Lock at the right granularity
Protect mutable surfaces using leases, file locks, or symbol-level ownership.
Trade-off: Fine-grained locks can reduce collisions but increase contention.
Tool / Symbol claims
SWAP
Agents claim individual functions and classes on a coordination server before editing, and get semantic diffs when peers change symbols they depend on.
The summary describes what the project says it does; inclusion is not an endorsement.