diff --git a/crates/protocol/src/lib.rs b/crates/protocol/src/lib.rs
index 2c42b5161..17f8722bc 100644
--- a/crates/protocol/src/lib.rs
+++ b/crates/protocol/src/lib.rs
@@ -1054,6 +1054,23 @@ pub enum SessionSnapshotEntryData {
         source: RunResumeSource,
         active_run_turn_count: usize,
     },
+    /// Snapshot-only replay of persisted invocation/usage records. These are
+    /// accounting metadata, never model context or conversation rows.
+    Invoke {
+        trigger: InvokeKind,
+    },
+    Usage {
+        input_tokens: u64,
+        cache_read_input_tokens: u64,
+        output_tokens: u64,
+    },
+    /// Display-only accounting reconstructed from persisted run/usage records.
+    RunStats {
+        elapsed_ms: u64,
+        requests: u64,
+        upload_tokens: u64,
+        output_tokens: u64,
+    },
     /// Durable terminal for an intentional cancellation. Consumers must not
     /// present this lifecycle result as an execution failure.
     RunCancelled,
@@ -1177,6 +1194,9 @@ pub enum Event {
     /// following `UserMessage` / `SystemItem` event.
     InvokeStart {
         kind: InvokeKind,
+        /// Timestamp of the persisted Invoke, not the client's attach time.
+        #[serde(default, skip_serializing_if = "Option::is_none")]
+        timestamp_ms: Option<u64>,
     },
     /// One AgentTurn boundary opened. An AgentTurn is a maximal run of
     /// LLM generation calls whose input messages are identical (i.e.
@@ -1293,6 +1313,9 @@ pub enum Event {
     /// actually paid full price to send on this request, which is what
     /// the TUI status line accumulates per turn.
     Usage {
+        /// Present for usage delivered from the committed session-log lane.
+        #[serde(default, skip_serializing_if = "Option::is_none")]
+        timestamp_ms: Option<u64>,
         input_tokens: Option<u64>,
         output_tokens: Option<u64>,
         #[serde(default, skip_serializing_if = "Option::is_none")]
@@ -2335,19 +2358,29 @@ mod tests {
             InvokeKind::SystemReminder,
             InvokeKind::Wakeup,
         ] {
-            let event = Event::InvokeStart { kind };
+            let event = Event::InvokeStart {
+                kind,
+                timestamp_ms: Some(1234),
+            };
             let json = serde_json::to_string(&event).unwrap();
             let parsed: serde_json::Value = serde_json::from_str(&json).unwrap();
             assert_eq!(parsed["event"], "invoke_start");
             let decoded: Event = serde_json::from_str(&json).unwrap();
             match decoded {
-                Event::InvokeStart { kind: k } => assert_eq!(k, kind),
+                Event::InvokeStart {
+                    kind: k,
+                    timestamp_ms,
+                } => {
+                    assert_eq!(k, kind);
+                    assert_eq!(timestamp_ms, Some(1234));
+                }
                 other => panic!("expected InvokeStart, got {other:?}"),
             }
         }
         let parsed: serde_json::Value = serde_json::from_str(
             &serde_json::to_string(&Event::InvokeStart {
                 kind: InvokeKind::UserSend,
+                timestamp_ms: None,
             })
             .unwrap(),
         )
diff --git a/crates/session-store/src/public_snapshot.rs b/crates/session-store/src/public_snapshot.rs
index 6c305793a..12cb198b3 100644
--- a/crates/session-store/src/public_snapshot.rs
+++ b/crates/session-store/src/public_snapshot.rs
@@ -1,3 +1,5 @@
+mod run_stats;
+
 use base64::{Engine as _, engine::general_purpose::URL_SAFE_NO_PAD};
 use protocol::{
     Segment, SessionContentPart, SessionConversationTurn, SessionEntryProvenance,
@@ -850,6 +852,17 @@ fn read_history_turns_backward(
     let mut pending_entries = Vec::new();
     let mut seen_entries = HashSet::new();
     let mut corrections = HashMap::<String, SessionSnapshotEntryData>::new();
+    // Accounting needs the whole Invoke range, including the marker immediately
+    // before the oldest user entry on this page. The existing scan budgets also
+    // bound this suffix; no unbounded second pass over the Session is needed.
+    let mut accounting_records = Vec::new();
+    let finish = |mut turns: Vec<PositionedHistoryTurn>, records: &[LogEntry]| {
+        let stats = run_stats::project(records.iter().rev());
+        for turn in &mut turns {
+            run_stats::append_to(&mut turn.turn.entries, &stats);
+        }
+        turns
+    };
 
     // Carry only bounded log positions, never correction text or image bodies,
     // across pages. Re-read and validate the referenced records from adopted
@@ -994,11 +1007,58 @@ fn read_history_turns_backward(
                 &mut pending_entries,
                 &mut turns,
             ) {
-                return Ok(turns);
+                return Ok(finish(turns, &accounting_records));
             }
             continue;
         }
 
+        // TurnEnd is the lineage boundary, but Worker persists final usage and
+        // the run outcome immediately after it. For a compacted ancestor, read
+        // only this accounting tail, never adopt later conversation records.
+        if before_offset == adopted_end
+            && segment_index > 0
+            && matches!(
+                lineage[segment_index - 1].origin.as_ref().map(|o| o.kind),
+                Some(LineageOriginKind::Compact)
+            )
+        {
+            let mut offset = adopted_end;
+            let mut tail = Vec::new();
+            while offset < segment.file_len {
+                let (record, bytes) = store
+                    .read_next_log_record_read_only_bounded(
+                        session_id,
+                        segment.segment_id,
+                        offset,
+                        limits.max_scan_bytes.saturating_sub(*scanned_bytes),
+                    )
+                    .map_err(map_history_store_error)?;
+                *scanned_bytes = scanned_bytes
+                    .checked_add(bytes)
+                    .ok_or(RetainedHistoryReadError::ResourceLimit)?;
+                let Some(record) = record else { break };
+                *scanned_entries = scanned_entries
+                    .checked_add(persisted_entry_units(std::slice::from_ref(&record.entry)))
+                    .ok_or(RetainedHistoryReadError::ResourceLimit)?;
+                if *scanned_entries > limits.max_entries {
+                    return Err(RetainedHistoryReadError::ResourceLimit);
+                }
+                offset = record.end_offset;
+                match record.entry {
+                    entry @ LogEntry::LlmUsage { .. } => tail.push(entry),
+                    LogEntry::Extension { .. } => {}
+                    entry @ (LogEntry::RunCompleted { .. }
+                    | LogEntry::RunYielded { .. }
+                    | LogEntry::RunCancelled { .. }
+                    | LogEntry::RunErrored { .. }) => {
+                        tail.push(entry);
+                        break;
+                    }
+                    _ => break,
+                }
+            }
+            accounting_records.extend(tail.into_iter().rev());
+        }
         let mut reader = store
             .open_retained_segment_reader(session_id, segment.segment_id, before_offset)
             .map_err(map_history_store_error)?;
@@ -1025,6 +1085,16 @@ fn read_history_turns_backward(
                 }
                 continue;
             }
+            let at_invoke = matches!(record.entry, LogEntry::Invoke { .. });
+            accounting_records.push(record.entry.clone());
+            if turns.len() >= turn_limit {
+                if at_invoke {
+                    return Ok(finish(turns, &accounting_records));
+                }
+                // Older records here supply accounting only, never additional
+                // conversation turns beyond the requested page boundary.
+                continue;
+            }
             if capture_tool_correction(&record.entry, &mut corrections) {
                 let LogEntry::ToolResultCorrected { entry, .. } = &record.entry else {
                     unreachable!()
@@ -1044,7 +1114,7 @@ fn read_history_turns_backward(
                 &project_history_record(session_id, segment.segment_id, &record.entry),
                 &corrections,
             );
-            if collect_history_entries_backward(
+            collect_history_entries_backward(
                 &entries,
                 segment.segment_id,
                 record.start_offset,
@@ -1054,12 +1124,11 @@ fn read_history_turns_backward(
                 &mut seen_entries,
                 &mut pending_entries,
                 &mut turns,
-            ) {
-                return Ok(turns);
-            }
+            );
         }
 
-        if segment_index + 1 == lineage.len()
+        if turns.len() < turn_limit
+            && segment_index + 1 == lineage.len()
             && collect_history_entries_backward(
                 &corrected_history_entries(&segment.seed_entries, &corrections),
                 segment.segment_id,
@@ -1072,10 +1141,10 @@ fn read_history_turns_backward(
                 &mut turns,
             )
         {
-            return Ok(turns);
+            return Ok(finish(turns, &accounting_records));
         }
     }
-    Ok(turns)
+    Ok(finish(turns, &accounting_records))
 }
 
 fn capture_tool_correction(
@@ -1322,6 +1391,148 @@ pub fn project_current_session_snapshot(log: &[LogEntry]) -> SessionSnapshot {
     project_session_snapshot(session_id.unwrap_or_else(SessionId::nil), log)
 }
 
+fn run_accounting_entries(session_id: &SessionId, log: &[LogEntry]) -> Vec<SessionSnapshotEntry> {
+    let start = log
+        .iter()
+        .rposition(|entry| matches!(entry, LogEntry::Invoke { .. }))
+        .unwrap_or(0);
+    log.iter()
+        .enumerate()
+        .skip(start)
+        .filter_map(|(index, record)| {
+            let (ts, data) = match record {
+                LogEntry::Invoke { ts, trigger } => {
+                    (*ts, SessionSnapshotEntryData::Invoke { trigger: *trigger })
+                }
+                LogEntry::LlmUsage {
+                    ts,
+                    input_total_tokens,
+                    cache_read_tokens,
+                    output_tokens,
+                    ..
+                } => (
+                    *ts,
+                    SessionSnapshotEntryData::Usage {
+                        input_tokens: *input_total_tokens,
+                        cache_read_input_tokens: *cache_read_tokens,
+                        output_tokens: *output_tokens,
+                    },
+                ),
+                _ => return None,
+            };
+            Some(legacy_entry(session_id, None, index, 0, ts, data))
+        })
+        .collect()
+}
+
+/// Reconstruct snapshot accounting from existing compacted ancestors, without a
+/// second accumulator or checkpoint. The live suffix is the caller's frozen
+/// mirror prefix; never reread the active segment after subscribing.
+pub fn project_current_session_snapshot_with_accounting(
+    store: &dyn crate::Store,
+    log: &[LogEntry],
+) -> SessionSnapshot {
+    let mut snapshot = project_current_session_snapshot(log);
+    let session_id = log
+        .iter()
+        .find_map(|entry| match entry {
+            LogEntry::AnnotatedSegmentStart { session_id, .. } => Some(*session_id),
+            _ => None,
+        })
+        .unwrap_or_else(SessionId::nil);
+    snapshot
+        .entries
+        .extend(run_accounting_entries(&session_id, log));
+    if log
+        .iter()
+        .any(|entry| matches!(entry, LogEntry::Invoke { .. }))
+    {
+        return snapshot;
+    }
+    let mut source = log.to_vec();
+    let mut ancestors = Vec::new();
+    let mut visited = HashSet::new();
+    let mut count = log.len();
+    for _ in 0..DEFAULT_RETAINED_HISTORY_MAX_SEGMENTS {
+        let Some((session_id, origin)) = source.iter().find_map(|entry| match entry {
+            LogEntry::AnnotatedSegmentStart {
+                session_id,
+                compacted_from: Some(origin),
+                ..
+            } => Some((*session_id, origin.clone())),
+            _ => None,
+        }) else {
+            break;
+        };
+        if !visited.insert(origin.segment_id) {
+            break;
+        }
+        let Ok(mut entries) = store.read_all(session_id, origin.segment_id) else {
+            break;
+        };
+        count = count.saturating_add(entries.len());
+        if count > DEFAULT_RETAINED_HISTORY_MAX_ENTRIES {
+            break;
+        }
+        // Compaction adopts through TurnEnd plus its trailing usage/outcome,
+        // never through a subsequent Invoke or unrelated conversation.
+        if let Some(end) = entries.iter().position(|entry| {
+            matches!(entry, LogEntry::TurnEnd { turn_count, .. } if *turn_count == origin.at_turn_index)
+        }) {
+            let mut cutoff = end + 1;
+            while cutoff < entries.len()
+                && matches!(entries[cutoff],
+                    LogEntry::LlmUsage { .. } | LogEntry::Extension { .. }
+                    | LogEntry::RunCompleted { .. } | LogEntry::RunYielded { .. }
+                    | LogEntry::RunErrored { .. } | LogEntry::RunCancelled { .. })
+            {
+                cutoff += 1;
+            }
+            entries.truncate(cutoff);
+        } else if matches!(entries.first(), Some(LogEntry::AnnotatedSegmentStart {
+            compacted_from: Some(inherited), ..
+        }) if origin.at_turn_index <= inherited.at_turn_index) {
+            // Consecutive compactions can adopt only the inherited seed.
+            entries.truncate(1);
+        } else {
+            break;
+        }
+        let complete = entries
+            .iter()
+            .any(|entry| matches!(entry, LogEntry::Invoke { .. }));
+        source = entries.clone();
+        ancestors.push(entries);
+        if complete {
+            break;
+        }
+    }
+    if !ancestors.is_empty() {
+        let combined: Vec<LogEntry> = ancestors
+            .into_iter()
+            .rev()
+            .flatten()
+            .chain(log.iter().cloned())
+            .collect();
+        snapshot.entries.retain(|entry| {
+            !matches!(
+                entry.data,
+                SessionSnapshotEntryData::Invoke { .. } | SessionSnapshotEntryData::Usage { .. }
+            )
+        });
+        let session_id = log
+            .iter()
+            .find_map(|entry| match entry {
+                LogEntry::AnnotatedSegmentStart { session_id, .. } => Some(*session_id),
+                _ => None,
+            })
+            .unwrap_or_else(SessionId::nil);
+        snapshot
+            .entries
+            .extend(run_accounting_entries(&session_id, &combined));
+    }
+    snapshot
+}
+
 /// Project the current durable segment into the only public session-history
 /// representation. Append-log records remain an internal persistence format.
 pub fn project_session_snapshot(session_id: SessionId, log: &[LogEntry]) -> SessionSnapshot {
@@ -1523,6 +1734,7 @@ pub(crate) fn project_session_snapshot_for_segment(
         }
     }
 
