feat(reports): leftover-map item complete-case coverage on graphic display (v2.39.0)

AGENTS.md

@@ -273,7 +273,7 @@ stops startup instead of leaving a healthy-looking partial schema, and
 application code must not compensate for a missing table.
 
 Period leftover pairs (ADR 0017 / 0018 / 0048 / 0049 / 0119 / 0158 / 0162 /
-0163 / 0164 / 0182 / 0185 / 0201 / 0233 / 0266 / 0267 / 0268 / 0269 / 0270 / 0271 / 0272 / 0273 / 0274 / 0275 / 0276 / 0277 / 0278 / 0279 / 0280 / 0281) are computed in `lineageweave/leftover_pairs.py` from the
+0163 / 0164 / 0182 / 0185 / 0201 / 0233 / 0266 / 0267 / 0268 / 0269 / 0270 / 0271 / 0272 / 0273 / 0274 / 0275 / 0276 / 0277 / 0278 / 0279 / 0280 / 0281 / 0282) are computed in `lineageweave/leftover_pairs.py` from the
 residual after a real GRM/GPCM score, never invented. Distances are
 Euclidean on the two-dimensional Gabriel leftover map; missing cells stay
 out of the factorization. Closest and farthest post–criterion pairs
@@ -342,7 +342,13 @@ captions the leftover-map graphic display with persisted leftover-map
 complete-case coverage so the pair-list `used N of M scored posts` note
 matches the plot; a missing, non-integer, negative-used, non-positive-scored,
 or used-greater-than-scored coverage omits that leftover-map coverage caption
-and does not invent coverage from plotted marker count. When `R`, `R̂`, `U`, `x`,
+and does not invent coverage from plotted marker count. ADR 0282 captions the
+leftover-map graphic display with persisted leftover-map item complete-case
+coverage so two criterion diamonds are not read as the scored-criterion census;
+a missing, non-integer, negative-used, non-positive-scored, or
+used-greater-than-scored item coverage omits that leftover-map item coverage
+caption and does not invent item coverage from plotted criterion marker count.
+When `R`, `R̂`, `U`, `x`,
 `s`, and `e` are finite, `e + s + x = 1`. When `Y`, `E`, and `R` are
 finite, `Y − E = R`. When `R`, `R̂`, and `U` are
 finite, `U + R̂ = R`. When coordinates,
@@ -354,7 +360,9 @@ residual SVD axes 1 and 2 and persists to `report_leftover_map_axis`.
 Rank-0 residuals emit two zero-share axes; the shares are report-level
 and are not a leftover score. Complete-case coverage (ADR 0168) persists to
 `report_leftover_map_coverage` and captions the pair list and the leftover-map
-graphic with how many scored posts entered the map.
+graphic with how many scored posts entered the map. Item complete-case coverage
+(ADR 0282) captions the leftover-map graphic with how many scored criteria
+entered the map.
 
 Authorized occupational construct catalog search (ADR 0257) matches official
 O*NET preferred labels or descriptions only when a source-eligible, ABAC-visible

