race condition debug wip

rejoin tags backend
2026-02-05 02:16:46 +00:00 · 2026-01-30 14:38:12 -05:00 · 2026-01-30 14:37:53 -05:00 · 2026-01-29 15:57:09 -05:00 · 2026-01-26 18:05:44 -05:00 · 2026-01-26 17:59:33 -05:00
38 changed files with 804 additions and 885 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,5 @@
 .DS_Store
 server/.env
-server/.env.production
 .env
 Caddyfile
 server/exportdanswer
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,36 +1,5 @@
 # Changelog

-## [0.32.2](https://github.com/Monadical-SAS/reflector/compare/v0.32.1...v0.32.2) (2026-02-03)
-
-
-### Bug Fixes
-
-* increase TIMEOUT_MEDIUM from 2m to 5m for LLM tasks ([#843](https://github.com/Monadical-SAS/reflector/issues/843)) ([4acde4b](https://github.com/Monadical-SAS/reflector/commit/4acde4b7fdef88cc02ca12cf38c9020b05ed96ac))
-* make caddy optional ([#841](https://github.com/Monadical-SAS/reflector/issues/841)) ([a2ed7d6](https://github.com/Monadical-SAS/reflector/commit/a2ed7d60d557b551a5b64e4dfd909b63a791d9fc))
-* use Daily API recording.duration as master source for transcript duration ([#844](https://github.com/Monadical-SAS/reflector/issues/844)) ([8707c66](https://github.com/Monadical-SAS/reflector/commit/8707c6694a80c939b6214bbc13331741f192e082))
-
-## [0.32.1](https://github.com/Monadical-SAS/reflector/compare/v0.32.0...v0.32.1) (2026-01-30)
-
-
-### Bug Fixes
-
-* daily multitrack pipeline finalze dependency fix ([23eb137](https://github.com/Monadical-SAS/reflector/commit/23eb1371cb9348c4b81eb12ad506b582f8a4799e))
-* match httpx pad with hatchet audio timeout ([c05d1f0](https://github.com/Monadical-SAS/reflector/commit/c05d1f03cd8369fc06efd455527e50246887efd0))
-
-## [0.32.0](https://github.com/Monadical-SAS/reflector/compare/v0.31.0...v0.32.0) (2026-01-30)
-
-
-### Features
-
-* modal padding ([#837](https://github.com/Monadical-SAS/reflector/issues/837)) ([7fde64e](https://github.com/Monadical-SAS/reflector/commit/7fde64e2529a1d37b0f7507c62d983a7bd0b5b89))
-
-## [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)


--- a/Caddyfile.example
+++ b/Caddyfile.example
@@ -1,8 +1,6 @@
-# Reflector Caddyfile (optional reverse proxy)
-# Use this only when you run Caddy via: docker compose -f docker-compose.prod.yml --profile caddy up -d
-# If Coolify, Traefik, or nginx already use ports 80/443, do NOT start Caddy; point your proxy at web:3000 and server:1250.
-#
-# Replace example.com with your actual domains. CORS is handled by the backend - Caddy just proxies.
+# Reflector Caddyfile
+# Replace example.com with your actual domains
+# CORS is handled by the backend - Caddy just proxies
 #
 # For environment variable substitution, set:
 #   FRONTEND_DOMAIN=app.example.com
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -1,14 +1,9 @@
 # Production Docker Compose configuration
 # Usage: docker compose -f docker-compose.prod.yml up -d
 #
-# Caddy (reverse proxy on ports 80/443) is OPTIONAL and behind the "caddy" profile:
-# - With Caddy (self-hosted, you manage SSL): docker compose -f docker-compose.prod.yml --profile caddy up -d
-# - Without Caddy (Coolify/Traefik/nginx already on 80/443): docker compose -f docker-compose.prod.yml up -d
-#   Then point your proxy at web:3000 (frontend) and server:1250 (API).
-#
 # Prerequisites:
 # 1. Copy .env.example to .env and configure for both server/ and www/
-# 2. If using Caddy: copy Caddyfile.example to Caddyfile and edit your domains
+# 2. Copy Caddyfile.example to Caddyfile and edit with your domains
 # 3. Deploy Modal GPU functions (see gpu/modal_deployments/deploy-all.sh)

 services:
@@ -89,8 +84,6 @@ services:
      retries: 3

  caddy:
-    profiles:
-      - caddy
    image: caddy:2-alpine
    restart: unless-stopped
    ports:
--- a/docs/docs/installation/docker-setup.md
+++ b/docs/docs/installation/docker-setup.md
@@ -11,15 +11,15 @@ This page documents the Docker Compose configuration for Reflector. For the comp

 The `docker-compose.prod.yml` includes these services:

-| Service    | Image                             | Purpose                                                                     |
-| ---------- | --------------------------------- | --------------------------------------------------------------------------- |
-| `web`      | `monadicalsas/reflector-frontend` | Next.js frontend                                                            |
-| `server`   | `monadicalsas/reflector-backend`  | FastAPI backend                                                             |
-| `worker`   | `monadicalsas/reflector-backend`  | Celery worker for background tasks                                          |
-| `beat`     | `monadicalsas/reflector-backend`  | Celery beat scheduler                                                       |
-| `redis`    | `redis:7.2-alpine`                | Message broker and cache                                                    |
-| `postgres` | `postgres:17-alpine`              | Primary database                                                            |
-| `caddy`    | `caddy:2-alpine`                  | Reverse proxy with auto-SSL (optional; see [Caddy profile](#caddy-profile)) |
+| Service | Image | Purpose |
+|---------|-------|---------|
+| `web` | `monadicalsas/reflector-frontend` | Next.js frontend |
+| `server` | `monadicalsas/reflector-backend` | FastAPI backend |
+| `worker` | `monadicalsas/reflector-backend` | Celery worker for background tasks |
+| `beat` | `monadicalsas/reflector-backend` | Celery beat scheduler |
+| `redis` | `redis:7.2-alpine` | Message broker and cache |
+| `postgres` | `postgres:17-alpine` | Primary database |
+| `caddy` | `caddy:2-alpine` | Reverse proxy with auto-SSL |

 ## Environment Files

@@ -30,7 +30,6 @@ Reflector uses two separate environment files:
 Used by: `server`, `worker`, `beat`

 Key variables:
-
 ```env
 # Database connection
 DATABASE_URL=postgresql+asyncpg://reflector:reflector@postgres:5432/reflector
@@ -55,7 +54,6 @@ TRANSCRIPT_MODAL_API_KEY=...
 Used by: `web`

 Key variables:
-
 ```env
 # Domain configuration
 SITE_URL=https://app.example.com
@@ -72,42 +70,26 @@ Note: `API_URL` is used client-side (browser), `SERVER_API_URL` is used server-s

 ## Volumes

-| Volume          | Purpose                       |
-| --------------- | ----------------------------- |
-| `redis_data`    | Redis persistence             |
-| `postgres_data` | PostgreSQL data               |
-| `server_data`   | Uploaded files, local storage |
-| `caddy_data`    | SSL certificates              |
-| `caddy_config`  | Caddy configuration           |
+| Volume | Purpose |
+|--------|---------|
+| `redis_data` | Redis persistence |
+| `postgres_data` | PostgreSQL data |
+| `server_data` | Uploaded files, local storage |
+| `caddy_data` | SSL certificates |
+| `caddy_config` | Caddy configuration |

 ## Network

 All services share the default network. The network is marked `attachable: true` to allow external containers (like Authentik) to join.

