feat(call-to-play): retain terminal outcomes

Keep complete running and cancelled histories visible for fifteen minutes so
peers retain the roster, chat, and outcome long enough to understand what
happened. Compact them to terminal tombstones afterward without charging
settled calls against the active-history limit.

Model running and cancelled as durable read-only frontend states, exclude
them from active badges, prune retired raw events, and document the lifecycle.
Add peer scenario S49 to prove a late joiner reconstructs a terminal call with
its roster and chat intact.

Test Plan:
- just fmt
- just clippy
- just test
- just frontend-test
- just build
- just peer-cli-tests S48 S49
- python3 -m py_compile crates/lanspread-peer-cli/scripts/run_extended_scenarios.py
- git diff --cached --check

crates/lanspread-peer-cli/scripts/run_extended_scenarios.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-"""Run the peer-cli scenarios S1-S48 through Docker."""
+"""Run the peer-cli scenarios S1-S49 through Docker."""
 
 from __future__ import annotations
 
@@ -357,6 +357,7 @@ class Runner:
             ("S46", self.s46_receiver_cancel_mid_stream),
             ("S47", self.s47_multi_archive_streams_in_sorted_order),
             ("S48", self.s48_call_to_play_replication_and_late_join),
+            ("S49", self.s49_terminal_call_to_play_late_join),
         ]
 
         for scenario_id, scenario in scenarios:
@@ -1824,6 +1825,79 @@ class Runner:
 
         return "live create/RSVP/chat replicated and a late joiner received deduplicated history"
 
+    def s49_terminal_call_to_play_late_join(self) -> str:
+        alice = self.peer("s49-alice")
+        bob = self.peer("s49-bob")
+        bob.connect_to(alice)
+
+        now = int(time.time() * 1000)
+        create = {
+            "id": "s49-create",
+            "call_id": "s49-call",
+            "actor_id": "",
+            "actor_name": "Alice",
+            "at": now,
+            "action": {
+                "Create": {
+                    "game_id": "cnctw",
+                    "max_players": 4,
+                    "scheduled_for": None,
+                    "deadline": now + 600_000,
+                }
+            },
+        }
+        ready = {
+            "id": "s49-ready",
+            "call_id": "s49-call",
+            "actor_id": "",
+            "actor_name": "Bob",
+            "at": now + 1,
+            "action": {"Respond": {"ready_at": None}},
+        }
+        message = {
+            "id": "s49-message-event",
+            "call_id": "s49-call",
+            "actor_id": "",
+            "actor_name": "Bob",
+            "at": now + 2,
+            "action": {
+                "SendMessage": {
+                    "message_id": "s49-message",
+                    "text": "Ready to launch",
+                }
+            },
+        }
+        start = {
+            "id": "s49-start",
+            "call_id": "s49-call",
+            "actor_id": "",
+            "actor_name": "Alice",
+            "at": now + 3,
+            "action": "Start",
+        }
+
+        alice.publish_call_to_play(create)
+        wait_call_to_play_events(bob, {"s49-create"})
+        bob.publish_call_to_play(ready)
+        bob.publish_call_to_play(message)
+        wait_call_to_play_events(alice, {"s49-create", "s49-ready", "s49-message-event"})
+        alice.publish_call_to_play(start)
+        wait_call_to_play_events(
+            bob,
+            {"s49-create", "s49-ready", "s49-message-event", "s49-start"},
+        )
+
+        charlie = self.peer("s49-charlie")
+        charlie.connect_to(alice)
+        events = wait_call_to_play_events(
+            charlie,
+            {"s49-create", "s49-ready", "s49-message-event", "s49-start"},
+        )
+        if len(events) != 4:
+            raise ScenarioError(f"terminal late-join history is incomplete: {events}")
+
+        return "late joiner reconstructed terminal call outcome, roster, and chat"
+
 
 def run(command: list[str], description: str) -> subprocess.CompletedProcess[str]:
     result = subprocess.run(

crates/lanspread-peer/ARCHITECTURE.md

@@ -52,13 +52,15 @@ Call to Play is transient peer-session state rather than database state. The
 peer keeps a bounded event history, deduplicated by event ID. Every event and
 chat message remains in the snapshot for the full lifetime of an active call,
 so a peer joining mid-call receives the complete context. A creator's `Start`
-or `Cancel` event replaces that terminal call with one small tombstone; this
-lets a peer that missed the live action heal on its next handshake without
-retaining the inactive call's full history. Active calls are never partially
-trimmed. If genuinely active history reaches the bound, local publishes return
-an error to the caller instead of appearing to succeed. A call whose deadline
-elapses remains available for five minutes so the creator can start or extend
-it, then its history is evicted as a unit. A
+or `Cancel` makes the call terminal and read-only, but its complete roster and
+chat history remain in snapshots for 15 minutes so late joiners can see the
+outcome. After that display window the history compacts to the Start or Cancel
+tombstone for the rest of the peer session. Active and recently terminal calls
+are never partially trimmed. If genuinely active history reaches the bound,
+local publishes return an error to the caller instead of appearing to succeed;
+terminal histories and tombstones do not consume that active-history capacity.
+A call whose deadline elapses remains available for five minutes so the creator
+can start or extend it, then its unresolved history is evicted as a unit. A
 local action is applied to that history, sent to the UI, and broadcast to every
 currently known peer. An incoming live event is applied once and sent to the UI
 without being rebroadcast, which prevents forwarding loops.

crates/lanspread-peer/src/call_to_play.rs

@@ -23,6 +23,7 @@ const MAX_GAME_ID_CHARS: usize = 256;
 const MAX_USERNAME_CHARS: usize = 24;
 const MAX_MESSAGE_CHARS: usize = 500;
 const EXPIRED_RETENTION_MS: i64 = 5 * 60_000;
+const TERMINAL_RETENTION_MS: i64 = 15 * 60_000;
 
