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

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

config/dot/quickshell/services/SettingsSearch.qml

@@ -59,7 +59,8 @@ Singleton {
         "notifications": "notifications",
         "capture": "screen-intelligence",
         "gaming": "gaming",
-        "search": "applications"
+        "search": "applications",
+        "sound": "sound"
     })
 
     // Settings that are real but have no schema entry, because the system owns
@@ -126,6 +127,13 @@ Singleton {
         { label: "Input volume", detail: "Choose the microphone and its level", page: "sound" },
         { label: "Per-application volume", detail: "Set the level of each application separately", page: "sound" },
         { label: "Event sounds", detail: "Play alerts and interface event sounds", page: "sound" },
+        { label: "Balance", detail: "Shift the output between the left and right speaker", page: "sound" },
+        { label: "Speaker test", detail: "Play a tone through each channel to find which speaker is which", page: "sound" },
+        { label: "Microphone test", detail: "Record a few seconds and play it straight back", page: "sound" },
+        { label: "Alert sound", detail: "The sound theme alerts and Panama's notification chime use", page: "sound" },
+        { label: "Applications using the microphone", detail: "What is listening right now, and muting it", page: "sound" },
+        { label: "Move an application's audio", detail: "Send one application to a different output device", page: "sound" },
+        { label: "Device profiles", detail: "Switch a sound card between stereo, surround, and headset modes", page: "sound" },
         { label: "Saved passwords", detail: "The login keyring and what is stored in it", page: "privacy" },
         { label: "Camera and microphone", detail: "Which applications may use them", page: "privacy" },
         { label: "Screen sharing", detail: "Which applications may capture the screen", page: "privacy" },