feat(call): Details card for the call-ended toast (#253)

The call-ended toast gets a Details button (and stays 10 s) that opens a
card with who was in the call and the peak, connection verdict and
reconnects, how long your / each person's / everyone's connection was
poor (likely the server when everyone), RTT, packet loss and jitter, and
your talk, mute, deafen and screenshare time, in technical wording.
Deafened time is tracked by CallEmbed; the rest comes from the fork's new
io.lotus.call_summary `details` (lotus.29). Settings → Calls gets
"Summary After Calls" (on by default).

Fixes #253

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

src/app/features/settings/general/General.tsx

@@ -1749,6 +1749,7 @@ function Calls() {
   );
 
   const [pttMode, setPttMode] = useSetting(settingsAtom, 'pttMode');
+  const [callSummaryToast, setCallSummaryToast] = useSetting(settingsAtom, 'callSummaryToast');
   const [callRejoin, setCallRejoin] = useSetting(settingsAtom, 'callRejoinAfterRestart');
   const [haptics, setHaptics] = useSetting(settingsAtom, 'hapticFeedback');
   const [pttKey, setPttKey] = useSetting(settingsAtom, 'pttKey');
@@ -2062,6 +2063,13 @@ function Calls() {
             />
           }
         />
+        <SettingTile
+          title="Summary After Calls"
+          description="When a call ends, show how long it was and how the connection held up, with a Details button for who was there, network numbers and your own talk/mute time."
+          after={
+            <Switch variant="Primary" value={callSummaryToast} onChange={setCallSummaryToast} />
+          }
+        />
         {hapticsSupported() && (
           <SettingTile
             title="Haptic Feedback"