feat(ui): global keyboard shortcuts for record toggle + Settings (T7.4, FR-UX-3)

Ctrl+Shift+R toggles recording, Ctrl+, toggles Settings, Escape closes
whichever overlay (consent notice, then Settings) is open. Shortcuts
never hijack typing in an input/textarea/select/contenteditable target;
Escape is exempt from that guard so it always closes an open modal.

"Template apply" from the roadmap item isn't included — there's no
template-selection UI yet (that lands with T8.1 in Phase 8).

src/App.svelte

@@ -34,7 +34,12 @@
     systemPrefersDark = media.matches;
     const onSystemThemeChange = (e: MediaQueryListEvent) => (systemPrefersDark = e.matches);
     media.addEventListener("change", onSystemThemeChange);
-    return () => media.removeEventListener("change", onSystemThemeChange);
+
+    window.addEventListener("keydown", onGlobalKeydown);
+    return () => {
+      media.removeEventListener("change", onSystemThemeChange);
+      window.removeEventListener("keydown", onGlobalKeydown);
+    };
   });
 
   function startRecording() {
@@ -42,6 +47,39 @@
     recording.start(undefined, settings.settings.default_record);
   }
 
+  function toggleRecording() {
+    if (recording.state === "idle") startRecording();
+    else recording.stop();
+  }
+
+  // Global shortcuts (T7.4, FR-UX-3): record start/stop, view toggles.
+  // "Template apply" isn't included — there's no template UI yet (Phase 8, T8.1).
+  function isEditableTarget(target: EventTarget | null): boolean {
+    if (!(target instanceof HTMLElement)) return false;
+    return (
+      target.tagName === "INPUT" ||
+      target.tagName === "TEXTAREA" ||
+      target.tagName === "SELECT" ||
+      target.isContentEditable
+    );
+  }
+
+  function onGlobalKeydown(e: KeyboardEvent) {
+    if (e.key === "Escape") {
+      if (showConsent) showConsent = false;
+      else if (showSettings) showSettings = false;
+      return;
+    }
+    if (isEditableTarget(e.target)) return; // never hijack typing in a field
+    if (e.ctrlKey && e.shiftKey && e.key.toLowerCase() === "r") {
+      e.preventDefault();
+      toggleRecording();
+    } else if (e.ctrlKey && e.key === ",") {
+      e.preventDefault();
+      showSettings = !showSettings;
+    }
+  }
+
   // Mid-meeting retention toggle (FR-REC-1); gates on the same one-time
   // consent notice as the Settings default-record toggle (FR-REC-2).
   function onToggleRetention(e: Event) {
@@ -67,9 +105,17 @@
     <span class="muted">local · private</span>
     <div class="spacer"></div>
     {#if recording.state === "idle"}
-      <button onclick={startRecording}>● Record</button>
+      <button
+        onclick={startRecording}
+        title="Start recording (Ctrl+Shift+R)"
+        aria-keyshortcuts="Control+Shift+R">● Record</button
+      >
     {:else}
-      <button onclick={() => recording.stop()}>■ Stop</button>
+      <button
+        onclick={() => recording.stop()}
+        title="Stop recording (Ctrl+Shift+R)"
+        aria-keyshortcuts="Control+Shift+R">■ Stop</button
+      >
       <span class="rec">Recording…</span>
       <LevelMeter rms={recording.levelRms} peak={recording.levelPeak} />
       {#if settings.hardware}
@@ -99,8 +145,9 @@
     <button
       class="icon"
       aria-label="Settings"
-      title="Settings"
-      onclick={() => (showSettings = true)}>⚙</button
+      title="Settings (Ctrl+,)"
+      aria-keyshortcuts="Control+,"
+      onclick={() => (showSettings = !showSettings)}>⚙</button
     >
   </header>