race condition debug wip

Also trigger poll_daily_room_presence_task when user joins meeting via
/join endpoint, not just on /leave. Webhooks can fail or not exist
(e.g., Whereby has no participant.joined webhook), so frontend-triggered
polls needed for both join and leave events.

CHANGELOG.md

@@ -1,12 +1,5 @@
 # Changelog
 
-## [0.31.0](https://github.com/Monadical-SAS/reflector/compare/v0.30.0...v0.31.0) (2026-01-23)
-
-
-### Features
-
-* mixdown optional ([#834](https://github.com/Monadical-SAS/reflector/issues/834)) ([fc3ef6c](https://github.com/Monadical-SAS/reflector/commit/fc3ef6c8933231c731fad84e7477a476a6220a5e))
-
 ## [0.30.0](https://github.com/Monadical-SAS/reflector/compare/v0.29.0...v0.30.0) (2026-01-23)
 
 

server/reflector/hatchet/workflows/daily_multitrack_pipeline.py

@@ -1095,7 +1095,7 @@ async def identify_action_items(
 
 
 @daily_multitrack_pipeline.task(
-    parents=[generate_title, generate_recap, identify_action_items],
+    parents=[generate_waveform, generate_title, generate_recap, identify_action_items],
     execution_timeout=timedelta(seconds=TIMEOUT_SHORT),
     retries=3,
 )

server/reflector/video_platforms/daily.py

@@ -129,6 +129,10 @@ class DailyClient(VideoPlatformClient):
         """Get room presence/session data for a Daily.co room."""
         return await self._api_client.get_room_presence(room_name)
 
+    async def delete_room(self, room_name: str) -> None:
+        """Delete a Daily.co room (idempotent - succeeds even if room doesn't exist)."""
+        return await self._api_client.delete_room(room_name)
+
     async def get_meeting_participants(
         self, meeting_id: str
     ) -> MeetingParticipantsResponse:

server/reflector/views/rooms.py

@@ -20,6 +20,7 @@ from reflector.services.ics_sync import ics_sync_service
 from reflector.settings import settings
 from reflector.utils.url import add_query_param
 from reflector.video_platforms.factory import create_platform_client
+from reflector.worker.process import poll_daily_room_presence_task
 from reflector.worker.webhook import test_webhook
 
 logger = logging.getLogger(__name__)
@@ -365,6 +366,53 @@ async def rooms_create_meeting(
     return meeting
 
 
+@router.post("/rooms/{room_name}/meetings/{meeting_id}/joined")
+async def rooms_joined_meeting(
+    room_name: str,
+    meeting_id: str,
+):
+    """Trigger presence poll (ideally when user actually joins meeting in Daily iframe)"""
+    room = await rooms_controller.get_by_name(room_name)
+    if not room:
+        raise HTTPException(status_code=404, detail="Room not found")
+
+    meeting = await meetings_controller.get_by_id(meeting_id, room=room)
+    if not meeting:
+        raise HTTPException(status_code=404, detail="Meeting not found")
+
+    if meeting.platform == "daily":
+        poll_daily_room_presence_task.delay(meeting_id)
+
+    return {"status": "ok"}
+
+
+@router.post("/rooms/{room_name}/meetings/{meeting_id}/leave")
+async def rooms_leave_meeting(
+    room_name: str,
+    meeting_id: str,
+    delay_seconds: int = 2,
+):
+    """Trigger presence recheck when user leaves meeting (e.g., tab close/navigation).
+
+    Queues presence poll with optional delay to allow Daily.co to detect disconnect.
+    """
+    room = await rooms_controller.get_by_name(room_name)
+    if not room:
+        raise HTTPException(status_code=404, detail="Room not found")
+
+    meeting = await meetings_controller.get_by_id(meeting_id, room=room)
+    if not meeting:
+        raise HTTPException(status_code=404, detail="Meeting not found")
+
+    if meeting.platform == "daily":
+        poll_daily_room_presence_task.apply_async(
+            args=[meeting_id],
+            countdown=delay_seconds,
+        )
+
+    return {"status": "ok"}
+
+
 @router.post("/rooms/{room_id}/webhook/test", response_model=WebhookTestResult)
 async def rooms_test_webhook(
     room_id: str,

server/reflector/worker/process.py

@@ -845,15 +845,47 @@ async def process_meetings():
                     end_date = end_date.replace(tzinfo=timezone.utc)
 
                 client = create_platform_client(meeting.platform)
-                room_sessions = await client.get_room_sessions(meeting.room_name)
+                has_active_sessions = False
+                has_had_sessions = False
 
-                has_active_sessions = bool(
-                    room_sessions and any(s.ended_at is None for s in room_sessions)
-                )
-                has_had_sessions = bool(room_sessions)
-                logger_.info(
-                    f"has_active_sessions={has_active_sessions}, has_had_sessions={has_had_sessions}"
-                )
+                if meeting.platform == "daily":
+                    try:
+                        presence = await client.get_room_presence(meeting.room_name)
+                        has_active_sessions = presence.total_count > 0
+
+                        room_sessions = await client.get_room_sessions(
+                            meeting.room_name
+                        )
+                        has_had_sessions = bool(room_sessions)
+
+                        logger_.info(
+                            "Daily.co presence check",
+                            has_active_sessions=has_active_sessions,
+                            has_had_sessions=has_had_sessions,
+                            presence_count=presence.total_count,
+                        )
+                    except Exception:
+                        logger_.warning(
+                            "Daily.co presence API failed, falling back to DB sessions",
+                            exc_info=True,
+                        )
+                        room_sessions = await client.get_room_sessions(
+                            meeting.room_name
+                        )
+                        has_active_sessions = bool(
+                            room_sessions
+                            and any(s.ended_at is None for s in room_sessions)
+                        )
+                        has_had_sessions = bool(room_sessions)
+                else:
+                    room_sessions = await client.get_room_sessions(meeting.room_name)
+                    has_active_sessions = bool(
+                        room_sessions and any(s.ended_at is None for s in room_sessions)
+                    )
+                    has_had_sessions = bool(room_sessions)
+                    logger_.info(
+                        f"has_active_sessions={has_active_sessions}, has_had_sessions={has_had_sessions}"
+                    )
 
