feat: surgery pipeline API, video inference, voice confirm, and tests

- Add FastAPI routes for surgery start/end, results, pending confirmation (WAV upload), and health checks.
- Implement RTSP/Hikvision capture, consumable classification, session manager, MinIO/Baidu voice resolution, and DB persistence.
- Add documentation (client API, video backends, staging checklist) and sample camera/RTSP config.
- Add pytest suite (API contract, session manager, voice, repositories, pipeline persistence) and httpx dev dependency.
- Replace deprecated HTTP_422_UNPROCESSABLE_ENTITY with HTTP_422_UNPROCESSABLE_CONTENT.
- Fix SurgeryPipeline DB reads to use an explicit transaction with autobegin disabled.

Made-with: Cursor

start.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
-# Start PostgreSQL (docker-compose.dev.yml) and run the FastAPI app with hot reload.
+# Start PostgreSQL from docker-compose.dev.yml and run the FastAPI app on the host.
 # Usage: ./start.sh
-# Optional: SKIP_DOCKER=1 to skip Compose (use external DB). Set DATABASE_URL accordingly.
+# Optional: SKIP_DOCKER=1 to skip Compose and use an existing PostgreSQL instance.
 
 set -euo pipefail
 
@@ -23,9 +23,13 @@ if [[ "${SKIP_DOCKER:-0}" != "1" ]]; then
     sleep 1
   done
 else
-  echo "SKIP_DOCKER=1: not starting Docker Compose; using DATABASE_URL from the environment."
+  echo "SKIP_DOCKER=1: not starting Docker Compose; using POSTGRES_* or DATABASE_URL from the environment."
 fi
 
-export DATABASE_URL="${DATABASE_URL:-postgresql+asyncpg://postgres:postgres@localhost:5432/operation_room}"
+export POSTGRES_USER="${POSTGRES_USER:-postgres}"
+export POSTGRES_PASSWORD="${POSTGRES_PASSWORD:-postgres}"
+export POSTGRES_DB="${POSTGRES_DB:-operation_room}"
+export POSTGRES_HOST="${POSTGRES_HOST:-localhost}"
+export POSTGRES_PORT="${POSTGRES_PORT:-35432}"
 
-exec uv run uvicorn main:app --host "${HOST:-0.0.0.0}" --port "${PORT:-8000}" --reload
+exec uv run uvicorn main:app --host "${HOST:-0.0.0.0}" --port "${PORT:-38080}" --reload