 #[derive(Debug, Default)]
 pub(crate) struct CallToPlayStore {
@@ -120,6 +121,7 @@ impl CallToPlayStore {
             .map(|event| event.call_id.clone())
             .collect::<HashSet<_>>();
         let retained_tombstones = terminal_tombstone_call_ids(&retained);
+        let retained_history = HistoryIndex::build(&retained);
         let mut applicable = Vec::with_capacity(new_events.len());
         let mut missing_call_ids = BTreeSet::new();
         let mut obsolete = 0;
@@ -129,6 +131,13 @@ impl CallToPlayStore {
                 obsolete += 1;
                 continue;
             }
+            if let Some(terminal) = retained_history.terminal_events.get(&event.call_id)
+                && (matches!(event.action, CallToPlayAction::Create { .. })
+                    || (event.at, event.id.as_str()) > terminal.order_key())
+            {
+                obsolete += 1;
+                continue;
+            }
             if !matches!(event.action, CallToPlayAction::Create { .. })
                 && !rooted_calls.contains(event.call_id.as_str())
             {
@@ -336,10 +345,13 @@ fn compact_history(events: &mut Vec<CallToPlayEvent>, now: i64) {
         if expired_calls.contains(event.call_id.as_str()) {
             return false;
         }
-        index
-            .terminal_events
-            .get(&event.call_id)
-            .is_none_or(|terminal| event.id == terminal.event_id)
+        let Some(terminal) = index.terminal_events.get(&event.call_id) else {
+            return true;
+        };
+        if (event.at, event.id.as_str()) > terminal.order_key() {
+            return false;
+        }
+        now - terminal.at <= TERMINAL_RETENTION_MS || event.id == terminal.event_id
     });
 }
 
@@ -536,7 +548,13 @@ fn validate_nonempty(
 mod tests {
     use lanspread_proto::{CallToPlayAck, CallToPlayAction, CallToPlayEvent};
 
-    use super::{CallToPlayStore, MAX_EVENTS, MergeError, delivery_resync_reason};
+    use super::{
+        CallToPlayStore,
+        MAX_EVENTS,
+        MergeError,
+        TERMINAL_RETENTION_MS,
+        delivery_resync_reason,
+    };
 
     const TEST_NOW: i64 = 8_000_000_000_000;
 
@@ -705,6 +723,11 @@ mod tests {
         store
             .merge_batch_at(vec![create_event("create"), start.clone()], TEST_NOW)
             .expect("terminal history should merge");
+        let after_terminal_retention = start.at + TERMINAL_RETENTION_MS + 1;
+        assert_eq!(
+            store.snapshot_at(after_terminal_retention).as_slice(),
+            std::slice::from_ref(&start)
+        );
 
         let stale = store
             .merge_batch_at(
@@ -718,13 +741,13 @@ mod tests {
                         },
                     ),
                 ],
-                TEST_NOW,
+                after_terminal_retention,
             )
             .expect("stale history is an obsolete merge outcome");
 
         assert!(stale.applied.is_empty());
         assert_eq!(stale.obsolete, 2);
-        assert_eq!(store.snapshot_at(TEST_NOW), [start]);
+        assert_eq!(store.snapshot_at(after_terminal_retention), [start]);
     }
 
     #[test]
@@ -735,32 +758,31 @@ mod tests {
 
             let merged = store
                 .merge_batch_at(vec![terminal.clone()], TEST_NOW)
-                .expect("terminal action should compact the full call");
+                .expect("terminal action should settle the full call");
             assert_eq!(merged.applied.as_slice(), std::slice::from_ref(&terminal));
-            assert_eq!(store.snapshot_at(TEST_NOW), [terminal]);
+            assert_eq!(store.snapshot_at(TEST_NOW).len(), MAX_EVENTS + 1);
+            assert_eq!(
+                store.snapshot_at(terminal.at + TERMINAL_RETENTION_MS + 1),
+                [terminal]
+            );
         }
     }
 
     #[test]
-    fn terminal_tombstones_do_not_consume_active_history_capacity() {
+    fn terminal_histories_do_not_consume_active_history_capacity() {
         let mut store = full_active_store();
+        let mut terminal = action_event("call-1-start", "call-1", CallToPlayAction::Start);
+        terminal.at = TEST_NOW + 2_000;
         store
-            .merge_batch_at(
-                vec![action_event(
-                    "call-1-start",
-                    "call-1",
-                    CallToPlayAction::Start,
-                )],
-                TEST_NOW,
-            )
-            .expect("start should compact active history");
+            .merge_batch_at(vec![terminal], TEST_NOW)
+            .expect("start should settle active history");
 
         let created = create_event_for("call-2", "call-2-create");
         let merged = store
             .merge_batch_at(vec![created.clone()], TEST_NOW)
-            .expect("terminal tombstone must not block a new active call");
+            .expect("terminal history must not block a new active call");
         assert_eq!(merged.applied, [created]);
-        assert_eq!(store.snapshot_at(TEST_NOW).len(), 2);
+        assert_eq!(store.snapshot_at(TEST_NOW).len(), MAX_EVENTS + 2);
     }
 
     #[test]
@@ -804,6 +826,55 @@ mod tests {
         assert!(store.snapshot_at(TEST_NOW).contains(&message));
     }
 