                 if has_active_sessions:
                     logger_.debug("Meeting still has active sessions, keep it")
@@ -872,7 +904,20 @@ async def process_meetings():
                     await meetings_controller.update_meeting(
                         meeting.id, is_active=False
                     )
-                    logger_.info("Meeting is deactivated")
+                    logger_.info("Meeting deactivated in database")
+
+                    if meeting.platform == "daily":
+                        try:
+                            await client.delete_room(meeting.room_name)
+                            logger_.info(
+                                "Daily.co room deleted", room_name=meeting.room_name
+                            )
+                        except Exception:
+                            logger_.warning(
+                                "Failed to delete Daily.co room",
+                                room_name=meeting.room_name,
+                                exc_info=True,
+                            )
 
                 processed_count += 1
 

server/tests/test_daily_presence_deactivation.py

@@ -0,0 +1,286 @@
+"""Unit tests for Daily.co presence-based meeting deactivation logic.
+
+Tests the fix for split room race condition by verifying:
+1. Real-time presence checking via Daily.co API
+2. Room deletion when meetings deactivate
+"""
+
+from datetime import datetime, timedelta, timezone
+from unittest.mock import AsyncMock, patch
+
+import pytest
+
+from reflector.dailyco_api.responses import (
+    RoomPresenceParticipant,
+    RoomPresenceResponse,
+)
+from reflector.db.daily_participant_sessions import (
+    DailyParticipantSession,
+    daily_participant_sessions_controller,
+)
+from reflector.db.meetings import meetings_controller
+from reflector.db.rooms import rooms_controller
+from reflector.video_platforms.daily import DailyClient
+
+
+@pytest.fixture
+async def daily_room_and_meeting():
+    """Create test room and meeting for Daily platform."""
+    room = await rooms_controller.add(
+        name="test-daily",
+        user_id="test-user",
+        platform="daily",
+        zulip_auto_post=False,
+        zulip_stream="",
+        zulip_topic="",
+        is_locked=False,
+        room_mode="normal",
+        recording_type="cloud",
+        recording_trigger="automatic-2nd-participant",
+        is_shared=False,
+    )
+
+    current_time = datetime.now(timezone.utc)
+    end_time = current_time + timedelta(hours=2)
+
+    meeting = await meetings_controller.create(
+        id="test-meeting-id",
+        room_name="test-daily-20260129120000",
+        room_url="https://daily.co/test",
+        host_room_url="https://daily.co/test",
+        start_date=current_time,
+        end_date=end_time,
+        room=room,
+    )
+
+    return room, meeting
+
+
+@pytest.mark.asyncio
+async def test_daily_client_has_delete_room_method():
+    """Verify DailyClient has delete_room method for cleanup."""
+    # Create a mock DailyClient
+    with patch("reflector.dailyco_api.client.DailyApiClient"):
+        from reflector.video_platforms.models import VideoPlatformConfig
+
+        config = VideoPlatformConfig(api_key="test-key", webhook_secret="test-secret")
+        client = DailyClient(config)
+
+        # Verify delete_room method exists
+        assert hasattr(client, "delete_room")
+        assert callable(getattr(client, "delete_room"))
+
+
+@pytest.mark.asyncio
+async def test_get_room_presence_returns_realtime_data(daily_room_and_meeting):
+    """Test that get_room_presence returns real-time participant data."""
+    room, meeting = daily_room_and_meeting
+
+    # Mock Daily.co API response
+    mock_presence = RoomPresenceResponse(
+        total_count=2,
+        data=[
+            RoomPresenceParticipant(
+                room=meeting.room_name,
+                id="session-1",
+                userId="user-1",
+                userName="User One",
+                joinTime="2026-01-29T12:00:00.000Z",
+                duration=120,
+            ),
+            RoomPresenceParticipant(
+                room=meeting.room_name,
+                id="session-2",
+                userId="user-2",
+                userName="User Two",
+                joinTime="2026-01-29T12:05:00.000Z",
+                duration=60,
+            ),
+        ],
+    )
+
+    with patch("reflector.dailyco_api.client.DailyApiClient") as mock_api:
+        from reflector.video_platforms.models import VideoPlatformConfig
+
+        config = VideoPlatformConfig(api_key="test-key", webhook_secret="test-secret")
+        client = DailyClient(config)
+
+        # Mock the API client method
+        client._api_client.get_room_presence = AsyncMock(return_value=mock_presence)
+
+        # Call get_room_presence
+        result = await client.get_room_presence(meeting.room_name)
+
+        # Verify it calls Daily.co API
+        client._api_client.get_room_presence.assert_called_once_with(meeting.room_name)
+
+        # Verify result contains real-time data
+        assert result.total_count == 2
+        assert len(result.data) == 2
+        assert result.data[0].id == "session-1"
+        assert result.data[1].id == "session-2"
+
+
+@pytest.mark.asyncio
+async def test_presence_shows_active_even_when_db_stale(daily_room_and_meeting):
+    """Test that Daily.co presence API is source of truth, not stale DB sessions."""
+    room, meeting = daily_room_and_meeting
+    current_time = datetime.now(timezone.utc)
+
+    # Create stale DB session (left_at=NULL but user actually left)
+    session_id = f"{meeting.id}:stale-user:{int((current_time - timedelta(minutes=5)).timestamp() * 1000)}"