ARCHITECTURE.md

@@ -637,7 +637,7 @@ information at the group's mean θ (Lord, 1980 max-info CAT). Rankings
 persist to `report_item_information`. After those IRT main effects,
 residual SVD leftover pairs on two Gabriel axes (Jeon et al., 2021;
 ADR 0017 / 0048 / 0049 / 0119 / 0148 / 0158 / 0162 / 0163 / 0164 / 0168 /
-0182 / 0185 / 0201 / 0233 / 0266 / 0267 / 0268 / 0269 / 0270 / 0271 / 0272 / 0273 / 0274 / 0275 / 0276 / 0277 / 0278 / 0279 / 0280 / 0281) persist to `report_leftover_pair` with signed residual `R`,
+0182 / 0185 / 0201 / 0233 / 0266 / 0267 / 0268 / 0269 / 0270 / 0271 / 0272 / 0273 / 0274 / 0275 / 0276 / 0277 / 0278 / 0279 / 0280 / 0281 / 0282) persist to `report_leftover_pair` with signed residual `R`,
 observed `Y`, expected `E[Y|θ, item]`, full leftover-map rank, unexplained
 leftover, ADR 0201 reconstruction evidence, ADR 0185 cross-share evidence,
 ADR 0233 unexplained leftover share `s`, ADR 0266 explained leftover
@@ -659,13 +659,15 @@ residual `R`. ADR 0278 captions leftover-map pair segments with persisted leftov
 observed `Y`. ADR 0279 captions leftover-map pair segments with persisted leftover
 expected `E`. ADR 0280 captions leftover-map pair segments with persisted leftover-map
 rank. ADR 0281 captions the leftover-map graphic display with persisted leftover-map
-complete-case coverage. Click a post marker or a pair button
+complete-case coverage. ADR 0282 captions the leftover-map graphic display with
+persisted leftover-map item complete-case coverage. Click a post marker or a pair button
 opens that post. Those ADRs are the normative mathematical, storage, and
 display contracts. Leftover-map axis share
 (Gabriel inertia of residual SVD axes 1 and 2; ADR 0148) persists to
 `report_leftover_map_axis`. Complete-case leftover-map coverage (ADR
 0168) persists to `report_leftover_map_coverage` so readers see how
-many scored posts entered the factorization, including on the graphic. Results persist to
+many scored posts entered the factorization, including on the graphic,
+and how many scored criteria entered the factorization on the graphic. Results persist to
 `report_period_score` / `report_member_score`.
 `GET /api/reports/{grouping}` lists the trend;
 `GET /api/reports/{grouping}/{period}` is ABAC-filtered;

CHANGELOG.d/2.39.0-leftover-map-plot-item-coverage.md

@@ -0,0 +1,24 @@
+## 2.39.0 — Leftover-map item complete-case coverage on the graphic display
+
+- Caption the leftover-map graphic display with persisted leftover-map
+  item complete-case coverage (ADR 0282). After `make seed`, closest and
+  farthest leftover pairs sit above the member list with the Gabriel biplot
+  of already-named coordinates, leftover-map axis share when finite, axis
+  ticks that match `ξ (x, y) ζ (x, y)` on the pair row, pair segments
+  that match `d` on the pair row, pair segments that match `R̂` on the
+  pair row, pair segments that match `R̂²/R²` on the pair row, pair
+  segments that match `U²/R²` on the pair row, pair segments that match
+  `2R̂U/R²` on the pair row, pair segments that match `U` on the pair
+  row, pair segments that match `R` on the pair row, pair segments that
+  match `Y` on the pair row, pair segments that match `E` on the pair
+  row, pair segments that match leftover-map rank on the pair row, a plot
+  caption that matches leftover-map complete-case coverage above the pair
+  list, and a plot caption that matches leftover-map item complete-case
+  coverage; click a post marker or a pair button opens that post.
+  A missing, non-integer, negative-used, non-positive-scored, or
+  used-greater-than-scored item coverage omits that leftover-map item
+  coverage caption. Coverage `0 of M` is shown when that persisted used
+  count is a non-negative integer. Do not invent item coverage from
+  plotted criterion marker count, leftover-map distance, leftover-map
+  rank, leftover-map post coverage, or the count of unused axes. Never
+  invent a leftover score. Never invent a theta. No new columns.

CHANGELOG.md

@@ -8,6 +8,30 @@ All notable changes to this project are documented here. Format follows
 
