Bridge

MAM bridge

Where the media actually lives. /assets is the catalog surface; this bridge is the storage contract behind it.

Engines3

Google DriveAmazon S3Frame.io

Take the handoff

Cut

Path contract (JSON)
Canonical online, nearline, and archive paths for this cut.

Handoff

Out: Canonical paths per asset — online, nearline, and archive tiers named separately.
Back: Checksums and tier location, so the catalog can say where a master really is.
Archive: 3-2-1 enforced: two media types, one geo-separated copy. See docs/HARDWARE.md.
Gate: Nothing reaches cold archive without the /archive checklist complete.

Boundary law

EditForge owns project ID, rubric, and the ship decision
The engine owns pixels, GPU, and realtime playback
No silent auto-ship across this bridge