+    #[test]
+    fn terminal_history_preserves_roster_and_chat_for_display_window() {
+        let mut store = CallToPlayStore::default();
+        let message = action_event(
+            "message",
+            "call-1",
+            CallToPlayAction::SendMessage {
+                message_id: "message-1".to_string(),
+                text: "Launching now".to_string(),
+            },
+        );
+        let terminal = action_event("terminal", "call-1", CallToPlayAction::Start);
+        let history = vec![
+            create_event("create"),
+            action_event("rsvp", "call-1", CallToPlayAction::Rsvp),
+            message,
+            terminal.clone(),
+        ];
+        store
+            .merge_batch_at(history.clone(), TEST_NOW)
+            .expect("terminal history should merge");
+
+        let mut post_terminal = action_event(
+            "post-terminal",
+            "call-1",
+            CallToPlayAction::SendMessage {
+                message_id: "message-2".to_string(),
+                text: "Too late".to_string(),
+            },
+        );
+        post_terminal.at = terminal.at + 1;
+        let obsolete = store
+            .merge_batch_at(
+                vec![create_event("different-create"), post_terminal],
+                TEST_NOW,
+            )
+            .expect("terminal updates should be obsolete");
+        assert!(obsolete.applied.is_empty());
+        assert_eq!(obsolete.obsolete, 2);
+        assert_eq!(
+            store.snapshot_at(terminal.at + TERMINAL_RETENTION_MS),
+            history
+        );
+        assert_eq!(
+            store.snapshot_at(terminal.at + TERMINAL_RETENTION_MS + 1),
+            [terminal]
+        );
+    }
+
     #[test]
     fn only_failed_or_incomplete_deliveries_request_resync() {
         assert!(delivery_resync_reason(Err(())).is_some());

crates/lanspread-tauri-deno-ts/src/components/calltoplay/CallToPlayButton.tsx

@@ -1,4 +1,5 @@
 import { Icon } from '../Icon';
+import { activeCallCount } from '../../lib/callToPlay';
 import { Nomination } from '../../lib/types';
 
 interface Props {
@@ -7,7 +8,7 @@ interface Props {
 }
 
 export const CallToPlayButton = ({ nominations, onClick }: Props) => {
-    const activeCount = nominations.filter(nomination => nomination.state !== 'started').length;
+    const activeCount = activeCallCount(nominations);
     return (
         <button className="ctp-btn" onClick={onClick}>
             <Icon.flag />

crates/lanspread-tauri-deno-ts/src/components/calltoplay/CallToPlayOverlay.tsx

@@ -5,6 +5,7 @@ import { Modal } from '../Modal';
 import { CreateNominationForm } from './CreateNominationForm';
 import { NominationCard } from './NominationCard';
 import { CallToPlayActions } from '../../hooks/useCallToPlay';
+import { sortNominations } from '../../lib/callToPlay';
 import { Game, Nomination } from '../../lib/types';
 
 interface Props {
@@ -36,10 +37,7 @@ export const CallToPlayOverlay = ({
 }: Props) => {
     const [showCreate, setShowCreate] = useState(false);
     const gameById = new Map(games.map(game => [game.id, game]));
-    const sorted = [...nominations].sort((left, right) =>
-        Number(left.state === 'started') - Number(right.state === 'started')
-        || left.deadline - right.deadline
-    );
+    const sorted = sortNominations(nominations);
 
     return (
         <Modal onClose={onClose} className="ctp-modal">

crates/lanspread-tauri-deno-ts/src/components/calltoplay/CallToPlayTicker.tsx

@@ -22,6 +22,8 @@ interface Props {
 }
 
 const LABEL = {
+    running: 'Running',
+    cancelled: 'Cancelled',
     scheduled: 'Scheduled',
     call: 'Call to Play',
     soon: 'Starting soon',
@@ -29,7 +31,7 @@ const LABEL = {
     expired: 'Time’s up',
 } as const;
 
-type TickerStatus = Exclude<CallToPlayStatus, 'started'>;
+type TickerStatus = CallToPlayStatus;
 
 const RANK: Record<TickerStatus, number> = {
     expired: 0,
@@ -37,12 +39,12 @@ const RANK: Record<TickerStatus, number> = {
     soon: 2,
     call: 3,
     scheduled: 3,
+    running: 4,
+    cancelled: 4,
 };
 
-const tickerStatusOf = (nomination: Nomination, now: number): TickerStatus | null => {
-    const status = statusOf(nomination, now);
-    return status === 'started' ? null : status;
-};
+const tickerStatusOf = (nomination: Nomination, now: number): TickerStatus =>
+    statusOf(nomination, now);
 
 const MiniBubbles = ({ nomination, now }: { nomination: Nomination; now: number }) => {
     const entries = Object.entries(nomination.participants);
@@ -78,27 +80,37 @@ const MiniBubbles = ({ nomination, now }: { nomination: Nomination; now: number
 export const CallToPlayTicker = ({ nominations, games, accent, onOpen }: Props) => {
     const now = Date.now();
     const gameById = new Map(games.map(game => [game.id, game]));
-    const active = nominations.flatMap(nomination => {
-        const status = tickerStatusOf(nomination, now);
-        return status === null ? [] : [{ nomination, status }];
-    }).sort((left, right) =>
+    const rows = nominations.map(nomination => ({
+        nomination,
+        status: tickerStatusOf(nomination, now),
+    })).sort((left, right) =>
         RANK[left.status] - RANK[right.status]
         || left.nomination.deadline - right.nomination.deadline
     );
-    if (active.length === 0) return null;
+    if (rows.length === 0) return null;
 
