Prepared demo files and demo explanation file. Added debug only button to trigger demo file ingest on the server to queue and prepare the files. Added small expressjs server for talking between the web app and the rust engine containers.

rust-engine/README.md

@@ -66,6 +66,14 @@
 1. docker compose up -d mysql qdrant
 2. set env DATABASE_URL and QDRANT_URL
 3. cargo run
+4. (optional) import demo PDFs
+   - Ensure demo files are located in `rust-engine/demo-data` (default) or set `DEMO_DATA_DIR` env var to a folder containing PDFs.
+   - Call the endpoint:
+     - POST <http://localhost:8000/api/files/import-demo>
+     - Optional query `?force=1` to overwrite existing by filename
+   - Or run the PowerShell helper:
+     - `./scripts/import_demo.ps1` (adds all PDFs in demo-data)
+     - `./scripts/import_demo.ps1 -Force` (overwrite existing)
 
 ## Notes