-## Caddy profile
-
-Caddy (ports 80 and 443) is **optional** and behind the `caddy` profile so it does not conflict with an existing reverse proxy (e.g. Coolify, Traefik, nginx).
-
- **With Caddy** (you want Reflector to handle SSL):
-  `docker compose -f docker-compose.prod.yml --profile caddy up -d`
- **Without Caddy** (Coolify or another proxy already on 80/443):
-  `docker compose -f docker-compose.prod.yml up -d`
-  Then configure your proxy to send traffic to `web:3000` (frontend) and `server:1250` (API).
-
 ## Common Commands

 ### Start all services
-
 ```bash
-# Without Caddy (e.g. when using Coolify)
 docker compose -f docker-compose.prod.yml up -d
-
-# With Caddy as reverse proxy
-docker compose -f docker-compose.prod.yml --profile caddy up -d
 ```

 ### View logs
-
 ```bash
 # All services
 docker compose -f docker-compose.prod.yml logs -f
@@ -117,7 +99,6 @@ docker compose -f docker-compose.prod.yml logs server --tail 50
 ```

 ### Restart a service
-
 ```bash
 # Quick restart (doesn't reload .env changes)
 docker compose -f docker-compose.prod.yml restart server
@@ -127,32 +108,27 @@ docker compose -f docker-compose.prod.yml up -d server
 ```

 ### Run database migrations
-
 ```bash
 docker compose -f docker-compose.prod.yml exec server uv run alembic upgrade head
 ```

 ### Access database
-
 ```bash
 docker compose -f docker-compose.prod.yml exec postgres psql -U reflector
 ```

 ### Pull latest images
-
 ```bash
 docker compose -f docker-compose.prod.yml pull
 docker compose -f docker-compose.prod.yml up -d
 ```

 ### Stop all services
-
 ```bash
 docker compose -f docker-compose.prod.yml down
 ```

 ### Full reset (WARNING: deletes data)
-
 ```bash
 docker compose -f docker-compose.prod.yml down -v
 ```
@@ -211,7 +187,6 @@ The Caddyfile supports environment variable substitution:
 Set `FRONTEND_DOMAIN` and `API_DOMAIN` environment variables, or edit the file directly.

 ### Reload Caddy after changes
-
 ```bash
 docker compose -f docker-compose.prod.yml exec caddy caddy reload --config /etc/caddy/Caddyfile
 ```
--- a/docs/docs/installation/overview.md
+++ b/docs/docs/installation/overview.md
@@ -26,7 +26,7 @@ flowchart LR

 Before starting, you need:

- **Production server** - 4+ cores, 8GB+ RAM, public IP
+- **Production server** -  4+ cores, 8GB+ RAM, public IP
 - **Two domain names** - e.g., `app.example.com` (frontend) and `api.example.com` (backend)
 - **GPU processing** - Choose one:
  - Modal.com account, OR
@@ -60,17 +60,16 @@ Type: A    Name: api    Value: <your-server-ip>

 Reflector requires GPU processing for transcription and speaker diarization. Choose one option:

-|              | **Modal.com (Cloud)**             | **Self-Hosted GPU**          |
-| ------------ | --------------------------------- | ---------------------------- |
+| | **Modal.com (Cloud)** | **Self-Hosted GPU** |
+|---|---|---|
 | **Best for** | No GPU hardware, zero maintenance | Own GPU server, full control |
-| **Pricing**  | Pay-per-use                       | Fixed infrastructure cost    |
+| **Pricing** | Pay-per-use | Fixed infrastructure cost |

 ### Option A: Modal.com (Serverless Cloud GPU)

 #### Accept HuggingFace Licenses

 Visit both pages and click "Accept":
-
 - https://huggingface.co/pyannote/speaker-diarization-3.1
 - https://huggingface.co/pyannote/segmentation-3.0

@@ -180,7 +179,6 @@ Save these credentials - you'll need them in the next step.
 ## Configure Environment

 Reflector has two env files:
-
 - `server/.env` - Backend configuration
 - `www/.env` - Frontend configuration

@@ -192,7 +190,6 @@ nano server/.env
 ```

 **Required settings:**
-
 ```env
 # Database (defaults work with docker-compose.prod.yml)
 DATABASE_URL=postgresql+asyncpg://reflector:reflector@postgres:5432/reflector
@@ -252,7 +249,6 @@ nano www/.env
 ```

 **Required settings:**
-
 ```env
 # Your domains
 SITE_URL=https://app.example.com
@@ -270,11 +266,7 @@ FEATURE_REQUIRE_LOGIN=false

 ---

-## Reverse proxy (Caddy or existing)
-
-**If Coolify, Traefik, or nginx already use ports 80/443** (e.g. Coolify on your host): skip Caddy. Start the stack without the Caddy profile (see [Start Services](#start-services) below), then point your proxy at `web:3000` (frontend) and `server:1250` (API).
-
-**If you want Reflector to provide the reverse proxy and SSL:**
+## Configure Caddy

 ```bash
 cp Caddyfile.example Caddyfile
@@ -297,18 +289,10 @@ Replace `example.com` with your domains. The `{$VAR:default}` syntax uses Caddy'

 ## Start Services

-**Without Caddy** (e.g. Coolify already on 80/443):
-
 ```bash
 docker compose -f docker-compose.prod.yml up -d
 ```

-**With Caddy** (Reflector handles SSL):
-
-```bash
-docker compose -f docker-compose.prod.yml --profile caddy up -d
-```
-
 Wait for containers to start (first run may take 1-2 minutes to pull images and initialize).

 ---
@@ -316,21 +300,18 @@ Wait for containers to start (first run may take 1-2 minutes to pull images and
 ## Verify Deployment

 ### Check services
-
 ```bash
 docker compose -f docker-compose.prod.yml ps
 # All should show "Up"
 ```

 ### Test API
-
 ```bash
 curl https://api.example.com/health
 # Should return: {"status":"healthy"}
 ```

 ### Test Frontend
-
 - Visit https://app.example.com
 - You should see the Reflector interface
 - Try uploading an audio file to test transcription
@@ -346,7 +327,6 @@ By default, Reflector is open (no login required). **Authentication is required
 See [Authentication Setup](./auth-setup) for full Authentik OAuth configuration.

 Quick summary:
-
 1. Deploy Authentik on your server
 2. Create OAuth provider in Authentik
 3. Extract public key for JWT verification
@@ -378,7 +358,6 @@ DAILYCO_STORAGE_AWS_ROLE_ARN=<arn:aws:iam::ACCOUNT:role/DailyCo>
 ```

