Add 1209/6ABB for Gabbro virtual FIDO2 authenticator

Author: Zabamund

1209/6ABB/index.md

@@ -0,0 +1,19 @@
+---
+layout: pid
+title: Gabbro virtual FIDO2 authenticator
+owner: gabbro-foss
+license: GPL-3.0-only
+site: https://github.com/gabbro-foss/gabbro
+source: https://github.com/gabbro-foss/gabbro
+---
+Gabbro is a free and open-source password manager. On Linux it exposes
+the passkeys stored in its vault as a virtual FIDO2/CTAP2 security key,
+created through the kernel's /dev/uhid interface, so browsers can use
+them via the standard USB HID (CTAPHID) path.
+
+The project is software-only: there is no physical hardware, and every
+installation presents the same virtual device. A fixed, registered
+VID/PID is needed so that FIDO tooling and udev rules can identify the
+authenticator, and so it cannot collide with other projects using the
+shared testing PID (1209/0001). Per-user PIDs would not make sense here,
+same as for 1209/F1D0 (Pi Zero Security Key).

org/gabbro-foss/index.md

@@ -0,0 +1,7 @@
+---
+layout: org
+title: gabbro-foss
+site: https://github.com/gabbro-foss
+---
+Maintainer of Gabbro, a free and open-source (GPL-3.0-only)
+quantum-resistant password manager.