Extract service initialization for headless operation

OpenOats/Sources/OpenOats/App/AppCoordinator.swift

@@ -254,20 +254,44 @@ final class AppCoordinator {
         let title = transcriptStore.conversationState.currentTopic.isEmpty
             ? nil : transcriptStore.conversationState.currentTopic
 
+        // Extract meeting app name from state machine metadata (available in .ending state)
+        let meetingAppName: String?
+        if case .ending(let metadata) = state {
+            meetingAppName = metadata.detectionContext?.meetingApp?.name
+        } else {
+            meetingAppName = nil
+        }
+
+        // Capture the ASR engine name from current settings
+        let engineName = settings?.transcriptionModel.rawValue
+
         let index = SessionIndex(
             id: sessionID,
             startedAt: transcriptStore.utterances.first?.timestamp ?? Date(),
             endedAt: Date(),
             templateSnapshot: sessionTemplateSnapshot,
             title: title,
             utteranceCount: utteranceCount,
-            hasNotes: false
+            hasNotes: false,
+            meetingApp: meetingAppName,
+            engine: engineName
         )
         let sidecar = SessionSidecar(index: index, notes: nil)
 
         // 4. Write sidecar
         await sessionStore.writeSidecar(sidecar)
 
+        // 4b. Generate structured Markdown file from JSONL (has refined text after backfill)
+        let jsonlRecords = await sessionStore.loadTranscript(sessionID: sessionID)
+        if !jsonlRecords.isEmpty, let settings {
+            let outputDir = URL(fileURLWithPath: settings.notesFolderPath)
+            MarkdownMeetingWriter.write(
+                metadata: .init(from: index),
+                records: jsonlRecords,
+                outputDirectory: outputDir
+            )
+        }
+
         // 5. Close JSONL file
         await sessionStore.endSession()
 

OpenOats/Sources/OpenOats/App/AppRuntime.swift

@@ -39,6 +39,7 @@ final class AppRuntime {
     let notesDirectory: URL
 
     private var didSeedInitialData = false
+    private var didInitializeServices = false
 
     init(
         mode: AppRuntimeMode,
@@ -168,6 +169,17 @@ final class AppRuntime {
         )
     }
 
+    func ensureServicesInitialized(settings: AppSettings, coordinator: AppCoordinator) {
+        guard !didInitializeServices else { return }
+        didInitializeServices = true
+
+        let services = makeServices(settings: settings, coordinator: coordinator)
+        coordinator.transcriptionEngine = services.transcriptionEngine
+        coordinator.transcriptLogger = services.transcriptLogger
+        coordinator.refinementEngine = services.refinementEngine
+        coordinator.audioRecorder = services.audioRecorder
+    }
+
     func seedIfNeeded(coordinator: AppCoordinator) async {
         guard !didSeedInitialData else { return }
         didSeedInitialData = true

OpenOats/Sources/OpenOats/Audio/MicCapture.swift

@@ -33,7 +33,7 @@ final class MicCapture: @unchecked Sendable {
         )
     }
 
-    func bufferStream(deviceID: AudioDeviceID? = nil) -> AsyncStream<AVAudioPCMBuffer> {
+    func bufferStream(deviceID: AudioDeviceID? = nil, echoCancellation: Bool = false) -> AsyncStream<AVAudioPCMBuffer> {
         // Defensive cleanup of any prior state
         _streamContinuation.withLock { $0?.finish(); $0 = nil }
         engine.inputNode.removeTap(onBus: 0)
@@ -55,6 +55,16 @@ final class MicCapture: @unchecked Sendable {
             let inputNode = engine.inputNode
             diagLog("[MIC-1b] input node ready")
 
+            // Enable voice processing (AEC + noise suppression) if requested
+            if echoCancellation {
+                do {
+                    try inputNode.setVoiceProcessingEnabled(true)
+                    diagLog("[MIC-1c] voice processing (AEC) enabled")
+                } catch {
+                    diagLog("[MIC-1c] failed to enable voice processing: \(error.localizedDescription)")
+                }
+            }
+
             // Set input device before accessing inputNode format
             var resolvedDeviceID: AudioDeviceID?
             if let id = deviceID {