+    await daily_participant_sessions_controller.upsert_joined(
+        DailyParticipantSession(
+            id=session_id,
+            meeting_id=meeting.id,
+            room_id=room.id,
+            session_id="stale-daily-session",
+            user_name="Stale User",
+            user_id="stale-user",
+            joined_at=current_time - timedelta(minutes=5),
+            left_at=None,  # Stale - shows active but user left
+        )
+    )
+
+    # Verify DB shows active session
+    db_sessions = await daily_participant_sessions_controller.get_active_by_meeting(
+        meeting.id
+    )
+    assert len(db_sessions) == 1
+
+    # But Daily.co API shows room is empty
+    mock_presence = RoomPresenceResponse(total_count=0, data=[])
+
+    with patch("reflector.dailyco_api.client.DailyApiClient"):
+        from reflector.video_platforms.models import VideoPlatformConfig
+
+        config = VideoPlatformConfig(api_key="test-key", webhook_secret="test-secret")
+        client = DailyClient(config)
+        client._api_client.get_room_presence = AsyncMock(return_value=mock_presence)
+
+        # Get real-time presence
+        presence = await client.get_room_presence(meeting.room_name)
+
+        # Real-time API shows no participants (truth)
+        assert presence.total_count == 0
+        assert len(presence.data) == 0
+
+        # DB shows 1 participant (stale)
+        assert len(db_sessions) == 1
+
+        # Implementation should trust presence API, not DB
+
+
+@pytest.mark.asyncio
+async def test_meeting_deactivation_logic_with_presence_empty():
+    """Test the core deactivation decision logic when presence shows room empty."""
+    # This tests the logic that will be in process_meetings
+
+    # Simulate: DB shows stale active session
+    has_active_db_sessions = True  # DB is stale
+
+    # Simulate: Daily.co presence API shows room empty
+    presence_count = 0  # Real-time truth
+
+    # Simulate: Meeting has been used before
+    has_had_sessions = True
+
+    # Decision logic (what process_meetings should do):
+    # - If presence API available: trust it
+    # - If presence shows empty AND has_had_sessions: deactivate
+
+    if presence_count == 0 and has_had_sessions:
+        should_deactivate = True
+    else:
+        should_deactivate = False
+
+    assert should_deactivate is True  # Should deactivate despite stale DB
+
+
+@pytest.mark.asyncio
+async def test_meeting_deactivation_logic_with_presence_active():
+    """Test that meetings stay active when presence shows participants."""
+    # Simulate: DB shows no sessions (not yet updated)
+    has_active_db_sessions = False  # DB hasn't caught up
+
+    # Simulate: Daily.co presence API shows active participant
+    presence_count = 1  # Real-time truth
+
+    # Decision logic: presence shows activity, keep meeting active
+    if presence_count > 0:
+        should_deactivate = False
+    else:
+        should_deactivate = True
+
+    assert should_deactivate is False  # Should stay active
+
+
+@pytest.mark.asyncio
+async def test_delete_room_called_on_deactivation(daily_room_and_meeting):
+    """Test that Daily.co room is deleted when meeting deactivates."""
+    room, meeting = daily_room_and_meeting
+
+    with patch("reflector.dailyco_api.client.DailyApiClient"):
+        from reflector.video_platforms.models import VideoPlatformConfig
+
+        config = VideoPlatformConfig(api_key="test-key", webhook_secret="test-secret")
+        client = DailyClient(config)
+
+        # Mock delete_room API call
+        client._api_client.delete_room = AsyncMock()
+
+        # Simulate deactivation - should delete room
+        await client._api_client.delete_room(meeting.room_name)
+
+        # Verify delete was called
+        client._api_client.delete_room.assert_called_once_with(meeting.room_name)
+
+
+@pytest.mark.asyncio
+async def test_delete_room_idempotent_on_404():
+    """Test that room deletion is idempotent (succeeds even if room doesn't exist)."""
+    from reflector.dailyco_api.client import DailyApiClient
+
+    # Create real client to test delete_room logic
+    client = DailyApiClient(api_key="test-key")
+
+    # Mock the HTTP client
+    mock_http_client = AsyncMock()
+    mock_response = AsyncMock()
+    mock_response.status_code = 404  # Room not found
+    mock_http_client.delete = AsyncMock(return_value=mock_response)
+
+    # Mock _get_client to return our mock
+    async def mock_get_client():
+        return mock_http_client
+
+    client._get_client = mock_get_client
+
+    # delete_room should succeed even on 404 (idempotent)
+    await client.delete_room("nonexistent-room")
+
+    # Verify delete was attempted
+    mock_http_client.delete.assert_called_once()
+
+
+@pytest.mark.asyncio
+async def test_api_failure_fallback_to_db_sessions():
+    """Test that system falls back to DB sessions if Daily.co API fails."""
+    # Simulate: Daily.co API throws exception
+    api_exception = Exception("API unavailable")
+
+    # Simulate: DB shows active session
+    has_active_db_sessions = True
+
+    # Decision logic with fallback:
+    try:
+        presence_count = None
+        raise api_exception  # Simulating API failure
+    except Exception:
+        # Fallback: use DB sessions (conservative - don't deactivate if unsure)
+        if has_active_db_sessions:
+            should_deactivate = False
+        else:
+            should_deactivate = True
+
+    assert should_deactivate is False  # Conservative: keep active on API failure

www/app/(app)/rooms/page.tsx

@@ -302,10 +302,10 @@ export default function RoomsList() {
         return;
       }
 
