- 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.
- Keyed reads and writes, dynCall, and method dispatch on engine-held values route through the engine, which runs its own prototypes JS-exact
- One generic host shim carries boxed dyn functions into engine calls over the uniform thunk signature
- Nullish coalescing and optional chains unfence for every dyn value, engine-held or not
- Mixed island-vs-DOM deepStrictEqual comparisons loud-fence instead of minting a fabricated failure
- The formatter driver's support slice runs past its flatMap wall
Chris Tate