feat(reports): preserve grouping-comparison graphic delta for serialized successor

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 / 0282 / 0283 / 0284 / 0285 / 0286 / 0287 / 0288 / 0289 / 0290 / 0291 / 0292 / 0293 / 0294 / 0295 / 0296 / 0297 / 0298 / 0299 / 0300 / 0301 / 0302 / 0303) 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 / 0283 / 0284 / 0285 / 0286 / 0287 / 0288 / 0289 / 0290 / 0291 / 0292 / 0293 / 0294 / 0295 / 0296 / 0297 / 0298 / 0299 / 0300 / 0301 / 0302 / 0303 / 0304) 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
@@ -481,7 +481,13 @@ ADR 0303 returns persisted leftover-map coordinates `ξ` / `ζ` on
 compares leftover pairs can match the pair-row coordinate badge on live
 responses; a missing axis stays null and does not invent coordinates from
 leftover-map rank, leftover-map distance, leftover-map reconstruction, or
-leftover residual. The strip does not gain the leftover-map graphic.
+leftover residual. ADR 0304 draws the leftover-map graphic display of those
+already-named `ξ` / `ζ` coordinates above grouping comparison leftover-pair
+buttons when four leftover-map axes are finite; a missing or non-finite axis
+omits that pair from the comparison graphic and does not invent coordinates
+from leftover-map rank, leftover-map distance, leftover-map reconstruction, or
+leftover residual. Omit the comparison graphic when no leftover pair has four
+finite leftover-map coordinates.
 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
@@ -526,6 +532,9 @@ Grouping comparison leftover-map coordinates (ADR 0302) captions grouping compar
 buttons with persisted leftover-map coordinates `ξ` / `ζ`.
 Grouping comparison leftover-map coordinates payload (ADR 0303) returns persisted leftover-map
 coordinates `ξ` / `ζ` on `GET /api/reports/compare/{period}` leftover pairs.
+Grouping comparison leftover-map graphic display (ADR 0304) draws the leftover-map
+graphic of those already-named coordinates above grouping comparison leftover-pair
+buttons when four leftover-map axes are finite.
 Item complete-case coverage
 (ADR 0282) captions the leftover-map graphic with how many scored criteria
 entered the map. Item complete-case coverage on the pair list (ADR 0285)

ARCHITECTURE.md

@@ -697,6 +697,9 @@ ADR 0302 captions grouping comparison leftover-pair buttons with persisted lefto
 coordinates `ξ` / `ζ` through formatLeftoverMapCoordinates.
 ADR 0303 returns persisted leftover-map coordinates `ξ` / `ζ` on
 `GET /api/reports/compare/{period}` leftover pairs.
+ADR 0304 draws the leftover-map graphic display of those already-named
+coordinates above grouping comparison leftover-pair buttons when four
+leftover-map axes are finite.
 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
@@ -727,8 +730,9 @@ incomplete item coverage (ADR 0292), leftover-map reconstruction `R̂`
 (ADR 0299), leftover expected `E`
 (ADR 0300), leftover-map rank
 (ADR 0301), leftover-map coordinates `ξ` / `ζ`
-(ADR 0302), and leftover-map coordinates on the compare leftover-pair payload
-(ADR 0303);
+(ADR 0302), leftover-map coordinates on the compare leftover-pair payload
+(ADR 0303), and leftover-map graphic display on the grouping comparison strip
+(ADR 0304);
 `POST .../rebuild` scores every grouping kind (post_admin). `make seed`
 folds A-100/B-200 Event Lineage fixtures (and the Riverbend calendar
 post) that already have constructed IRT cells into the same shared

CHANGELOG.d/2.61.0-leftover-map-compare-graphic.md

@@ -0,0 +1,15 @@
+## 2.61.0 — Leftover-map graphic display on grouping comparison strip
+
+- Draw the leftover-map graphic display of persisted `ξ` / `ζ` above
+  grouping comparison leftover-pair buttons (ADR 0304). After `make seed`,
+  closest and farthest leftover pairs sit above the member list with the
+  Gabriel biplot of already-named coordinates on the grouping comparison
+  strip when four leftover-map axes are finite; click a post marker or a
+  pair button opens that post. Omit the plot when no leftover pair has four
+  finite leftover-map coordinates. Rank-0 origin cells still plot at
+  `(0, 0)` when those persisted coordinates are stored. Do not invent
+  coordinates from leftover-map rank, leftover-map distance, or leftover-map
+  reconstruction. A finite negative leftover is shown, never clamped. This
+  increment does not caption leftover-map axis share or leftover-map coverage
+  on the comparison graphic. Never invent a leftover score. Never invent a
+  theta. No new columns.

