# Transport sharpness benchmark and source-domain audit

Family 374, source revision `fd4aeeb2ee4fc729c18d98444fed42fd0529eeeb`. Revised source-informed assessment, 9 October 2026 Australia/Brisbane.

## Current decision

Prototype the exact sensitivity benchmark and a solver/model correspondence report. Pricing, usefulness and repeatable profitable delivery are unvalidated.

## Reviewed finding and application boundary

Twelve declared definitions were compared with uniform continuum source, quadratic couplings, unique optimal plans and continuous L2 map distance. No intended-model mismatch was detected at this source level. Domain hypotheses exclude degenerate normalization/infinite-distance corners; map uniqueness is almost everywhere. No trusted proof or imported dependency check was run.

The paper provides an explicit constant through radius, coordinate projection volumes and source volume. On K=Y=[-1,1]^2, C_*^2<=9464 gives the conservative rational C=98, if the source theorem is accepted. The exact polygon reference reproduces the thin three-atom construction, target distances and source-map reassignment. 131 finite checks passed. The product opportunity is sensitivity calibration; a discrete, entropic or learned map still needs its own bridge.

## Evidence extent

Selected definitions/statements and the recorded manuscript sections were inspected. This is not a full manuscript, import-closure, proof or program verification. [Source metadata](source.json), [semantic observations](../../definition-hole-review-queue-2026-10-09-v2.json), [computational review](../../../../FEASIBILITY-2026-10-09-v5.md).

## Next action

Prepare a concrete operational-claim/benchmark control, record every model bridge and numerical error, and retain the unrestricted source construction as separately queued work. No customer outreach, paid computation or deployment has occurred.