Pages: hand recorder needs the color module until the fix

Headsets without the Arcturus color passthrough module stop at the
camera check (ft-camd publishes only 2 of 4 mono cameras). Say so on
the install page, with the fix due by October 6.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

hand-recorder.md

@@ -6,6 +6,8 @@ title: Install the Frametop Hand Recorder
 
 The Hand Recorder records your hands with the Steam Frame's tracking cameras for Frametop's open hand dataset ([DeeJanuz/frametop-hands](https://huggingface.co/datasets/DeeJanuz/frametop-hands) on Hugging Face). These are the Konsole commands to install it.
 
+> **Known issue (October 5, 2026):** the recorder currently works only on headsets with the Arcturus color passthrough module attached. Without the module, the camera check stops with "Not all of the headset's tracking cameras are running (ft-camd publishes only 2 of 4 mono cameras ...)", and restarting SteamVR or the headset doesn't help. A fix for headsets without the module will be published within 24 hours (by October 6). Once it's out, run the commands under [Update](#update).
+
 Join the [Frametop Discord](https://discord.gg/W3X9f7z3Bc) for questions and help with recording.
 
 For now the recorder runs inside Frametop's desktop, so these steps install Frametop first. A standalone recorder that runs from the SteamVR dashboard without Frametop is planned.