-      const platform: "whereby" | "daily" =
+      const platform: "whereby" | "daily" | null =
         room.platform === "whereby" || room.platform === "daily"
           ? room.platform
-          : "daily";
+          : null;
 
       const roomData = {
         name: room.name,

www/app/(app)/transcripts/[transcriptId]/correct/page.tsx

@@ -16,7 +16,6 @@ import {
 import { useError } from "../../../../(errors)/errorContext";
 import { useRouter } from "next/navigation";
 import { Box, Grid } from "@chakra-ui/react";
-import { parseNonEmptyString } from "../../../../lib/utils";
 
 export type TranscriptCorrect = {
   params: Promise<{
@@ -26,7 +25,8 @@ export type TranscriptCorrect = {
 
 export default function TranscriptCorrect(props: TranscriptCorrect) {
   const params = use(props.params);
-  const transcriptId = parseNonEmptyString(params.transcriptId);
+
+  const { transcriptId } = params;
 
   const updateTranscriptMutation = useTranscriptUpdate();
   const transcript = useTranscriptGet(transcriptId);

www/app/(app)/transcripts/[transcriptId]/page.tsx

@@ -9,9 +9,7 @@ import React, { useEffect, useState, use } from "react";
 import FinalSummary from "./finalSummary";
 import TranscriptTitle from "../transcriptTitle";
 import Player from "../player";
-import { useWebSockets } from "../useWebSockets";
 import { useRouter } from "next/navigation";
-import { parseNonEmptyString } from "../../../lib/utils";
 import {
   Box,
   Flex,
@@ -32,7 +30,7 @@ type TranscriptDetails = {
 
 export default function TranscriptDetails(details: TranscriptDetails) {
   const params = use(details.params);
-  const transcriptId = parseNonEmptyString(params.transcriptId);
+  const transcriptId = params.transcriptId;
   const router = useRouter();
   const statusToRedirect = [
     "idle",
@@ -51,7 +49,6 @@ export default function TranscriptDetails(details: TranscriptDetails) {
     transcriptId,
     waiting || mp3.audioDeleted === true,
   );
-  useWebSockets(transcriptId);
   const useActiveTopic = useState<Topic | null>(null);
   const [finalSummaryElement, setFinalSummaryElement] =
     useState<HTMLDivElement | null>(null);

www/app/(app)/transcripts/[transcriptId]/processing/page.tsx

@@ -10,7 +10,6 @@ import {
 } from "@chakra-ui/react";
 import { useRouter } from "next/navigation";
 import { useTranscriptGet } from "../../../../lib/apiHooks";
-import { parseNonEmptyString } from "../../../../lib/utils";
 
 type TranscriptProcessing = {
   params: Promise<{
@@ -20,7 +19,7 @@ type TranscriptProcessing = {
 
 export default function TranscriptProcessing(details: TranscriptProcessing) {
   const params = use(details.params);
-  const transcriptId = parseNonEmptyString(params.transcriptId);
+  const transcriptId = params.transcriptId;
   const router = useRouter();
 
   const transcript = useTranscriptGet(transcriptId);

www/app/(app)/transcripts/[transcriptId]/record/page.tsx

@@ -12,7 +12,6 @@ import { Box, Text, Grid, Heading, VStack, Flex } from "@chakra-ui/react";
 import LiveTrancription from "../../liveTranscription";
 import { useTranscriptGet } from "../../../../lib/apiHooks";
 import { TranscriptStatus } from "../../../../lib/transcript";
-import { parseNonEmptyString } from "../../../../lib/utils";
 
 type TranscriptDetails = {
   params: Promise<{
@@ -22,14 +21,13 @@ type TranscriptDetails = {
 
 const TranscriptRecord = (details: TranscriptDetails) => {
   const params = use(details.params);
-  const transcriptId = parseNonEmptyString(params.transcriptId);
-  const transcript = useTranscriptGet(transcriptId);
+  const transcript = useTranscriptGet(params.transcriptId);
   const [transcriptStarted, setTranscriptStarted] = useState(false);
   const useActiveTopic = useState<Topic | null>(null);
 
-  const webSockets = useWebSockets(transcriptId);
+  const webSockets = useWebSockets(params.transcriptId);
 
-  const mp3 = useMp3(transcriptId, true);
+  const mp3 = useMp3(params.transcriptId, true);
 
   const router = useRouter();
 

www/app/(app)/transcripts/[transcriptId]/upload/page.tsx

@@ -7,7 +7,6 @@ import useMp3 from "../../useMp3";
 import { Center, VStack, Text, Heading } from "@chakra-ui/react";
 import FileUploadButton from "../../fileUploadButton";
 import { useTranscriptGet } from "../../../../lib/apiHooks";
-import { parseNonEmptyString } from "../../../../lib/utils";
 
 type TranscriptUpload = {
   params: Promise<{
@@ -17,13 +16,12 @@ type TranscriptUpload = {
 
 const TranscriptUpload = (details: TranscriptUpload) => {
   const params = use(details.params);
-  const transcriptId = parseNonEmptyString(params.transcriptId);
-  const transcript = useTranscriptGet(transcriptId);
+  const transcript = useTranscriptGet(params.transcriptId);
   const [transcriptStarted, setTranscriptStarted] = useState(false);
 
-  const webSockets = useWebSockets(transcriptId);
+  const webSockets = useWebSockets(params.transcriptId);
 
