feat(reports): leftover expected on grouping comparison graphic (v2.74.0)

[seonghobae]

Summary

Caption persisted leftover expected E on the grouping comparison leftover-map graphic (ADR 0317 / v2.74.0) without inventing scores or new columns. The comparison accessible name stays distinct from period-report and strip copy; missing/non-finite E omits only this caption. Finite negative E remains visible.

Current stack authority

• Live base is now feat(reports): leftover observed on grouping comparison graphic (v2.73.0) #856 @ 974109a055573e3534f4e653fc9929ffad1ac8d8 after feat(reports): leftover observed on grouping comparison graphic (v2.73.0) #856 gained its own realistic governance RED for premature ADR 0316 acceptance.
• Current feat(reports): leftover expected on grouping comparison graphic (v2.74.0) #857 product head remains 549441180e713aba5c4199efc15a44f1c3c11a29; exact compare to the moved parent is now diverged, ahead 3 / behind 1, with merge base the previous feat(reports): leftover observed on grouping comparison graphic (v2.73.0) #856 head dbb30794bdf5af1ae85f2e9e1ea39ba434e9bd14.
• Review 5124088708 separately found ADR 0317 prematurely Accepted. tests/test_adr_0317_governance.py is an intentional RED requiring Proposed while Draft.

Foundation ordering

The previous #857 repair staging automation/857-adr-status-repair-20260906@76f01f7b7dfa8e37e78c66241f1dee7bc2a8f0d3 / run 34011167801 started from the old #856 parent and is now stale even if it later turns GREEN. Do not promote that tree.

First finish and promote #856's causal ADR0316 repair. Then reconstruct #857 non-force on that exact repaired parent, preserving the expected-caption delta plus #857 governance regression, repair ADR0317 to Proposed in the reconstructed tree, and regenerate tests/evidence. Direct descendant #858 remains downstream of #857; its reconstruction must wait for this foundation chain.

Keep Draft. Do not force-push, self-approve, weaken gates, transfer predecessor GREEN, or choose either divergent tree wholesale.

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[seonghobae]

Exact head 9f34d2c stacked on #856 @ c7a8680. Comparison graphic leftover expected uses leftover map comparison graphic leftover expected {label} so it stays distinct from hyphen leftover expected {label} and strip Leftover map comparison expected. Independent APPROVE required on this leftover-expected increment before squash-merge. Do not self-approve. Do not squash-merge onto the unprotected leftover base. Issues #79 and #87 stay open. Next buyer increment is leftover-map rank on this comparison graphic (ADR 0318 / v2.75.0), stacked here — not mixed into #74/#92.

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.

[seonghobae]

Cycle 2026-08-31 08:19 KST: exact head 9f34d2c (v2.74.0 / ADR 0317 leftover expected on grouping comparison leftover-map graphic). Stacked on #856. Independent APPROVE still required. Do not self-approve. Do not squash-merge onto the unprotected leftover base. Issues #79 and #87 stay open. Next buyer increment: leftover-map rank on this comparison graphic (ADR 0318 / v2.75.0).

[seonghobae]

Rebased onto #856 @ cf3b6d4 after the leftover observed a11y rename. Head is now ade9ed5.

Comparison-graphic leftover expected uses distinct accessible name leftover map comparison graphic leftover expected {label} (same leftover-qualifier pattern as residual and observed). Vietnamese copy names the leftover map. Local oxlint 0; 511 tests passed (App 103, LeftoverMapPlot 58, leftoverMapPlotLayout 59, i18n 276, leftoverObservedExpected 10, leftoverResidual 5).

Leave open for independent review. Do not self-approve. Do not squash-merge without independent APPROVE + exact-head required success. Next buyer increment after this residual: leftover-map rank on the comparison graphic (ADR 0318 / v2.75.0).

[seonghobae]

Independent APPROVE still required on this leftover-expected head 9f34d2c (v2.74.0). #858 leftover-map rank (v2.75.0) is stacked here at 4b9184f. Do not self-approve. Do not squash-merge onto the unprotected leftover base. Issues #79 and #87 stay open.

[seonghobae]

Current-head repair finding: ADR 0317 is introduced by this still-Draft PR as Decision status: Accepted. That overstates decision authority before independent review/normal merge. Keep the product/UI delta, but make ADR 0317 Proposed on this branch and add an executable regression that prevents the Draft decision from silently returning to Accepted. Also refresh the Stack authority: the live base is #856 at dbb30794bdf5af1ae85f2e9e1ea39ba434e9bd14 and the live head is 2c256e58e08b082b7936b99f3d1481f2f3bc833e, not the older SHAs in the body. Do not force-push or weaken gates.