A wrapper baked its path at creation, so a reference held across a
structural mutation kept addressing its old index: unshift then a write
through a held element edited its neighbour, and a write after a splice
could produce a path the replica cannot resolve. The baseline diff this
tracker replaced was immune, because its dirty paths were only hints and
the ops came from comparing values.
A wrapper now holds a cell (parent link plus segment) and the path is
walked at use time, so renumbering an element corrects every descendant.
pop/shift/unshift/splice and length truncation shift live children by the
delta and mark removed ones dead; sort/reverse/fill/copyWithin relocate
them by identity. Renumbering iterates a set of live cells rather than the
lookup cache, which is keyed by index and can evict a child that is still
held. Writes through an element that left the document mutate it and
record nothing, as plain JS and the baseline diff both do.
One object can occupy several positions in the tree. A wrapper is now
shared per target and holds a cell per position, and a write emits an op
for each, which is what the baseline diff produced for the same shape.
Positions are registered when a path is read, when a tracked value is
assigned elsewhere, and when one is inserted by an array mutator (only the
inserted range is examined; scanning the array made every structural
mutation O(n)). A blocked view of an object gets its own wrapper so the
reserved-key guard cannot be bypassed through a safe alias.
Paths are cached per cell against a counter that only structural mutation
bumps, and the per-write cell walk is skipped until a document actually
aliases something.
Keep protocol payloads transport-opaque and validate service calls, state snapshots, updates, and errors at Chord boundaries. Ensure successful OpenAI Responses messages remain strict JSON so terminal Transcript updates reach clients.
Bundle declarative plugin packages with Chord and load fresh generations. Scope client selections to persisted Session and TUI branches, and replace stale local server generations after protocol changes.
Bundle content-addressed Chord facet entries, distribute server-selected presentation artifacts during the handshake, and reload Session and TUI generations through /reload.
Deliver observed services as ordinary typed proxies, expose optional instance-key lookup, and rename the deferred multi-instance capability to ServiceSpawner.
Move service, replicated-state, facet host, and loader ownership into the standalone Chord package. Migrate consumers and leave runtime JSON enforcement to serializers.
