Spectrum MiniMax H3 v0.1.6

Spectrum MiniMax H3 v0.1.6

Restores Spectrum on current ComfyUI after the native MiniMax H3 ModelSamplingAV update and makes native cache conflicts fail safe.

Fixed

• Remove time_shift_slope from the unconditional native-helper requirement after ComfyUI removed it in bdcb886a.
• Match both native MiniMax H3 audio-velocity contracts: derivative-scaled output on the original core and raw _forward output when ModelSamplingAV performs the schedule conversion outside Spectrum's wrapper boundary.
• Detect native EasyCache or LazyCache on the same model branch before opening a Spectrum transaction. Spectrum remains inactive for that run and the cache continues normally, avoiding Spectrum H3 solver step completed without an H3 model call.

Validation

• Add an exact reconstruction test that feeds a captured native final-block feature through the forecast output path and compares both video and audio velocity with native _forward.
• Run native-equivalence CI against the original H3 integration commit and current ComfyUI commit 0dd9b154a1654fc699dcdc3af066c7cce096045a.
• Add regression coverage proving EasyCache/LazyCache presence bypasses Spectrum without starting or advancing runtime state.
• Validate the full CPU suite locally on both sides of the upstream ModelSamplingAV change: 80 passed and one CUDA-only equivalence test skipped on each core.

Documentation

• Document the supported native contract range and the mutual exclusion between Spectrum and native EasyCache/LazyCache on one model branch.

Scope

The automated native tests use tiny CPU fixtures. Contributor testing reported four successful full MiniMax H3 generations with the ComfyUI compatibility patch on an AMD Radeon AI PRO R9700 / ROCm system. Exact-seed full-checkpoint A/B validation of the new ComfyUI audio path remains outstanding.