+    run_stats::append_to(&mut entries, &run_stats::project(log));
     SessionSnapshot {
         pending_submissions: protocol::PendingSubmissionsSnapshot::default(),
         entries,
@@ -1800,6 +2012,258 @@ mod tests {
         LoggedWorkerSubject, Store, WorkerMetadataStore,
     };
 
+    fn usage(ts: u64) -> LogEntry {
+        LogEntry::LlmUsage {
+            ts,
+            history_len: 2,
+            input_total_tokens: 2500,
+            cache_read_tokens: 1000,
+            cache_write_tokens: 0,
+            output_tokens: 200,
+        }
+    }
+
+    fn complete(ts: u64) -> LogEntry {
+        LogEntry::RunCompleted {
+            ts,
+            interrupted: false,
+            result: agen::EngineResult::Finished,
+            active_run_turn_count: None,
+        }
+    }
+
+    fn stats_entries(entries: &[SessionSnapshotEntry]) -> Vec<SessionSnapshotEntry> {
+        entries
+            .iter()
+            .filter(|entry| matches!(entry.data, SessionSnapshotEntryData::RunStats { .. }))
+            .cloned()
+            .collect()
+    }
+
+    #[test]
+    fn run_stats_restore_identically_from_snapshot_and_history_pages() {
+        let session_id = SessionId::now_v7();
+        let segment_id = SegmentId::now_v7();
+        let mut log = vec![segment_start(session_id, vec![], None, None)];
+        for turn in 1..=6 {
+            append_turn(&mut log, turn);
+            log.push(usage(turn as u64 * 10 + 4));
+            log.push(complete(turn as u64 * 10 + 8));
+        }
+        let expected = stats_entries(&project_current_session_snapshot(&log).entries);
+        assert_eq!(expected.len(), 6);
+        assert_eq!(
+            expected[0].data,
+            SessionSnapshotEntryData::RunStats {
+                elapsed_ms: 8,
+                requests: 1,
+                upload_tokens: 1500,
+                output_tokens: 200,
+            }
+        );
+        let (_root, path) =
+            persist_history_fixture("stats", session_id, segment_id, vec![(segment_id, log)]);
+        let mut cursor = None;
+        let mut actual = Vec::new();
+        loop {
+            let page = read_retained_session_history_page(
+                &path,
+                "stats",
+                cursor.as_deref(),
+                Some(1),
+                RetainedHistoryReadLimits::default(),
+            )
+            .unwrap();
+            assert_eq!(page.turns.len(), 1);
+            actual.splice(0..0, stats_entries(&page.turns[0].entries));
+            cursor = page.next_cursor;
+            if !page.has_more {
+                break;
+            }
+        }
+        assert_eq!(actual, expected);
+    }
+
+    #[test]
+    fn run_stats_span_compaction_without_counting_seed_history_twice() {
+        let session_id = SessionId::now_v7();
+        let source_id = SegmentId::now_v7();
+        let active_id = SegmentId::now_v7();
+        let mut source = vec![segment_start(session_id, vec![], None, None)];
+        append_turn(&mut source, 1);
+        source.push(usage(15));
+        source.push(LogEntry::RunYielded {
+            ts: 16,
+            entry_id: None,
+            reason: protocol::RunYieldReason::Compaction,
+            active_run_turn_count: 1,
+        });
+        let active = vec![
+            segment_start(
+                session_id,
+                vec![user_message(1), assistant_message(1, "final")],
+                None,
+                Some(SegmentOrigin {
+                    segment_id: source_id,
+                    at_turn_index: 1,
+                }),
+            ),
+            LogEntry::RunResumed {
+                ts: 20,
+                entry_id: None,
+                source: protocol::RunResumeSource::Compaction,
+                active_run_turn_count: 1,
+            },
+            usage(25),
+            LogEntry::AnnotatedAssistantItem {
+                ts: 28,
+                entry: assistant_message(1, "after-compact"),
+            },
+            complete(30),
+        ];
+        assert!(
+            stats_entries(&project_current_session_snapshot(&active).entries).is_empty(),
+            "a partial segment must not invent the missing start or traffic"
+        );
+        let (_root, path) = persist_history_fixture(
+            "stats",
+            session_id,
+            active_id,
+            vec![(source_id, source), (active_id, active)],
+        );
+        let page = read_retained_session_history_page(
+            &path,
+            "stats",
+            None,
+            Some(1),
+            RetainedHistoryReadLimits::default(),
+        )
+        .unwrap();
+        let stats = stats_entries(&page.turns[0].entries);
+        assert_eq!(stats.len(), 1);
+        assert_eq!(stats[0].entry_id, "run-stats:assistant-1-after-compact");
+        assert_eq!(
+            stats[0].data,
+            SessionSnapshotEntryData::RunStats {
+                elapsed_ms: 20,
+                requests: 2,
+                upload_tokens: 3000,
+                output_tokens: 400,
+            }
+        );
+    }
+
+    #[test]
+    fn reconnect_accounting_replays_existing_usage_across_compaction() {
+        let session_id = SessionId::now_v7();
+        let source_id = SegmentId::now_v7();
+        let active_id = SegmentId::now_v7();
+        let mut source = vec![segment_start(session_id, vec![], None, None)];
+        append_turn(&mut source, 1);
+        source.push(usage(15));
+        let active = vec![
+            segment_start(
+                session_id,
+                vec![],
+                None,
+                Some(SegmentOrigin {
+                    segment_id: source_id,
+                    at_turn_index: 1,
+                }),
+            ),
+            usage(25),
+        ];
+        let (_root, path) = persist_history_fixture(
+            "accounting",
+            session_id,
+            active_id,
+            vec![(source_id, source), (active_id, active.clone())],
+        );
+        let store = WorkerSessionStore::new(path.join("session")).unwrap();
+        let snapshot = project_current_session_snapshot_with_accounting(&store, &active);
+        let records: Vec<_> = snapshot
+            .entries
+            .iter()
+            .filter(|entry| {
+                matches!(
+                    entry.data,
+                    SessionSnapshotEntryData::Invoke { .. }
+                        | SessionSnapshotEntryData::Usage { .. }
+                )
+            })
+            .collect();
+        assert_eq!(records.len(), 3);
+        assert_eq!(
+            records
+                .iter()
+                .map(|entry| entry.timestamp)
+                .collect::<Vec<_>>(),
+            [10, 15, 25]
+        );
+        assert!(matches!(
+            records[0].data,
+            SessionSnapshotEntryData::Invoke {
+                trigger: InvokeKind::UserSend
+            }
+        ));
+        assert!(matches!(
+            records[1].data,
+            SessionSnapshotEntryData::Usage {
+                input_tokens: 2500,
+                cache_read_input_tokens: 1000,
+                output_tokens: 200
+            }
+        ));
+        assert!(matches!(
+            records[2].data,
+            SessionSnapshotEntryData::Usage {
+                input_tokens: 2500,
+                cache_read_input_tokens: 1000,
+                output_tokens: 200
+            }
+        ));
+
+        // A second compaction can adopt only the first one's inherited seed.
+        // Its unadopted usage must not leak into the restored totals.
+        let next = vec![
+            segment_start(
+                session_id,
+                vec![],
+                None,
+                Some(SegmentOrigin {
+                    segment_id: active_id,
+                    at_turn_index: 1,
+                }),
+            ),
+            usage(35),
+        ];
+        let snapshot = project_current_session_snapshot_with_accounting(&store, &next);
+        let timestamps: Vec<_> = snapshot
+            .entries
+            .iter()
+            .filter_map(|entry| {
+                matches!(
+                    entry.data,
+                    SessionSnapshotEntryData::Invoke { .. }
+                        | SessionSnapshotEntryData::Usage { .. }
+                )
+                .then_some(entry.timestamp)
+            })
+            .collect();
+        assert_eq!(timestamps, [10, 15, 35]);
+    }
+
+    #[test]
+    fn run_stats_do_not_complete_an_active_or_unmeasured_run() {
+        let mut log = Vec::new();
+        append_turn(&mut log, 1);
+        log.push(usage(15));
+        assert!(stats_entries(&project_current_session_snapshot(&log).entries).is_empty());
+        log.pop();
+        log.push(complete(20));
+        assert!(stats_entries(&project_current_session_snapshot(&log).entries).is_empty());
+    }
+
     fn history_message(
         entry_id: impl Into<String>,
         role: LoggedRole,
diff --git a/crates/session-store/src/public_snapshot/run_stats.rs b/crates/session-store/src/public_snapshot/run_stats.rs
new file mode 100644
index 000000000..2d5b49902
--- /dev/null
+++ b/crates/session-store/src/public_snapshot/run_stats.rs
@@ -0,0 +1,133 @@
+//! Display-only accounting; never inserted into model history or written back
+//! to the journal. Both snapshot and bounded history paging use this projection.
+use std::collections::HashMap;
+
+use protocol::{SessionEntryProvenance, SessionSnapshotEntry, SessionSnapshotEntryData};
+
+use crate::LogEntry;
+
+#[derive(Default)]
+struct Activity {
+    started_at: u64,
+    requests: u64,
+    upload: u64,
+    output: u64,
+    anchor: Option<String>,
+}
+
+pub(super) fn project<'a>(
+    records: impl IntoIterator<Item = &'a LogEntry>,
+) -> HashMap<String, SessionSnapshotEntry> {
+    let mut active: Option<Activity> = None;
+    let mut stats = HashMap::new();
+    for record in records {
+        match record {
+            LogEntry::Invoke { ts, .. } => {
+                active = Some(Activity {
+                    started_at: *ts,
+                    ..Activity::default()
+                })
+            }
+            LogEntry::LlmUsage {
+                input_total_tokens,
+                cache_read_tokens,
+                output_tokens,
+                ..
+            } => {
+                if let Some(run) = &mut active {
+                    run.requests += 1;
+                    run.upload = run
+                        .upload
+                        .saturating_add(input_total_tokens.saturating_sub(*cache_read_tokens));
+                    run.output = run.output.saturating_add(*output_tokens);
+                }
+            }
+            LogEntry::AnnotatedUserInput { history, .. } => {
+                if let Some(run) = &mut active {
+                    for entry in history {
+                        if super::project_item(&entry.metadata.entry_id.0, &entry.item).is_some() {
+                            run.anchor = Some(entry.metadata.entry_id.0.clone());
+                        }
+                    }
+                }
+            }
+            LogEntry::AnnotatedAssistantItem { entry, .. }
+            | LogEntry::AnnotatedToolResult { entry, .. } => {
+                if let Some(run) = &mut active
+                    && super::project_item(&entry.metadata.entry_id.0, &entry.item).is_some()
+                {
+                    run.anchor = Some(entry.metadata.entry_id.0.clone());
+                }
+            }
+            LogEntry::AnnotatedSystemItem { entry, .. } => {
+                if let Some(run) = &mut active {
+                    run.anchor = Some(entry.metadata.entry_id.0.clone());
+                }
+            }
+            LogEntry::RunCompleted { ts, result, .. }
+                if !matches!(result, agen::EngineResult::Yielded) =>
+            {
+                finish(&active, *ts, &mut stats);
+                // Pause/resume retains the Invoke's cumulative accounting, just
+                // like the live TUI. Terminal outcomes cannot leak traffic into
+                // a later resumed segment whose Invoke is unavailable.
+                if !matches!(result, agen::EngineResult::Paused) {
+                    active = None;
+                }
+            }
+            LogEntry::RunCancelled { ts, .. } | LogEntry::RunErrored { ts, .. } => {
+                finish(&active, *ts, &mut stats);
+                active = None;
+            }
+            // Compaction seeds repeat retained entries, not fresh traffic.
+            // A page traverses adopted lineage in journal order and retains the
+            // open Invoke across these checkpoints. A standalone new segment
+            // without that Invoke cannot claim complete accounting.
+            _ => {}
+        }
+    }
+    stats
+}
+
+fn finish(
+    active: &Option<Activity>,
+    ended_at: u64,
+    stats: &mut HashMap<String, SessionSnapshotEntry>,
+) {
+    let Some(run) = active else { return };
+    let Some(anchor) = &run.anchor else { return };
+    // No usage records means unavailable measurement, not known zero traffic.
+    if run.requests == 0 {
+        return;
+    }
+    stats.insert(
+        anchor.clone(),
+        SessionSnapshotEntry {
+            entry_id: format!("run-stats:{anchor}"),
+            timestamp: ended_at,
+            provenance: SessionEntryProvenance::LegacyUnknown,
+            derived_from: vec![anchor.clone()],
+            data: SessionSnapshotEntryData::RunStats {
+                elapsed_ms: ended_at.saturating_sub(run.started_at),
+                requests: run.requests,
+                upload_tokens: run.upload,
+                output_tokens: run.output,
+            },
+        },
+    );
+}
+
+pub(super) fn append_to(
+    entries: &mut Vec<SessionSnapshotEntry>,
+    stats: &HashMap<String, SessionSnapshotEntry>,
+) {
+    let mut with_stats = Vec::with_capacity(entries.len());
+    for entry in std::mem::take(entries) {
+        let summary = stats.get(&entry.entry_id);
+        with_stats.push(entry);
+        if let Some(summary) = summary {
+            with_stats.push(summary.clone());
+        }
+    }
+    *entries = with_stats;
+}
diff --git a/crates/tui/src/app.rs b/crates/tui/src/app.rs
index b856c0867..5114ee199 100644
--- a/crates/tui/src/app.rs
+++ b/crates/tui/src/app.rs
@@ -1741,6 +1741,7 @@ impl App {
                 input_tokens,
                 output_tokens,
                 cache_read_input_tokens,
+                ..
             } => {
                 if let Some(input_tokens) = input_tokens {
                     self.session_context_tokens = input_tokens;
@@ -3000,7 +3001,10 @@ impl App {
                         self.apply_system_item(data);
                     }
                 }
-                SessionSnapshotEntryData::RunYielded { .. }
+                SessionSnapshotEntryData::Invoke { .. }
+                | SessionSnapshotEntryData::Usage { .. }
+                | SessionSnapshotEntryData::RunStats { .. }
+                | SessionSnapshotEntryData::RunYielded { .. }
                 | SessionSnapshotEntryData::RunResumed { .. }
                 | SessionSnapshotEntryData::RunCancelled => {
                     // Durable logical-Run transitions are intentionally not
@@ -3981,6 +3985,7 @@ mod completion_flow_tests {
         });
         app.handle_worker_event(Event::TurnStart { turn: 1 });
         app.handle_worker_event(Event::Usage {
+            timestamp_ms: None,
             input_tokens: Some(100),
             output_tokens: Some(0),
             cache_read_input_tokens: Some(40),
@@ -4210,6 +4215,7 @@ mod completion_flow_tests {
         let mut app = App::new("test".into());
         app.handle_worker_event(Event::TurnStart { turn: 1 });
         app.handle_worker_event(Event::InvokeStart {
+            timestamp_ms: None,
             kind: protocol::InvokeKind::UserSend,
         });
         app.handle_worker_event(Event::RunEnd {
@@ -5156,6 +5162,7 @@ mod completion_flow_tests {
         let mut app = App::new("test".into());
 
