Board hygiene for merged #940 — arc entry + shipped row - #941
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#940 was substantial (real probe code + real disconfirming results + a same-PR sign/units correction round caught by codex+CodeRabbit), so it gets its own MERGED entry per the mandatory board-hygiene rule -- not covered by the termination clause (that's for hygiene-only PRs). The entry records only what changed AFTER the pre-existing RUN-results entry was drafted (unmerged-PR content composed in place per the PR-878 allowance, since it predated this PR's existence): the sign-convention fix (D = -spine(...), verified R2/B0/B1/B3-invariant offline before committing, confirmed bit-identical on the actual re-run), the units fix (c_bow is km^-1, not dimensionless -- replaced with the dimensionally valid |c_bow*P_bow| vs |D| contribution metric), and two CodeRabbit robustness fixes (per-storm try/except with an ERROR tag-file record; load_completed() before the START line). The headline finding (B0 VOID, model disconfirmed, stranded stratum structurally empty) is unchanged by either correction -- stated explicitly rather than left implicit. LATEST_STATE shipped-table row added. STATUS_BOARD's D-W6 row was already checked earlier and confirmed to state no coefficient sign -- verified again here, no change needed. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CcpLeEC3XK8Eye53GKBVvi
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Verify each finding against current code. Fix only still-valid issues, skip the
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Inline comments:
In @.claude/board/PR_ARC_INVENTORY.md:
- Around line 22-23: Preserve the mean-statistical qualifier for both
contribution summaries: update .claude/board/PR_ARC_INVENTORY.md lines 22-23 to
identify the 25% geo and 9% bow figures as mean or average values, and update
.claude/board/LATEST_STATE.md line 858 with the same qualifier or the exact
aggregation used.
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| `|c_bow·P_bow|` vs `|D|`, both in Pa/km: geo contribution ≈25 % of | ||
| `|D|`, bow contribution ≈9 % — modest, not "no weight." Two |
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🎯 Functional Correctness | 🟡 Minor | ⚡ Quick win
Preserve the statistical qualifier for the contribution metric.
Both summaries omit that the source RUN entry reports mean contribution percentages.
.claude/board/PR_ARC_INVENTORY.md#L22-L23: addmeanoron averagebefore the 25% and 9% figures..claude/board/LATEST_STATE.md#L858-L858: apply the same qualifier or state the exact aggregation used.
📍 Affects 2 files
.claude/board/PR_ARC_INVENTORY.md#L22-L23(this comment).claude/board/LATEST_STATE.md#L858-L858
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
In @.claude/board/PR_ARC_INVENTORY.md around lines 22 - 23, Preserve the
mean-statistical qualifier for both contribution summaries: update
.claude/board/PR_ARC_INVENTORY.md lines 22-23 to identify the 25% geo and 9% bow
figures as mean or average values, and update .claude/board/LATEST_STATE.md line
858 with the same qualifier or the exact aggregation used.
AdaWorldAPI
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that referenced
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Aug 12, 2026
…lifier on the 25%/9% contribution figures The source RUN entry and the committed JSON's fitted_contribution_Pa_per_km keys report MEANS over the 19 storms (mean |c_geo*P_geo| / mean |c_bow*P_bow| vs mean |D|); the #940 summary rows dropped the qualifier. PR_ARC's merged entry gets an appended dated correction line (append-only rule -- the entry merged via #941 before the finding landed, not edited in place); LATEST_STATE's living shipped-table row is fixed in place (precedent: the N-vs-n_qualifying fix on #939). Fourth instance of the same summarization defect class this week: a qualifier or operand pairing true in the source, lost in the summary. The figure itself was never wrong -- its aggregation scope went unstated. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CcpLeEC3XK8Eye53GKBVvi
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Post-merge hygiene for #940
#940 (W6: the dipole vector-sum model lands VOID by its own control, plus a same-PR sign/units correction round caught by codex + CodeRabbit) was substantial — real probe code, real disconfirming results, real fixes — so it gets its own MERGED arc entry per the mandatory board-hygiene rule.
PR_ARC_INVENTORY.md— new MERGED entry recording only what changed after the pre-existing RUN-results entry was drafted (that entry predated W6 RUN — the vector-sum dipole model is VOID by its own control, and the stranded stratum is empty for a structural reason #940's existence, composed in place per the PR-878 allowance): the sign-convention fix (D = -spine(...), verified R²/B0/B1/B3-invariant offline before committing, confirmed bit-identical on the actual re-run), the units fix (c_bowis km⁻¹ not dimensionless — replaced with the dimensionally valid|c_bow·P_bow|vs|D|metric), and two CodeRabbit robustness fixes (per-storm try/except +ERRORtag-file record; checkpoint-before-START ordering). States explicitly that the headline finding (B0 VOID, model disconfirmed, stranded stratum structurally empty) is unchanged by either correction.LATEST_STATE.md— shipped-table row for W6 RUN — the vector-sum dipole model is VOID by its own control, and the stranded stratum is empty for a structural reason #940.STATUS_BOARD.md— checked, no change needed (D-W6's row never stated a coefficient sign).Doc/board only — zero Rust, zero product code.
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