 Reload env and restart:
-
 ```bash
 docker compose -f docker-compose.prod.yml up -d server worker
 ```
@@ -388,43 +367,35 @@ docker compose -f docker-compose.prod.yml up -d server worker
 ## Troubleshooting

 ### Check logs for errors
-
 ```bash
 docker compose -f docker-compose.prod.yml logs server --tail 20
 docker compose -f docker-compose.prod.yml logs worker --tail 20
 ```

 ### Services won't start
-
 ```bash
 docker compose -f docker-compose.prod.yml logs
 ```

 ### CORS errors in browser
-
 - Verify `CORS_ORIGIN` in `server/.env` matches your frontend domain exactly (including `https://`)
 - Reload env: `docker compose -f docker-compose.prod.yml up -d server`

-### SSL certificate errors (when using Caddy)
-
+### SSL certificate errors
 - Caddy auto-provisions Let's Encrypt certificates
- Ensure ports 80 and 443 are open and not used by another proxy
+- Ensure ports 80 and 443 are open
 - Check: `docker compose -f docker-compose.prod.yml logs caddy`
- If port 80 is already in use (e.g. by Coolify), run without Caddy: `docker compose -f docker-compose.prod.yml up -d` and use your existing proxy

 ### Transcription not working
-
 - Check Modal dashboard: https://modal.com/apps
 - Verify URLs in `server/.env` match deployed functions
 - Check worker logs: `docker compose -f docker-compose.prod.yml logs worker`

 ### "Login required" but auth not configured
-
 - Set `FEATURE_REQUIRE_LOGIN=false` in `www/.env`
 - Rebuild frontend: `docker compose -f docker-compose.prod.yml up -d --force-recreate web`

 ### Database migrations or connectivity issues
-
 Migrations run automatically on server startup. To check database connectivity or debug migration failures:

 ```bash
@@ -437,3 +408,4 @@ docker compose -f docker-compose.prod.yml exec server uv run python -c "from ref
 # Manually run migrations (if needed)
 docker compose -f docker-compose.prod.yml exec server uv run alembic upgrade head
 ```
+
--- a/gpu/modal_deployments/deploy-all.sh
+++ b/gpu/modal_deployments/deploy-all.sh
@@ -131,15 +131,6 @@ if [ -z "$DIARIZER_URL" ]; then
 fi
 echo "  -> $DIARIZER_URL"