     return (
         <div className="ctp-ticker-stack">
-            {active.map(({ nomination, status }) => {
+            {rows.map(({ nomination, status }) => {
                 const game = gameById.get(nomination.gameId);
                 const ready = readyCountOf(nomination, now);
                 const total = Object.keys(nomination.participants).length;
                 const remaining = Math.max(0, nomination.deadline - now);
                 const last = nomination.messages[nomination.messages.length - 1];
-                const count = status === 'scheduled'
+                const count = status === 'running' || status === 'cancelled'
+                    ? `${total} players`
+                    : status === 'scheduled'
                     ? `${total} in`
                     : `${ready}/${nomination.maxPlayers} ready`;
-                const time = status === 'ready'
+                const terminalElapsed = now - (nomination.terminalAt ?? now);
+                const terminalAge = terminalElapsed < 1_000
+                    ? 'just now'
+                    : `${formatCountdownShort(terminalElapsed)} ago`;
+                const time = status === 'running'
+                    ? `started ${terminalAge}`
+                    : status === 'cancelled'
+                    ? `cancelled ${terminalAge}`
+                    : status === 'ready'
                     ? 'waiting to start'
                     : status === 'expired'
                     ? `${formatCountdownShort(now - nomination.deadline)} ago · waiting for caller`

crates/lanspread-tauri-deno-ts/src/components/calltoplay/NominationCard.tsx

@@ -13,6 +13,7 @@ import {
     formatUntil,
     inCountOf,
     isReady,
+    isTerminal,
     phaseOf,
     readyCountOf,
     statusOf,
@@ -82,11 +83,13 @@ export const NominationCard = ({
     const isMe = myStatus !== undefined;
     const isCreator = nomination.creatorId === actorId;
     const isDone = nomination.state === 'done';
-    const isStarted = nomination.state === 'started';
+    const terminal = isTerminal(nomination);
+    const isRunning = nomination.state === 'running';
+    const isCancelled = nomination.state === 'cancelled';
     const isExpired = statusOf(nomination, now) === 'expired';
     const phase = phaseOf(nomination, now);
-    const isScheduled = phase === 'scheduled' && !isDone && !isStarted && !isExpired;
-    const isCheckin = phase === 'checkin' && !isDone && !isStarted && !isExpired;
+    const isScheduled = phase === 'scheduled' && !isDone && !terminal && !isExpired;
+    const isCheckin = phase === 'checkin' && !isDone && !terminal && !isExpired;
     const windowStart = nomination.scheduledFor === null
         ? nomination.createdAt
         : nomination.scheduledFor - CHECKIN_LEAD_MS;
@@ -101,8 +104,10 @@ export const NominationCard = ({
         : (game.installed_peer_count ?? game.peer_count) + (game.installed ? 1 : 0);
     const lanCount = Math.max(totalPeerCount + 1, installedCount);
 
-    const timer = isStarted
-        ? <div className="ctp-card-timer" data-urgency="off">Launching…</div>
+    const timer = isRunning
+        ? <div className="ctp-card-timer" data-urgency="off">Running</div>
+        : isCancelled
+        ? <div className="ctp-card-timer" data-urgency="off">Cancelled</div>
         : isExpired
         ? <div className="ctp-card-timer" data-urgency="high">Time’s up</div>
         : isDone
@@ -123,7 +128,9 @@ export const NominationCard = ({
         )
         : <div className="ctp-card-timer" data-urgency={urgency}>{formatCountdown(remaining)}</div>;
 
-    const rosterLabel = isScheduled
+    const rosterLabel = terminal
+        ? `${entries.length} players`
+        : isScheduled
         ? `${entries.length} in · up to ${nomination.maxPlayers} players`
         : isCheckin && inCount > 0
         ? `${readyCount}/${nomination.maxPlayers} ready · ${inCount} not checked in yet`
@@ -132,7 +139,7 @@ export const NominationCard = ({
     return (
         <div
             ref={cardRef}
-            className={`ctp-card ${isDone ? 'is-done' : ''} ${isExpired ? 'is-expired' : ''} ${isStarted ? 'is-started' : ''} ${isCheckin ? 'is-checkin' : ''} ${focused ? 'is-focused' : ''}`}
+            className={`ctp-card ${isDone ? 'is-done' : ''} ${isExpired ? 'is-expired' : ''} ${terminal ? 'is-terminal' : ''} ${isRunning ? 'is-running' : ''} ${isCancelled ? 'is-cancelled' : ''} ${isCheckin ? 'is-checkin' : ''} ${focused ? 'is-focused' : ''}`}
         >
             <div className="ctp-card-top">
                 <div className="ctp-card-cover">
@@ -168,10 +175,10 @@ export const NominationCard = ({
                     <div
                         className="ctp-progress-fill"
                         style={{
-                            width: `${isStarted || isDone ? 100 : percentage}%`,
-                            background: isExpired
+                            width: `${terminal || isDone ? 100 : percentage}%`,
+                            background: isExpired || isCancelled
                                 ? 'var(--danger)'
-                                : isStarted || isDone
+                                : terminal || isDone
                                 ? 'var(--ok)'
                                 : 'var(--accent)',
                         }}
@@ -211,11 +218,11 @@ export const NominationCard = ({
             <CtpChat
                 nomination={nomination}
                 actorId={actorId}
-                disabled={isStarted}
+                disabled={terminal}
                 onSend={text => actions.sendMessage(nomination.id, text)}
             />
 
-            {isCreator && !isStarted && (
+            {isCreator && !terminal && (
                 confirmCancel
                     ? (
                         <div className="ctp-cancel-confirm">
@@ -283,15 +290,19 @@ const CardActions = ({
     const isMe = myStatus !== undefined;
     const isCreator = nomination.creatorId === actorId;
     const isDone = nomination.state === 'done';
-    const isStarted = nomination.state === 'started';
+    const terminal = isTerminal(nomination);
     const isExpired = statusOf(nomination, now) === 'expired';
-    const scheduled = phaseOf(nomination, now) === 'scheduled' && !isDone && !isStarted;
+    const scheduled = phaseOf(nomination, now) === 'scheduled' && !isDone && !terminal;
     const readyCount = readyCountOf(nomination, now);
 