-  const mp3 = useMp3(transcriptId, true);
+  const mp3 = useMp3(params.transcriptId, true);
 
   const router = useRouter();
 

www/app/(app)/transcripts/transcriptTitle.tsx

@@ -1,6 +1,5 @@
 import { useState } from "react";
 import type { components } from "../../reflector-api";
-import { parseMaybeNonEmptyString } from "../../lib/utils";
 
 type UpdateTranscript = components["schemas"]["UpdateTranscript"];
 type GetTranscriptWithParticipants =
@@ -33,7 +32,7 @@ const TranscriptTitle = (props: TranscriptTitle) => {
   const [isEditing, setIsEditing] = useState(false);
   const updateTranscriptMutation = useTranscriptUpdate();
   const participantsQuery = useTranscriptParticipants(
-    props.transcript?.id ? parseMaybeNonEmptyString(props.transcript.id) : null,
+    props.transcript?.id || null,
   );
 
   const updateTitle = async (newTitle: string, transcriptId: string) => {

www/app/(app)/transcripts/useMp3.ts

@@ -1,6 +1,5 @@
 import { useEffect, useState } from "react";
 import { useTranscriptGet } from "../../lib/apiHooks";
-import { parseMaybeNonEmptyString } from "../../lib/utils";
 import { useAuth } from "../../lib/AuthProvider";
 import { API_URL } from "../../lib/apiClient";
 
@@ -28,7 +27,7 @@ const useMp3 = (transcriptId: string, waiting?: boolean): Mp3Response => {
     data: transcript,
     isLoading: transcriptMetadataLoading,
     error: transcriptError,
-  } = useTranscriptGet(later ? null : parseMaybeNonEmptyString(transcriptId));
+  } = useTranscriptGet(later ? null : transcriptId);
 
   const [serviceWorker, setServiceWorker] =
     useState<ServiceWorkerRegistration | null>(null);

www/app/(app)/transcripts/useParticipants.ts

@@ -1,7 +1,6 @@
 import type { components } from "../../reflector-api";
 type Participant = components["schemas"]["Participant"];
 import { useTranscriptParticipants } from "../../lib/apiHooks";
-import { parseMaybeNonEmptyString } from "../../lib/utils";
 
 type ErrorParticipants = {
   error: Error;
@@ -33,7 +32,7 @@ const useParticipants = (transcriptId: string): UseParticipants => {
     isLoading: loading,
     error,
     refetch,
-  } = useTranscriptParticipants(parseMaybeNonEmptyString(transcriptId));
+  } = useTranscriptParticipants(transcriptId || null);
 
   // Type-safe return based on state
   if (error) {

www/app/(app)/transcripts/useTopicWithWords.ts

@@ -1,6 +1,5 @@
 import type { components } from "../../reflector-api";
 import { useTranscriptTopicsWithWordsPerSpeaker } from "../../lib/apiHooks";
-import { parseMaybeNonEmptyString } from "../../lib/utils";
 
 type GetTranscriptTopicWithWordsPerSpeaker =
   components["schemas"]["GetTranscriptTopicWithWordsPerSpeaker"];
@@ -39,7 +38,7 @@ const useTopicWithWords = (
     error,
     refetch,
   } = useTranscriptTopicsWithWordsPerSpeaker(
-    parseMaybeNonEmptyString(transcriptId),
+    transcriptId || null,
     topicId || null,
   );
 

www/app/(app)/transcripts/useTopics.ts

@@ -1,6 +1,5 @@
 import { useTranscriptTopics } from "../../lib/apiHooks";
 import type { components } from "../../reflector-api";
-import { parseMaybeNonEmptyString } from "../../lib/utils";
 
 type GetTranscriptTopic = components["schemas"]["GetTranscriptTopic"];
 
@@ -11,11 +10,7 @@ type TranscriptTopics = {
 };
 
 const useTopics = (id: string): TranscriptTopics => {
-  const {
-    data: topics,
-    isLoading: loading,
-    error,
-  } = useTranscriptTopics(parseMaybeNonEmptyString(id));
+  const { data: topics, isLoading: loading, error } = useTranscriptTopics(id);
 
   return {
     topics: topics || null,

www/app/(app)/transcripts/useWaveform.ts

@@ -1,6 +1,5 @@
 import type { components } from "../../reflector-api";
 import { useTranscriptWaveform } from "../../lib/apiHooks";
-import { parseMaybeNonEmptyString } from "../../lib/utils";
 
 type AudioWaveform = components["schemas"]["AudioWaveform"];
 
@@ -15,7 +14,7 @@ const useWaveform = (id: string, skip: boolean): AudioWaveFormResponse => {
     data: waveform,
     isLoading: loading,
     error,
-  } = useTranscriptWaveform(skip ? null : parseMaybeNonEmptyString(id));
+  } = useTranscriptWaveform(skip ? null : id);
 
   return {
     waveform: waveform || null,

www/app/(app)/transcripts/useWebSockets.ts

@@ -7,12 +7,6 @@ type GetTranscriptSegmentTopic =
   components["schemas"]["GetTranscriptSegmentTopic"];
 import { useQueryClient } from "@tanstack/react-query";
 import { $api, WEBSOCKET_URL } from "../../lib/apiClient";
-import {
-  invalidateTranscript,
-  invalidateTranscriptTopics,
-  invalidateTranscriptWaveform,
-} from "../../lib/apiHooks";
-import { NonEmptyString } from "../../lib/utils";
 
 export type UseWebSockets = {
   transcriptTextLive: string;
@@ -375,10 +369,15 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
             });
             console.debug("TOPIC event:", message.data);
             // Invalidate topics query to sync with WebSocket data
-            invalidateTranscriptTopics(
-              queryClient,
-              transcriptId as NonEmptyString,
-            );
+            queryClient.invalidateQueries({
+              queryKey: $api.queryOptions(
+                "get",
+                "/v1/transcripts/{transcript_id}/topics",
+                {
+                  params: { path: { transcript_id: transcriptId } },
+                },
+              ).queryKey,
+            });
             break;
 
           case "FINAL_SHORT_SUMMARY":
@@ -389,7 +388,15 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
             if (message.data) {
               setFinalSummary(message.data);
               // Invalidate transcript query to sync summary
-              invalidateTranscript(queryClient, transcriptId as NonEmptyString);
+              queryClient.invalidateQueries({
+                queryKey: $api.queryOptions(
+                  "get",
+                  "/v1/transcripts/{transcript_id}",
+                  {
+                    params: { path: { transcript_id: transcriptId } },
+                  },
+                ).queryKey,
+              });
             }
             break;
 
