Own-code TIES/DARE/DELLA/breadcrumbs/task_arithmetic/linear on full LoRA deltas (drops mergekit for the GTA family), fixing the normalize strength-collapse caused by per-factor merging (1/N^2 squaring + meaningless factor-space sign vote). Merged delta refactored back to a LoRA via the existing SVD framework with energy-dynamic rank. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>