         app.handle_worker_event(Event::Usage {
+            timestamp_ms: None,
             input_tokens: Some(42_000),
             output_tokens: Some(9),
             cache_read_input_tokens: Some(40_000),
diff --git a/crates/worker/examples/worker_protocol.rs b/crates/worker/examples/worker_protocol.rs
index cd00370ae..53ec846d7 100644
--- a/crates/worker/examples/worker_protocol.rs
+++ b/crates/worker/examples/worker_protocol.rs
@@ -83,6 +83,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
                     input_tokens,
                     output_tokens,
                     cache_read_input_tokens,
+                    ..
                 } => {
                     println!(
                         "[usage] in={} (cache_read={}) out={}",
diff --git a/crates/worker/src/controller.rs b/crates/worker/src/controller.rs
index 9b8242604..f72e1a87e 100644
--- a/crates/worker/src/controller.rs
+++ b/crates/worker/src/controller.rs
@@ -178,7 +178,10 @@ impl WorkerHandle {
             (entries, entry_rx, in_flight)
         };
         let mut session =
-            session_store::public_snapshot::project_current_session_snapshot(&entries);
+            session_store::public_snapshot::project_current_session_snapshot_with_accounting(
+                self.artifact_store.as_ref(),
+                &entries,
+            );
         session.pending_submissions = self
             .pending_activations
             .lock()
@@ -1286,14 +1289,8 @@ pub(crate) fn wire_event_bridges_on_engine<C, St>(
         });
     });
 
-    let tx = working_event_tx.clone();
-    worker.on_usage(move |event| {
-        let _ = tx.send(Event::Usage {
-            input_tokens: event.input_tokens,
-            output_tokens: event.output_tokens,
-            cache_read_input_tokens: event.cache_read_input_tokens,
-        });
-    });
+    // Usage is published from committed LlmUsage records through the session-log
+    // lane. Snapshot and live usage therefore share one exact, gap-free boundary.
 
     let tx = working_event_tx.clone();
     worker.on_error(move |event| {
diff --git a/crates/worker/src/internal_worker.rs b/crates/worker/src/internal_worker.rs
index 852b4d583..13973591c 100644
--- a/crates/worker/src/internal_worker.rs
+++ b/crates/worker/src/internal_worker.rs
@@ -494,7 +494,11 @@ impl InternalWorkerSessionHandle {
             (entries, snapshot_from_guard(&guard))
         };
         InternalWorkerSessionSnapshot {
-            session: session_store::public_snapshot::project_current_session_snapshot(&entries),
+            session:
+                session_store::public_snapshot::project_current_session_snapshot_with_accounting(
+                    &self.store,
+                    &entries,
+                ),
             greeting: self.greeting.as_ref().map(|greeting| {
                 greeting
                     .read()
diff --git a/crates/worker/src/ipc/protocol_session.rs b/crates/worker/src/ipc/protocol_session.rs
index 718b03aea..2ca3e2e7f 100644
--- a/crates/worker/src/ipc/protocol_session.rs
+++ b/crates/worker/src/ipc/protocol_session.rs
@@ -96,7 +96,22 @@ pub fn live_log_entry_event(entry: LogEntry) -> Option<Event> {
                 item: value,
             })
         }
-        LogEntry::Invoke { trigger, .. } => Some(Event::InvokeStart { kind: trigger }),
+        LogEntry::Invoke { ts, trigger } => Some(Event::InvokeStart {
+            kind: trigger,
+            timestamp_ms: Some(ts),
+        }),
+        LogEntry::LlmUsage {
+            ts,
+            input_total_tokens,
+            cache_read_tokens,
+            output_tokens,
+            ..
+        } => Some(Event::Usage {
+            timestamp_ms: Some(ts),
+            input_tokens: Some(input_total_tokens),
+            cache_read_input_tokens: Some(cache_read_tokens),
+            output_tokens: Some(output_tokens),
+        }),
         other => {
             // `SegmentLogSink::is_live_relevant` keeps non-live-relevant
             // variants off the broadcast lane; reaching here means the two are
diff --git a/crates/worker/src/segment_log_sink.rs b/crates/worker/src/segment_log_sink.rs
index 93d0b0c73..76d9542d3 100644
--- a/crates/worker/src/segment_log_sink.rs
+++ b/crates/worker/src/segment_log_sink.rs
@@ -124,6 +124,7 @@ impl SegmentLogSink {
                 | LogEntry::ToolResultCorrected { .. }
                 | LogEntry::AnnotatedSystemItem { .. }
                 | LogEntry::Invoke { .. }
+                | LogEntry::LlmUsage { .. }
                 | LogEntry::RunYielded { .. }
                 | LogEntry::RunResumed { .. }
                 | LogEntry::RunCancelled { .. }
@@ -357,6 +358,54 @@ mod tests {
         assert!(rx.try_recv().is_err());
     }
 
+    #[test]
+    fn persisted_usage_is_split_once_between_snapshot_and_live_even_with_equal_timestamps() {
+        let sink = SegmentLogSink::new();
+        sink.publish(LogEntry::Invoke {
+            ts: 100,
+            trigger: protocol::InvokeKind::UserSend,
+        });
+        let usage = LogEntry::LlmUsage {
+            ts: 200,
+            history_len: 2,
+            input_total_tokens: 2000,
+            cache_read_tokens: 1000,
+            cache_write_tokens: 0,
+            output_tokens: 100,
+        };
+        sink.publish(usage.clone());
+        let (snapshot, mut rx) = sink.subscribe_with_snapshot();
+        assert_eq!(
+            snapshot
+                .iter()
+                .filter(|e| matches!(e, LogEntry::LlmUsage { .. }))
+                .count(),
+            1
+        );
+        assert!(rx.try_recv().is_err());
+        sink.publish(usage);
+        let event =
+            crate::ipc::protocol_session::live_log_entry_event(rx.try_recv().unwrap()).unwrap();
+        assert!(matches!(
+            event,
+            protocol::Event::Usage {
+                timestamp_ms: Some(200),
+                input_tokens: Some(2000),
+                ..
+            }
+        ));
+        assert!(rx.try_recv().is_err());
+        let (reconnected, mut next_rx) = sink.subscribe_with_snapshot();
+        assert_eq!(
+            reconnected
+                .iter()
+                .filter(|e| matches!(e, LogEntry::LlmUsage { .. }))
+                .count(),
+            2
+        );
+        assert!(next_rx.try_recv().is_err());
+    }
+
     #[test]
     fn reset_with_initial_clears_and_broadcasts() {
         let sink = SegmentLogSink::new();
diff --git a/crates/worker/src/session_capture.rs b/crates/worker/src/session_capture.rs
index 570c2b7c7..578045432 100644
--- a/crates/worker/src/session_capture.rs
+++ b/crates/worker/src/session_capture.rs
@@ -294,6 +294,9 @@ impl SessionCapture {
                     // Observation deliberately excludes system items and
                     // controller errors from model-visible session evidence.
                     SessionSnapshotEntryData::SystemItem { .. }
+                    | SessionSnapshotEntryData::Invoke { .. }
+                    | SessionSnapshotEntryData::Usage { .. }
+                    | SessionSnapshotEntryData::RunStats { .. }
                     | SessionSnapshotEntryData::RunYielded { .. }
                     | SessionSnapshotEntryData::RunResumed { .. }
                     | SessionSnapshotEntryData::RunCancelled
diff --git a/crates/worker/tests/controller_test.rs b/crates/worker/tests/controller_test.rs
index f79ab3fdf..99a8d9947 100644
--- a/crates/worker/tests/controller_test.rs
+++ b/crates/worker/tests/controller_test.rs
@@ -1556,6 +1556,70 @@ async fn snapshot_includes_user_input_for_in_flight_turn() {
     }
 }
 