-echo ""
-echo "Deploying padding (CPU audio processing via Modal SDK)..."
-modal deploy reflector_padding.py
-if [ $? -ne 0 ]; then
-    echo "Error: Failed to deploy padding. Check Modal dashboard for details."
-    exit 1
-fi
-echo "  -> reflector-padding.pad_track (Modal SDK function)"
-
 # --- Output Configuration ---
 echo ""
 echo "=========================================="
@@ -156,6 +147,4 @@ echo ""
 echo "DIARIZATION_BACKEND=modal"
 echo "DIARIZATION_URL=$DIARIZER_URL"
 echo "DIARIZATION_MODAL_API_KEY=$API_KEY"
-echo ""
-echo "# Padding uses Modal SDK (requires MODAL_TOKEN_ID/SECRET in worker containers)"
 echo "# --- End Modal Configuration ---"
--- a/gpu/modal_deployments/reflector_padding.py
+++ b/gpu/modal_deployments/reflector_padding.py
@@ -1,277 +0,0 @@
-"""
-Reflector GPU backend - audio padding
-======================================
-
-CPU-intensive audio padding service for adding silence to audio tracks.
-Uses PyAV filter graph (adelay) for precise track synchronization.
-
-IMPORTANT: This padding logic is duplicated from server/reflector/utils/audio_padding.py
-for Modal deployment isolation (Modal can't import from server/reflector/). If you modify
-the PyAV filter graph or padding algorithm, you MUST update both:
-  - gpu/modal_deployments/reflector_padding.py (this file)
-  - server/reflector/utils/audio_padding.py
-
-Constants duplicated from server/reflector/utils/audio_constants.py for same reason.
-"""
-
-import os
-import tempfile
-from fractions import Fraction
-import math
-import asyncio
-
-import modal
-
-S3_TIMEOUT = 60 # happens 2 times
-PADDING_TIMEOUT = 600 + (S3_TIMEOUT * 2)
-SCALEDOWN_WINDOW = 60  # The maximum duration (in seconds) that individual containers can remain idle when scaling down.
-DISCONNECT_CHECK_INTERVAL = 2  # Check for client disconnect
-
-
-app = modal.App("reflector-padding")
-
-# CPU-based image
-image = (
-    modal.Image.debian_slim(python_version="3.12")
-    .apt_install("ffmpeg")  # Required by PyAV
-    .pip_install(
-        "av==13.1.0",  # PyAV for audio processing
-        "requests==2.32.3",  # HTTP for presigned URL downloads/uploads
-        "fastapi==0.115.12",  # API framework
-    )
-)
-
-# ref B0F71CE8-FC59-4AA5-8414-DAFB836DB711
-OPUS_STANDARD_SAMPLE_RATE = 48000
-# ref B0F71CE8-FC59-4AA5-8414-DAFB836DB711
-OPUS_DEFAULT_BIT_RATE = 128000
-
-
-@app.function(
-    cpu=2.0,
-    timeout=PADDING_TIMEOUT,
-    scaledown_window=SCALEDOWN_WINDOW,
-    image=image,
-)
-@modal.asgi_app()
-def web():
-    from fastapi import FastAPI, Request, HTTPException
-    from pydantic import BaseModel
-
-    class PaddingRequest(BaseModel):
-        track_url: str
-        output_url: str
-        start_time_seconds: float
-        track_index: int
-
-    class PaddingResponse(BaseModel):
-        size: int
-        cancelled: bool = False
-
-    web_app = FastAPI()
-
-    @web_app.post("/pad")
-    async def pad_track_endpoint(request: Request, req: PaddingRequest) -> PaddingResponse:
-        """Modal web endpoint for padding audio tracks with disconnect detection.
-        """
-        import logging
-
-        logging.basicConfig(level=logging.INFO, format="%(asctime)s - %(levelname)s - %(message)s")
-        logger = logging.getLogger(__name__)
-
-        if not req.track_url:
-            raise HTTPException(status_code=400, detail="track_url cannot be empty")
-        if not req.output_url:
-            raise HTTPException(status_code=400, detail="output_url cannot be empty")
-        if req.start_time_seconds <= 0:
-            raise HTTPException(status_code=400, detail=f"start_time_seconds must be positive, got {req.start_time_seconds}")
-        if req.start_time_seconds > 18000:
-            raise HTTPException(status_code=400, detail=f"start_time_seconds exceeds maximum 18000s (5 hours)")
-
-        logger.info(f"Padding request: track {req.track_index}, delay={req.start_time_seconds}s")
-
-        # Thread-safe cancellation flag shared between async disconnect checker and blocking thread
-        import threading
-        cancelled = threading.Event()
-
-        async def check_disconnect():
-            """Background task to check for client disconnect every 2 seconds."""
-            while not cancelled.is_set():
-                await asyncio.sleep(DISCONNECT_CHECK_INTERVAL)
-                if await request.is_disconnected():
-                    logger.warning("Client disconnected, setting cancellation flag")
-                    cancelled.set()
-                    break
-
-        # Start disconnect checker in background
-        disconnect_task = asyncio.create_task(check_disconnect())
-
-        try:
-            result = await asyncio.get_event_loop().run_in_executor(
-                None, _pad_track_blocking, req, cancelled, logger
-            )
-            return PaddingResponse(**result)
-        finally:
-            cancelled.set()
-            disconnect_task.cancel()
-            try:
-                await disconnect_task
-            except asyncio.CancelledError:
-                pass
-
-    def _pad_track_blocking(req, cancelled, logger) -> dict:
-        """Blocking CPU-bound padding work with periodic cancellation checks.
-
-        Args:
-            cancelled: threading.Event for thread-safe cancellation signaling
-        """
-        import av
-        import requests
-        from av.audio.resampler import AudioResampler
-        import time
-
-        temp_dir = tempfile.mkdtemp()
-        input_path = None
-        output_path = None
-        last_check = time.time()
-
-        try:
-            logger.info("Downloading track for padding")
-            response = requests.get(req.track_url, stream=True, timeout=S3_TIMEOUT)
-            response.raise_for_status()
-
-            input_path = os.path.join(temp_dir, "track.webm")
-            total_bytes = 0
-            chunk_count = 0
-            with open(input_path, "wb") as f:
-                for chunk in response.iter_content(chunk_size=8192):
-                    if chunk:
-                        f.write(chunk)
-                        total_bytes += len(chunk)
-                        chunk_count += 1
-
-                        # Check for cancellation every arbitrary amount of chunks
-                        if chunk_count % 12 == 0:
-                            now = time.time()
-                            if now - last_check >= DISCONNECT_CHECK_INTERVAL:
-                                if cancelled.is_set():
-                                    logger.info("Cancelled during download, exiting early")
-                                    return {"size": 0, "cancelled": True}
-                                last_check = now
-            logger.info(f"Track downloaded: {total_bytes} bytes")
-
-            if cancelled.is_set():
-                logger.info("Cancelled after download, exiting early")
-                return {"size": 0, "cancelled": True}
-
-            # Apply padding using PyAV
-            output_path = os.path.join(temp_dir, "padded.webm")
-            delay_ms = math.floor(req.start_time_seconds * 1000)
-            logger.info(f"Padding track {req.track_index} with {delay_ms}ms delay using PyAV")
-
-            in_container = av.open(input_path)
-            in_stream = next((s for s in in_container.streams if s.type == "audio"), None)
-            if in_stream is None:
-                raise ValueError("No audio stream in input")
-
-            with av.open(output_path, "w", format="webm") as out_container:
-                out_stream = out_container.add_stream("libopus", rate=OPUS_STANDARD_SAMPLE_RATE)
-                out_stream.bit_rate = OPUS_DEFAULT_BIT_RATE
-                graph = av.filter.Graph()
-
-                abuf_args = (
-                    f"time_base=1/{OPUS_STANDARD_SAMPLE_RATE}:"
-                    f"sample_rate={OPUS_STANDARD_SAMPLE_RATE}:"
-                    f"sample_fmt=s16:"
-                    f"channel_layout=stereo"
-                )
-                src = graph.add("abuffer", args=abuf_args, name="src")
-                aresample_f = graph.add("aresample", args="async=1", name="ares")
-                delays_arg = f"{delay_ms}|{delay_ms}"
-                adelay_f = graph.add("adelay", args=f"delays={delays_arg}:all=1", name="delay")
-                sink = graph.add("abuffersink", name="sink")
-
-                src.link_to(aresample_f)
-                aresample_f.link_to(adelay_f)
-                adelay_f.link_to(sink)
-                graph.configure()
-
-                resampler = AudioResampler(
-                    format="s16", layout="stereo", rate=OPUS_STANDARD_SAMPLE_RATE
-                )
-
-                for frame in in_container.decode(in_stream):
-                    # Check for cancellation periodically
-                    now = time.time()
-                    if now - last_check >= DISCONNECT_CHECK_INTERVAL:
-                        if cancelled.is_set():
-                            logger.info("Cancelled during processing, exiting early")
-                            in_container.close()
-                            return {"size": 0, "cancelled": True}
-                        last_check = now
-
-                    out_frames = resampler.resample(frame) or []
-                    for rframe in out_frames:
-                        rframe.sample_rate = OPUS_STANDARD_SAMPLE_RATE
-                        rframe.time_base = Fraction(1, OPUS_STANDARD_SAMPLE_RATE)
-                        src.push(rframe)
-
-                        while True:
-                            try:
-                                f_out = sink.pull()
-                            except Exception:
-                                break
-                            f_out.sample_rate = OPUS_STANDARD_SAMPLE_RATE
-                            f_out.time_base = Fraction(1, OPUS_STANDARD_SAMPLE_RATE)
-                            for packet in out_stream.encode(f_out):
-                                out_container.mux(packet)
-
-                # Flush filter graph
-                src.push(None)
-                while True:
-                    try:
-                        f_out = sink.pull()
-                    except Exception:
-                        break
-                    f_out.sample_rate = OPUS_STANDARD_SAMPLE_RATE
-                    f_out.time_base = Fraction(1, OPUS_STANDARD_SAMPLE_RATE)
-                    for packet in out_stream.encode(f_out):
-                        out_container.mux(packet)
-
-                # Flush encoder
-                for packet in out_stream.encode(None):
-                    out_container.mux(packet)
-
-            in_container.close()
-
-            file_size = os.path.getsize(output_path)
-            logger.info(f"Padding complete: {file_size} bytes")
-
-            logger.info("Uploading padded track to S3")
-
-            with open(output_path, "rb") as f:
-                upload_response = requests.put(req.output_url, data=f, timeout=S3_TIMEOUT)
-
-            upload_response.raise_for_status()
-            logger.info(f"Upload complete: {file_size} bytes")
-
-            return {"size": file_size}
-
-        finally:
-            if input_path and os.path.exists(input_path):
-                try:
-                    os.unlink(input_path)
-                except Exception as e:
-                    logger.warning(f"Failed to cleanup input file: {e}")
-            if output_path and os.path.exists(output_path):
-                try:
-                    os.unlink(output_path)
-                except Exception as e:
-                    logger.warning(f"Failed to cleanup output file: {e}")
-            try:
-                os.rmdir(temp_dir)
-            except Exception as e:
-                logger.warning(f"Failed to cleanup temp directory: {e}")
-
-    return web_app
-
--- a/server/pyproject.toml
+++ b/server/pyproject.toml
@@ -8,7 +8,7 @@ readme = "README.md"
 dependencies = [
    "aiohttp>=3.9.0",
    "aiohttp-cors>=0.7.0",
-    "av>=15.0.0",
+    "av>=10.0.0",
    "requests>=2.31.0",
    "aiortc>=1.5.0",
    "sortedcontainers>=2.4.0",
--- a/server/reflector/hatchet/constants.py
+++ b/server/reflector/hatchet/constants.py
@@ -35,9 +35,7 @@ LLM_RATE_LIMIT_PER_SECOND = 10

