Fix what the review confirmed: anchoring, overlap, honesty, one voice

Fourteen findings from an adversarial review pass, applied together because
most share two roots — geometry written against assumptions the renderer does
not hold, and a design language spelled out longhand until it drifted.

Correctness. The leader line pointed at empty space: CSS2DObject centres a
label on its anchor by default, and margin only nudges the centred box — the
overlay now anchors the left edge (center 0, 0.5) so the hairline meets the
star. The info panel and not-found panel returned to top-4 at sm, under a
search field that is 26rem wide and centred, covering the back button on
every viewport from 640 to 1088px; they now wait for xl. The search empty
state asserted "nothing matches" while the catalogues were still loading —
and forever if they failed — so it now waits for the index. "Matches 8" was
the page size wearing the costume of a count; the header now reports the
real total, with the cap stated when it bites. The nameplate un-hides at lg
instead of sm, clear of the rail and the object card. theme-color matches
the void again.

Accessibility. Tabbing to search changed one hairline's hue; the wrapper now
carries the old ring as a visible focus indicator.

Structure. hud-surface names the panel recipe that had been inlined at seven
sites and had already forked into /85 and /92; the backdrop blur it carried
is gone from every near-opaque panel — the canvas beneath redraws every
frame, so each blur was re-sampled continuously for an effect the fill hid —
and survives only as blur-sm on the genuinely translucent search shell.
type-label and type-eyebrow name the two label voices, retiring 0.14em and
the stray hover:bg-accent/10. The Measured/Derived rows both cards pasted
twice each live once in ReadoutSectionsComponent; the reticle and chevron
each draw from a single geometry, the reticle's stroke held in screen pixels
so one mark serves every size. The acquire wipe plays once per search, not
once per keystroke, because both outcomes now share one panel. hud-banner,
which styled nothing since the rule was deleted, is a data-testid — the
convention its own file already used.

527 unit tests, 6/6 end-to-end, production build, and a driven screenshot:
every label now hangs off its star with the hairline touching the point.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WaySiNst4HhDXBHnMy8p5G

src/app/features/body-detail/readout-sections.component.ts

@@ -0,0 +1,43 @@
+import { ChangeDetectionStrategy, Component, input } from '@angular/core';
+
+import { BodyReadouts } from './body-readouts';
+
+/**
+ * The Measured/Derived rows and the provenance footnote, shared by the detail page's info panel
+ * and the system view's object card. `bodyReadouts` already guarantees the two surfaces agree
+ * on the numbers; this guarantees they agree on the pixels — the markup used to be pasted four
+ * times across the two templates, which is exactly the drift the shared data model exists to
+ * prevent.
+ */
+@Component({
+  selector: 'app-readout-sections',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+  template: `
+    @if (readouts().measured.length) {
+      <p class="type-label border-t border-border/40 px-4 pt-3 pb-1 text-muted">Measured</p>
+      <dl class="divide-y divide-border/25">
+        @for (row of readouts().measured; track row.label) {
+          <div class="flex items-baseline justify-between gap-4 px-4 py-2">
+            <dt class="type-label text-muted">{{ row.label }}</dt>
+            <dd class="text-sm tabular-nums">{{ row.value }}</dd>
+          </div>
+        }
+      </dl>
+    }
+
+    <p class="type-label border-t border-border/40 px-4 pt-3 pb-1 text-muted">Derived</p>
+    <dl class="divide-y divide-border/25">
+      @for (row of readouts().derived; track row.label) {
+        <div class="flex items-baseline justify-between gap-4 px-4 py-2">
+          <dt class="type-label text-muted">{{ row.label }}</dt>
+          <dd class="text-sm tabular-nums">{{ row.value }}</dd>
+        </div>
+      }
+    </dl>
+
+    <p class="border-t border-border/40 px-4 py-3 text-[10px] leading-relaxed text-muted">{{ readouts().provenance }}</p>
+  `
+})
+export class ReadoutSectionsComponent {
+  readonly readouts = input.required<BodyReadouts>();
+}