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.test.ts

@@ -451,14 +451,16 @@ describe.each(modes)("CallViewModel (%s mode)", (mode) => {
     });
   });
 
-  test("one-on-one mobile layout shows local tile when video is enabled", () => {
+  // [lotus / cinny #265] The local tile stays on mobile with the camera off
+  // (upstream hid it), so you can see yourself in a voice call.
+  test("one-on-one mobile layout shows the local tile whether or not video is enabled", () => {
     withTestScheduler(({ behavior, schedule, expectObservable }) => {
       // Local participant enables their video, then disables it
       const videoInputMarbles = "    ny--n";
-      // While tile is shown, tap the screen twice
+      // Tap the screen twice
       const tapScreenInputMarbles = "--aa-";
-      // Layout should show local tile, make it small, enlarge it again, then hide it
-      const expectedLayoutMarbles = "abcba";
+      // The local tile is shown throughout; taps make it small, then large again
+      const expectedLayoutMarbles = "b-cb";
 
       withCallViewModel(
         {
@@ -477,12 +479,6 @@ describe.each(modes)("CallViewModel (%s mode)", (mode) => {
           expectObservable(summarizeLayout$(vm.layout$)).toBe(
             expectedLayoutMarbles,
             {
-              a: {
-                type: "one-on-one-mobile",
-                spotlight: [`${aliceId}:0`],
-                pip: undefined,
-                pipSize: "lg",
-              },
               b: {
                 type: "one-on-one-mobile",
                 spotlight: [`${aliceId}:0`],
@@ -518,7 +514,7 @@ describe.each(modes)("CallViewModel (%s mode)", (mode) => {
             a: {
               type: "one-on-one-mobile",
               spotlight: [`${aliceId}:0`],
-              pip: undefined,
+              pip: `${localId}:0`,
               pipSize: "lg",
             },
           });
@@ -566,7 +562,7 @@ describe.each(modes)("CallViewModel (%s mode)", (mode) => {
               a: {
                 type: "one-on-one-mobile",
                 spotlight: [`${aliceId}:0`],
-                pip: undefined,
+                pip: `${localId}:0`,
                 pipSize: "sm",
               },
               b: {
@@ -765,7 +761,7 @@ describe.each(modes)("CallViewModel (%s mode)", (mode) => {
                 // This is the expected one-on-one layout for a narrow window
                 type: "one-on-one-mobile",
                 spotlight: [`${aliceId}:0`],
-                pip: undefined,
+                pip: `${localId}:0`,
                 pipSize: "lg",
               },
               b: {

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(