feat: add Parakeet speaker diarization

Meetingnotes.xcodeproj/project.pbxproj

@@ -276,7 +276,7 @@
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 22;
+				CURRENT_PROJECT_VERSION = 31;
 				DEVELOPMENT_ASSET_PATHS = "\"meetingnotes/Preview Content\"";
 				DEVELOPMENT_TEAM = G9LVHZAJNX;
 				ENABLE_HARDENED_RUNTIME = YES;
@@ -290,7 +290,7 @@
 					"@executable_path/../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 15.0;
-				MARKETING_VERSION = 1.1.10;
+				MARKETING_VERSION = 1.1.19;
 				ONLY_ACTIVE_ARCH = NO;
 				OTHER_SWIFT_FLAGS = "$(inherited) -D ENABLE_TCC_SPI";
 				PRODUCT_BUNDLE_IDENTIFIER = net.jamesbone.meetingnotes;
@@ -312,7 +312,7 @@
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 22;
+				CURRENT_PROJECT_VERSION = 31;
 				DEVELOPMENT_ASSET_PATHS = "\"meetingnotes/Preview Content\"";
 				DEVELOPMENT_TEAM = G9LVHZAJNX;
 				ENABLE_HARDENED_RUNTIME = YES;
@@ -326,7 +326,7 @@
 					"@executable_path/../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 15.0;
-				MARKETING_VERSION = 1.1.10;
+				MARKETING_VERSION = 1.1.19;
 				ONLY_ACTIVE_ARCH = YES;
 				OTHER_SWIFT_FLAGS = "$(inherited) -D ENABLE_TCC_SPI";
 				PRODUCT_BUNDLE_IDENTIFIER = net.jamesbone.meetingnotes;

meetingnotes/Info.plist

@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>LSUIElement</key>
+	<true/>
 	<key>NSAppTransportSecurity</key>
 	<dict>
 		<key>NSAllowsLocalNetworking</key>

meetingnotes/Managers/AudioManager.swift

@@ -3,6 +3,23 @@ import Combine
 import Foundation
 import SwiftUI
 
+private enum RecoveryTranscriptionError: LocalizedError {
+    case noAudioFiles
+    case noSpeech
+    case requestFailed(String)
+
+    var errorDescription: String? {
+        switch self {
+        case .noAudioFiles:
+            return "The saved recovery audio could not be found."
+        case .noSpeech:
+            return "No speech was detected in the saved recovery audio."
+        case .requestFailed(let details):
+            return "Retry transcription failed for \(details)"
+        }
+    }
+}
+
 /// Captures microphone and system audio locally, then sends completed files to Coder.
 @MainActor
 final class AudioManager: NSObject, ObservableObject {
@@ -14,22 +31,20 @@ final class AudioManager: NSObject, ObservableObject {
     @Published var errorMessage: String?
     @Published var micAudioLevel: Float = 0
     @Published var systemAudioLevel: Float = 0
+    private(set) var lastRecoveryAudioFolderName: String?
     
     private var audioEngine = AVAudioEngine()
     private var sessionID = UUID()
+    private var meetingID = UUID()
     private var processTap: ProcessTap?
-    private let audioProcessController = AudioProcessController()
     private let permission = AudioRecordingPermission()
     private let tapQueue = DispatchQueue(label: "io.meetingnotes.audiotap", qos: .userInitiated)
     private let audioFileLock = NSLock()
     private var isTapActive = false
-    private var isRestartingSystemTap = false
     private var isAcceptingAudio = false
     private var micRetryCount = 0
     private var pendingMicRestart: DispatchWorkItem?
     private let maxMicRetries = 3
-    private var cancellables = Set<AnyCancellable>()
-    
     private var micAudioFile: AVAudioFile?
     private var systemAudioFile: AVAudioFile?
     private var micAudioURL: URL?
@@ -39,24 +54,18 @@ final class AudioManager: NSObject, ObservableObject {
     private override init() {
         super.init()
         observeAudioEngine()
-        audioProcessController.activate()
-        NSWorkspace.shared.publisher(for: \.runningApplications)
-            .debounce(for: .seconds(1), scheduler: RunLoop.main)
-            .sink { [weak self] _ in
-                guard let self, self.isTapActive else { return }
-                Task { await self.restartSystemAudioTapIfNeeded() }
-            }
-            .store(in: &cancellables)
     }
 
     deinit {
         NotificationCenter.default.removeObserver(self)
     }
 
-    func startRecording() {
+    func startRecording(for meetingID: UUID) {
         errorMessage = nil
+        lastRecoveryAudioFolderName = nil
         cancelCapture(removeFiles: true)
         sessionID = UUID()
+        self.meetingID = meetingID
         recordingStartedAt = Date()
         do {
             try prepareAudioFiles()
@@ -69,7 +78,7 @@ final class AudioManager: NSObject, ObservableObject {
     }
 
