The live-rename interlude routed label changes through a fresh
snapshot object, which flowed setData -> geometry rebuild - and the
rebuild treats the last-fetched position ledger as authoritative and
cancels any pending drag commit, so a rename visibly rewound the
whole graph whenever display had drifted (recent drag, mid-anneal,
physics re-anneal).
- Renderer gains setClusterLabels (a setPhysicsTuning sibling): pure
applyClusterLabels patches the data-side cluster records and the
built region meta (re-wrapping the changed entries with the same
measure the build uses), markDirty only. Never touches nodes, the
sim, positions, or the pending commit. The hull-silence guard
travels inside it: a null-label cluster is a gone record - no
rename can reach it.
- The lh:chat-renamed listener stops building snapshot objects:
renameSessionsPatch writes the sessions entry in place (pure
display state - the detail card's provenance line), the cluster
label goes through the new channel, and a tick bump re-renders the
view. Identity preserved everywhere -> the [snapshot]-keyed
setData feed cannot fire.
- Hygiene (a): a fresh sim starts at alpha 1 and never decays while
stopped - the first post-rebuild drag re-annealed the whole graph
at full strength. buildSim now initializes alpha at the settle
floor, so first-drag matches steady-state drag. setPhysicsTuning
still rehearses alpha(1) when a full re-anneal is the point.
- Hygiene (b): nodes missing from the position ledger used to dump
at (0,0) via the ?? 0 fallback. seedMissingNodePositions seeds
them on a deterministic ring around the known positions' centroid
(FNV-1a hashed angle, golden-angle spiral offset).
- Hygiene (c) is store-band (writePositionMap's writeFileSync ->
tmp+rename): flagged for Platform, not crossed.
Tests: applyClusterLabels suite (patch + re-wrap, hull silence,
no-op, explicit null, unknown ids), renameSessionsPatch identity
pins (sessions map and clusters array identity preserved - the
contract that keeps setData from firing), seedMissingNodePositions
determinism + ring math. Live-verified: mid-anneal rename shows a
4-world-unit max disc jump (no teleport), the commit PUT survives
the rename, rest renames leave the disc build byte-identical, and a
held first drag displaces discs ~14 units instead of re-forming the
graph.
amosblomqvist
e826088cc8