-    if (isStarted) {
+    if (terminal) {
         return (
-            <div className="ctp-note ctp-note-launch">
-                {game ? `Launching ${game.name}…` : 'The match is starting.'}
+            <div className="ctp-note">
+                {nomination.state === 'running'
+                    ? game
+                        ? `${game.name} is running.`
+                        : 'The match is running.'
+                    : 'This call was cancelled.'}
             </div>
         );
     }
@@ -331,7 +342,7 @@ const CardActions = ({
                         onClick={() => void actions.startNow(nomination.id).then(accepted => {
                             if (accepted && game) onLaunch(game);
                         })}
-                    ><Icon.play /><span>{game ? 'Start now' : 'Mark as started'}</span></button>
+                    ><Icon.play /><span>{game ? 'Start now' : 'Mark as running'}</span></button>
                     <button className="ghost-btn" onClick={() => actions.addTime(nomination.id)}>
                         Add 5 more minutes
                     </button>

crates/lanspread-tauri-deno-ts/src/hooks/useCallToPlay.ts

@@ -2,7 +2,11 @@ import { useCallback, useEffect, useMemo, useState } from 'react';
 import { invoke } from '@tauri-apps/api/core';
 import { listen, UnlistenFn } from '@tauri-apps/api/event';
 
-import { callToPlayEvent, reduceCallToPlayEvents } from '../lib/callToPlay';
+import {
+    callToPlayEvent,
+    pruneCallToPlayEvents,
+    reduceCallToPlayEvents,
+} from '../lib/callToPlay';
 import { CallToPlayAction, CallToPlayEvent, Nomination } from '../lib/types';
 
 export interface CallToPlayActions {
@@ -50,7 +54,11 @@ export const useCallToPlay = (username: string): UseCallToPlay => {
     const [error, setError] = useState<string | null>(null);
 
     useEffect(() => {
-        const timer = window.setInterval(() => setNow(Date.now()), 1_000);
+        const timer = window.setInterval(() => {
+            const current = Date.now();
+            setNow(current);
+            setEvents(previous => pruneCallToPlayEvents(previous, current));
+        }, 1_000);
         return () => window.clearInterval(timer);
     }, []);
 

crates/lanspread-tauri-deno-ts/src/lib/callToPlay.ts

@@ -6,14 +6,20 @@ import {
 } from './types';
 
 export const CHECKIN_LEAD_MS = 15 * 60_000;
-export const STARTED_RETENTION_MS = 3_000;
 export const EXPIRED_RETENTION_MS = 5 * 60_000;
+export const TERMINAL_RETENTION_MS = 15 * 60_000;
 
 export type CallToPlayPhase = 'now' | 'scheduled' | 'checkin';
-export type CallToPlayStatus = 'started' | 'expired' | 'ready' | 'soon' | 'scheduled' | 'call';
+export type CallToPlayStatus =
+    | 'running'
+    | 'cancelled'
+    | 'expired'
+    | 'ready'
+    | 'soon'
+    | 'scheduled'
+    | 'call';
 
 interface MutableNomination extends Nomination {
-    cancelled: boolean;
     messageIds: Set<string>;
 }
 
@@ -57,8 +63,30 @@ export const inCountOf = (nomination: Nomination, now: number): number =>
         !isReady(participant, now) && participant.status === 'in'
     ).length;
 
+export const isTerminal = (nomination: Nomination): boolean =>
+    nomination.state === 'running' || nomination.state === 'cancelled';
+
+export const activeCallCount = (nominations: ReadonlyArray<Nomination>): number =>
+    nominations.filter(nomination => !isTerminal(nomination)).length;
+
+export const sortNominations = (
+    nominations: ReadonlyArray<Nomination>,
+): Nomination[] => [...nominations].sort((left, right) => {
+    const terminalRank = Number(isTerminal(left)) - Number(isTerminal(right));
+    if (terminalRank !== 0) return terminalRank;
+    if (isTerminal(left) && isTerminal(right)) {
+        return (right.terminalAt ?? 0) - (left.terminalAt ?? 0)
+            || left.id.localeCompare(right.id);
+    }
+    return left.deadline - right.deadline
+        || right.createdAt - left.createdAt
+        || left.id.localeCompare(right.id);
+});
+
 export const statusOf = (nomination: Nomination, now: number): CallToPlayStatus => {
-    if (nomination.state === 'started') return 'started';
+    if (nomination.state === 'running' || nomination.state === 'cancelled') {
+        return nomination.state;
+    }
     if (now >= nomination.deadline) return 'expired';
     if (nomination.state === 'done' || readyCountOf(nomination, now) >= nomination.maxPlayers) {
         return 'ready';
@@ -71,6 +99,39 @@ export const reduceCallToPlayEvents = (
     input: ReadonlyArray<CallToPlayEvent>,
     now: number,
 ): Nomination[] => {
+    const nominations = [...groupEvents(input).values()]
+        .map(events => deriveNomination(events, now))
+        .filter((nomination): nomination is Nomination => nomination !== null);
+    return sortNominations(nominations);
+};
+
+export const pruneCallToPlayEvents = (
+    previous: ReadonlyMap<string, CallToPlayEvent>,
+    now: number,
+): ReadonlyMap<string, CallToPlayEvent> => {
+    const retiredEventIds = new Set<string>();
+    for (const events of groupEvents([...previous.values()]).values()) {
+        if (deriveNomination(events, now) !== null) continue;
+
+        const hasCreate = events.some(event => createPayload(event.action) !== null);
+        const expiredTombstone = events.some(event =>
+            (event.action === 'Start' || event.action === 'Cancel')
+            && now - event.at > TERMINAL_RETENTION_MS
+        );
+        if (hasCreate || expiredTombstone) {
+            for (const event of events) retiredEventIds.add(event.id);
+        }
+    }
+    if (retiredEventIds.size === 0) return previous;
+
+    const next = new Map(previous);
+    for (const eventId of retiredEventIds) next.delete(eventId);
+    return next;
+};
+
+const groupEvents = (
+    input: ReadonlyArray<CallToPlayEvent>,
+): Map<string, CallToPlayEvent[]> => {
     const unique = new Map(input.map(event => [event.id, event]));
     const byCall = new Map<string, CallToPlayEvent[]>();
     for (const event of unique.values()) {
@@ -78,67 +139,63 @@ export const reduceCallToPlayEvents = (
         events.push(event);
         byCall.set(event.call_id, events);
     }
+    return byCall;
+};
 