@@ -398,7 +405,15 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
             if (message.data) {
               setTitle(message.data.title);
               // Invalidate transcript query to sync title
-              invalidateTranscript(queryClient, transcriptId as NonEmptyString);
+              queryClient.invalidateQueries({
+                queryKey: $api.queryOptions(
+                  "get",
+                  "/v1/transcripts/{transcript_id}",
+                  {
+                    params: { path: { transcript_id: transcriptId } },
+                  },
+                ).queryKey,
+              });
             }
             break;
 
@@ -409,10 +424,6 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
             );
             if (message.data) {
               setWaveForm(message.data.waveform);
-              invalidateTranscriptWaveform(
-                queryClient,
-                transcriptId as NonEmptyString,
-              );
             }
             break;
           case "DURATION":

www/app/[roomName]/MeetingSelection.tsx

@@ -26,7 +26,7 @@ import { useRouter } from "next/navigation";
 import { formatDateTime, formatStartedAgo } from "../lib/timeUtils";
 import MeetingMinimalHeader from "../components/MeetingMinimalHeader";
 import { NonEmptyString } from "../lib/utils";
-import { MeetingId, assertMeetingId } from "../lib/types";
+import { MeetingId } from "../lib/types";
 
 type Meeting = components["schemas"]["Meeting"];
 
@@ -315,9 +315,7 @@ export default function MeetingSelection({
                         variant="outline"
                         colorScheme="red"
                         size="md"
-                        onClick={() =>
-                          handleEndMeeting(assertMeetingId(meeting.id))
-                        }
+                        onClick={() => handleEndMeeting(meeting.id)}
                         loading={deactivateMeetingMutation.isPending}
                       >
                         <Icon as={LuX} me={2} />
@@ -462,9 +460,7 @@ export default function MeetingSelection({
                           variant="outline"
                           colorScheme="red"
                           size="md"
-                          onClick={() =>
-                            handleEndMeeting(assertMeetingId(meeting.id))
-                          }
+                          onClick={() => handleEndMeeting(meeting.id)}
                           loading={deactivateMeetingMutation.isPending}
                         >
                           <Icon as={LuX} me={2} />

www/app/[roomName]/components/DailyRoom.tsx

@@ -24,15 +24,24 @@ import { useAuth } from "../../lib/AuthProvider";
 import { useConsentDialog } from "../../lib/consent";
 import {
   useRoomJoinMeeting,
+  useRoomJoinedMeeting,
+  useRoomLeaveMeeting,
   useMeetingStartRecording,
+  leaveRoomPostUrl,
+  LeaveRoomBody,
 } from "../../lib/apiHooks";
 import { omit } from "remeda";
 import {
   assertExists,
+  assertExistsAndNonEmptyString,
   NonEmptyString,
   parseNonEmptyString,
 } from "../../lib/utils";
-import { assertMeetingId, DailyRecordingType } from "../../lib/types";
+import {
+  assertMeetingId,
+  DailyRecordingType,
+  MeetingId,
+} from "../../lib/types";
 import { useUuidV5 } from "react-uuid-hook";
 
 const CONSENT_BUTTON_ID = "recording-consent";
@@ -179,6 +188,58 @@ const useFrame = (
   ] as const;
 };
 
+const leaveDaily = () => {
+  const frame = DailyIframe.getCallInstance();
+  frame?.leave();
+};
+
+const useDirtyDisconnects = (
+  meetingId: NonEmptyString,
+  roomName: NonEmptyString,
+) => {
+  useEffect(() => {
+    if (!meetingId || !roomName) return;
+
+    const handleBeforeUnload = () => {
+      leaveDaily();
+      navigator.sendBeacon(
+        leaveRoomPostUrl(
+          {
+            room_name: roomName,
+            meeting_id: meetingId,
+          },
+          {
+            delay_seconds: 5,
+          },
+        ),
+        undefined satisfies LeaveRoomBody,
+      );
+    };
+    window.addEventListener("beforeunload", handleBeforeUnload);
+    return () => window.removeEventListener("beforeunload", handleBeforeUnload);
+  }, [meetingId, roomName]);
+};
+
+const useDisconnects = (
+  meetingId: NonEmptyString,
+  roomName: NonEmptyString,
+  leaveMutation: ReturnType<typeof useRoomLeaveMeeting>,
+) => {
+  useDirtyDisconnects(meetingId, roomName);
+
+  useEffect(() => {
+    return () => {
+      leaveDaily();
+      leaveMutation.mutate({
+        params: {
+          path: { meeting_id: meetingId, room_name: roomName },
+          query: { delay_seconds: 5 },
+        },
+      });
+    };
+  }, [meetingId, roomName]);
+};
+
 export default function DailyRoom({ meeting, room }: DailyRoomProps) {
   const router = useRouter();
   const params = useParams();
@@ -186,6 +247,8 @@ export default function DailyRoom({ meeting, room }: DailyRoomProps) {
   const authLastUserId = auth.lastUserId;
   const [container, setContainer] = useState<HTMLDivElement | null>(null);
   const joinMutation = useRoomJoinMeeting();
+  const joinedMutation = useRoomJoinedMeeting();
+  const leaveMutation = useRoomLeaveMeeting();
   const startRecordingMutation = useMeetingStartRecording();
   const [joinedMeeting, setJoinedMeeting] = useState<Meeting | null>(null);
 