+#[tokio::test]
+async fn reconnect_snapshot_restores_live_run_accounting_from_engine_events() {
+    let client = MockClient::new(vec![
+        LlmEvent::tool_use_start(0, "hold-call", "Hold"),
+        LlmEvent::tool_input_delta(0, "{}"),
+        LlmEvent::tool_use_stop(0),
+        LlmEvent::Usage(UsageEvent {
+            input_tokens: Some(25_000),
+            output_tokens: Some(300),
+            cache_read_input_tokens: Some(20_000),
+            ..Default::default()
+        }),
+        LlmEvent::Status(StatusEvent {
+            status: ResponseStatus::Completed,
+        }),
+    ]);
+    let mut worker = make_worker(client).await;
+    worker
+        .engine_mut()
+        .register_tool(hanging_tool_definition("Hold"));
+    let handle = spawn_controller(worker).await;
+    let mut events = handle.sink.subscribe_with_snapshot().1;
+    handle
+        .send(Method::submit_text(
+            protocol::new_submission_request_id(),
+            "keep running",
+        ))
+        .await
+        .unwrap();
+    let observed = tokio::time::timeout(std::time::Duration::from_secs(2), async {
+        loop {
+            if let LogEntry::LlmUsage {
+                ts,
+                input_total_tokens,
+                cache_read_tokens,
+                output_tokens,
+                ..
+            } = events.recv().await.unwrap()
+            {
+                break (ts, input_total_tokens, cache_read_tokens, output_tokens);
+            }
+        }
+    })
+    .await
+    .expect("live accounting");
+    assert_eq!((observed.1, observed.2, observed.3), (25_000, 20_000, 300));
+    for _ in 0..2 {
+        let Event::Snapshot { session, .. } = handle.snapshot_event() else {
+            panic!("expected snapshot")
+        };
+        let usage: Vec<_> = session
+            .entries
+            .iter()
+            .filter(|e| matches!(e.data, protocol::SessionSnapshotEntryData::Usage { .. }))
+            .collect();
+        assert_eq!(usage.len(), 1);
+        assert_eq!(usage[0].timestamp, observed.0);
+        assert!(session.entries.iter().any(|e| matches!(
+            e.data,
+            protocol::SessionSnapshotEntryData::Invoke { .. }
+        ) && e.timestamp > 0));
+    }
+}
+
 #[tokio::test]
 async fn attach_snapshot_includes_current_status() {
     let client = MockClient::sequential(vec![MockResponse::Hang(simple_text_events())]);
diff --git a/web/workspace/src/lib/generated/protocol-validator.ts b/web/workspace/src/lib/generated/protocol-validator.ts
index 1f467d468..eb0366e1a 100644
--- a/web/workspace/src/lib/generated/protocol-validator.ts
+++ b/web/workspace/src/lib/generated/protocol-validator.ts
@@ -21,7 +21,7 @@ const MAX_CORRELATION_ID_BYTES = 128;
 const MAX_RESOURCE_ID_BYTES = 256;
 const MAX_WORKER_IDS_PER_SELECTOR = 256;
 const MAX_REJECTION_MESSAGE_BYTES = 1024;
-const subscriptionFrameSchema: unknown = {"$defs":{"Alert":{"additionalProperties":false,"description":"User-facing alert emitted from the Worker layer.\n\nThis is a separate channel from `tracing` (developer logs): entries\nhere are assembled explicitly by the Worker when a condition should be\nsurfaced to the person driving the client. Keep messages short and\nhuman-readable.","properties":{"level":{"$ref":"#/$defs/AlertLevel"},"message":{"type":"string"},"source":{"$ref":"#/$defs/AlertSource"},"timestamp_ms":{"description":"Milliseconds since the Unix epoch.","format":"int64","maximum":9007199254740991.0,"minimum":-9007199254740991.0,"type":"integer"}},"required":["level","source","message","timestamp_ms"],"type":"object"},"AlertLevel":{"enum":["warn","error"],"type":"string"},"AlertSource":{"enum":["worker","engine","compactor","agents_md"],"type":"string"},"CommandEvent":{"oneOf":[{"additionalProperties":false,"properties":{"command_id":{"type":"string"},"kind":{"const":"started","type":"string"},"observed_at_ms":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"tool_call_id":{"type":["string","null"]}},"required":["kind","command_id","observed_at_ms"],"type":"object"},{"additionalProperties":false,"properties":{"command_id":{"type":"string"},"content":{"type":"string"},"end_offset":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"kind":{"const":"output","type":"string"},"observed_at_ms":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"start_offset":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"stream":{"$ref":"#/$defs/CommandStream"}},"required":["kind","command_id","stream","start_offset","end_offset","content","observed_at_ms"],"type":"object"},{"additionalProperties":false,"properties":{"command_id":{"type":"string"},"exit_code":{"format":"int32","maximum":2147483647.0,"minimum":-2147483648.0,"type":["integer","null"]},"kind":{"const":"terminal","type":"string"},"observed_at_ms":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"status":{"$ref":"#/$defs/CommandStatus"},"stderr_end_offset":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"stdout_end_offset":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"}},"required":["kind","command_id","status","stdout_end_offset","stderr_end_offset","observed_at_ms"],"type":"object"}]},"CommandSnapshot":{"additionalProperties":false,"properties":{"command_id":{"type":"string"},"exit_code":{"format":"int32","maximum":2147483647.0,"minimum":-2147483648.0,"type":["integer","null"]},"last_output_at_ms":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":["integer","null"]},"observed_at_ms":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"started_at_ms":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"status":{"$ref":"#/$defs/CommandStatus"},"stderr":{"$ref":"#/$defs/CommandStreamSlice"},"stdout":{"$ref":"#/$defs/CommandStreamSlice"},"tool_call_id":{"type":["string","null"]}},"required":["command_id","status","started_at_ms","observed_at_ms","stdout","stderr"],"type":"object"},"CommandStatus":{"description":"Live provider-owned command status. These values are operational Console\nstate only and are never appended to Worker history.","enum":["running","completed","failed","timed_out","cancelled"],"type":"string"},"CommandStream":{"enum":["stdout","stderr"],"type":"string"},"CommandStreamSlice":{"additionalProperties":false,"properties":{"content":{"type":"string"},"end_offset":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"start_offset":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"truncated":{"type":"boolean"}},"required":["start_offset","end_offset","content","truncated"],"type":"object"},"CompactionLifecycle":{"additionalProperties":false,"description":"Stable parent-owned lifecycle for one compaction run.","properties":{"compaction_id":{"type":"string"},"ended_at_ms":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":["integer","null"]},"error":{"type":["string","null"]},"internal_worker":{"anyOf":[{"$ref":"#/$defs/InternalWorkerRef"},{"type":"null"}]},"new_segment_id":{"type":["string","null"]},"revision":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"schema_version":{"format":"uint32","maximum":4294967295.0,"minimum":0.0,"type":"integer"},"started_at_ms":{"description":"Milliseconds since the Unix epoch.","format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"state":{"$ref":"#/$defs/CompactionLifecycleState"},"summary":{"type":["string","null"]}},"required":["schema_version","compaction_id","revision","state","started_at_ms"],"type":"object"},"CompactionLifecycleState":{"enum":["running","done","failed","interrupted"],"type":"string"},"CompactionPhase":{"enum":["preparing","summarizing","committing"],"type":"string"},"CompactionTrigger":{"enum":["manual","pre_run","request_threshold"],"type":"string"},"CompletionContext":{"additionalProperties":false,"properties":{"argument":{"type":["string","null"]},"invocation":{"$ref":"#/$defs/FeatureInvocationIdentity"}},"required":["invocation"],"type":"object"},"CompletionEntry":{"additionalProperties":false,"description":"One completion candidate for a prefix query.","properties":{"description":{"type":["string","null"]},"invocation":{"anyOf":[{"$ref":"#/$defs/FeatureInvocationDescriptor"},{"type":"null"}]},"is_dir":{"default":false,"type":"boolean"},"usage":{"type":["string","null"]},"value":{"type":"string"}},"required":["value","is_dir"],"type":"object"},"CompletionKind":{"description":"Kind of completion requested by `Method::ListCompletions`.\n\n`File` is the existing `@` path lane. `Feature` lists installed chat\ninvocations. `FeatureArgument` resolves a declared argument using the\nsource-qualified [`CompletionContext`].","enum":["file","feature","feature_argument"],"type":"string"},"ContextTokenSource":{"description":"Provenance of the current-context token count in a [`Greeting`].","oneOf":[{"const":"measured","description":"Provider-reported input occupancy from the most recent LLM request.","type":"string"},{"const":"estimated","description":"Current history projected from the Worker's token accounting records.","type":"string"}]},"ContextUsage":{"additionalProperties":false,"description":"Current prompt-context occupancy, distinct from cumulative run traffic.","properties":{"source":{"$ref":"#/$defs/ContextTokenSource"},"tokens":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"}},"required":["tokens","source"],"type":"object"},"ErrorCode":{"enum":["already_running","not_running","not_paused","provider_error","tool_error","invalid_request","internal"],"type":"string"},"Event":{"oneOf":[{"additionalProperties":false,"description":"Durable Submit acceptance. A `Queued` receipt follows the durable FIFO\ncheckpoint. A `Started` receipt follows the pending activation checkpoint;\nthe corresponding [`Event::UserMessage`] marks the later history commit.\nRepeating the same request id and exact payload returns the same receipt\nwithout appending or activating twice.","properties":{"data":{"additionalProperties":false,"properties":{"disposition":{"$ref":"#/$defs/SubmissionDisposition"},"submission_id":{"type":"string"},"submission_request_id":{"type":"string"}},"required":["submission_request_id","submission_id","disposition"],"type":"object"},"event":{"const":"submission_accepted","type":"string"}},"required":["event","data"],"type":"object"},{"additionalProperties":false,"description":"Correlated rejection before durable acceptance.","properties":{"data":{"additionalProperties":false,"properties":{"message":{"type":"string"},"submission_request_id":{"type":"string"}},"required":["submission_request_id","message"],"type":"object"},"event":{"const":"submission_rejected","type":"string"}},"required":["event","data"],"type":"object"},{"additionalProperties":false,"description":"Durable notification acceptance. The request identity is persisted with\nthe notification receipt before this event is emitted. Repeating the\nsame request id and exact payload returns the same acknowledgement\nwithout appending the notification twice.","properties":{"data":{"additionalProperties":false,"properties":{"notification_request_id":{"type":"string"}},"required":["notification_request_id"],"type":"object"},"event":{"const":"notification_accepted","type":"string"}},"required":["event","data"],"type":"object"},{"additionalProperties":false,"description":"Correlated notification rejection before durable acceptance.","properties":{"data":{"additionalProperties":false,"properties":{"message":{"type":"string"},"notification_request_id":{"type":"string"}},"required":["notification_request_id","message"],"type":"object"},"event":{"const":"notification_rejected","type":"string"}},"required":["event","data"],"type":"object"},{"additionalProperties":false,"description":"Revisioned FIFO replacement following enqueue, activation, cancel, or clear.","properties":{"data":{"additionalProperties":false,"properties":{"pending":{"$ref":"#/$defs/PendingSubmissionsSnapshot"}},"required":["pending"],"type":"object"},"event":{"const":"pending_submissions_changed","type":"string"}},"required":["event","data"],"type":"object"},{"additionalProperties":false,"description":"A user input message persisted as `LogEntry::AnnotatedUserInput` and\nactivated for a turn. Broadcast to every subscribed client so TUI / GUI\ninstances show the same user line that reconnect snapshots replay.","properties":{"data":{"additionalProperties":false,"properties":{"entry_id":{"description":"Stable durable history identity. Older mixed-version producers omit it.","type":["string","null"]},"segments":{"items":{"$ref":"#/$defs/Segment"},"type":"array"}},"required":["segments"],"type":"object"},"event":{"const":"user_message","type":"string"}},"required":["event","data"],"type":"object"},{"additionalProperties":false,"description":"A canonical assistant/tool entry has committed to durable history.\nStreaming events remain the in-flight authority; this event supplies the\nstable identity used to reconcile that live block with paged history.","properties":{"data":{"additionalProperties":false,"properties":{"entry":{"$ref":"#/$defs/SessionSnapshotEntry"}},"required":["entry"],"type":"object"},"event":{"const":"session_entry_committed","type":"string"}},"required":["event","data"],"type":"object"},{"additionalProperties":false,"description":"One agent-injected system item committed to history.\n\nCarries the JSON form of `session_store::SystemItem`. Covers\n`Method::Notify` echoes, child-Worker lifecycle events from\n`Method::WorkerEvent`, `@<path>` resolution payloads, and any future\nClients dispatch on the `kind` tag for typed rendering instead\nof parsing free-text prefixes like `[Notification] …` or\n`[File: …]`.\n\nOne event per `LogEntry::AnnotatedSystemItem` commit. Disk-side and\nwire-side are 1:1.","properties":{"data":{"additionalProperties":false,"properties":{"entry_id":{"description":"Stable durable history identity. Synthetic compatibility events omit it.","type":["string","null"]},"item":true},"required":["item"],"type":"object"},"event":{"const":"system_item","type":"string"}},"required":["event","data"],"type":"object"},{"additionalProperties":false,"description":"A new self-driving cycle has begun (IDLE → active transition).\n\nMarker event for the start of an Invoke range; the range extends\nimplicitly until the next `InvokeStart`. 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ay"}},"required":["workers"],"type":"object"},"topic":{"const":"workers","type":"string"}},"required":["topic","data"],"type":"object"},{"additionalProperties":false,"properties":{"data":{"additionalProperties":false,"properties":{"events":{"items":{"$ref":"#/$defs/Event"},"type":"array"},"worker_id":{"$ref":"#/$defs/SubscriptionWorkerId"}},"required":["worker_id","events"],"type":"object"},"topic":{"const":"worker_protocol","type":"string"}},"required":["topic","data"],"type":"object"},{"additionalProperties":false,"properties":{"data":{"additionalProperties":false,"properties":{"workdirs":{"items":{"$ref":"#/$defs/WorkspaceSubscriptionWorkdir"},"type":"array"}},"required":["workdirs"],"type":"object"},"topic":{"const":"workspace_workdirs","type":"string"}},"required":["topic","data"],"type":"object"}]},"SubscriptionTerminationCode":{"enum":["lagged","resource_gone","unauthorized","server_shutdown"],"type":"string"},"SubscriptionWorkdirId":{"type":"string"},"SubscriptionWorker":{"additionalProperties":false,"properties":{"availability":{"$ref":"#/$defs/SubscriptionWorkerAvailability","default":"observed","description":"Freshness 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Worker fills\n`source_entry_id` immediately before the containing user input is committed;\ncommitted Session Log and public snapshot records therefore always retain\nthe durable source-entry identity without storing the file body.","properties":{"artifact_id":{"type":"string"},"availability":{"$ref":"#/$defs/UploadedFileAvailability"},"byte_len":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"created_at_ms":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"file_name":{"type":"string"},"media_type":{"type":"string"},"sha256":{"type":"string"},"source_entry_id":{"type":["string","null"]}},"required":["artifact_id","file_name","media_type","created_at_ms","availability","byte_len","sha256"],"type":"object"},"WorkerBusyState":{"oneOf":[{"additionalProperties":false,"properties":{"kind":{"const":"run","type":"string"},"state":{"$ref":"#/$defs/WorkerRunState"}},"required":["kind","state"],"type":"object"},{"additionalProperties":false,"properties":{"kind":{"const":"maintenance","type":"string"},"state":{"$ref":"#/$defs/WorkerMaintenanceState"}},"required":["kind","state"],"type":"object"}]},"WorkerCommandAcknowledgement":{"additionalProperties":false,"properties":{"command":{"$ref":"#/$defs/WorkerCommandKind"},"command_id":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"disposition":{"$ref":"#/$defs/WorkerCommandDisposition"},"state":{"$ref":"#/$defs/WorkerStateSnapshot","description":"The complete authoritative state observed after command admission."}},"required":["command_id","command","disposition","state"],"type":"object"},"WorkerCommandDisposition":{"enum":["accepted","stale_command_id","conflict","invalid_state"],"type":"string"},"WorkerCommandEnvelope":{"additionalProperties":false,"description":"Caller-owned identity for one state-changing Worker command.\n\nA controller accepts command ids in strictly increasing order. 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The parent then re-fires\nthis event upward (if it has a parent of its own) to maintain\nthe chain to root.","properties":{"kind":{"const":"scope_sub_delegated","type":"string"},"parent_worker":{"description":"Sub-delegating Worker (= the sender itself).","type":"string"},"scope":{"description":"Scope delegated to the grandchild.","items":{"$ref":"#/$defs/ScopeRule"},"type":"array"},"sub_socket":{"description":"Unix-socket path where the grandchild is reachable.","type":"string"},"sub_worker":{"description":"Name of the grandchild Worker.","type":"string"}},"required":["kind","parent_worker","sub_worker","sub_socket","scope"],"type":"object"}]},"WorkerMaintenanceState":{"enum":["compacting"],"type":"string"},"WorkerRunState":{"enum":["running","pausing","paused","cancelling"],"type":"string"},"WorkerState":{"oneOf":[{"additionalProperties":false,"properties":{"kind":{"const":"idle","type":"string"}},"required":["kind"],"type":"object"},{"additionalProperties":false,"properties":{"kind":{"const":"busy","type":"string"},"state":{"$ref":"#/$defs/WorkerBusyState"}},"required":["kind","state"],"type":"object"}]},"WorkerStateSnapshot":{"additionalProperties":false,"properties":{"last_command_id":{"description":"Highest lifecycle command id observed by this controller instance.","format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"last_finished_submission_request_id":{"description":"Most recent Submit request whose controller Run has returned and whose\npost-Run state transition has been published. 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+const subscriptionFrameSchema: unknown = {"$defs":{"Alert":{"additionalProperties":false,"description":"User-facing alert emitted from the Worker layer.\n\nThis is a separate channel from `tracing` (developer logs): entries\nhere are assembled explicitly by the Worker when a condition should be\nsurfaced to the person driving the client. 