 # Task execution timeouts (seconds)
 TIMEOUT_SHORT = 60  # Quick operations: API calls, DB updates
-TIMEOUT_MEDIUM = (
-    300  # Single LLM calls, waveform generation (5m for slow LLM responses)
-)
+TIMEOUT_MEDIUM = 120  # Single LLM calls, waveform generation
 TIMEOUT_LONG = 180  # Action items (larger context LLM)
-TIMEOUT_AUDIO = 720  # Audio processing: padding, mixdown
+TIMEOUT_AUDIO = 300  # Audio processing: padding, mixdown
 TIMEOUT_HEAVY = 600  # Transcription, fan-out LLM tasks
--- a/server/reflector/hatchet/workflows/daily_multitrack_pipeline.py
+++ b/server/reflector/hatchet/workflows/daily_multitrack_pipeline.py
@@ -322,7 +322,6 @@ async def get_participants(input: PipelineInput, ctx: Context) -> ParticipantsRe
    mtg_session_id = recording.mtg_session_id
    async with fresh_db_connection():
        from reflector.db.transcripts import (  # noqa: PLC0415
-            TranscriptDuration,
            TranscriptParticipant,
            transcripts_controller,
        )
@@ -331,26 +330,15 @@ async def get_participants(input: PipelineInput, ctx: Context) -> ParticipantsRe
        if not transcript:
            raise ValueError(f"Transcript {input.transcript_id} not found")
        # Note: title NOT cleared - preserves existing titles
-        # Duration from Daily API (seconds -> milliseconds) - master source
-        duration_ms = recording.duration * 1000 if recording.duration else 0
        await transcripts_controller.update(
            transcript,
            {
                "events": [],
                "topics": [],
                "participants": [],
-                "duration": duration_ms,
            },
        )

-        await append_event_and_broadcast(
-            input.transcript_id,
-            transcript,
-            "DURATION",
-            TranscriptDuration(duration=duration_ms),
-            logger=logger,
-        )
-
        mtg_session_id = assert_non_none_and_non_empty(
            mtg_session_id, "mtg_session_id is required"
        )
@@ -1107,7 +1095,7 @@ async def identify_action_items(


@daily_multitrack_pipeline.task(
-    parents=[process_tracks, 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,
 )
@@ -1120,8 +1108,12 @@ async def finalize(input: PipelineInput, ctx: Context) -> FinalizeResult:
    """
    ctx.log("finalize: saving transcript and setting status to 'ended'")

+    mixdown_result = ctx.task_output(mixdown_tracks)
    track_result = ctx.task_output(process_tracks)

+    duration = mixdown_result.duration
+    all_words = track_result.all_words
+
    # Cleanup temporary padded S3 files (deferred until finalize for semantic parity with Celery)
    created_padded_files = track_result.created_padded_files
    if created_padded_files:
@@ -1141,6 +1133,7 @@ async def finalize(input: PipelineInput, ctx: Context) -> FinalizeResult:

    async with fresh_db_connection():
        from reflector.db.transcripts import (  # noqa: PLC0415
+            TranscriptDuration,
            TranscriptText,
            transcripts_controller,
        )
@@ -1149,6 +1142,8 @@ async def finalize(input: PipelineInput, ctx: Context) -> FinalizeResult:
        if transcript is None:
            raise ValueError(f"Transcript {input.transcript_id} not found in database")

+        merged_transcript = TranscriptType(words=all_words, translation=None)
+
        await append_event_and_broadcast(
            input.transcript_id,
            transcript,
@@ -1160,15 +1155,21 @@ async def finalize(input: PipelineInput, ctx: Context) -> FinalizeResult:
            logger=logger,
        )

-        # Clear workflow_run_id (workflow completed successfully)
-        # Note: title/long_summary/short_summary/duration already saved by their callbacks
+        # Save duration and clear workflow_run_id (workflow completed successfully)
+        # Note: title/long_summary/short_summary already saved by their callbacks
        await transcripts_controller.update(
            transcript,
            {
+                "duration": duration,
                "workflow_run_id": None,  # Clear on success - no need to resume
            },
        )