-    const nominations: Nomination[] = [];
-    for (const events of byCall.values()) {
-        events.sort(compareEvents);
-        const create = events.find(event => createPayload(event.action) !== null);
-        if (!create) continue;
-        const payload = createPayload(create.action);
-        if (!payload) continue;
+const deriveNomination = (
+    events: CallToPlayEvent[],
+    now: number,
+): Nomination | null => {
+    events.sort(compareEvents);
+    const create = events.find(event => createPayload(event.action) !== null);
+    if (!create) return null;
+    const payload = createPayload(create.action);
+    if (!payload) return null;
 
-        const nomination: MutableNomination = {
-            id: create.call_id,
-            gameId: payload.game_id,
-            creatorId: create.actor_id,
-            creator: create.actor_name,
-            maxPlayers: payload.max_players,
-            createdAt: create.at,
-            scheduledFor: payload.scheduled_for,
-            deadline: payload.deadline,
-            participants: {
-                [create.actor_id]: {
-                    name: create.actor_name,
-                    status: payload.scheduled_for === null ? 'ready' : 'in',
-                    joinedAt: create.at,
-                },
+    const nomination: MutableNomination = {
+        id: create.call_id,
+        gameId: payload.game_id,
+        creatorId: create.actor_id,
+        creator: create.actor_name,
+        maxPlayers: payload.max_players,
+        createdAt: create.at,
+        scheduledFor: payload.scheduled_for,
+        deadline: payload.deadline,
+        participants: {
+            [create.actor_id]: {
+                name: create.actor_name,
+                status: payload.scheduled_for === null ? 'ready' : 'in',
+                joinedAt: create.at,
             },
-            messages: [],
-            state: 'open',
-            cancelled: false,
-            messageIds: new Set(),
-        };
+        },
+        messages: [],
+        state: 'open',
+        terminalAt: null,
+        messageIds: new Set(),
+    };
 
-        for (const event of events) {
-            if (compareEvents(event, create) <= 0 || nomination.cancelled) continue;
-            applyEvent(nomination, event);
-        }
-
-        if (nomination.cancelled) continue;
-        if (nomination.state === 'open'
-            && (readyCountOf(nomination, now) >= nomination.maxPlayers || now >= nomination.deadline)
-        ) {
-            nomination.state = 'done';
-        }
-        if (nomination.state === 'started'
-            && now - (nomination.startedAt ?? now) > STARTED_RETENTION_MS
-        ) {
-            continue;
-        }
-        if (nomination.state !== 'started'
-            && now - nomination.deadline > EXPIRED_RETENTION_MS
-        ) {
-            continue;
-        }
-
-        const { cancelled: _, messageIds: __, ...result } = nomination;
-        nominations.push(result);
+    for (const event of events) {
+        if (compareEvents(event, create) > 0) applyEvent(nomination, event);
     }
 
-    return nominations.sort((a, b) => b.createdAt - a.createdAt || a.id.localeCompare(b.id));
+    if (nomination.state === 'open'
+        && (readyCountOf(nomination, now) >= nomination.maxPlayers || now >= nomination.deadline)
+    ) {
+        nomination.state = 'done';
+    }
+    if (isTerminal(nomination)) {
+        if (now - (nomination.terminalAt ?? now) > TERMINAL_RETENTION_MS) return null;
+    } else if (now - nomination.deadline > EXPIRED_RETENTION_MS) {
+        return null;
+    }
+
+    const { messageIds: _, ...result } = nomination;
+    return result;
 };
 
 const applyEvent = (nomination: MutableNomination, event: CallToPlayEvent): void => {
+    if (isTerminal(nomination)) return;
+
     const action = event.action;
     if (typeof action === 'string') {
         applyUnitAction(nomination, event, action);
@@ -147,7 +204,6 @@ const applyEvent = (nomination: MutableNomination, event: CallToPlayEvent): void
 
     const response = respondPayload(action);
     if (response) {
-        if (nomination.state === 'started') return;
         const existing = nomination.participants[event.actor_id];
         nomination.participants[event.actor_id] = {
             name: event.actor_name,
@@ -159,7 +215,7 @@ const applyEvent = (nomination: MutableNomination, event: CallToPlayEvent): void
     }
 
