fix(targets): make the coach launch an icon-only affordance

The per-card Coach CTA was rendering a labelled ghost pill (chat
glyph + 'Coach fragen' text). On a card already carrying a status
pill, range bar, consistency strip, headline number, edit cog and a
source link, the labelled pill dominated the optical hierarchy. Drop
the visible label, keep the chat-bubble glyph, and surface the
affordance via aria-label + title so screen readers and tooltips
still announce 'Ask Coach' / 'Coach fragen'. Collapse the footer
flex container to a single horizontal row at every breakpoint now
that the button is icon-sized.

src/components/targets/__tests__/target-coach-button.test.tsx

@@ -28,7 +28,13 @@ describe("<TargetCoachButton>", () => {
   it("renders the button when aiEnabled is true", () => {
     const html = render({ ...baseProps, aiEnabled: true });
     expect(html).toContain('data-slot="target-coach-cta"');
-    expect(html).toContain("Ask Coach");
+    // v1.4.28 FB-L1 — the affordance is now icon-only; the label
+    // survives as an aria-label + title so screen readers + tooltips
+    // still surface "Ask Coach" / "Coach fragen".
+    expect(html).toContain('aria-label="Ask Coach"');
+    expect(html).toContain('title="Ask Coach"');
+    // No visible text label — only the chat-bubble glyph.
+    expect(html).not.toMatch(/>Ask Coach</);
   });
 
   it("renders NOTHING when aiEnabled is false (no broken-button state)", () => {

src/components/targets/target-card.tsx

@@ -656,20 +656,19 @@ export function TargetCard({
           </div>
         )}
 
-        {/* Row 6: footer. Mobile-first reflow:
-              - default (<640px): stack vertically; the Coach CTA
-                spans full width so the touch target is generous, the
-                source link sits beneath it right-aligned.
-              - sm+ (≥640px): horizontal row, Coach left + source right.
-            `mt-auto` pins to card bottom so grid cells align. */}
-        <div className="mt-auto flex flex-col items-stretch gap-2 pt-1 sm:flex-row sm:items-center sm:justify-between sm:gap-3">
+        {/* Row 6: footer. v1.4.28 FB-L1 — the Coach CTA is now an
+            icon-only affordance (chat-bubble glyph + aria-label), so
+            the row stays horizontal at every breakpoint: icon left,
+            source link right. `mt-auto` pins to card bottom so grid
+            cells align. */}
+        <div className="mt-auto flex flex-row items-center justify-between gap-3 pt-1">
           {aiEnabled && (
             <TargetCoachButton
               prefill={coachPrefill}
               sources={coachSources}
               onAskCoach={onAskCoach}
               aiEnabled={aiEnabled}
-              className="w-full justify-center sm:-ml-2 sm:w-auto sm:justify-start"
+              className="-ml-2"
             />
           )}
           {sourceLink ? (
@@ -677,13 +676,13 @@ export function TargetCard({
               href={sourceLink}
               target="_blank"
               rel="noopener noreferrer"
-              className="text-muted-foreground hover:text-foreground inline-flex items-center gap-1 self-end text-xs sm:ml-auto sm:self-auto"
+              className="text-muted-foreground hover:text-foreground ml-auto inline-flex items-center gap-1 text-xs"
             >
               <span>{target.source}</span>
               <ExternalLink className="size-3" aria-hidden="true" />
             </a>
           ) : (
-            <span className="text-muted-foreground self-end text-xs sm:ml-auto sm:self-auto">
+            <span className="text-muted-foreground ml-auto text-xs">
               {target.source}
             </span>
           )}

src/components/targets/target-coach-button.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { Sparkles } from "lucide-react";
+import { MessageCircle } from "lucide-react";
 
 import { Button } from "@/components/ui/button";
 import { useTranslations } from "@/lib/i18n/context";
@@ -17,6 +17,14 @@ import type { CoachScope, CoachScopeSource } from "@/lib/ai/coach/types";
  * On click the button fires `onAskCoach({ prefill, scope })`. The
  * parent owns the `CoachDrawer` state; this button doesn't know about
  * the drawer at all.
+ *
+ * v1.4.28 R3c FB-L1 — collapsed to an icon-only affordance. The card
+ * footer was carrying a labelled pill ("Coach fragen"); on a card with
+ * a status pill, range bar, consistency strip, headline number, edit
+ * cog and a source link, the labelled pill dominated the visual
+ * hierarchy. Dropping the label retains the affordance via the
+ * chat-bubble glyph + `aria-label` while shrinking the optical weight
+ * to a per-card icon button.
  */
 export interface TargetCoachButtonProps {
   /**
@@ -51,11 +59,13 @@ export function TargetCoachButton({
 
   if (!aiEnabled) return null;
 
+  const accessibleLabel = t("targets.coach.cta");
+
   return (
     <Button
       type="button"
       variant="ghost"
-      size="sm"
+      size="icon"
       onClick={() =>
         onAskCoach({
           prefill,
@@ -66,10 +76,11 @@ export function TargetCoachButton({
         })
       }
       data-slot="target-coach-cta"
+      aria-label={accessibleLabel}
+      title={accessibleLabel}
       className={className}
     >
-      <Sparkles className="size-3.5" aria-hidden="true" />
-      <span>{t("targets.coach.cta")}</span>
+      <MessageCircle className="size-4" aria-hidden="true" />
     </Button>
   );
 }