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/utils/callSummary.ts

@@ -32,3 +32,123 @@ export function describeCallEnd(durationMs: number, summary?: LotusCallSummary):
   }
   return parts.join(' · ');
 }
+
+/** [Gitea #253] The fork's `details` in io.lotus.call_summary (lotus.29+). */
+export type LotusCallSummaryDetails = {
+  participants: string[];
+  peakParticipants: number;
+  quality: { youPoorMs: number; othersPoorMs: Record<string, number>; everyonePoorMs: number };
+  network: {
+    rttMedianMs?: number;
+    rttP95Ms?: number;
+    outboundLossPct?: number;
+    inboundLossPct?: number;
+    jitterMs?: number;
+  };
+  activity: { speakingMs: number; mutedMs: number; screenshareMs: number };
+};
+
+const num = (v: unknown): number | undefined =>
+  typeof v === 'number' && Number.isFinite(v) && v >= 0 ? v : undefined;
+const obj = (v: unknown): Record<string, unknown> =>
+  typeof v === 'object' && v !== null && !Array.isArray(v) ? (v as Record<string, unknown>) : {};
+
+/** Defensive: the frame is another origin; take only well-formed fields. */
+export function parseCallSummaryDetails(raw: unknown): LotusCallSummaryDetails | undefined {
+  if (typeof raw !== 'object' || raw === null) return undefined;
+  const r = obj(raw);
+  const quality = obj(r.quality);
+  const network = obj(r.network);
+  const activity = obj(r.activity);
+  const othersPoorMs: Record<string, number> = {};
+  Object.entries(obj(quality.othersPoorMs)).forEach(([user, ms]) => {
+    const n = num(ms);
+    if (n !== undefined && user.startsWith('@')) othersPoorMs[user] = n;
+  });
+  const net: LotusCallSummaryDetails['network'] = {};
+  (['rttMedianMs', 'rttP95Ms', 'outboundLossPct', 'inboundLossPct', 'jitterMs'] as const).forEach(
+    (k) => {
+      const n = num(network[k]);
+      if (n !== undefined) net[k] = n;
+    },
+  );
+  return {
+    participants: Array.isArray(r.participants)
+      ? r.participants.filter((p): p is string => typeof p === 'string').slice(0, 200)
+      : [],
+    peakParticipants: num(r.peakParticipants) ?? 1,
+    quality: {
+      youPoorMs: num(quality.youPoorMs) ?? 0,
+      othersPoorMs,
+      everyonePoorMs: num(quality.everyonePoorMs) ?? 0,
+    },
+    network: net,
+    activity: {
+      speakingMs: num(activity.speakingMs) ?? 0,
+      mutedMs: num(activity.mutedMs) ?? 0,
+      screenshareMs: num(activity.screenshareMs) ?? 0,
+    },
+  };
+}
+
+export type CallSummarySection = { title: string; lines: string[] };
+
+/**
+ * [Gitea #253] The Details card, in technical wording (the owner's choice):
+ * who was there, connection quality and whose side it was on, network
+ * numbers, and your own activity. `nameOf` turns a user id into a display name.
+ */
+export function describeCallDetails(
+  summary: LotusCallSummary | undefined,
+  durationMs: number,
+  deafenedMs: number,
+  nameOf: (userId: string) => string,
+): CallSummarySection[] {
+  const sections: CallSummarySection[] = [];
+  const d = summary?.details;
+  const dur = describeCallDuration;
+  const people = d?.participants ?? [];
+  sections.push({
+    title: 'Call',
+    lines: [
+      `Duration ${dur(durationMs)}${d ? ` · peak ${d.peakParticipants} in the call` : ''}`,
+      people.length
+        ? `With ${people.map(nameOf).join(', ')}`
+        : d
+          ? 'Nobody else joined'
+          : 'Participants unknown',
+    ],
+  });
+  if (summary) {
+    const quality: string[] = [
+      `Verdict: ${summary.verdict} · ${summary.reconnects} reconnect${summary.reconnects === 1 ? '' : 's'}`,
+    ];
+    if (d) {
+      quality.push(`Your connection poor/lost: ${dur(d.quality.youPoorMs)}`);
+      Object.entries(d.quality.othersPoorMs)
+        .sort((a, b) => b[1] - a[1])
+        .forEach(([user, ms]) => quality.push(`${nameOf(user)} poor/lost: ${dur(ms)}`));
+      if (d.quality.everyonePoorMs > 0)
+        quality.push(
+          `Everyone poor at once: ${dur(d.quality.everyonePoorMs)} (likely server or SFU side)`,
+        );
+    } else quality.push(`Your connection poor/lost: ${dur(summary.poorMs)}`);
+    sections.push({ title: 'Connection', lines: quality });
+  }
+  if (d) {
+    const n = d.network;
+    const net: string[] = [];
+    if (n.rttMedianMs !== undefined)
+      net.push(`RTT median ${n.rttMedianMs} ms · p95 ${n.rttP95Ms ?? n.rttMedianMs} ms`);
+    if (n.outboundLossPct !== undefined) net.push(`Outbound packet loss ${n.outboundLossPct}%`);
+    if (n.inboundLossPct !== undefined) net.push(`Inbound packet loss ${n.inboundLossPct}%`);
+    if (n.jitterMs !== undefined) net.push(`Jitter ${n.jitterMs} ms`);
+    if (net.length) sections.push({ title: 'Network', lines: net });
+    const act = [
+      `Talking ${dur(d.activity.speakingMs)} · muted ${dur(d.activity.mutedMs)} · deafened ${dur(deafenedMs)}`,
+    ];
+    if (d.activity.screenshareMs > 0) act.push(`Screensharing ${dur(d.activity.screenshareMs)}`);
+    sections.push({ title: 'You', lines: act });
+  }
+  return sections;
+}