Add company dashboard improvements and upload/auth features

README.md

@@ -38,6 +38,20 @@ Open http://127.0.0.1:5000
 - SQLite DB is stored at `instance/signage.sqlite`.
 - Uploaded files go to `app/static/uploads/`.
 
+## Display player
+
+Open:
+
+- `http://<host>/display/<token>` for live playback (counts towards the concurrent display limit)
+- `http://<host>/display/<token>?preview=1` for preview (does not count towards the concurrent display limit)
+
+### Live updates
+
+The player keeps itself up-to-date automatically:
+
+- It listens to `GET /api/display/<token>/events` (Server-Sent Events) and reloads the playlist immediately when it changes.
+- It also does a fallback playlist refresh every 5 minutes for networks/proxies that block SSE.
+
 ## SMTP / Forgot password
 
 This project includes a simple **forgot password** flow. SMTP configuration is read from environment variables.
@@ -88,3 +102,5 @@ If the reset email is not received:
 
 
 
+
+