+        duration_data = TranscriptDuration(duration=duration)
+        await append_event_and_broadcast(
+            input.transcript_id, transcript, "DURATION", duration_data, logger=logger
+        )
+
        await set_status_and_broadcast(input.transcript_id, "ended", logger=logger)

        ctx.log(
--- a/server/reflector/hatchet/workflows/padding_workflow.py
+++ b/server/reflector/hatchet/workflows/padding_workflow.py
@@ -1,165 +0,0 @@
-"""
-Hatchet child workflow: PaddingWorkflow
-Handles individual audio track padding via Modal.com backend.
-"""
-
-from datetime import timedelta
-
-import av
-from hatchet_sdk import Context
-from pydantic import BaseModel
-
-from reflector.hatchet.client import HatchetClientManager
-from reflector.hatchet.constants import TIMEOUT_AUDIO
-from reflector.hatchet.workflows.models import PadTrackResult
-from reflector.logger import logger
-from reflector.utils.audio_constants import PRESIGNED_URL_EXPIRATION_SECONDS
-from reflector.utils.audio_padding import extract_stream_start_time_from_container
-
-
-class PaddingInput(BaseModel):
-    """Input for individual track padding."""
-
-    track_index: int
-    s3_key: str
-    bucket_name: str
-    transcript_id: str
-
-
-hatchet = HatchetClientManager.get_client()
-
-padding_workflow = hatchet.workflow(
-    name="PaddingWorkflow", input_validator=PaddingInput
-)
-
-
-@padding_workflow.task(execution_timeout=timedelta(seconds=TIMEOUT_AUDIO), retries=3)
-async def pad_track(input: PaddingInput, ctx: Context) -> PadTrackResult:
-    """Pad audio track with silence based on WebM container start_time."""
-    ctx.log(f"pad_track: track {input.track_index}, s3_key={input.s3_key}")
-    logger.info(
-        "[Hatchet] pad_track",
-        track_index=input.track_index,
-        s3_key=input.s3_key,
-        transcript_id=input.transcript_id,
-    )
-
-    try:
-        # Create fresh storage instance to avoid aioboto3 fork issues
-        from reflector.settings import settings  # noqa: PLC0415
-        from reflector.storage.storage_aws import AwsStorage  # noqa: PLC0415
-
-        storage = AwsStorage(
-            aws_bucket_name=settings.TRANSCRIPT_STORAGE_AWS_BUCKET_NAME,
-            aws_region=settings.TRANSCRIPT_STORAGE_AWS_REGION,
-            aws_access_key_id=settings.TRANSCRIPT_STORAGE_AWS_ACCESS_KEY_ID,
-            aws_secret_access_key=settings.TRANSCRIPT_STORAGE_AWS_SECRET_ACCESS_KEY,
-        )
-
-        source_url = await storage.get_file_url(
-            input.s3_key,
-            operation="get_object",
-            expires_in=PRESIGNED_URL_EXPIRATION_SECONDS,
-            bucket=input.bucket_name,
-        )
-
-        # Extract start_time to determine if padding needed
-        with av.open(source_url) as in_container:
-            if in_container.duration:
-                try:
-                    duration = timedelta(seconds=in_container.duration // 1_000_000)
-                    ctx.log(
-                        f"pad_track: track {input.track_index}, duration={duration}"
-                    )
-                except (ValueError, TypeError, OverflowError) as e:
-                    ctx.log(
-                        f"pad_track: track {input.track_index}, duration error: {str(e)}"
-                    )
-
-            start_time_seconds = extract_stream_start_time_from_container(
-                in_container, input.track_index, logger=logger
-            )
-
-        if start_time_seconds <= 0:
-            logger.info(
-                f"Track {input.track_index} requires no padding",
-                track_index=input.track_index,
-            )
-            return PadTrackResult(
-                padded_key=input.s3_key,
-                bucket_name=input.bucket_name,
-                size=0,
-                track_index=input.track_index,
-            )
-
-        storage_path = f"file_pipeline_hatchet/{input.transcript_id}/tracks/padded_{input.track_index}.webm"
-
-        # Presign PUT URL for output (Modal will upload directly)
-        output_url = await storage.get_file_url(
-            storage_path,
-            operation="put_object",
-            expires_in=PRESIGNED_URL_EXPIRATION_SECONDS,
-        )
-
-        import httpx  # noqa: PLC0415
-
-        from reflector.processors.audio_padding_modal import (  # noqa: PLC0415
-            AudioPaddingModalProcessor,
-        )
-
-        try:
-            processor = AudioPaddingModalProcessor()
-            result = await processor.pad_track(
-                track_url=source_url,
-                output_url=output_url,
-                start_time_seconds=start_time_seconds,
-                track_index=input.track_index,
-            )
-            file_size = result.size
-
-            ctx.log(f"pad_track: Modal returned size={file_size}")
-        except httpx.HTTPStatusError as e:
-            error_detail = e.response.text if hasattr(e.response, "text") else str(e)
-            logger.error(
-                "[Hatchet] Modal padding HTTP error",
-                transcript_id=input.transcript_id,
-                track_index=input.track_index,
-                status_code=e.response.status_code if hasattr(e, "response") else None,
-                error=error_detail,
-                exc_info=True,
-            )
-            raise Exception(
-                f"Modal padding failed: HTTP {e.response.status_code}"
-            ) from e
-        except httpx.TimeoutException as e:
-            logger.error(
-                "[Hatchet] Modal padding timeout",
-                transcript_id=input.transcript_id,
-                track_index=input.track_index,
-                error=str(e),
-                exc_info=True,
-            )
-            raise Exception("Modal padding timeout") from e
-
-        logger.info(
-            "[Hatchet] pad_track complete",
-            track_index=input.track_index,
-            padded_key=storage_path,
-        )
-
-        return PadTrackResult(
-            padded_key=storage_path,
-            bucket_name=None,  # None = use default transcript storage bucket
-            size=file_size,
-            track_index=input.track_index,
-        )
-
-    except Exception as e:
-        logger.error(
-            "[Hatchet] pad_track failed",
-            transcript_id=input.transcript_id,
-            track_index=input.track_index,
-            error=str(e),
-            exc_info=True,
-        )
-        raise
--- a/server/reflector/hatchet/workflows/track_processing.py
+++ b/server/reflector/hatchet/workflows/track_processing.py
@@ -14,7 +14,9 @@ Hatchet workers run in forked processes; fresh imports per task ensure
 storage/DB connections are not shared across forks.
 """

