AbstractFlow v0.3.13

Added

• Native Generate Music authoring against the released Runtime/Gateway media contract, including Gateway music catalog selectors, music residency targeting, and advanced music controls.
• Image edit/image-to-image node templates and controls aligned with Gateway's generated media contracts.
• Gateway catalog v1 helpers that prefer canonical items envelopes while retaining legacy catalog fallbacks.
• Artifact reference primitives for text, image, voice, music, and video references in the palette.
• Artifact literal editor and built-in artifact content previews (image/audio/video) backed by Gateway artifact content endpoints.

Changed

• Apple/GPU Flow profiles now require Gateway >=0.2.18; Runtime/Core are consumed through Gateway extras instead of direct Flow dependencies.
• Generated media readiness honors Gateway's common.readiness surface summary when available while remaining compatible with legacy direct endpoint descriptors.
• Gateway proxy/model residency operations now allow long media and warmup requests without the previous short frontend/backend timeout path.

Fixed

• Removed browser-side Generate Music lowering. Old lowered flows are normalized back to native generate_music when loaded or saved.
• Python VisualFlow models now accept the new native media node types without importing Runtime/Core at package import time.
• Warm/unload authoring is Gateway-only, allows Gateway default provider/model selection, and no longer disables all media residency controls from stale per-task support flags.
• Music provider/model changes clear stale backend overrides so Stable Audio 3 and Stable Audio Open do not inherit the wrong backend.
• Media previews are modality-aware and can fetch child-run/projected artifacts without using the wrong run id.
• Run preflight now catches missing media prompts and required source artifacts before starting a run.