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These values are operational Console\nstate only and are never appended to Worker history.","enum":["running","completed","failed","timed_out","cancelled"],"type":"string"},"CommandStream":{"enum":["stdout","stderr"],"type":"string"},"CommandStreamSlice":{"additionalProperties":false,"properties":{"content":{"type":"string"},"end_offset":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"start_offset":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"truncated":{"type":"boolean"}},"required":["start_offset","end_offset","content","truncated"],"type":"object"},"CompactionLifecycle":{"additionalProperties":false,"description":"Stable parent-owned lifecycle for one compaction run.","properties":{"compaction_id":{"type":"string"},"ended_at_ms":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":["integer","null"]},"error":{"type":["string","null"]},"internal_worker":{"anyOf":[{"$ref":"#/$defs/InternalWorkerRef"},{"type":"null"}]},"new_segment_id":{"type":["string","null"]},"revision":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"schema_version":{"format":"uint32","maximum":4294967295.0,"minimum":0.0,"type":"integer"},"started_at_ms":{"description":"Milliseconds since the Unix epoch.","format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"state":{"$ref":"#/$defs/CompactionLifecycleState"},"summary":{"type":["string","null"]}},"required":["schema_version","compaction_id","revision","state","started_at_ms"],"type":"object"},"CompactionLifecycleState":{"enum":["running","done","failed","interrupted"],"type":"string"},"CompactionPhase":{"enum":["preparing","summarizing","committing"],"type":"string"},"CompactionTrigger":{"enum":["manual","pre_run","request_threshold"],"type":"string"},"CompletionContext":{"additionalProperties":false,"properties":{"argument":{"type":["string","null"]},"invocation":{"$ref":"#/$defs/FeatureInvocationIdentity"}},"required":["invocation"],"type":"object"},"CompletionEntry":{"additionalProperties":false,"description":"One completion candidate for a prefix query.","properties":{"description":{"type":["string","null"]},"invocation":{"anyOf":[{"$ref":"#/$defs/FeatureInvocationDescriptor"},{"type":"null"}]},"is_dir":{"default":false,"type":"boolean"},"usage":{"type":["string","null"]},"value":{"type":"string"}},"required":["value","is_dir"],"type":"object"},"CompletionKind":{"description":"Kind of completion requested by `Method::ListCompletions`.\n\n`File` is the existing `@` path lane. `Feature` lists installed chat\ninvocations. `FeatureArgument` resolves a declared argument using the\nsource-qualified [`CompletionContext`].","enum":["file","feature","feature_argument"],"type":"string"},"ContextTokenSource":{"description":"Provenance of the current-context token count in a [`Greeting`].","oneOf":[{"const":"measured","description":"Provider-reported input occupancy from the most recent LLM request.","type":"string"},{"const":"estimated","description":"Current history projected from the Worker's token accounting records.","type":"string"}]},"ContextUsage":{"additionalProperties":false,"description":"Current prompt-context occupancy, distinct from cumulative run traffic.","properties":{"source":{"$ref":"#/$defs/ContextTokenSource"},"tokens":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"}},"required":["tokens","source"],"type":"object"},"ErrorCode":{"enum":["already_running","not_running","not_paused","provider_error","tool_error","invalid_request","internal"],"type":"string"},"Event":{"oneOf":[{"additionalProperties":false,"description":"Durable Submit acceptance. A `Queued` receipt follows the durable FIFO\ncheckpoint. 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ay"}},"required":["workers"],"type":"object"},"topic":{"const":"workers","type":"string"}},"required":["topic","data"],"type":"object"},{"additionalProperties":false,"properties":{"data":{"additionalProperties":false,"properties":{"events":{"items":{"$ref":"#/$defs/Event"},"type":"array"},"worker_id":{"$ref":"#/$defs/SubscriptionWorkerId"}},"required":["worker_id","events"],"type":"object"},"topic":{"const":"worker_protocol","type":"string"}},"required":["topic","data"],"type":"object"},{"additionalProperties":false,"properties":{"data":{"additionalProperties":false,"properties":{"workdirs":{"items":{"$ref":"#/$defs/WorkspaceSubscriptionWorkdir"},"type":"array"}},"required":["workdirs"],"type":"object"},"topic":{"const":"workspace_workdirs","type":"string"}},"required":["topic","data"],"type":"object"}]},"SubscriptionTerminationCode":{"enum":["lagged","resource_gone","unauthorized","server_shutdown"],"type":"string"},"SubscriptionWorkdirId":{"type":"string"},"SubscriptionWorker":{"additionalProperties":false,"properties":{"availability":{"$ref":"#/$defs/SubscriptionWorkerAvailability","default":"observed","description":"Freshness 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Runtime producers leave this unset; the\nWorkspace projection enriches both snapshots and live updates."},"profile":{"type":["string","null"]},"resource_key":{"description":"Workspace-scoped canonical resource key. Runtime producers leave this unset;\nWorkspace-facing projections must populate it before publishing the Worker.","type":["string","null"]},"restore_observation_token":{"description":"Opaque Runtime-owned Restore observation identity, never a display-state hash.","type":["string","null"]},"runtime_id":{"description":"Set by the Workspace Server when projecting a Runtime-owned Worker to clients.\nRuntime producers leave this unset because the connection identifies the Runtime.","type":["string","null"]},"state":{"$ref":"#/$defs/SubscriptionWorkerState","description":"Runtime catalog lifecycle compatibility projection; not foreground-state authority."},"workdir_attachments":{"items":{"$ref":"#/$defs/SubscriptionWorkerWorkdirAttachment"},"type":"array"},"worker_id":{"$ref":"#/$defs/SubscriptionWorkerId"},"worker_state":{"anyOf":[{"$ref":"#/$defs/WorkerStateSnapshot"},{"type":"null"}],"description":"Latest foreground state observed from the Worker. This remains\nabsent until an authoritative Worker snapshot/event has been applied."},"workspace_id":{"type":["string","null"]}},"required":["worker_id","state","availability","has_running_internal_workers"],"type":"object"},"SubscriptionWorkerAvailability":{"description":"Whether the Workspace Server has a current Runtime observation for a Worker.\n\n`Unavailable` deliberately does not imply `Stopped`: it means the last observed\nlifecycle state is retained while the Runtime observation source is unavailable.","enum":["observed","unavailable"],"type":"string"},"SubscriptionWorkerId":{"type":"string"},"SubscriptionWorkerIds":{"description":"A bounded, canonical worker-id set. Ordering on the wire and in equality/hash\nsemantics is lexical, so equivalent selectors aggregate to one upstream key.","items":{"$ref":"#/$defs/SubscriptionWorkerId"},"type":"array"},"SubscriptionWorkerJob":{"additionalProperties":false,"properties":{"attempt_id":{"type":"string"},"job_id":{"type":"string"},"purpose":{"type":"string"}},"required":["job_id","attempt_id","purpose"],"type":"object"},"SubscriptionWorkerProtocolMethod":{"additionalProperties":false,"properties":{"method":{"$ref":"#/$defs/Method"},"subscription_id":{"$ref":"#/$defs/SubscriptionId"}},"required":["subscription_id","method"],"type":"object"},"SubscriptionWorkerState":{"enum":["idle","running","paused","stopped"],"type":"string"},"SubscriptionWorkerWorkdirAttachment":{"additionalProperties":false,"properties":{"alias":{"description":"Stable Worker-local routing alias.","type":"string"},"repository_key":{"type":["string","null"]},"working_directory_id":{"$ref":"#/$defs/SubscriptionWorkdirId"}},"required":["alias","working_directory_id"],"type":"object"},"SymlinkPolicy":{"description":"Symbolic-link identity used by one filesystem allow rule.\n\n`Resolved` is the least authority and the default: access is matched\nagainst the provider-resolved target. `Logical` intentionally grants the\npath as presented through the Workdir, even when it aliases another target.","enum":["resolved","logical"],"type":"string"},"ToolResultDisposition":{"enum":["success","error","interrupted","cancelled","outcome_unknown"],"type":"string"},"TurnResult":{"enum":["finished","paused"],"type":"string"},"UploadedFileAvailability":{"description":"Availability recorded for an uploaded client-local file.","enum":["available","unavailable","integrity_failed"],"type":"string"},"UploadedFileRef":{"additionalProperties":false,"description":"Session-owned immutable reference to a client-local uploaded file.\n\nUpload transports return an unbound reference. Worker fills\n`source_entry_id` immediately before the containing user input is committed;\ncommitted Session Log and public snapshot records therefore always retain\nthe durable source-entry identity without storing the file body.","properties":{"artifact_id":{"type":"string"},"availability":{"$ref":"#/$defs/UploadedFileAvailability"},"byte_len":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"created_at_ms":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"file_name":{"type":"string"},"media_type":{"type":"string"},"sha256":{"type":"string"},"source_entry_id":{"type":["string","null"]}},"required":["artifact_id","file_name","media_type","created_at_ms","availability","byte_len","sha256"],"type":"object"},"WorkerBusyState":{"oneOf":[{"additionalProperties":false,"properties":{"kind":{"const":"run","type":"string"},"state":{"$ref":"#/$defs/WorkerRunState"}},"required":["kind","state"],"type":"object"},{"additionalProperties":false,"properties":{"kind":{"const":"maintenance","type":"string"},"state":{"$ref":"#/$defs/WorkerMaintenanceState"}},"required":["kind","state"],"type":"object"}]},"WorkerCommandAcknowledgement":{"additionalProperties":false,"properties":{"command":{"$ref":"#/$defs/WorkerCommandKind"},"command_id":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"disposition":{"$ref":"#/$defs/WorkerCommandDisposition"},"state":{"$ref":"#/$defs/WorkerStateSnapshot","description":"The complete authoritative state observed after command admission."}},"required":["command_id","command","disposition","state"],"type":"object"},"WorkerCommandDisposition":{"enum":["accepted","stale_command_id","conflict","invalid_state"],"type":"string"},"WorkerCommandEnvelope":{"additionalProperties":false,"description":"Caller-owned identity for one state-changing Worker command.\n\nA controller accepts command ids in strictly increasing order. Exact retries\nof an accepted id must retain the same command kind.","properties":{"command_id":{"format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"}},"required":["command_id"],"type":"object"},"WorkerCommandKind":{"enum":["resume","cancel","pause","compact","shutdown"],"type":"string"},"WorkerEvent":{"description":"Typed lifecycle events sent from a child Worker to its parent.\n\nDelivered as `Method::WorkerEvent` over the parent's Unix socket. The\nparent Controller always applies variant-specific side effects\n(registry / worker-allocation updates). Agent-visible variants are also\nqueued into the notification buffer; control-plane-only variants are\nnot injected into the parent's LLM context.\n\nTransport is fire-and-forget; receivers must tolerate out-of-order\ndelivery (e.g. `TurnEnded` arriving after `ShutDown` for the same\nchild Worker).","oneOf":[{"additionalProperties":false,"description":"Child finished one turn and is back to IDLE.","properties":{"kind":{"const":"turn_ended","type":"string"},"worker_name":{"type":"string"}},"required":["kind","worker_name"],"type":"object"},{"additionalProperties":false,"description":"Engine execution error occurred inside the child's turn.\n\nLimited to worker runtime failures (provider / tool errors) —\ndoes not include transient method-rejection responses such as\n`AlreadyRunning`.","properties":{"kind":{"const":"errored","type":"string"},"message":{"type":"string"},"worker_name":{"type":"string"}},"required":["kind","worker_name","message"],"type":"object"},{"additionalProperties":false,"description":"Child has stopped (controller loop is exiting).","properties":{"kind":{"const":"shut_down","type":"string"},"worker_name":{"type":"string"}},"required":["kind","worker_name"],"type":"object"},{"additionalProperties":false,"description":"Child SubWorker sub-delegated scope to a grandchild SubWorker via `SubWorkerSpawn`.\n\nControl-plane only: receivers apply registry side effects and\npropagate upward, but do not expose this as an agent notification.\n\nThe parent uses this to add the grandchild to its own\n`spawned_workers.json` so it can manage the grandchild directly\neven if the intermediate child dies. The parent then re-fires\nthis event upward (if it has a parent of its own) to maintain\nthe chain to root.","properties":{"kind":{"const":"scope_sub_delegated","type":"string"},"parent_worker":{"description":"Sub-delegating Worker (= the sender itself).","type":"string"},"scope":{"description":"Scope delegated to the grandchild.","items":{"$ref":"#/$defs/ScopeRule"},"type":"array"},"sub_socket":{"description":"Unix-socket path where the grandchild is reachable.","type":"string"},"sub_worker":{"description":"Name of the grandchild Worker.","type":"string"}},"required":["kind","parent_worker","sub_worker","sub_socket","scope"],"type":"object"}]},"WorkerMaintenanceState":{"enum":["compacting"],"type":"string"},"WorkerRunState":{"enum":["running","pausing","paused","cancelling"],"type":"string"},"WorkerState":{"oneOf":[{"additionalProperties":false,"properties":{"kind":{"const":"idle","type":"string"}},"required":["kind"],"type":"object"},{"additionalProperties":false,"properties":{"kind":{"const":"busy","type":"string"},"state":{"$ref":"#/$defs/WorkerBusyState"}},"required":["kind","state"],"type":"object"}]},"WorkerStateSnapshot":{"additionalProperties":false,"properties":{"last_command_id":{"description":"Highest lifecycle command id observed by this controller instance.","format":"uint64","maximum":9007199254740991.0,"minimum":0.0,"type":"integer"},"last_finished_submission_request_id":{"description":"Most recent Submit request whose controller Run has returned and whose\npost-Run state transition has been published. This is a teardown fence,\nnot a successful-result claim; cancelled and failed Runs may also finish.","type":["string","null"]},"state":{"$ref":"#/$defs/WorkerState"}},"required":["last_command_id","state"],"type":"object"},"WorkerStatus":{"enum":["idle","running","paused","stopped"],"type":"string"},"WorkspaceSubscriptionWorkdir":{"additionalProperties":false,"description":"Workspace-facing Workdir summary. Backend-generated Repository UUIDs never\nenter this DTO; Workspace Server must resolve the required Repository key.","properties":{"repository_key":{"type":"string"},"state":{"type":"string"},"working_directory_id":{"$ref":"#/$defs/SubscriptionWorkdirId"}},"required":["working_directory_id","repository_key","state"],"type":"object"}},"$schema":"https://json-schema.org/draft/2020-12/schema","description":"Direction is explicit at the outer envelope, while concrete message kinds\nremain typed within each lane.","oneOf":[{"additionalProperties":false,"properties":{"frame":{"const":"request","type":"string"},"message":{"$ref":"#/$defs/SubscriptionRequest"},"protocol_version":{"format":"uint16","maximum":65535.0,"minimum":0.0,"type":"integer"}},"required":["frame","message","protocol_version"],"type":"object"},{"additionalProperties":false,"properties":{"frame":{"const":"response","type":"string"},"message":{"$ref":"#/$defs/SubscriptionResponse"},"protocol_version":{"format":"uint16","maximum":65535.0,"minimum":0.0,"type":"integer"}},"required":["frame","message","protocol_version"],"type":"object"},{"additionalProperties":false,"properties":{"frame":{"const":"event","type":"string"},"message":{"$ref":"#/$defs/SubscriptionEvent"},"protocol_version":{"format":"uint16","maximum":65535.0,"minimum":0.0,"type":"integer"}},"required":["frame","message","protocol_version"],"type":"object"},{"additionalProperties":false,"properties":{"frame":{"const":"worker_protocol","type":"string"},"message":{"$ref":"#/$defs/SubscriptionWorkerProtocolMethod"},"protocol_version":{"format":"uint16","maximum":65535.0,"minimum":0.0,"type":"integer"}},"required":["frame","message","protocol_version"],"type":"object"}],"title":"SubscriptionFrame"};
 export const RUST_SERIALIZED_SUBSCRIPTION_FRAME_FIXTURES: readonly unknown[] =
   [{"protocol_version":2,"frame":"response","message":{"result":"subscribed","payload":{"request_id":"fixture-request","subscription_id":"fixture-subscription","selector":{"topic":"workspace_workers"},"snapshot":{"topic":"workers","data":{"workers":[{"restore_observation_token":"fixture-restore-observation","worker_id":"fixture-worker","runtime_id":"fixture-runtime","resource_key":"fixture-worker-resource","availability":"observed","state":"idle","has_running_internal_workers":false,"workspace_id":"fixture-workspace","workdir_attachments":[{"alias":"external","working_directory_id":"fixture-external-workdir"}]}]}}}}},{"protocol_version":2,"frame":"event","message":{"event":"event","data":{"subscription_id":"fixture-subscription","payload":{"event":"worker_protocol","data":{"worker_id":"fixture-worker","event":{"event":"pending_submissions_changed","data":{"pending":{"revision":0,"notification_count":0,"head_id":null,"submissions":[]}}}}}}}},{"protocol_version":2,"frame":"event","message":{"event":"event","data":{"subscription_id":"fixture-subscription","payload":{"event":"worker_protocol","data":{"worker_id":"fixture-worker","event":{"event":"snapshot","data":{"session":{"pending_submissions":{"revision":0,"notification_count":0,"head_id":null,"submissions":[]},"entries":[]},"greeting":{"worker_name":"fixture-worker","cwd":"/fixture","provider":"openai_responses","model":"gpt-6-astra","reasoning":{"kind":"effort","effort":"high"},"scope_summary":"fixture scope","tools":["Read"],"context_window":272000,"context_tokens":142000,"context_usage":{"tokens":142000,"source":"measured"}},"state":{"last_command_id":0,"state":{"kind":"idle"}},"internal_workers":[{"worker":{"session_id":"fixture-child-session","name":"fixture-child","parent_session_id":"fixture-parent-session","kind":"sub_worker"},"revision":1,"session":{"pending_submissions":{"revision":0,"notification_count":0,"head_id":null,"submissions":[]},"entries":[]},"greeting":{"worker_name":"fixture-worker","cwd":"/fixture","provider":"openai_responses","model":"gpt-6-astra","reasoning":{"kind":"effort","effort":"high"},"scope_summary":"fixture scope","tools":["Read"],"context_window":272000,"context_tokens":142000,"context_usage":{"tokens":142000,"source":"measured"}},"status":"idle"}]}}}}}}}];
 const utf8 = new TextEncoder();
diff --git a/web/workspace/src/lib/generated/protocol.ts b/web/workspace/src/lib/generated/protocol.ts
index 637f7c16b..a9b86538d 100644
--- a/web/workspace/src/lib/generated/protocol.ts
+++ b/web/workspace/src/lib/generated/protocol.ts
@@ -193,7 +193,7 @@ export type RunResumeSource = "compaction" | "pause";
 
