content: add Glass Chime lock sound

Add a gentle glass chime with layered high-frequency harmonics
and smooth exponential decay. Original CC0 creation.

Part of NAT-69 content catalog expansion.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

Author: tallnato

content/locksounds/glass-chime.md

@@ -0,0 +1,10 @@
+---
+title: Glass Chime
+author: Volts Team
+description: A gentle, high-pitched glass chime with layered harmonics and a smooth decay.
+tags:
+  - minimal
+  - ambient
+---
+
+A gentle glass chime with layered high-frequency harmonics that decay naturally. Perfect for a subtle, ambient lock confirmation sound. Original CC0 creation.

content/locksounds/glass-chime/glass-chime.wav

@@ -0,0 +1,6 @@
+title: Glass Chime
+author: Volts Team
+description: A gentle, high-pitched glass chime with layered harmonics and a smooth decay.
+tags:
+  - minimal
+  - ambient