- The ratified rename rider (world-unification §7 lane 5): "DOM" collided with the browser DOM and, post-lane-1, the structure is no longer a document tree. Comments and doc prose now say "the checked-dynamic tree" for the noun and "dyn" adjectivally; runtime symbol names (scr_dyn_*), the error.domClone libCall, and the real web DOMException family are unchanged.
- The few user-facing strings carrying the nickname move with it (the structuredClone cyclic message, the dc subscriber/publish fences, two emitter ICE texts); diagnostics snapshots regenerated (96 pass). One private compiler constant (DOM_PROTO_METHOD_NAMES -> DYN_PROTO_METHOD_NAMES) rides along.
- Mechanical sweep, 142 files, comments/prose only — no behavior change.
- Spread calls build one fresh argument array with JS's left-to-right evaluation, on both backends and under --dynamic, with V8's exact non-iterable TypeError texts
- Fence lambdas inside rest arrows spell the hidden rest slot, curing an ICE the destructuring promotions exposed
- The LLVM promise.reject lowering admits dyn reasons, mirroring the C backend and the IR contract