 export type RunFailureKind = "engine" | "compaction";
 
-export type SessionSnapshotEntryData = { "kind": "user_input", segments: Array<Segment>, } | { "kind": "message", role: SessionMessageRole, content: Array<SessionContentPart>, } | { "kind": "tool_call", call_id: string, name: string, arguments: string, } | { "kind": "tool_result", call_id: string, summary: string, content?: string | null, is_error: boolean, attachments?: Array<SessionToolAttachment>, } | { "kind": "system_item", item_kind: string, content: string, data?: unknown, } | { "kind": "run_yielded", reason: RunYieldReason, active_run_turn_count: number, } | { "kind": "run_resumed", source: RunResumeSource, active_run_turn_count: number, } | { "kind": "run_cancelled" } | { "kind": "run_error", message: string, failure?: RunFailureKind | null, };
+export type SessionSnapshotEntryData = { "kind": "user_input", segments: Array<Segment>, } | { "kind": "message", role: SessionMessageRole, content: Array<SessionContentPart>, } | { "kind": "tool_call", call_id: string, name: string, arguments: string, } | { "kind": "tool_result", call_id: string, summary: string, content?: string | null, is_error: boolean, attachments?: Array<SessionToolAttachment>, } | { "kind": "system_item", item_kind: string, content: string, data?: unknown, } | { "kind": "run_yielded", reason: RunYieldReason, active_run_turn_count: number, } | { "kind": "run_resumed", source: RunResumeSource, active_run_turn_count: number, } | { "kind": "invoke", trigger: InvokeKind, } | { "kind": "usage", input_tokens: number, cache_read_input_tokens: number, output_tokens: number, } | { "kind": "run_stats", elapsed_ms: number, requests: number, upload_tokens: number, output_tokens: number, } | { "kind": "run_cancelled" } | { "kind": "run_error", message: string, failure?: RunFailureKind | null, };
 