     func stopRecordingAndTranscribe() async -> [TranscriptChunk] {
-        let completedSessionID = sessionID
+        let completedMeetingID = meetingID
         let captureStartedAt = recordingStartedAt
         let files = stopCaptureAndCloseFiles()
         isProcessing = true
@@ -78,12 +87,92 @@ final class AudioManager: NSObject, ObservableObject {
         }
 
         let model = UserDefaultsManager.shared.transcriptionModel
-        async let micResult = transcribe(files[0], model: model)
-        async let systemResult = transcribe(files[1], model: model)
+        async let micResult = transcribe(files[0], model: model, diarization: false)
+        async let systemResult = transcribe(files[1], model: model, diarization: true)
         let (micTranscription, systemTranscription) = await (micResult, systemResult)
         let results = [micTranscription, systemTranscription]
 
-        var updated = transcriptChunks.filter(\.isFinal)
+        let (updated, failures) = buildTranscriptChunks(
+            from: results,
+            captureStartedAt: captureStartedAt,
+            existingChunks: transcriptChunks.filter(\.isFinal)
+        )
+        transcriptChunks = updated
+        let completedFiles = files.compactMap { $0 }
+        let audioFolder = preserveAudioFiles(completedFiles, meetingID: completedMeetingID)
+        lastRecoveryAudioFolderName = audioFolder?.lastPathComponent
+        if !failures.isEmpty {
+            let retentionDays = UserDefaultsManager.shared.audioRetentionDays
+            let retentionUnit = retentionDays == 1 ? "day" : "days"
+            let recoveryMessage = audioFolder == nil
+                ? " The audio remains in the app's temporary folder."
+                : " Audio was kept for \(retentionDays) \(retentionUnit). Use Show Audio Folder in the Meetingnotes menu to find it."
+            errorMessage = "Transcription failed for " + failures.joined(separator: "; ") + recoveryMessage
+        } else if audioFolder == nil, !completedFiles.isEmpty {
+            errorMessage = "The transcript completed, but Meetingnotes could not move the audio into its retention folder."
+        }
+        return updated
+    }
+
+    func transcribeRecoveryAudio(in folder: URL, captureStartedAt: Date) async throws -> [TranscriptChunk] {
+        let recoveryFiles = LocalStorageManager.shared.recoveryAudioFiles(in: folder)
+        guard !recoveryFiles.isEmpty else {
+            throw RecoveryTranscriptionError.noAudioFiles
+        }
+
+        isProcessing = true
+        defer { isProcessing = false }
+        let model = UserDefaultsManager.shared.transcriptionModel
+        let micURL = recoveryFiles.first(where: { $0.source == .mic })?.url
+        let systemURL = recoveryFiles.first(where: { $0.source == .system })?.url
+        async let micResult = transcribe(micURL, model: model, diarization: false)
+        async let systemResult = transcribe(systemURL, model: model, diarization: true)
+        let (micTranscription, systemTranscription) = await (micResult, systemResult)
+        let results = [micTranscription, systemTranscription]
+        let (chunks, failures) = buildTranscriptChunks(
+            from: results,
+            captureStartedAt: captureStartedAt,
+            existingChunks: []
+        )
+
+        if !failures.isEmpty {
+            throw RecoveryTranscriptionError.requestFailed(failures.joined(separator: "; "))
+        }
+        guard !chunks.isEmpty else {
+            throw RecoveryTranscriptionError.noSpeech
+        }
+        return chunks
+    }
+
+    func cancelRecording() {
+        cancelCapture(removeFiles: true)
+        lastRecoveryAudioFolderName = nil
+    }
+
+    private func transcribe(
+        _ fileURL: URL?,
+        model: String,
+        diarization: Bool
+    ) async -> Result<CoderAPIClient.Transcription, Error>? {
+        guard let fileURL else { return nil }
+        do {
+            return .success(try await CoderAPIClient.shared.transcribe(
+                fileURL: fileURL,
+                model: model,
+                diarization: diarization,
+                maxSpeakerCount: 4
+            ))
+        } catch {
+            return .failure(error)
+        }
+    }
+
+    private func buildTranscriptChunks(
+        from results: [Result<CoderAPIClient.Transcription, Error>?],
+        captureStartedAt: Date,
+        existingChunks: [TranscriptChunk]
+    ) -> ([TranscriptChunk], [String]) {
+        var updated = existingChunks
         var failures: [String] = []
         for (source, result) in zip([AudioSource.mic, .system], results) {
             guard let result else { continue }
@@ -101,6 +190,7 @@ final class AudioManager: NSObject, ObservableObject {
                         updated.append(TranscriptChunk(
                             timestamp: captureStartedAt.addingTimeInterval(max(0, segment.start)),
                             source: source,
+                            speaker: source == .system ? segment.speaker : nil,
                             text: text,
                             isFinal: true
                         ))
@@ -114,31 +204,7 @@ final class AudioManager: NSObject, ObservableObject {
             if $0.timestamp != $1.timestamp { return $0.timestamp < $1.timestamp }
             return $0.source.rawValue < $1.source.rawValue
         }
-        transcriptChunks = updated
-        let completedFiles = files.compactMap { $0 }
-        if failures.isEmpty {
-            removeAudioFiles(completedFiles)
-        } else {
-            let recoveryFolder = preserveAudioFiles(completedFiles, sessionID: completedSessionID)
-            let recoveryMessage = recoveryFolder == nil
-                ? " The audio remains in the app's temporary folder."
-                : " Audio was saved in Documents/Meetingnotes-Recovery/\(completedSessionID.uuidString)."
-            errorMessage = "Transcription failed for " + failures.joined(separator: "; ") + recoveryMessage
-        }
-        return updated
-    }
-    
-    func cancelRecording() {
-        cancelCapture(removeFiles: true)
-    }
-        
-    private func transcribe(_ fileURL: URL?, model: String) async -> Result<CoderAPIClient.Transcription, Error>? {
-        guard let fileURL else { return nil }
-        do {
-            return .success(try await CoderAPIClient.shared.transcribe(fileURL: fileURL, model: model))
-        } catch {
-            return .failure(error)
-        }
+        return (updated, failures)
     }
     
