19,6 @@ import (
 
 // SnapshotCreateOptions contains options for the snapshot create command
 type SnapshotCreateOptions struct {
-	Daemon     bool
 	Cron       bool
 	Prune      bool
 	SkipErrors bool     // Skip file read errors (log them loudly but continue)
@@ -54,12 +53,6 @@ func (v *Vaultik) CreateSnapshot(opts *SnapshotCreateOptions) error {
 		return fmt.Errorf("prune database: %w", err)
 	}
 
-	if opts.Daemon {
-		log.Info("Running in daemon mode")
-		// TODO: Implement daemon mode with inotify
-		return fmt.Errorf("daemon mode not yet implemented")
-	}
-
 	// Determine which snapshots to process
 	snapshotNames := opts.Snapshots
 	if len(snapshotNames) == 0 {