+import tempfile
 from datetime import timedelta
+from pathlib import Path

 import av
 from hatchet_sdk import Context
@@ -25,7 +27,10 @@ from reflector.hatchet.constants import TIMEOUT_AUDIO, TIMEOUT_HEAVY
 from reflector.hatchet.workflows.models import PadTrackResult, TranscribeTrackResult
 from reflector.logger import logger
 from reflector.utils.audio_constants import PRESIGNED_URL_EXPIRATION_SECONDS
-from reflector.utils.audio_padding import extract_stream_start_time_from_container
+from reflector.utils.audio_padding import (
+    apply_audio_padding_to_file,
+    extract_stream_start_time_from_container,
+)


 class TrackInput(BaseModel):
@@ -78,44 +83,63 @@ async def pad_track(input: TrackInput, ctx: Context) -> PadTrackResult:
        )

        with av.open(source_url) as in_container:
+            if in_container.duration:
+                try:
+                    duration = timedelta(seconds=in_container.duration // 1_000_000)
+                    ctx.log(
+                        f"pad_track: track {input.track_index}, duration={duration}"
+                    )
+                except Exception:
+                    ctx.log(f"pad_track: track {input.track_index}, duration=ERROR")
+
            start_time_seconds = extract_stream_start_time_from_container(
                in_container, input.track_index, logger=logger
            )

-        # If no padding needed, return original S3 key
-        if start_time_seconds <= 0:
-            logger.info(
-                f"Track {input.track_index} requires no padding",
-                track_index=input.track_index,
-            )
-            return PadTrackResult(
-                padded_key=input.s3_key,
-                bucket_name=input.bucket_name,
-                size=0,
-                track_index=input.track_index,
-            )
+            # If no padding needed, return original S3 key
+            if start_time_seconds <= 0:
+                logger.info(
+                    f"Track {input.track_index} requires no padding",
+                    track_index=input.track_index,
+                )
+                return PadTrackResult(
+                    padded_key=input.s3_key,
+                    bucket_name=input.bucket_name,
+                    size=0,
+                    track_index=input.track_index,
+                )

-        storage_path = f"file_pipeline_hatchet/{input.transcript_id}/tracks/padded_{input.track_index}.webm"
+            with tempfile.NamedTemporaryFile(suffix=".webm", delete=False) as temp_file:
+                temp_path = temp_file.name

-        # Presign PUT URL for output (Modal uploads directly)
-        output_url = await storage.get_file_url(
-            storage_path,
-            operation="put_object",
-            expires_in=PRESIGNED_URL_EXPIRATION_SECONDS,
-        )
+            try:
+                apply_audio_padding_to_file(
+                    in_container,
+                    temp_path,
+                    start_time_seconds,
+                    input.track_index,
+                    logger=logger,
+                )

-        from reflector.processors.audio_padding_modal import (  # noqa: PLC0415
-            AudioPaddingModalProcessor,
-        )
+                file_size = Path(temp_path).stat().st_size
+                storage_path = f"file_pipeline_hatchet/{input.transcript_id}/tracks/padded_{input.track_index}.webm"

-        processor = AudioPaddingModalProcessor()
-        result = await processor.pad_track(
-            track_url=source_url,
-            output_url=output_url,
-            start_time_seconds=start_time_seconds,
-            track_index=input.track_index,
-        )
-        file_size = result.size
+                logger.info(
+                    f"About to upload padded track",
+                    key=storage_path,
+                    size=file_size,
+                )
+
+                with open(temp_path, "rb") as padded_file:
+                    await storage.put_file(storage_path, padded_file)
+
+                logger.info(
+                    f"Uploaded padded track to S3",
+                    key=storage_path,
+                    size=file_size,
+                )
+            finally:
+                Path(temp_path).unlink(missing_ok=True)

        ctx.log(f"pad_track complete: track {input.track_index} -> {storage_path}")
        logger.info(
--- a/server/reflector/processors/audio_padding_modal.py
+++ b/server/reflector/processors/audio_padding_modal.py
@@ -1,113 +0,0 @@
-"""
-Modal.com backend for audio padding.
-"""
-
-import asyncio
-import os
-
-import httpx
-from pydantic import BaseModel
-
-from reflector.hatchet.constants import TIMEOUT_AUDIO
-from reflector.logger import logger
-
-
-class PaddingResponse(BaseModel):
-    size: int
-    cancelled: bool = False
-
-
-class AudioPaddingModalProcessor:
-    """Audio padding processor using Modal.com CPU backend via HTTP."""
-
-    def __init__(
-        self, padding_url: str | None = None, modal_api_key: str | None = None
-    ):
-        self.padding_url = padding_url or os.getenv("PADDING_URL")
-        if not self.padding_url:
-            raise ValueError(
-                "PADDING_URL required to use AudioPaddingModalProcessor. "
-                "Set PADDING_URL environment variable or pass padding_url parameter."
-            )
-
-        self.modal_api_key = modal_api_key or os.getenv("MODAL_API_KEY")
-
-    async def pad_track(
-        self,
-        track_url: str,
-        output_url: str,
-        start_time_seconds: float,
-        track_index: int,
-    ) -> PaddingResponse:
-        """Pad audio track with silence via Modal backend.
-
-        Args:
-            track_url: Presigned GET URL for source audio track
-            output_url: Presigned PUT URL for output WebM
-            start_time_seconds: Amount of silence to prepend
-            track_index: Track index for logging
-        """
-        if not track_url:
-            raise ValueError("track_url cannot be empty")
-        if start_time_seconds <= 0:
-            raise ValueError(
-                f"start_time_seconds must be positive, got {start_time_seconds}"
-            )
-
-        log = logger.bind(track_index=track_index, padding_seconds=start_time_seconds)
-        log.info("Sending Modal padding HTTP request")
-
-        url = f"{self.padding_url}/pad"
-
-        headers = {}
-        if self.modal_api_key:
-            headers["Authorization"] = f"Bearer {self.modal_api_key}"
-
-        try:
-            async with httpx.AsyncClient(timeout=TIMEOUT_AUDIO) as client:
-                response = await client.post(
-                    url,
-                    headers=headers,
-                    json={
-                        "track_url": track_url,
-                        "output_url": output_url,
-                        "start_time_seconds": start_time_seconds,
-                        "track_index": track_index,
-                    },
-                    follow_redirects=True,
-                )
-
-                if response.status_code != 200:
-                    error_body = response.text
-                    log.error(
-                        "Modal padding API error",
-                        status_code=response.status_code,
-                        error_body=error_body,
-                    )
-
-                response.raise_for_status()
-                result = response.json()
-
-            # Check if work was cancelled
-            if result.get("cancelled"):
-                log.warning("Modal padding was cancelled by disconnect detection")
-                raise asyncio.CancelledError(
-                    "Padding cancelled due to client disconnect"
-                )
-
-            log.info("Modal padding complete", size=result["size"])
-            return PaddingResponse(**result)
-        except asyncio.CancelledError:
-            log.warning(
-                "Modal padding cancelled (Hatchet timeout, disconnect detected on Modal side)"
-            )
-            raise
-        except httpx.TimeoutException as e:
-            log.error("Modal padding timeout", error=str(e), exc_info=True)
-            raise Exception(f"Modal padding timeout: {e}") from e
-        except httpx.HTTPStatusError as e:
-            log.error("Modal padding HTTP error", error=str(e), exc_info=True)
-            raise Exception(f"Modal padding HTTP error: {e}") from e
-        except Exception as e:
-            log.error("Modal padding unexpected error", error=str(e), exc_info=True)
-            raise
--- a/server/reflector/settings.py
+++ b/server/reflector/settings.py
@@ -98,10 +98,6 @@ class Settings(BaseSettings):
    # Diarization: local pyannote.audio
    DIARIZATION_PYANNOTE_AUTH_TOKEN: str | None = None

