Give Sound the whole story, and keep the buttons inside the card

Claude-Session: https://claude.ai/code/session_01Ms2FbjQy31TVf3CEvQhGM8

docs/settings.md

@@ -4,7 +4,7 @@
 Do not edit this file. Run `quickshell/scripts/panama-settings-docs`
 after changing the schema; a contract fails when this copy is stale.
 
-162 settings across 34 groups. 70 of them are applied to the compositor and confirmed by reading the value back.
+164 settings across 35 groups. 70 of them are applied to the compositor and confirmed by reading the value back.
 
 ## accessibility
 
@@ -291,6 +291,15 @@ Found on **Applications › Applications**.
 |---|---|---|
 | **Web search engine**<br>`webSearchUrl` | https://duckduckgo.com/?q= | Where the launcher's web search sends a query; the search text is appended |
 
+## sound
+
+Found on **Sound**.
+
+| Setting | Default | What it does |
+|---|---|---|
+| **Over-amplification**<br>`overAmplification` | false | Lets the volume slider go to 150% — louder, at the cost of distortion on some hardware |
+| **Volume-change blip**<br>`volumeChangeBlip` | true | A short click each time the volume keys move the output level |
+
 ## themes
 
 Found on **Appearance**.