refactor(errors): route silent catches through logError/reportError

Every catch now either surfaces, re-throws, or calls logError with a scope
tag. No more empty catches or bare console.error:

- auth-store: signInToFirebase / restoreSession / signOut paths gain
  logError context. Behavior is unchanged (best-effort local sign-out,
  fall back to login on restore failure).
- use-stream-autoplay: Audio.play() and download-URL fetches log their
  failures instead of dropping silently (both are nice-to-haves so UX
  stays silent — but we can now trace "why didn't autoplay trigger?").
- pusher-client: ws errors / parse failures / server errors / listener
  crashes all routed through logError, and listener bugs (which silently
  break user flows) now go through reportError so they're actually
  surfaced in observability.
- settings-page: email-notifications toggle now toasts on failure
  instead of silently reverting with no explanation.
- huddle-app: screen-share failures use logError.

js/src/hooks/use-stream-autoplay.ts

@@ -5,6 +5,7 @@ import { apiClient } from "@/api/client";
 import { useAuthStore } from "@/stores/auth-store";
 import { useAutoplayStore } from "@/stores/autoplay-store";
 import { resolveHumanDisplay } from "@/lib/humans";
+import { logError } from "@/lib/errors";
 
 /**
  * Triggers autoplay when a stream's latest child changes to a new media particle.
@@ -37,7 +38,11 @@ export function useStreamAutoplay(
     if (useAutoplayStore.getState().muted) return;
 
     if (latestChild.type === "text") {
-      new Audio(beepSound).play().catch(() => {});
+      // Browser autoplay policy can block this before user interaction; that's
+      // fine — the beep is a nice-to-have, not a critical signal.
+      new Audio(beepSound).play().catch((err) =>
+        logError(err, { scope: "autoplay.beep" }),
+      );
       return;
     }
 
@@ -60,8 +65,8 @@ export function useStreamAutoplay(
         senderName: displayName,
         senderInitials: initials,
       });
-    }).catch(() => {
-      // Failed to get download URL — skip autoplay silently
-    });
+    }).catch((err) =>
+      logError(err, { scope: "autoplay.fetchUrl", particleId: particle.id }),
+    );
   }, [latestChild?.id]); // eslint-disable-line react-hooks/exhaustive-deps
 }