CHANGELOG.md

@@ -8,6 +8,68 @@ All notable changes to this project are documented here. Format follows
 
 ### Added
 
+- Period leftover pairs now draw the leftover-map graphic display of
+  persisted leftover-map coordinates `ξ` / `ζ` above grouping comparison
+  leftover-pair buttons (ADR 0304 / v2.61.0). 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, a plot caption that matches
+  leftover-map item complete-case coverage, a plot caption that matches
+  leftover-map incomplete post coverage, a plot caption that matches
+  leftover-map incomplete item coverage, a pair-list note that matches
+  leftover-map post complete-case coverage, a pair-list note that matches
+  leftover-map item complete-case coverage, a pair-list note that matches
+  leftover-map incomplete post coverage, a pair-list note that matches
+  leftover-map incomplete item coverage, a grouping comparison note that
+  matches leftover-map post complete-case coverage, a grouping comparison
+  note that matches leftover-map item complete-case coverage, a grouping
+  comparison note that matches leftover-map incomplete post coverage, a
+  grouping comparison note that matches leftover-map incomplete item
+  coverage, grouping comparison leftover-pair buttons that match leftover-map
+  reconstruction `R̂` on the pair row, grouping comparison leftover-pair
+  buttons that match leftover-map explained leftover share `e` on the pair
+  row, grouping comparison leftover-pair buttons that match leftover-map
+  unexplained leftover share `s` on the pair row, grouping comparison
+  leftover-pair buttons that match leftover-map cross share `x` on the pair
+  row, grouping comparison leftover-pair buttons that match leftover-map
+  unexplained leftover `U` on the pair row, grouping comparison leftover-pair
+  buttons that match leftover residual `R` on the pair row, grouping
+  comparison leftover-pair buttons that match leftover observed `Y` on the
+  pair row, grouping comparison leftover-pair buttons that match leftover
+  expected `E` on the pair row, grouping comparison leftover-pair buttons
+  that match leftover-map rank on the pair row, grouping comparison leftover-pair
+  buttons that match leftover-map coordinates `ξ` / `ζ` on the pair row, a
+  live compare payload that carries those persisted leftover-map coordinates,
+  and the grouping comparison leftover-map graphic of those already-named
+  coordinates when four leftover-map axes are finite; click a post marker or
+  a pair button opens that post. A missing axis stays null and omits that
+  leftover-map comparison coordinates badge and keeps leftover-map rank when
+  that rank is a non-negative integer, leftover expected `E` when finite,
+  leftover observed `Y` when finite, leftover residual `R` when finite,
+  leftover-map unexplained leftover `U` when finite, leftover-map cross share
+  `x` when finite, leftover-map unexplained leftover share `s` when finite,
+  leftover-map explained leftover share `e` when finite, leftover-map
+  reconstruction `R̂` when finite, leftover-map distance `d`, plus the strip
+  coverage notes. Rank-0 origin cells still plot at `(0, 0)` when those
+  persisted coordinates are stored. Do not invent coordinates from leftover-map
+  rank, leftover-map distance, leftover expected, leftover observed, leftover
+  residual, leftover-map reconstruction, leftover-map unexplained leftover,
+  leftover-map post coverage, leftover-map item coverage, leftover-map
+  incomplete post coverage, leftover-map incomplete item coverage, or the
+  count of unused axes. A finite negative leftover is shown, never clamped.
+  Omit the comparison graphic when no leftover pair has four finite leftover-map
+  coordinates. This increment does not caption leftover-map axis share or
+  leftover-map coverage on the comparison graphic. Never invent a leftover
+  score or a theta. No new columns.
+
 - Period leftover pairs now return persisted leftover-map coordinates
   `ξ` / `ζ` on `GET /api/reports/compare/{period}` leftover pairs
   (ADR 0303 / v2.60.0). After `make seed`, closest and farthest leftover

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 / 0282 / 0283 / 0284 / 0285 / 0286 / 0287 / 0288 / 0289 / 0290 / 0291 / 0292 / 0293 / 0294 / 0295 / 0296 / 0297 / 0298 / 0299 / 0300 / 0301 / 0302 / 0303), 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 / 0283 / 0284 / 0285 / 0286 / 0287 / 0288 / 0289 / 0290 / 0291 / 0292 / 0293 / 0294 / 0295 / 0296 / 0297 / 0298 / 0299 / 0300 / 0301 / 0302 / 0303 / 0304), 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/0268-leftover-map-graphic-display.md

@@ -26,7 +26,9 @@
 [ADR 0279](0279-leftover-map-segment-expected.md)
 (leftover expected E on pair segments);
 [ADR 0280](0280-leftover-map-segment-rank.md)
-(leftover-map rank on pair segments)
+(leftover-map rank on pair segments);
+[ADR 0304](0304-leftover-map-compare-graphic.md)
+(leftover-map graphic display on the grouping comparison strip)
 
 Amends [ADR 0049](0049-leftover-pair-report-ui.md) and
 [ADR 0267](0267-leftover-map-coordinates.md). Independent of leftover-map
@@ -87,8 +89,8 @@ that pair from the plot rather than inventing a location. When no
 pair has four finite coordinates, omit the plot and keep the existing
 pair-list next action. Duplicate posts share one person marker;
 duplicate criteria share one item marker. The grouping comparison
-strip (ADR 0149) stays on its reduced leftover payload and does not
-gain this plot.
+strip (ADR 0149) later gains this plot from already-named leftover-map
+coordinates (ADR 0304).
 
 Do not add SQL. Do not edit shipped migrations. Do not persist inner
 product, cosine, or length as separate columns.