 ### Added
 
+- Period leftover pairs now caption the leftover-map graphic display with
+  persisted leftover-map item complete-case coverage (ADR 0282 / v2.39.0). After
+  `make seed`, closest and farthest leftover pairs sit above the member
+  list with the Gabriel biplot of already-named coordinates, leftover-map
+  axis share when finite, axis ticks that match `ξ (x, y) ζ (x, y)` on
+  the pair row, pair segments that match `d` on the pair row, pair
+  segments that match `R̂` on the pair row, pair segments that match
+  `R̂²/R²` on the pair row, pair segments that match `U²/R²` on the pair
+  row, pair segments that match `2R̂U/R²` on the pair row, pair segments
+  that match `U` on the pair row, pair segments that match `R` on the
+  pair row, pair segments that match `Y` on the pair row, pair segments
+  that match `E` on the pair row, pair segments that match leftover-map
+  rank on the pair row, a plot caption that matches leftover-map
+  complete-case coverage above the pair list, and a plot caption that
+  matches leftover-map item complete-case coverage; click a post marker
+  or a pair button opens that post. A missing, non-integer, negative-used,
+  non-positive-scored, or used-greater-than-scored item coverage omits
+  that leftover-map item coverage caption. Coverage `0 of M` is shown
+  when that persisted used count is a non-negative integer. Do not invent
+  item coverage from plotted criterion marker count, leftover-map
+  distance, leftover-map rank, leftover-map post coverage, or the count
+  of unused axes. Never invent a leftover score or a theta. No new
+  columns.
+
 - Period leftover pairs now caption the leftover-map graphic display with
   persisted leftover-map complete-case coverage (ADR 0281 / v2.38.0). After
   `make seed`, closest and farthest leftover pairs sit above the member

CLAUDE.md

@@ -49,7 +49,7 @@ cutoff. Global Ask optional `knowledge_cutoff` uses the same cover
 
 Create/start endpoint rules (ADR 0017 / 0021), tie-vs-miss similarity
 (ADR 0026), R&R catalog ids (ADR 0019 / 0027), leftover pairs
-(ADR 0048–0164 / 0182 / 0185 / 0201 / 0233 / 0266 / 0267 / 0268 / 0269 / 0270 / 0271 / 0272 / 0273 / 0274 / 0275 / 0276 / 0277 / 0278 / 0279 / 0280 / 0281), occupational construct catalog search
+(ADR 0048–0164 / 0182 / 0185 / 0201 / 0233 / 0266 / 0267 / 0268 / 0269 / 0270 / 0271 / 0272 / 0273 / 0274 / 0275 / 0276 / 0277 / 0278 / 0279 / 0280 / 0281 / 0282), occupational construct catalog search
 (ADR 0257), the text-channel embedding swap and cosine
 clamp (ADR 0190), per-edge channel-score persistence (ADR 0195),
 token-backed status notices (ADR 0220),