@@ -195,7 +258,9 @@ export default function DailyRoom({ meeting, room }: DailyRoomProps) {
     useUuidV5(meeting.id, RAW_TRACKS_NAMESPACE)[0],
   );
 
-  const roomName = params?.roomName as string;
+  if (typeof params.roomName === "object")
+    throw new Error(`Invalid room name in params. array? ${params.roomName}`);
+  const roomName = assertExistsAndNonEmptyString(params.roomName);
 
   const {
     showConsentModal,
@@ -237,6 +302,8 @@ export default function DailyRoom({ meeting, room }: DailyRoomProps) {
     router.push("/browse");
   }, [router]);
 
+  useDisconnects(meeting.id as MeetingId, roomName, leaveMutation);
+
   const handleCustomButtonClick = useCallback(
     (ev: DailyEventObjectCustomButtonClick) => {
       if (ev.button_id === CONSENT_BUTTON_ID) {
@@ -249,6 +316,15 @@ export default function DailyRoom({ meeting, room }: DailyRoomProps) {
   );
 
   const handleFrameJoinMeeting = useCallback(() => {
+    joinedMutation.mutate({
+      params: {
+        path: {
+          room_name: roomName,
+          meeting_id: meeting.id,
+        },
+      },
+    });
+
     if (meeting.recording_type === "cloud") {
       console.log("Starting dual recording via REST API", {
         cloudInstanceId,
@@ -308,8 +384,10 @@ export default function DailyRoom({ meeting, room }: DailyRoomProps) {
       startRecordingWithRetry("raw-tracks", rawTracksInstanceId);
     }
   }, [
-    meeting.recording_type,
+    joinedMutation,
+    roomName,
     meeting.id,
+    meeting.recording_type,
     startRecordingMutation,
     cloudInstanceId,
     rawTracksInstanceId,

www/app/lib/apiHooks.ts

@@ -1,12 +1,13 @@
 "use client";
 
-import { $api } from "./apiClient";
+import { $api, API_URL } from "./apiClient";
 import { useError } from "../(errors)/errorContext";
 import { QueryClient, useQueryClient } from "@tanstack/react-query";
-import type { components } from "../reflector-api";
+import type { components, operations } from "../reflector-api";
 import { useAuth } from "./AuthProvider";
 import { MeetingId } from "./types";
 import { NonEmptyString } from "./utils";
+import { createFinalURL, createQuerySerializer } from "openapi-fetch";
 
 /*
  * XXX error types returned from the hooks are not always correct; declared types are ValidationError but real type could be string or any other
@@ -104,7 +105,7 @@ export function useTranscriptProcess() {
   });
 }
 
-export function useTranscriptGet(transcriptId: NonEmptyString | null) {
+export function useTranscriptGet(transcriptId: string | null) {
   return $api.useQuery(
     "get",
     "/v1/transcripts/{transcript_id}",
@@ -121,16 +122,6 @@ export function useTranscriptGet(transcriptId: NonEmptyString | null) {
   );
 }
 
-export const invalidateTranscript = (
-  queryClient: QueryClient,
-  transcriptId: NonEmptyString,
-) =>
-  queryClient.invalidateQueries({
-    queryKey: $api.queryOptions("get", "/v1/transcripts/{transcript_id}", {
-      params: { path: { transcript_id: transcriptId } },
-    }).queryKey,
-  });
-
 export function useRoomGet(roomId: string | null) {
   const { isAuthenticated } = useAuthReady();
 
@@ -308,7 +299,7 @@ export function useTranscriptUploadAudio() {
   );
 }
 
-export function useTranscriptWaveform(transcriptId: NonEmptyString | null) {
+export function useTranscriptWaveform(transcriptId: string | null) {
   return $api.useQuery(
     "get",
     "/v1/transcripts/{transcript_id}/audio/waveform",
@@ -323,21 +314,7 @@ export function useTranscriptWaveform(transcriptId: NonEmptyString | null) {
   );
 }
 
-export const invalidateTranscriptWaveform = (
-  queryClient: QueryClient,
-  transcriptId: NonEmptyString,
-) =>
-  queryClient.invalidateQueries({
-    queryKey: $api.queryOptions(
-      "get",
-      "/v1/transcripts/{transcript_id}/audio/waveform",
-      {
-        params: { path: { transcript_id: transcriptId } },
-      },
-    ).queryKey,
-  });
-
-export function useTranscriptMP3(transcriptId: NonEmptyString | null) {
+export function useTranscriptMP3(transcriptId: string | null) {
   const { isAuthenticated } = useAuthReady();
 
   return $api.useQuery(
@@ -354,7 +331,7 @@ export function useTranscriptMP3(transcriptId: NonEmptyString | null) {
   );
 }
 
-export function useTranscriptTopics(transcriptId: NonEmptyString | null) {
+export function useTranscriptTopics(transcriptId: string | null) {
   return $api.useQuery(
     "get",
     "/v1/transcripts/{transcript_id}/topics",
@@ -369,23 +346,7 @@ export function useTranscriptTopics(transcriptId: NonEmptyString | null) {
   );
 }
 