 export type SessionSnapshotEntry = {
 /**
@@ -204,7 +204,7 @@ entry_id: string,
 /**
  * Timestamp copied from the durable log record that commits this entry.
  */
-timestamp: number, provenance: SessionEntryProvenance, derived_from?: Array<string>, } & ({ "kind": "user_input", segments: Array<Segment>, } | { "kind": "message", role: SessionMessageRole, content: Array<SessionContentPart>, } | { "kind": "tool_call", call_id: string, name: string, arguments: string, } | { "kind": "tool_result", call_id: string, summary: string, content?: string | null, is_error: boolean, attachments?: Array<SessionToolAttachment>, } | { "kind": "system_item", item_kind: string, content: string, data?: unknown, } | { "kind": "run_yielded", reason: RunYieldReason, active_run_turn_count: number, } | { "kind": "run_resumed", source: RunResumeSource, active_run_turn_count: number, } | { "kind": "run_cancelled" } | { "kind": "run_error", message: string, failure?: RunFailureKind | null, });
+timestamp: number, provenance: SessionEntryProvenance, derived_from?: Array<string>, } & ({ "kind": "user_input", segments: Array<Segment>, } | { "kind": "message", role: SessionMessageRole, content: Array<SessionContentPart>, } | { "kind": "tool_call", call_id: string, name: string, arguments: string, } | { "kind": "tool_result", call_id: string, summary: string, content?: string | null, is_error: boolean, attachments?: Array<SessionToolAttachment>, } | { "kind": "system_item", item_kind: string, content: string, data?: unknown, } | { "kind": "run_yielded", reason: RunYieldReason, active_run_turn_count: number, } | { "kind": "run_resumed", source: RunResumeSource, active_run_turn_count: number, } | { "kind": "invoke", trigger: InvokeKind, } | { "kind": "usage", input_tokens: number, cache_read_input_tokens: number, output_tokens: number, } | { "kind": "run_stats", elapsed_ms: number, requests: number, upload_tokens: number, output_tokens: number, } | { "kind": "run_cancelled" } | { "kind": "run_error", message: string, failure?: RunFailureKind | null, });
 
 export type SessionConversationTurn = { turn_id: string, entries: Array<SessionSnapshotEntry>, };
 
@@ -431,7 +431,11 @@ entry_id?: string | null, segments: Array<Segment>, } } | { "event": "session_en
 /**
  * Stable durable history identity. Synthetic compatibility events omit it.
  */
-entry_id?: string | null, item: unknown, } } | { "event": "invoke_start", "data": { kind: InvokeKind, } } | { "event": "turn_start", "data": { turn: number, } } | { "event": "turn_end", "data": { turn: number, result: TurnResult, } } | { "event": "llm_call_start", "data": { llm_call: number, } } | { "event": "llm_call_end", "data": { llm_call: number, } } | { "event": "llm_retry", "data": { llm_call: number,
+entry_id?: string | null, item: unknown, } } | { "event": "invoke_start", "data": { kind: InvokeKind,
+/**
+ * Timestamp of the persisted Invoke, not the client's attach time.
+ */
+timestamp_ms?: number | null, } } | { "event": "turn_start", "data": { turn: number, } } | { "event": "turn_end", "data": { turn: number, result: TurnResult, } } | { "event": "llm_call_start", "data": { llm_call: number, } } | { "event": "llm_call_end", "data": { llm_call: number, } } | { "event": "llm_retry", "data": { llm_call: number,
 /**
  * The attempt that just failed. 1 origin.
  */
@@ -445,7 +449,11 @@ summary: string,
  * Full tool output. Absent when the tool chose to return
  * summary-only, or when the result was pruned.
  */
-output?: string | null, disposition?: ToolResultDisposition | null, is_error: boolean, } } | { "event": "usage", "data": { input_tokens: number | null, output_tokens: number | null, cache_read_input_tokens?: number | null, } } | { "event": "context_usage", "data": { usage?: ContextUsage | null, } } | { "event": "run_end", "data": { result: RunResult, } } | { "event": "error", "data": { code: ErrorCode, message: string, } } | { "event": "snapshot", "data": { session: SessionSnapshot, greeting: Greeting,
+output?: string | null, disposition?: ToolResultDisposition | null, is_error: boolean, } } | { "event": "usage", "data": {
+/**
+ * Present for usage delivered from the committed session-log lane.
+ */
+timestamp_ms?: number | null, input_tokens: number | null, output_tokens: number | null, cache_read_input_tokens?: number | null, } } | { "event": "context_usage", "data": { usage?: ContextUsage | null, } } | { "event": "run_end", "data": { result: RunResult, } } | { "event": "error", "data": { code: ErrorCode, message: string, } } | { "event": "snapshot", "data": { session: SessionSnapshot, greeting: Greeting,
 /**
  * Full revisioned live execution state. `Stopped` remains Runtime
  * catalog authority and is deliberately not represented here.
diff --git a/web/workspace/src/lib/workspace/console/model.test.ts b/web/workspace/src/lib/workspace/console/model.test.ts
index a55316889..1bf8fa1ac 100644
--- a/web/workspace/src/lib/workspace/console/model.test.ts
+++ b/web/workspace/src/lib/workspace/console/model.test.ts
@@ -26,6 +26,32 @@ declare const Deno: {
   test(name: string, fn: () => void): void;
 };
 
+Deno.test("restored run stats replace live estimates in both Console modes", () => {
+  const answer: SessionSnapshotEntry = {
+    kind: "message", role: "assistant", content: [{ kind: "text", text: "answer" }],
+    entry_id: "answer-1", timestamp: 5000, provenance: "model_output", derived_from: [],
+  };
+  const stats: SessionSnapshotEntry = {
+    kind: "run_stats", entry_id: "run-stats:answer-1", timestamp: 6000,
+    provenance: "legacy_unknown", derived_from: ["answer-1"],
+    elapsed_ms: 5000, requests: 2, upload_tokens: 1500, output_tokens: 200,
+  };
+  for (const commitBeforeEnd of [true, false]) {
+    const projector = createConsoleProjector();
+    projector.append([{ eventId: "text", event: { event: "text_done", data: { text: "answer" } } }]);
+    const commit = { eventId: "commit", event: { event: "session_entry_committed", data: { entry: answer } } } as const;
+    const end = { eventId: "end", event: { event: "run_end", data: { result: "finished" } } } as const;
+    const live = projector.append(commitBeforeEnd ? [commit, end] : [end, commit]);
+    const history = projectSessionHistoryEntries([answer, stats], null);
+    for (const mode of ["normal", "overview"] as const) {
+      const lines = projectConsoleLines(mergeCommittedHistoryLines(history, live.lines), mode);
+      assertEquals(lines.map((line) => line.kind), ["assistant", "run_stats"]);
+      assertEquals(lines[1].body, "5s ・2 reqs ↑1.5k/↓200");
+      assertEquals(projectConsoleLines(history, mode)[1].body, lines[1].body);
+    }
+  }
+});
+
 function workerState(status: WorkerStatus): WorkerStateSnapshot {
   return {
     last_command_id: 0,
diff --git a/web/workspace/src/lib/workspace/console/model.ts b/web/workspace/src/lib/workspace/console/model.ts
index ce44a7d68..7f64864a0 100644
--- a/web/workspace/src/lib/workspace/console/model.ts
+++ b/web/workspace/src/lib/workspace/console/model.ts
@@ -26,6 +26,7 @@ import {
   emptyRunActivityStats,
   formatRunElapsedCompact,
   formatRunTokens,
+  restoredRunActivity,
   type RunActivityStats,
 } from "./run-status.ts";
 import {
@@ -336,9 +337,17 @@ export function mergeCommittedHistoryLines(
   history: ConsoleLine[],
   current: ConsoleLine[],
 ): ConsoleLine[] {
+  const durableStats = new Map(
+    history.filter((line) => line.kind === "run_stats" && line.entryId)
+      .map((line) => [line.entryId!, line]),
+  );
   return aggregateReadToolLines(mergeHistorySourceLines(
     history.flatMap((line) => line.toolCallLines ?? [line]),
-    current.flatMap((line) => line.toolCallLines ?? [line]),
+    current.flatMap((line) => line.toolCallLines ?? [line]).map((line) =>
+      line.kind === "run_stats" && line.entryId
+        ? durableStats.get(line.entryId) ?? line
+        : line
+    ),
   ));
 }
 
@@ -866,6 +875,7 @@ function projectInternalWorkerSnapshot(
     cwd,
   );
   console.status = snapshot.status;
+  console.runActivity = restoredRunActivity(snapshot.session.entries);
   console.workerMetadata = snapshot.greeting
     ? metadataFromGreeting(snapshot.greeting)
     : null;
@@ -1076,6 +1086,13 @@ export function applyProtocolEvent(
         if (committedIndex >= 0) {
           const [committed] = next.lines.splice(committedIndex, 1);
           next.lines.splice(replacementIndex, 0, committed);
+          const stats = next.lines[replacementIndex + 1];
+          if (stats?.kind === "run_stats" && !stats.entryId) {
+            next.lines[replacementIndex + 1] = {
+              ...stats,
+              entryId: `run-stats:${committed.entryId}`,
+            };
+          }
         }
       }
       break;
@@ -1294,15 +1311,24 @@ export function applyProtocolEvent(
     case "llm_retry":
     case "llm_continuation":
       break;
-    case "run_end":
-      next.lines.push(
-        runStatsLine(
-          envelope.eventId,
-          next.runActivity,
-          envelope.observedAtMs ?? next.runActivity.startedAtMs ?? 0,
-        ),
+    case "run_end": {
+      const anchor = next.lines.findLast((line) =>
+        line.kind === "assistant" || line.kind === "user" ||
+        line.kind === "tool" || line.kind === "system"
       );
+      const summary = runStatsLine(
+        envelope.eventId,
+        next.runActivity,
+        envelope.observedAtMs ?? next.runActivity.startedAtMs ?? 0,
+      );
+      if (anchor?.entryId) summary.entryId = `run-stats:${anchor.entryId}`;
+      const previous = next.lines.findIndex((line) =>
+        summary.entryId && line.entryId === summary.entryId
+      );
+      if (previous >= 0) next.lines[previous] = summary;
+      else next.lines.push(summary);
       break;
+    }
     case "alert":
       appendAlertLine(next, envelope.eventId, event.data);
       break;
@@ -2402,6 +2428,21 @@ function applySessionEntry(
       applyTaskSystemItem(projection, item);
       break;
     }
+    case "run_stats": {
+      const elapsed = safeTokenCount(value["elapsed_ms"]);
+      const requests = safeTokenCount(value["requests"]);
+      const upload = safeTokenCount(value["upload_tokens"]);
+      const output = safeTokenCount(value["output_tokens"]);
+      if (elapsed !== null && requests !== null && upload !== null && output !== null) {
+        projection.lines.push(runStatsLine(eventId, {
+          startedAtMs: 0,
+          requests,
+          uploadTokens: upload,
+          outputTokens: output,
+        }, elapsed));
+      }
+      break;
+    }
     case "run_yielded":
     case "run_resumed":
     case "run_cancelled":
diff --git a/web/workspace/src/lib/workspace/console/run-status.test.ts b/web/workspace/src/lib/workspace/console/run-status.test.ts
index bc8a9f989..e8c676f36 100644
--- a/web/workspace/src/lib/workspace/console/run-status.test.ts
+++ b/web/workspace/src/lib/workspace/console/run-status.test.ts
@@ -114,7 +114,32 @@ Deno.test("run activity follows TUI request and net-token accounting", () => {
   });
 });
 
