feat: request audio permission on device connection

Request microphone permission proactively when DRUM device connects, improving UX by avoiding interruption during recording. Fallback permission request in Voice component remains for cases where permission was denied or revoked.

Author: DavidMenting

src/lib/stores/midi.svelte.ts

@@ -2,6 +2,7 @@
 
 import { getCurrentFirmwareVersion } from '$lib/config/firmware';
 import { createLogger, isMidiRealtimeMessage, isMidiSystemMessage } from '$lib/utils/logger';
+import { requestPermission as requestAudioPermission } from '$lib/stores/audioInput.svelte';
 
 interface MidiState {
     access: MIDIAccess | null;
@@ -301,6 +302,12 @@ function connectDevice(deviceId: string) {
             }
             _setDeviceConnected(output, input || null);
             logger.info('Connected to MIDI device: ' + output.name);
+
+            // Request audio recording permission proactively after device connection
+            // This improves UX by not interrupting the user during recording
+            requestAudioPermission().catch((error) => {
+                logger.warn('Failed to request audio permission: ' + (error instanceof Error ? error.message : String(error)));
+            });
         } else {
             _setDeviceConnectionError('Selected device not found.');
             logger.error('Device not found: ' + deviceId);