feat(lotus): keep your own tile on mobile with the camera off (cinny #265)

Upstream drops the local PiP in the one-on-one mobile layout whenever the
local camera is off. In Lotus voice rooms that is nearly always, so on a
phone you never saw yourself or your own speaking ring. Show it as the
desktop layout does; the tile falls back to your avatar. Tests updated.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5

src/state/CallViewModel/CallViewModel.ts

@@ -1220,19 +1220,22 @@ export function createCallViewModel$(
       }),
     );
 
+  // [lotus / cinny #265] Upstream drops the local PiP on mobile while your
+  // camera is off; in Lotus voice rooms that is almost always, so on a phone
+  // you never saw yourself (or your own speaking ring). Show it as desktop
+  // does: the tile falls back to your avatar.
   const oneOnOneMobileLayoutMedia$: Observable<OneOnOneMobileLayoutMedia | null> =
     oneOnOneLayoutMedia$.pipe(
-      switchMap((media) => {
-        if (media === null) return of(null);
-        return media.local.videoEnabled$.pipe(
-          map((videoEnabled) => ({
-            type: "one-on-one-mobile" as const,
-            edgeToEdge: true as const,
-            spotlight: media.remote,
-            pip: videoEnabled ? media.local : undefined,
-          })),
-        );
-      }),
+      map((media) =>
+        media === null
+          ? null
+          : {
+              type: "one-on-one-mobile" as const,
+              edgeToEdge: true as const,
+              spotlight: media.remote,
+              pip: media.local,
+            },
+      ),
     );
 
   const pipLayoutMedia$: Observable<LayoutMedia> = spotlight$.pipe(