     const message = messagePayload(action);
-    if (message && nomination.state !== 'started' && !nomination.messageIds.has(message.message_id)) {
+    if (message && !nomination.messageIds.has(message.message_id)) {
         nomination.messageIds.add(message.message_id);
         nomination.messages.push({
             id: message.message_id,
@@ -175,7 +231,6 @@ const applyEvent = (nomination: MutableNomination, event: CallToPlayEvent): void
     const extension = addTimePayload(action);
     if (extension
         && event.actor_id === nomination.creatorId
-        && nomination.state !== 'started'
     ) {
         nomination.deadline = extension.deadline;
         nomination.state = 'open';
@@ -189,7 +244,6 @@ const applyUnitAction = (
 ): void => {
     switch (action) {
         case 'Rsvp': {
-            if (nomination.state === 'started') return;
             const existing = nomination.participants[event.actor_id];
             nomination.participants[event.actor_id] = {
                 name: event.actor_name,
@@ -199,19 +253,20 @@ const applyUnitAction = (
             break;
         }
         case 'Leave':
-            if (event.actor_id !== nomination.creatorId && nomination.state !== 'started') {
+            if (event.actor_id !== nomination.creatorId) {
                 delete nomination.participants[event.actor_id];
             }
             break;
         case 'Cancel':
-            if (event.actor_id === nomination.creatorId && nomination.state !== 'started') {
-                nomination.cancelled = true;
+            if (event.actor_id === nomination.creatorId) {
+                nomination.state = 'cancelled';
+                nomination.terminalAt = event.at;
             }
             break;
         case 'Start':
-            if (event.actor_id === nomination.creatorId && nomination.state !== 'started') {
-                nomination.state = 'started';
-                nomination.startedAt = event.at;
+            if (event.actor_id === nomination.creatorId) {
+                nomination.state = 'running';
+                nomination.terminalAt = event.at;
             }
             break;
     }

crates/lanspread-tauri-deno-ts/src/lib/types.ts

@@ -113,8 +113,8 @@ export interface Nomination {
     deadline: number;
     participants: Record<string, CallToPlayParticipant>;
     messages: CallToPlayMessage[];
-    state: 'open' | 'done' | 'started';
-    startedAt?: number;
+    state: 'open' | 'done' | 'running' | 'cancelled';
+    terminalAt: number | null;
 }
 
 export type CallToPlayAction =

crates/lanspread-tauri-deno-ts/src/styles/launcher.css

@@ -1920,7 +1920,9 @@
 }
 .ctp-card.is-done { border-color: color-mix(in srgb, var(--ok) 45%, var(--bd-2)); }
 .ctp-card.is-expired { border-color: color-mix(in srgb, var(--danger) 45%, var(--bd-2)); }
-.ctp-card.is-started { opacity: 0.6; }
+.ctp-card.is-terminal { opacity: 0.72; }
+.ctp-card.is-running { border-color: color-mix(in srgb, var(--ok) 35%, var(--bd-2)); }
+.ctp-card.is-cancelled { border-color: color-mix(in srgb, var(--danger) 35%, var(--bd-2)); }
 .ctp-card.is-focused { border-color: var(--accent); animation: ctp-cardflash 1.4s ease-out 1; }
 @keyframes ctp-cardflash {
   0%   { box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 55%, transparent); }
@@ -2213,7 +2215,7 @@
 /* ─── Quick-bar status variants — LED + label + row tint per status:
    SCHEDULED (neutral) · CALL TO PLAY (accent, pulsing) ·
    STARTING SOON (amber, glowing) · READY (green, steady) ·
-   TIME'S UP (red, steady) ─── */
+   TIME'S UP (red, steady) · RUNNING / CANCELLED (muted receipts) ─── */
 .ctp-ticker[data-status="scheduled"] {
   background: var(--bg-2);
   border-color: var(--bd-2);
@@ -2240,10 +2242,22 @@
   border-color: color-mix(in srgb, var(--danger) 45%, var(--bd-2));
 }
 .ctp-ticker[data-status="expired"]:hover { background: color-mix(in srgb, var(--danger) 13%, var(--bg-2)); }
+.ctp-ticker[data-status="running"] {
+  background: color-mix(in srgb, var(--ok) 5%, var(--bg-2));
+  border-color: color-mix(in srgb, var(--ok) 25%, var(--bd-2));
+}
+.ctp-ticker[data-status="running"]:hover { background: color-mix(in srgb, var(--ok) 9%, var(--bg-2)); }
+.ctp-ticker[data-status="cancelled"] {
+  background: color-mix(in srgb, var(--danger) 4%, var(--bg-2));
+  border-color: color-mix(in srgb, var(--danger) 22%, var(--bd-2));
+}
+.ctp-ticker[data-status="cancelled"]:hover { background: color-mix(in srgb, var(--danger) 8%, var(--bg-2)); }
 .ctp-ticker-dot[data-status="scheduled"] { background: var(--t-3); animation: none; box-shadow: none; }
 .ctp-ticker-dot[data-status="soon"] { background: var(--warn); animation: ctp-tickerpulse-warn 1.6s ease-out infinite; }
 .ctp-ticker-dot[data-status="ready"] { background: var(--ok); animation: none; box-shadow: 0 0 6px var(--ok); }
 .ctp-ticker-dot[data-status="expired"] { background: var(--danger); animation: none; box-shadow: none; }
+.ctp-ticker-dot[data-status="running"] { background: var(--ok); animation: none; box-shadow: none; opacity: 0.75; }
+.ctp-ticker-dot[data-status="cancelled"] { background: var(--danger); animation: none; box-shadow: none; opacity: 0.65; }
 @keyframes ctp-tickerpulse-warn {
   0%   { box-shadow: 0 0 0 0   color-mix(in srgb, var(--warn) 55%, transparent); }
   70%  { box-shadow: 0 0 0 6px transparent; }
@@ -2253,9 +2267,13 @@
 .ctp-ticker-label[data-status="soon"] { color: var(--warn); }
 .ctp-ticker-label[data-status="ready"] { color: var(--ok); }
 .ctp-ticker-label[data-status="expired"] { color: var(--danger); }
+.ctp-ticker-label[data-status="running"] { color: color-mix(in srgb, var(--ok) 75%, var(--t-2)); }
+.ctp-ticker-label[data-status="cancelled"] { color: color-mix(in srgb, var(--danger) 70%, var(--t-2)); }
 .ctp-ticker[data-status="soon"] .ctp-ticker-cta { color: var(--warn); }
 .ctp-ticker[data-status="ready"] .ctp-ticker-cta { color: var(--ok); }
 .ctp-ticker[data-status="expired"] .ctp-ticker-cta { color: var(--danger); }
+.ctp-ticker[data-status="running"] .ctp-ticker-cta,
+.ctp-ticker[data-status="cancelled"] .ctp-ticker-cta { color: var(--t-2); }
 
