feat(web): score heat scale, drop release row expand

Score cells interpolate red-to-green relative to the scores in the
current deck; the click-to-expand panel only repeated row content.

web/src/style.css

@@ -51,6 +51,16 @@
   --verdict-waived: oklch(0.82 0.14 80);
   --verdict-rejected: oklch(0.68 0.02 250);
 
+  /* score heat scale (issue #111) — one list-relative gradient from lowest
+     red to highest green; JS picks the stop, colour stays in tokens */
+  --score-0: oklch(0.68 0.19 25);
+  --score-1: oklch(0.7 0.185 46);
+  --score-2: oklch(0.72 0.175 67);
+  --score-3: oklch(0.75 0.165 88);
+  --score-4: oklch(0.77 0.16 108);
+  --score-5: oklch(0.79 0.165 129);
+  --score-6: oklch(0.8 0.17 150);
+
   /* library status (§4.2) — informational, never a severity ramp:
      activity in one violet family, satisfaction in neutrals */
   --status-airing: oklch(0.78 0.14 305);
@@ -994,7 +1004,7 @@ body {
   border-bottom: 1px solid oklch(from var(--line) l c h / 45%);
 }
 
-/* the whole line is the expand affordance; grab is its own control */
+/* the line is plain content now — grab is its own control */
 .rel-line {
   flex: 1;
   min-width: 0;
@@ -1002,20 +1012,6 @@ body {
   align-items: center;
   flex-wrap: wrap;
   gap: var(--space-1);
-  padding: 0;
-  font: inherit;
-  text-align: left;
-  color: inherit;
-  background: none;
-  border: 0;
-  border-radius: var(--radius);
-  cursor: pointer;
-  transition: background 150ms var(--ease-out);
-}
-
-.rel-line:hover,
-.rel-line:focus-visible {
-  background: var(--panel);
 }
 
 /* §9.3: the release name is secondary — evidence, not the primary key */
@@ -1044,25 +1040,34 @@ body {
   color: var(--signal-fault);
 }
 
-.rel-full {
-  flex-basis: 100%;
-  padding: var(--space-2) var(--space-3);
-  background: var(--panel);
-  border: 1px solid var(--line);
-  border-radius: var(--radius);
-  box-shadow: inset 0 1px var(--highlight);
+/* score heat: data-score is the list-relative stop, 0 lowest … 6 highest */
+.rel-line .cw-score[data-score="0"] {
+  color: var(--score-0);
+  border-color: oklch(from var(--score-0) l c h / 45%);
 }
-
-.rel-raw {
-  margin: 0;
-  overflow-wrap: anywhere;
-  font-size: var(--text-xs);
-  color: var(--ink);
+.rel-line .cw-score[data-score="1"] {
+  color: var(--score-1);
+  border-color: oklch(from var(--score-1) l c h / 45%);
 }
-
-.rel-meta {
-  margin: var(--space-1) 0 0;
-  font-size: var(--text-2xs);
+.rel-line .cw-score[data-score="2"] {
+  color: var(--score-2);
+  border-color: oklch(from var(--score-2) l c h / 45%);
+}
+.rel-line .cw-score[data-score="3"] {
+  color: var(--score-3);
+  border-color: oklch(from var(--score-3) l c h / 45%);
+}
+.rel-line .cw-score[data-score="4"] {
+  color: var(--score-4);
+  border-color: oklch(from var(--score-4) l c h / 45%);
+}
+.rel-line .cw-score[data-score="5"] {
+  color: var(--score-5);
+  border-color: oklch(from var(--score-5) l c h / 45%);
+}
+.rel-line .cw-score[data-score="6"] {
+  color: var(--score-6);
+  border-color: oklch(from var(--score-6) l c h / 45%);
 }
 
 /* ---- library view (§4.2) ---------------------------------------------- */
@@ -1236,8 +1241,8 @@ body {
 /* ---- narrow deck (§9.3 at phone widths) ------------------------------- */
 
 /* the full seven-column line is 36rem; under 40rem it cannot fit, so hdr
-   and audio leave the line (the expand row carries them) and the five
-   surviving columns tighten — aligned, never wrapped, never scrolled */
+   and audio leave the line and the five surviving columns tighten —
+   aligned, never wrapped, never scrolled */
 @media (max-width: 40rem) {
   .colhead .cw,
   .rel-line .chip {