refactor(coach): drop non-functional mic icon from composer

The mic was rendered + disabled with a "voice arrives with iOS"
tooltip, drawing taps that did nothing. Voice input remains scheduled
for the iOS client (v1.5); the web composer no longer surfaces a
placeholder. Frees the row for the Enter-to-send hint to breathe.

src/components/insights/coach-panel/__tests__/coach-input.test.tsx

@@ -11,16 +11,17 @@ function render(node: React.ReactNode, locale: "en" | "de" = "en") {
 }
 
 describe("<CoachInput>", () => {
-  it("mounts the textarea, mic, and send button slots", () => {
+  it("mounts the textarea + send button slots (mic dropped in W5)", () => {
     // v1.4.22 B4 — the disclaimer moved to the sources rail; the
     // composer no longer renders its own paragraph below the input.
+    // v1.4.25 W5 — the non-functional mic icon was removed.
     const html = render(
       <CoachInput value="" onChange={() => {}} onSubmit={() => {}} />,
     );
     expect(html).toContain('data-slot="coach-input"');
     expect(html).toContain('data-slot="coach-input-textarea"');
-    expect(html).toContain('data-slot="coach-input-mic"');
     expect(html).toContain('data-slot="coach-input-send"');
+    expect(html).not.toContain('data-slot="coach-input-mic"');
     expect(html).not.toContain('data-slot="coach-input-disclaimer"');
     expect(html).not.toContain("Coach replies are generated");
   });
@@ -41,20 +42,16 @@ describe("<CoachInput>", () => {
     expect(html).toContain("Frag mich etwas zu deinen Daten");
   });
 
-  it("disables the mic button with the v1.5 tooltip text", () => {
+  it("no longer renders a mic button (W5 removed the placeholder)", () => {
+    // v1.4.25 W5 — the mic icon used to be rendered + disabled with a
+    // "voice arrives with iOS" tooltip. Marc flagged it as a click-
+    // trap: nothing happened on tap. The composer now drops the icon
+    // entirely; voice input remains a v1.5 iOS feature.
     const html = render(
       <CoachInput value="" onChange={() => {}} onSubmit={() => {}} />,
     );
-    // The button carries both the disabled attribute and the
-    // localised v1.5 voice tooltip on aria-label. Attribute order is
-    // not guaranteed across React versions, so we check for both
-    // independently inside the same tag.
-    const micTag = html.match(/<button[^>]*data-slot="coach-input-mic"[^>]*>/);
-    expect(micTag).not.toBeNull();
-    expect(micTag?.[0]).toContain("disabled");
-    expect(micTag?.[0]).toContain(
-      'aria-label="Voice input arrives with the iOS app in v1.5."',
-    );
+    expect(html).not.toMatch(/data-slot="coach-input-mic"/);
+    expect(html).not.toContain("Voice input arrives with the iOS app");
   });
 
   it("disables the send button when the value is empty", () => {

src/components/insights/coach-panel/coach-input.tsx

@@ -1,23 +1,17 @@
 "use client";
 
 import { type FormEvent, type KeyboardEvent, useCallback } from "react";
-import { Loader2, Mic, Send } from "lucide-react";
+import { Loader2, Send } from "lucide-react";
 
 import { Button } from "@/components/ui/button";
-import {
-  Tooltip,
-  TooltipContent,
-  TooltipProvider,
-  TooltipTrigger,
-} from "@/components/ui/tooltip";
 import { cn } from "@/lib/utils";
 import { useTranslations } from "@/lib/i18n/context";
 
 /**
  * v1.4.20 phase B2b — Coach composer.
  *
- * `<textarea>` wrapped in a Dracula-styled card with a send button +
- * mic placeholder. Submit fires on:
+ * `<textarea>` wrapped in a Dracula-styled card with a send button.
+ * Submit fires on:
  *   - Enter (no Shift) → send
  *   - Cmd/Ctrl + Enter → send (parity with the artboard ⌘↵ chip)
  *   - Shift + Enter → newline (default browser behaviour)
@@ -26,13 +20,13 @@ import { useTranslations } from "@/lib/i18n/context";
  * the drawer. `disabled` flips during a streamed reply so we never
  * fire two requests in parallel.
  *
- * Mic is rendered but disabled with a tooltip ("Voice input arrives
- * with the iOS app in v1.5") because the natural shipper of voice is
- * the native client, not the PWA.
- *
  * v1.4.22 B4: the disclaimer ("Coach replies are generated …") moved
  * out of the composer and into the sources rail footer, so the
  * composer stays focused on the input affordance.
+ *
+ * v1.4.25 W5: dropped the non-functional mic icon. The voice-input
+ * affordance ships with the iOS client; surfacing a placeholder in the
+ * web composer drew clicks for an action that did nothing.
  */
 export interface CoachInputProps {
   value: string;
@@ -104,26 +98,6 @@ export function CoachInput({
           )}
         />
         <div className="mt-1.5 flex items-center gap-2">
-          <TooltipProvider delayDuration={200}>
-            <Tooltip>
-              <TooltipTrigger asChild>
-                <Button
-                  type="button"
-                  variant="ghost"
-                  size="icon"
-                  disabled
-                  aria-label={t("insights.coach.voiceComingSoon")}
-                  data-slot="coach-input-mic"
-                  className="size-8"
-                >
-                  <Mic className="size-4" aria-hidden="true" />
-                </Button>
-              </TooltipTrigger>
-              <TooltipContent>
-                {t("insights.coach.voiceComingSoon")}
-              </TooltipContent>
-            </Tooltip>
-          </TooltipProvider>
           <span
             data-slot="coach-input-hint"
             className="text-muted-foreground text-[11px]"