 /* ─── Quick-bar inline chat preview ─── */
 .ctp-ticker-chat {

crates/lanspread-tauri-deno-ts/tests/callToPlay.test.ts

@@ -1,11 +1,15 @@
 import {
     CHECKIN_LEAD_MS,
     EXPIRED_RETENTION_MS,
+    TERMINAL_RETENTION_MS,
+    activeCallCount,
     phaseOf,
     bumpTime,
     normalizeTimeInput,
+    pruneCallToPlayEvents,
     readyCountOf,
     reduceCallToPlayEvents,
+    sortNominations,
     statusOf,
 } from '../src/lib/callToPlay.ts';
 import { type CallToPlayAction, type CallToPlayEvent } from '../src/lib/types.ts';
@@ -148,13 +152,15 @@ Deno.test('creator can extend, start, and cancel a call', () => {
         create(),
         event('start', 'Alice', 'Start', NOW + 1),
     ], NOW + 2)[0];
-    assertEquals(started.state, 'started', 'creator start');
+    assertEquals(started.state, 'running', 'creator start');
+    assertEquals(started.terminalAt, NOW + 1, 'running timestamp');
 
-    const cancelled = reduceCallToPlayEvents([
+    const [cancelled] = reduceCallToPlayEvents([
         create(),
         event('cancel', 'Alice', 'Cancel', NOW + 1),
     ], NOW + 2);
-    assertEquals(cancelled.length, 0, 'creator cancel removes call');
+    assertEquals(cancelled.state, 'cancelled', 'creator cancel');
+    assertEquals(cancelled.terminalAt, NOW + 1, 'cancel timestamp');
 });
 
 Deno.test('reduction is order-independent and deduplicates events and messages', () => {
@@ -181,10 +187,75 @@ Deno.test('actions timestamped before creation cannot mutate a call', () => {
     assertEquals(Object.keys(nomination.participants).length, 1, 'pre-creation response ignored');
 });
 
-Deno.test('started calls expire from local presentation history', () => {
-    const events = [create(), event('start', 'Alice', 'Start', NOW + 1)];
-    assertEquals(reduceCallToPlayEvents(events, NOW + 2).length, 1, 'fresh started call remains');
-    assertEquals(reduceCallToPlayEvents(events, NOW + 5_000).length, 0, 'old started call expires');
+Deno.test('terminal calls retain complete read-only history for fifteen minutes', () => {
+    const events = [
+        create(),
+        event('join', 'Bob', { Respond: { ready_at: null } }, NOW + 1),
+        event('message', 'Bob', {
+            SendMessage: { message_id: 'message-1', text: 'Launching' },
+        }, NOW + 2),
+        event('start', 'Alice', 'Start', NOW + 3),
+        event('late-message', 'Bob', {
+            SendMessage: { message_id: 'message-2', text: 'Too late' },
+        }, NOW + 4),
+    ];
+    const [running] = reduceCallToPlayEvents(events, NOW + TERMINAL_RETENTION_MS);
+    assertEquals(running.state, 'running', 'running receipt remains');
+    assertEquals(Object.keys(running.participants).length, 2, 'terminal roster retained');
+    assertEquals(running.messages.length, 1, 'pre-terminal chat retained');
+    assertEquals(
+        reduceCallToPlayEvents(events, NOW + 3 + TERMINAL_RETENTION_MS + 1).length,
+        0,
+        'terminal receipt retires after display window',
+    );
+});
+
+Deno.test('terminal calls sort last and do not contribute to the badge', () => {
+    const active = reduceCallToPlayEvents([create()], NOW)[0];
+    const running = reduceCallToPlayEvents([
+        create(),
+        event('start', 'Alice', 'Start', NOW + 1),
+    ], NOW + 2)[0];
+    const cancelled = reduceCallToPlayEvents([
+        create(),
+        event('cancel', 'Alice', 'Cancel', NOW + 2),
+    ], NOW + 3)[0];
+
+    const sorted = sortNominations([running, cancelled, active]);
+    assertEquals(sorted[0].state, 'open', 'actionable call sorts first');
+    assertEquals(activeCallCount(sorted), 1, 'terminal calls excluded from badge');
+    assertEquals(statusOf(running, NOW + 2), 'running', 'running ticker status');
+    assertEquals(statusOf(cancelled, NOW + 3), 'cancelled', 'cancelled ticker status');
+});
+
+Deno.test('retired calls are pruned from the frontend raw event map', () => {
+    const terminalEvents = [
+        create(),
+        event('start', 'Alice', 'Start', NOW + 1),
+    ];
+    const map = new Map(terminalEvents.map(item => [item.id, item]));
+
+    assertEquals(
+        pruneCallToPlayEvents(map, NOW + 1 + TERMINAL_RETENTION_MS).size,
+        2,
+        'visible terminal history stays cached',
+    );
+    assertEquals(
+        pruneCallToPlayEvents(map, NOW + 1 + TERMINAL_RETENTION_MS + 1).size,
+        0,
+        'retired terminal history is pruned',
+    );
+
+    const tombstone = event('terminal-only', 'Alice', 'Cancel', NOW + 1);
+    const tombstoneMap = new Map([[tombstone.id, tombstone]]);
+    assertEquals(
+        pruneCallToPlayEvents(
+            tombstoneMap,
+            NOW + 1 + TERMINAL_RETENTION_MS + 1,
+        ).size,
+        0,
+        'backend tombstone is pruned too',
+    );
 });
 
 Deno.test('scheduled time input accepts design formats and wraps steppers', () => {