chore: capture post-P0/P1 state for clean P2 start (working tree was dirty at task begin)

vfs/gc/gc.go

@@ -93,11 +93,6 @@ type EvictionStrategy interface {
 	Evict(vfs vfs.VFS, bytesNeeded uint) uint
 }
 
-// AdaptivePromotionDeciderFunc is a placeholder for the adaptive promotion logic
-var AdaptivePromotionDeciderFunc = func() interface{} {
-	return nil
-}
-
 // AsyncGCFS wraps a GCFS with asynchronous garbage collection capabilities
 type AsyncGCFS struct {
 	*GCFS