-    # Audio Padding (Modal.com backend)
-    PADDING_URL: str | None = None
-    PADDING_MODAL_API_KEY: str | None = None
-
    # Sentry
    SENTRY_DSN: str | None = None

--- a/server/reflector/utils/audio_constants.py
+++ b/server/reflector/utils/audio_constants.py
@@ -5,9 +5,7 @@ Used by both Hatchet workflows and Celery pipelines for consistent audio encodin
 """

 # Opus codec settings
-# ref B0F71CE8-FC59-4AA5-8414-DAFB836DB711
 OPUS_STANDARD_SAMPLE_RATE = 48000
-# ref B0F71CE8-FC59-4AA5-8414-DAFB836DB711
 OPUS_DEFAULT_BIT_RATE = 128000  # 128kbps for good speech quality

 # S3 presigned URL expiration
--- a/server/reflector/video_platforms/daily.py
+++ b/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:
--- a/server/reflector/views/rooms.py
+++ b/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,
--- a/server/reflector/worker/process.py
+++ b/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

--- a/server/tests/test_daily_presence_deactivation.py
+++ b/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
--- a/server/uv.lock
+++ b/server/uv.lock
@@ -159,20 +159,21 @@ wheels = [

 [[package]]
 name = "aiortc"
-version = "1.14.0"
+version = "1.13.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
    { name = "aioice" },
    { name = "av" },
+    { name = "cffi" },
    { name = "cryptography" },
    { name = "google-crc32c" },
    { name = "pyee" },
    { name = "pylibsrtp" },
    { name = "pyopenssl" },
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+    { url = "https://files.pythonhosted.org/packages/87/29/765633cab5f1888890f5f172d1d53009b9b14e079cdfa01a62d9896a9ea9/aiortc-1.13.0-py3-none-any.whl", hash = "sha256:9ccccec98796f6a96bd1c3dd437a06da7e0f57521c96bd56e4b965a91b03a0a0", size = 92910 },
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 [[package]]
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 ]

 [[package]]
@@ -3262,7 +3267,7 @@ requires-dist = [
    { name = "aiohttp-cors", specifier = ">=0.7.0" },
    { name = "aiortc", specifier = ">=1.5.0" },
    { name = "alembic", specifier = ">=1.11.3" },
-    { name = "av", specifier = ">=15.0.0" },
+    { name = "av", specifier = ">=10.0.0" },
    { name = "celery", specifier = ">=5.3.4" },
    { name = "databases", extras = ["aiosqlite", "asyncpg"], specifier = ">=0.7.0" },
    { name = "fastapi", extras = ["standard"], specifier = ">=0.100.1" },
--- a/www/app/(app)/rooms/page.tsx
+++ b/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,
--- a/www/app/(app)/transcripts/[transcriptId]/correct/page.tsx
+++ b/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);
--- a/www/app/(app)/transcripts/[transcriptId]/page.tsx
+++ b/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);
--- a/www/app/(app)/transcripts/[transcriptId]/processing/page.tsx
+++ b/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);
--- a/www/app/(app)/transcripts/[transcriptId]/record/page.tsx
+++ b/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();

--- a/www/app/(app)/transcripts/[transcriptId]/upload/page.tsx
+++ b/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();

--- a/www/app/(app)/transcripts/transcriptTitle.tsx
+++ b/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) => {
--- a/www/app/(app)/transcripts/useMp3.ts
+++ b/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);
--- a/www/app/(app)/transcripts/useParticipants.ts
+++ b/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) {
--- a/www/app/(app)/transcripts/useTopicWithWords.ts
+++ b/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,
  );

--- a/www/app/(app)/transcripts/useTopics.ts
+++ b/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,
--- a/www/app/(app)/transcripts/useWaveform.ts
+++ b/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,
--- a/www/app/(app)/transcripts/useWebSockets.ts
+++ b/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":
--- a/www/app/[roomName]/MeetingSelection.tsx
+++ b/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} />
--- a/www/app/[roomName]/components/DailyRoom.tsx
+++ b/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,
--- a/www/app/lib/apiHooks.ts
+++ b/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();

--- a/www/app/reflector-api.d.ts
+++ b/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;
Author	SHA1	Message	Date
Igor Loskutov	485b455c69	race condition debug wip	2026-01-30 14:38:12 -05:00
Igor Loskutov	74c9ec2ff1	race condition debug wip	2026-01-30 14:37:53 -05:00
Igor Loskutov	aac89e8d03	rejoin tags backend	2026-01-29 15:57:09 -05:00
Igor Loskutov	13088e72f8	feat: Trigger presence poll on join endpoint for Daily meetings 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.	2026-01-26 18:05:44 -05:00
Igor Loskutov	775c9b667d	feat: Add meeting leave endpoint for faster presence detection (no-mistaken) Backend: - Add POST /rooms/{room_name}/meetings/{meeting_id}/leave endpoint - Triggers poll_daily_room_presence_task immediately on user disconnect - Reduces detection latency from 0-30s (periodic poll) to ~1-2s Frontend: - Add useRoomLeaveMeeting() mutation hook - Add beforeunload handler in DailyRoom that calls sendBeacon() - Guarantees API call completion even if tab closes mid-request Context: - Daily.co webhooks handle clean disconnects - This endpoint handles dirty disconnects (tab close, crash, network drop) - Redis lock prevents spam if multiple users leave simultaneously This commit is no-mistaken and follows user requirements for readonly research task that was later approved for implementation.	2026-01-26 17:59:33 -05:00