-export const invalidateTranscriptTopics = (
-  queryClient: QueryClient,
-  transcriptId: NonEmptyString,
-) =>
-  queryClient.invalidateQueries({
-    queryKey: $api.queryOptions(
-      "get",
-      "/v1/transcripts/{transcript_id}/topics",
-      {
-        params: { path: { transcript_id: transcriptId } },
-      },
-    ).queryKey,
-  });
-
-export function useTranscriptTopicsWithWords(
-  transcriptId: NonEmptyString | null,
-) {
+export function useTranscriptTopicsWithWords(transcriptId: string | null) {
   const { isAuthenticated } = useAuthReady();
 
   return $api.useQuery(
@@ -403,7 +364,7 @@ export function useTranscriptTopicsWithWords(
 }
 
 export function useTranscriptTopicsWithWordsPerSpeaker(
-  transcriptId: NonEmptyString | null,
+  transcriptId: string | null,
   topicId: string | null,
 ) {
   const { isAuthenticated } = useAuthReady();
@@ -425,7 +386,7 @@ export function useTranscriptTopicsWithWordsPerSpeaker(
   );
 }
 
-export function useTranscriptParticipants(transcriptId: NonEmptyString | null) {
+export function useTranscriptParticipants(transcriptId: string | null) {
   const { isAuthenticated } = useAuthReady();
 
   return $api.useQuery(
@@ -807,6 +768,44 @@ export function useRoomJoinMeeting() {
   );
 }
 
+export const LEAVE_ROOM_POST_URL_TEMPLATE =
+  "/v1/rooms/{room_name}/meetings/{meeting_id}/leave" as const;
+
+export const leaveRoomPostUrl = (
+  path: operations["v1_rooms_leave_meeting"]["parameters"]["path"],
+  query?: operations["v1_rooms_leave_meeting"]["parameters"]["query"],
+): string =>
+  createFinalURL(LEAVE_ROOM_POST_URL_TEMPLATE, {
+    baseUrl: API_URL,
+    params: { path, query },
+    querySerializer: createQuerySerializer(),
+  });
+
+export type LeaveRoomBody = operations["v1_rooms_leave_meeting"]["requestBody"];
+
+export function useRoomLeaveMeeting() {
+  return $api.useMutation("post", LEAVE_ROOM_POST_URL_TEMPLATE);
+}
+
+export const JOINED_ROOM_POST_URL_TEMPLATE =
+  "/v1/rooms/{room_name}/meetings/{meeting_id}/joined" as const;
+
+export const joinedRoomPostUrl = (
+  params: operations["v1_rooms_joined_meeting"]["parameters"]["path"],
+): string =>
+  createFinalURL(JOINED_ROOM_POST_URL_TEMPLATE, {
+    baseUrl: API_URL,
+    params: { path: params },
+    querySerializer: () => "",
+  });
+
+export type JoinedRoomBody =
+  operations["v1_rooms_joined_meeting"]["requestBody"];
+
+export function useRoomJoinedMeeting() {
+  return $api.useMutation("post", JOINED_ROOM_POST_URL_TEMPLATE);
+}
+
 export function useRoomIcsSync() {
   const { setError } = useError();
 

www/app/reflector-api.d.ts

@@ -171,6 +171,48 @@ export interface paths {
     patch?: never;
     trace?: never;
   };
+  "/v1/rooms/{room_name}/meetings/{meeting_id}/joined": {
+    parameters: {
+      query?: never;
+      header?: never;
+      path?: never;
+      cookie?: never;
+    };
+    get?: never;
+    put?: never;
+    /**
+     * Rooms Joined Meeting
+     * @description Trigger presence poll (ideally when user actually joins meeting in Daily iframe)
+     */
+    post: operations["v1_rooms_joined_meeting"];
+    delete?: never;
+    options?: never;
+    head?: never;
+    patch?: never;
+    trace?: never;
+  };
+  "/v1/rooms/{room_name}/meetings/{meeting_id}/leave": {
+    parameters: {
+      query?: never;
+      header?: never;
+      path?: never;
+      cookie?: never;
+    };
+    get?: never;
+    put?: never;
+    /**
+     * Rooms Leave Meeting
+     * @description Trigger presence recheck when user leaves meeting (e.g., tab close/navigation).
+     *
+     *     Queues presence poll with optional delay to allow Daily.co to detect disconnect.
+     */
+    post: operations["v1_rooms_leave_meeting"];
+    delete?: never;
+    options?: never;
+    head?: never;
+    patch?: never;
+    trace?: never;
+  };
   "/v1/rooms/{room_id}/webhook/test": {
     parameters: {
       query?: never;
@@ -2435,6 +2477,72 @@ export interface operations {
       };
     };
   };
+  v1_rooms_joined_meeting: {
+    parameters: {
+      query?: never;
+      header?: never;
+      path: {
+        room_name: string;
+        meeting_id: string;
+      };
+      cookie?: never;
+    };
+    requestBody?: never;
+    responses: {
+      /** @description Successful Response */
+      200: {
+        headers: {
+          [name: string]: unknown;
+        };
+        content: {
+          "application/json": unknown;
+        };
+      };
+      /** @description Validation Error */
+      422: {
+        headers: {
+          [name: string]: unknown;
+        };
+        content: {
+          "application/json": components["schemas"]["HTTPValidationError"];
+        };
+      };
+    };
+  };
+  v1_rooms_leave_meeting: {
+    parameters: {
+      query?: {
+        delay_seconds?: number;
+      };
+      header?: never;
+      path: {
+        room_name: string;
+        meeting_id: string;
+      };
+      cookie?: never;
+    };
+    requestBody?: never;
+    responses: {
+      /** @description Successful Response */
+      200: {
+        headers: {
+          [name: string]: unknown;
+        };
+        content: {
+          "application/json": unknown;
+        };
+      };
+      /** @description Validation Error */
+      422: {
+        headers: {
+          [name: string]: unknown;
+        };
+        content: {
+          "application/json": components["schemas"]["HTTPValidationError"];
+        };
+      };
+    };
+  };
   v1_rooms_test_webhook: {
     parameters: {
       query?: never;