-Deno.test("new invoke and running snapshot reset run activity", () => {
+Deno.test("reconnect rebuilds run totals from Invoke and individual persisted usage", () => {
+  const entries = [
+    { kind: "invoke", timestamp: 1_000, trigger: "user_send" },
+    { kind: "usage", timestamp: 2_000, input_tokens: 25000, cache_read_input_tokens: 20000, output_tokens: 300 },
+  ];
+  const snapshot = { event: "snapshot", data: {
+    session: { entries },
+    state: { state: { kind: "busy", state: { kind: "run", state: "running" } } },
+  } };
+  let stats = applyRunActivityEvent(emptyRunActivityStats(), snapshot, 60_000);
+  const restored = { startedAtMs: 1_000, requests: 1, uploadTokens: 5_000, outputTokens: 300, fromLog: true };
+  assertEquals(stats, restored);
+  // TurnStart is operational; each committed Usage is counted once instead.
+  stats = applyRunActivityEvent(stats, { event: "turn_start", data: { turn: 2 } }, 61_000);
+  assertEquals(stats, restored);
+  stats = applyRunActivityEvent(stats, { event: "usage", data: {
+    timestamp_ms: 62_000, input_tokens: 2000, cache_read_input_tokens: 1000, output_tokens: 100,
+  } }, 62_100);
+  assertEquals(stats, { ...restored, requests: 2, uploadTokens: 6000, outputTokens: 400 });
+  // Reapplying a snapshot replaces the prefix, rather than adding it again.
+  assertEquals(applyRunActivityEvent(stats, snapshot, 80_000), restored);
+  stats = applyRunActivityEvent(stats, { event: "invoke_start", data: { kind: "notify", timestamp_ms: 90_000 } }, 99_000);
+  assertEquals(stats, { startedAtMs: 90_000, requests: 0, uploadTokens: 0, outputTokens: 0, fromLog: true });
+});
+
+Deno.test("new invoke and legacy snapshot reset run activity", () => {
   const previous = {
     startedAtMs: 1,
     requests: 3,
diff --git a/web/workspace/src/lib/workspace/console/run-status.ts b/web/workspace/src/lib/workspace/console/run-status.ts
index 220cbdc4e..a8e0bc8cb 100644
--- a/web/workspace/src/lib/workspace/console/run-status.ts
+++ b/web/workspace/src/lib/workspace/console/run-status.ts
@@ -1,10 +1,13 @@
 import type {
   Event as ProtocolEvent,
   InFlightCompaction,
+  SessionSnapshotEntry,
   WorkerStateSnapshot,
 } from "#lib/generated/protocol.ts";
 
 export type RunActivityStats = {
+  /** Request counts follow persisted usage when the producer supplies it. */
+  fromLog?: boolean;
   startedAtMs: number | null;
   requests: number;
   uploadTokens: number;
@@ -20,6 +23,25 @@ export function emptyRunActivityStats(): RunActivityStats {
   };
 }
 
+export function restoredRunActivity(entries: SessionSnapshotEntry[]): RunActivityStats {
+  let stats = emptyRunActivityStats();
+  for (const entry of entries) {
+    if (entry.kind === "invoke") {
+      stats = applyRunActivityEvent(stats, { event: "invoke_start", data: {
+        kind: entry.trigger, timestamp_ms: entry.timestamp,
+      } }, entry.timestamp);
+    } else if (entry.kind === "usage") {
+      stats = applyRunActivityEvent(stats, { event: "usage", data: {
+        timestamp_ms: entry.timestamp,
+        input_tokens: entry.input_tokens,
+        cache_read_input_tokens: entry.cache_read_input_tokens,
+        output_tokens: entry.output_tokens,
+      } }, entry.timestamp);
+    }
+  }
+  return stats;
+}
+
 export function applyRunActivityEvent(
   current: RunActivityStats,
   event: ProtocolEvent,
@@ -27,14 +49,22 @@ export function applyRunActivityEvent(
 ): RunActivityStats {
   switch (event.event) {
     case "invoke_start":
-      return { ...emptyRunActivityStats(), startedAtMs: observedAtMs };
-    case "snapshot":
+      return {
+        ...emptyRunActivityStats(),
+        ...(event.data.timestamp_ms != null ? { fromLog: true } : {}),
+        startedAtMs: event.data.timestamp_ms ?? observedAtMs,
+      };
+    case "snapshot": {
+      const restored = restoredRunActivity(event.data.session?.entries ?? []);
+      if (restored.fromLog) return restored;
       return event.data.state.state.kind === "busy" &&
           !(event.data.state.state.state.kind === "run" &&
             event.data.state.state.state.state === "paused")
         ? { ...emptyRunActivityStats(), startedAtMs: observedAtMs }
         : emptyRunActivityStats();
+    }
     case "turn_start":
+      if (current.fromLog) return current;
       return {
         ...current,
         startedAtMs: current.startedAtMs ?? observedAtMs,
@@ -43,9 +73,12 @@ export function applyRunActivityEvent(
     case "usage": {
       const input = event.data.input_tokens ?? 0;
       const cacheRead = event.data.cache_read_input_tokens ?? 0;
+      const fromLog = event.data.timestamp_ms != null || current.fromLog;
       return {
         ...current,
-        startedAtMs: current.startedAtMs ?? observedAtMs,
+        ...(fromLog ? { fromLog: true } : {}),
+        requests: current.requests + (fromLog ? 1 : 0),
+        startedAtMs: current.startedAtMs ?? (fromLog ? null : observedAtMs),
         uploadTokens: current.uploadTokens + Math.max(0, input - cacheRead),
         outputTokens: current.outputTokens + (event.data.output_tokens ?? 0),
       };
diff --git a/web/workspace/src/routes/w/[workspaceId]/workers/[workerRef]/console/+page.svelte b/web/workspace/src/routes/w/[workspaceId]/workers/[workerRef]/console/+page.svelte
index d827faeb8..7091fd38d 100644
--- a/web/workspace/src/routes/w/[workspaceId]/workers/[workerRef]/console/+page.svelte
+++ b/web/workspace/src/routes/w/[workspaceId]/workers/[workerRef]/console/+page.svelte
@@ -741,6 +741,7 @@
                     event.event.event === "segment_rotated" ||
                     event.event.event === "rewind_applied" ||
                     event.event.event === "user_message" ||
+                    event.event.event === "run_end" ||
                     event.event.event === "session_entry_committed"
                 )
             ) {
diff --git a/web/workspace/src/routes/w/[workspaceId]/workers/[workerRef]/console/console-display.browser.spec.ts b/web/workspace/src/routes/w/[workspaceId]/workers/[workerRef]/console/console-display.browser.spec.ts
index 972ba2788..51a995e0c 100644
--- a/web/workspace/src/routes/w/[workspaceId]/workers/[workerRef]/console/console-display.browser.spec.ts
+++ b/web/workspace/src/routes/w/[workspaceId]/workers/[workerRef]/console/console-display.browser.spec.ts
@@ -265,6 +265,86 @@ async function selectRun(cm: EditorView) {
   await waitFor(() => expect(cm.dom.querySelector(".composer-typed-chip")).not.toBeNull());
 }
 
+test("a completed live run displays its stats below the answer", async () => {
+  const { view } = await liveComposer();
+  protocolEvent({ event: "invoke_start", data: { kind: "user_send" } });
+  protocolEvent({ event: "turn_start", data: { turn: 1 } });
+  protocolEvent({ event: "text_done", data: { text: "The final answer" } });
+  protocolEvent({ event: "usage", data: {
+    input_tokens: 2500, cache_read_input_tokens: 1000, output_tokens: 200,
+  } });
+  protocolEvent({ event: "run_end", data: { result: "finished" } });
+  protocolEvent({ event: "worker_state", data: {
+    snapshot: { last_command_id: 0, state: { kind: "idle" } },
+  } });
+  await waitFor(() => {
+    const rows = view.container.querySelectorAll(".console-line");
+    expect(rows[rows.length - 1]?.textContent).toContain("1 reqs ↑1.5k/↓200");
+    expect(view.container.querySelector(".run-stats")).not.toBeNull();
+  });
+});
+
+test("reopening Console restores completed run stats from paged history", async () => {
+  const page = historyPage([1], null);
+  const answer = page.page.turns[0].entries[1];
+  const stats = {
+    kind: "run_stats", entry_id: `run-stats:${answer.entry_id}`, timestamp: 6000,
+    provenance: "legacy_unknown", derived_from: [answer.entry_id],
+    elapsed_ms: 5000, requests: 2, upload_tokens: 1500, output_tokens: 200,
+  };
+  vi.stubGlobal("fetch", vi.fn(async (input: RequestInfo | URL) => {
+    return Response.json(String(input).includes("/session/history")
+      ? { ...page, page: { ...page.page, turns: [{ ...page.page.turns[0], entries: [...page.page.turns[0].entries, stats] }] } }
+      : { availability: "live_protocol" });
+  }));
+  for (let visit = 1; visit <= 2; visit++) {
+    const view = render(ConsolePage, { data: pageData() });
+    await waitFor(() => expect(multiplexer.subscribe).toHaveBeenCalledTimes(visit));
+    latestListener().onFrame(subscribedFrame());
+    await waitFor(() => {
+      const rows = view.container.querySelectorAll(".console-line");
+      expect(rows[rows.length - 1]?.textContent).toContain("5s ・2 reqs ↑1.5k/↓200");
+      expect(view.container.querySelectorAll(".run-stats")).toHaveLength(1);
+    });
+    view.unmount();
+  }
+});
+
+test("reopening Console keeps the Composer run clock and cumulative traffic", async () => {
+  vi.stubGlobal("fetch", vi.fn(async (input: RequestInfo | URL) =>
+    Response.json(String(input).includes("/session/history")
+      ? emptyHistoryPage() : { availability: "live_protocol" })
+  ));
+  const startedAt = Date.now() - 120_000;
+  for (let visit = 1; visit <= 2; visit++) {
+    const view = render(ConsolePage, { data: pageData() });
+    await waitFor(() => expect(multiplexer.subscribe).toHaveBeenCalledTimes(visit));
+    const snapshot = snapshotEvent();
+    if (snapshot.event !== "snapshot") throw new Error("expected snapshot");
+    snapshot.data.state = { last_command_id: 0, state: { kind: "busy", state: { kind: "run", state: "running" } } };
+    snapshot.data.session.entries = [
+      { kind: "invoke", trigger: "user_send", timestamp: startedAt, entry_id: "invoke", provenance: "legacy_unknown", derived_from: [] },
+      { kind: "usage", timestamp: startedAt + 1000, entry_id: "usage", provenance: "legacy_unknown", derived_from: [], input_tokens: 25_000, cache_read_input_tokens: 20_000, output_tokens: 300 },
+    ];
+    const frame = subscribedFrame();
+    frame.message.payload.snapshot.data.events = [snapshot];
+    latestListener().onFrame(frame);
+    await waitFor(() => {
+      const status = view.container.querySelector(".worker-run-status");
+      expect(status?.textContent).toContain("2m");
+      expect(status?.textContent).toContain("1 req");
+      expect(status?.textContent).toContain("Run ↑5.0k/↓300");
+    });
+    protocolEvent({ event: "usage", data: { timestamp_ms: Date.now(), input_tokens: 25_000, cache_read_input_tokens: 20_000, output_tokens: 100 } });
+    await waitFor(() => {
+      const status = view.container.querySelector(".worker-run-status");
+      expect(status?.textContent).toContain("2 reqs");
+      expect(status?.textContent).toContain("Run ↑10.0k/↓400");
+    });
+    view.unmount();
+  }
+});
+
 test("Console teardown cancels pending observation frames before they can read history", async () => {
   const { view, fetchMock } = await liveComposer();
   const schedule = vi.spyOn(window, "requestAnimationFrame");