feat: Intel HDA audio driver, audio streaming syscalls, userspace Music app, fixes and improvements, rudimentary Bluetooth support

kernel/src/Drivers/Init.hpp

@@ -14,7 +14,8 @@ namespace Drivers {
     // Post-probe: wire up GPU framebuffer to cursor subsystem.
     void InitializeGraphics();
 
-    // Probe PCI devices for Normal-phase drivers (xHCI, E1000, E1000E, AHCI).
+    // Probe PCI devices for Normal-phase drivers (xHCI, E1000, E1000E, AHCI, NVMe, IntelHDA).
+    // USB class drivers (Bluetooth, etc.) initialize automatically during xHCI enumeration.
     void ProbeNormal();
 
     // Post-probe: initialize network stack.
@@ -23,4 +24,7 @@ namespace Drivers {
     // Post-probe: register SATA drives with VFS.
     void InitializeStorage();
 
+    // Post-probe: initialize audio subsystem.
+    void InitializeAudio();
+
 }