sfdp imagemap (cmapx/imap) parity dashboard

Differential survey of @knowvah/dot-engine sfdp imagemap (cmapx/imap) output vs the native dot -K sfdp oracle (test/corpus/map-walk.ts), semantic comparison per docs/conformance.md (±0.01 deterministic tolerance, ±0.5 for the iterative engines). Regenerate: npx tsx test/corpus/map-walk.ts sfdp && npx tsx test/corpus/parity-report.ts.

Summary

• Surveyed: 762
• pass: 733 (96.2%) · diverged (tracked): 0 · accepted (documented, won't-fix): 27
• errors (oracle/port/timeout, excluded from scoring): 2

Diverged (0)

(none)

Accepted (27) — documented, not chased

id	#diffs	firstDiff	reason
1447	88	area[0].coords[1]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
1447_1	590	area[0].coords[1]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
1879	2118	area[0].coords[0]	A1 sfdp chaotic drift (2026-07-24): whole-layout basin divergence on a huge graph (maxDelta 7.6kpt), the documented sfdp spring chaos regime — same class as fdp 1879 (chaos proven by perturbation A/B on the fdp family; sfdp is the measured chaotic engine).
2619_1	12	area[1].coords[0]	A1 sfdp spring drift (diagnosed 2026-07-24): 6 nodes, positional drift 0.7-1.3pt — the documented chaotic-engine regime, mildly above the 0.5 bar on a small graph. Same class as the sfdp engine track's 232-id tail.
graphs-b102	1174	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
graphs-b103	3164	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
graphs-b106	206	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
graphs-b143	45	area[0].coords[3]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
graphs-b29	415	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
graphs-root	8	area[0].coords[1]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
graphs-url	82	area[0].coords[1]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
graphs-xx	1177	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
linux.i386-b102	1174	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
linux.i386-b106	206	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
linux.i386-b29	418	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
linux.x86-html2_dot	30	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
linux.x86-root_circo	14	area[0].coords[1]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
linux.x86-root_twopi	14	area[0].coords[1]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
nshare-html2_dot	30	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
nshare-root_circo	14	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
nshare-root_twopi	14	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
share-b102	1174	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
share-b106	206	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
share-b29	417	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
windows-b102	1172	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
windows-b106	207	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.
windows-b29	418	area[0].coords[0]	layout drift inherited from the sfdp xdot engine track: id diverged there with the documented accepted mechanism; imagemap re-emits the same layout as rounded hotspot coords. Journal 2026-07-24.

Errors and timeouts (2)

id	message
2108
2222	oracle exit null

Passing ids (733) are omitted for brevity — the full roster is in map-parity-sfdp.json.