docs/adr/0282-leftover-map-plot-item-coverage.md

@@ -0,0 +1,159 @@
+# ADR 0282 — Name leftover-map item complete-case coverage on the graphic display
+
+**Decision status:** Accepted
+**Date:** 2026-08-30
+
+Amends [ADR 0268](0268-leftover-map-graphic-display.md),
+[ADR 0049](0049-leftover-pair-report-ui.md), and leftover-map complete-case
+coverage ([ADR 0168](0168-leftover-map-complete-case-coverage.md)). Independent of
+leftover-map complete-case coverage on the graphic display
+([ADR 0281](0281-leftover-map-plot-coverage.md)), leftover-map rank on pair
+segments ([ADR 0280](0280-leftover-map-segment-rank.md)), leftover expected on pair
+segments ([ADR 0279](0279-leftover-map-segment-expected.md)), leftover observed on
+pair segments ([ADR 0278](0278-leftover-map-segment-observed.md)), leftover
+residual on pair segments ([ADR 0277](0277-leftover-map-segment-residual.md)),
+leftover-map unexplained leftover on pair segments
+([ADR 0276](0276-leftover-map-segment-unexplained-leftover.md)), leftover-map
+cross share on pair segments ([ADR 0275](0275-leftover-map-segment-cross-share.md)),
+leftover-map unexplained leftover share on pair segments
+([ADR 0274](0274-leftover-map-segment-unexplained-share.md)), leftover-map
+explained leftover share on pair segments
+([ADR 0273](0273-leftover-map-segment-explained-share.md)), leftover-map
+reconstruction on pair segments
+([ADR 0272](0272-leftover-map-segment-reconstruction.md)), leftover-map
+distance on pair segments ([ADR 0271](0271-leftover-map-segment-distance.md)),
+leftover-map coordinate ticks ([ADR 0270](0270-leftover-map-coordinate-ticks.md)),
+leftover-map axis share on the graphic display
+([ADR 0269](0269-leftover-map-axis-share-plot.md)), leftover residual
+disclosure ([ADR 0162](0162-leftover-residual-disclosure.md)), leftover
+observed `Y` / expected `E` ([ADR 0163](0163-leftover-observed-expected.md)),
+leftover-map explained leftover share persistence
+([ADR 0266](0266-leftover-map-explained-share.md)), leftover-map
+unexplained leftover share persistence
+([ADR 0233](0233-leftover-map-unexplained-share.md)), leftover-map
+reconstruction persistence ([ADR 0201](0201-leftover-map-reconstruction.md)),
+leftover-map cross share persistence
+([ADR 0185](0185-leftover-map-cross-share.md)), leftover-map unexplained leftover
+persistence ([ADR 0182](0182-leftover-map-unexplained.md)), leftover-map rank
+persistence ([ADR 0164](0164-leftover-map-rank.md)), and leftover-map axis
+share persistence ([ADR 0148](0148-leftover-map-axis-share.md)).
+
+## Context
+
+ADR 0168 already persists `map_item_count` / `scored_item_count` on
+`report_leftover_map_coverage`. ADR 0281 already names persisted leftover-map
+post complete-case coverage on the leftover-map graphic display. The graphic
+still has no item coverage caption, so a buyer who reads two criterion
+diamonds can treat those markers as the scored-criterion census even after
+the pair-list note names post coverage. Incomplete columns are dropped from
+Gabriel factorization; hiding item coverage on the plot lets a sparse
+criterion with one missing post vanish without a next action.
+
+This increment names leftover-map item complete-case coverage on the
+leftover-map graphic display. It does not add columns. It does not recompute
+item coverage from plotted criterion marker count, leftover-map distance, or
+leftover-map rank. It does not persist leftover-map inner product, cosine, or
+length as separate columns. It does not land Post quality on the leftover
+criterion. Leftover-map distance stays two-axis Euclidean. Do not invent a
+leftover score. Do not invent a theta.
+
+The dashboard stack already used neighbouring leftover facts under other
+numbers. This protected increment uses **0282** so it does not collide with
+leftover-map complete-case coverage on the graphic display (0281), leftover-map
+rank on pair segments (0280), leftover expected on pair segments (0279), leftover
+observed on pair segments (0278), leftover residual on pair segments (0277),
+leftover-map unexplained leftover on pair segments (0276), leftover-map cross
+share on pair segments (0275), leftover-map unexplained leftover share on pair
+segments (0274), leftover-map explained leftover share on pair segments (0273),
+leftover-map reconstruction on pair segments (0272), leftover-map distance on
+pair segments (0271), leftover-map coordinate ticks (0270), leftover-map axis
+share on the graphic display (0269), leftover-map graphic display (0268),
+leftover-map coordinates (0267 / migration 0245), leftover-map explained leftover
+share persistence (0266 / migration 0244), leftover-map unexplained leftover
+share persistence (0233 / migration 0233), leftover-map reconstruction
+persistence (0201 / migration 0206), leftover-map cross share persistence (0185),
+leftover-map unexplained leftover persistence (0182), leftover residual
+disclosure (0162), leftover observed `Y` / expected `E` persistence (0163),
