drift-trio-scenarios S4/S5 flaked 4× across this week's CI runs (three wasm
instances + full-suite load on the runner) while passing 77/78 locally under
stress — and the one local miss carried zero guard beacons, i.e. the same
under-load convergence shortfall, not a code path. Same treatment as the
follow spec: condition-based polls keep their shape, windows grow to what a
starved box actually needs (inline S4/S5 polls 20s→60s, waitAllContain
30s→90s, settleConverged 30s→90s). Local convergence stays ~1s.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019SE4o46Lnq3hF574FFq8x4
runOnFiber now runs bodies strictly one-at-a-time through a park-safe FIFO
(collab_common.h): the per-body fire-and-forget coroutine interleaved under
load — an asyncify park inside commit.Push let the event loop start the next
body, so a local commit and a remote apply ran interleaved on shared state
(s_applyingRemote is one global), silently losing applies on the actively-
editing receiver (fuzz finding #10a; B now fuzzes clean; 39-test suite green).
kicadCollabFiberBusy embind probe (merged + standalone registrations): a
bare-embind-stack scratch save during a parked fiber mis-dispatches (table
index OOB) — trio.ts modelText/drift and production drift-detect now defer
while fiber work is in flight (#10b hardening; the trap's root cause is still
open and needs a symbolized stack — fuzz stays fixme'd).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01G5cAM9M6q34n5X4dbrfVvi
drift-trio-scenarios.spec.ts: disjoint ping-pong, same-item interleave (no
settle between bursts), conflict pairs (move-vs-delete / value-vs-value /
move-vs-move — winner is CRDT policy, asserted only as convergence + drift
silence), undo storm, 12-edit burst churn, late-joiner adopt, and Ctrl+S mid
peer burst; per-tool adapters, marker-waits before every sweep (finding #7).
S4 exposed finding #9: mutation hooks resolved item pointers at call time and
committed later on the fiber — a remote remove in between frees the pointer
(doApplyItems) and the commit resurrects the deleted item. Phase-B mutation
hooks now re-resolve by uuid ON the fiber; a vanished item makes the mutation
lose silently. applyDeltaToY's concurrent update/delete verified coherent
(full resurrect or full remove) — no shared change needed. trio.ts: TabSet
oracles + exported startV2 for duo/late-join composition.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01G5cAM9M6q34n5X4dbrfVvi
17 kicadCollabTest* action primitives (eeschema: wire/junction/no-connect/
label/symbol/move/mirror/duplicate; pcbnew: track/via/text/zone/flip/
footprint-field/lock/move/duplicate), each a real SCH_/BOARD_COMMIT on the
fiber so the listener → flushDiff emit runs as for UI edits; tool-unique
names, merged-image safe. Fixes surfaced by the catalogs (0008 §10 #4–#8):
eeschema adds SetParent before staging (Push silently skips listener
notifications for unparented items), and pcbnew blobForItem now Formats
non-footprints with the FILE writer + wrapInBoardEnvelope — SaveSelection's
transfer copy cleared the locked flag, so (locked yes) never reached the doc.
drift-trio.spec.ts gains full A/B-alternating catalogs with per-step landed
gate + oracle sweep. Bumps kicad for the Duplicate child-uuid re-roll.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01G5cAM9M6q34n5X4dbrfVvi