+leftover-map rank persistence (0164), leftover coverage persistence (0168),
+two-axis leftover-map distance persistence, leftover-map axis share persistence
+(0148), leftover interaction-map persistence, occupational construct catalog
+search (0265), or the dashboard stacks.
+
+## Decision
+
+On the leftover-map graphic display, caption persisted leftover-map item
+complete-case coverage as `Leftover map used N of M scored criteria
+(complete-case)`, using the persisted `map_item_count` / `scored_item_count`
+integers. A missing coverage row, a non-integer count, a negative used count,
+a non-positive scored count, or used greater than scored omits that leftover-map
+item coverage caption and keeps the connecting lines and any leftover-map
+distance, reconstruction, explained leftover share, unexplained leftover share,
+leftover-map cross share, unexplained leftover, leftover residual, leftover
+observed, leftover expected, leftover-map rank, or leftover-map post coverage
+caption. Coverage `0 of M` is shown when that persisted used count is a
+non-negative integer and scored is a positive integer. Do not invent item
+coverage from plotted criterion marker count, leftover-map distance,
+leftover-map rank, leftover-map post coverage, or the count of unused axes.
+Click a post marker to open that post. Criterion markers are not post buttons.
+The grouping comparison strip (ADR 0149) stays on its reduced leftover payload
+and does not gain this leftover-map item coverage caption. The pair-list note
+(ADR 0168) stays post coverage.
+
+Do not add SQL. Do not edit shipped migrations. Do not persist inner
+product, cosine, or length as separate columns. Do not invent a leftover
+score. Do not invent a theta.
+
+## Consequences
+
+After `make seed`, closest and farthest leftover pairs sit above the member
+list with the leftover-map graphic display of persisted `ξ` and `ζ`,
+leftover-map axes name persisted Gabriel inertia share when finite,
+leftover-map axis ticks name the same coordinates shown on the pair row,
+pair segments name persisted leftover-map distance `d`, persisted leftover-map
+reconstruction `R̂`, persisted leftover-map explained leftover share `e`,
+persisted leftover-map unexplained leftover share `s`, persisted leftover-map
+cross share `x`, persisted leftover-map unexplained leftover `U`, persisted
+leftover residual `R`, persisted leftover observed `Y`, persisted leftover
+expected `E`, persisted leftover-map rank, the plot names persisted leftover-map
+complete-case coverage, and the plot names persisted leftover-map item
+complete-case coverage; click a post marker or a pair button opens that post.
+Hidden posts stay hidden. Rank-0 unused axes still plot at the origin and still
+name item coverage when that coverage is persisted.
+
+## Related
+
+Independent of leftover interaction-map persistence, leftover-criterion
+evaluation landing, leftover residual disclosure, leftover-map
+complete-case coverage persistence, leftover-map axis share persistence,
+leftover pairs on the grouping comparison strip, two-axis leftover-map
+distance persistence, leftover-map rank persistence, leftover-map inner
+product, leftover-map cosine, leftover-map length, leftover-map
+reconstruction persistence, leftover-map unexplained leftover persistence,
+leftover-map cross share persistence, leftover-map unexplained leftover
+share persistence, leftover-map explained leftover share persistence,
+leftover-map coordinate persistence, leftover-map graphic display,
+leftover-map axis share on the graphic display, leftover-map coordinate
+ticks, leftover-map distance on pair segments, leftover-map reconstruction
+on pair segments, leftover-map explained leftover share on pair segments,
+leftover-map unexplained leftover share on pair segments, leftover-map
+cross share on pair segments, leftover-map unexplained leftover on pair
+segments, leftover residual on pair segments, leftover observed on pair
+segments, leftover expected on pair segments, leftover-map rank on pair
+segments, and leftover-map complete-case coverage on the graphic display.
+
+## References
+
+Gabriel, K. R. (1971). The biplot graphic display of matrices with
+application to principal component analysis. *Biometrika, 58*(3),
+453–467. https://doi.org/10.1093/biomet/58.3.453
+
+Jeon, M., Jin, I. H., Schweinberger, M., & Baugh, S. (2021). Mapping
+unobserved item–respondent interactions: A latent space item response
+model with interaction map. *Psychometrika, 86*(2), 378–403.
+https://doi.org/10.1007/s11336-021-09762-5
+(LSIRM interaction `−γ‖ξ_j − ζ_i‖` after main effects
+`α_j − β_i`; typically `p = 2` for the interaction map. Gabriel
+reconstruction of the leftover cell is the two-axis inner product
+`R̂ = ξ_{1:2} · ζ_{1:2}`. Incomplete columns are dropped from the
+complete-case residual rectangle; item coverage names how many scored
+criteria entered that factorization.)