     private func prepareAudioFiles() throws {
@@ -239,8 +305,7 @@ final class AudioManager: NSObject, ObservableObject {
             return
         }
         
-        let processIDs = audioProcessController.processes.map(\.objectID)
-        let newTap = ProcessTap(target: .systemAudio(processObjectIDs: processIDs))
+        let newTap = ProcessTap(target: .systemAudio)
         newTap.activate()
         if let tapError = newTap.errorMessage {
             errorMessage = "Failed to activate system audio capture: \(tapError)"
@@ -264,21 +329,8 @@ final class AudioManager: NSObject, ObservableObject {
         }
     }
     
-    private func restartSystemAudioTapIfNeeded() async {
-        let next = Set(audioProcessController.processes.map(\.objectID))
-        let current: Set<AudioObjectID>
-        if case .systemAudio(let processIDs) = processTap?.target {
-            current = Set(processIDs)
-        } else {
-            current = []
-        }
-        if next != current { await restartSystemAudioTap() }
-    }
-
     private func restartSystemAudioTap() async {
         guard isRecording else { return }
-        isRestartingSystemTap = true
-        defer { isRestartingSystemTap = false }
         if isTapActive {
             processTap?.invalidate()
             processTap = nil
@@ -302,12 +354,14 @@ final class AudioManager: NSObject, ObservableObject {
     private func startTapIO(_ tap: ProcessTap) throws {
         guard var description = tap.tapStreamDescription,
               let inputFormat = AVAudioFormat(streamDescription: &description),
-              let targetFormat = systemAudioFile?.processingFormat else {
+              let targetFormat = systemAudioFile?.processingFormat,
+              let converter = AVAudioConverter(from: inputFormat, to: targetFormat) else {
             throw NSError(domain: "AudioManager", code: -1, userInfo: [NSLocalizedDescriptionKey: "Unsupported system audio format"])
         }
         try tap.run(on: tapQueue) { [weak self] _, inputData, _, _, _ in
-            guard let self,
-                  let converter = AVAudioConverter(from: inputFormat, to: targetFormat) else { return }
+            guard let self else { return }
+            // The tap queue is serial. Reusing the converter preserves its
+            // resampler state instead of discarding audio at every callback.
             self.processAudioBuffer(
                 { self.copyAudioBuffer(from: inputData, format: inputFormat) },
                 converter: converter,
@@ -315,7 +369,7 @@ final class AudioManager: NSObject, ObservableObject {
                 source: .system
             )
         } invalidationHandler: { [weak self] _ in
-            guard let self, !self.isRestartingSystemTap, self.isRecording else { return }
+            guard let self, self.isRecording else { return }
             Task { await self.restartSystemAudioTap() }
         }
     }
@@ -463,29 +517,8 @@ final class AudioManager: NSObject, ObservableObject {
         for url in urls { try? FileManager.default.removeItem(at: url) }
     }
 
-    private func preserveAudioFiles(_ urls: [URL], sessionID: UUID) -> URL? {
-        guard !urls.isEmpty,
-              let documents = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first else {
-            return nil
-        }
-        let folder = documents
-            .appendingPathComponent("Meetingnotes-Recovery", isDirectory: true)
-            .appendingPathComponent(sessionID.uuidString, isDirectory: true)
-        do {
-            try FileManager.default.createDirectory(at: folder, withIntermediateDirectories: true)
-        } catch {
-            return nil
-        }
-        var preservedCount = 0
-        for url in urls {
-            do {
-                try FileManager.default.moveItem(at: url, to: folder.appendingPathComponent(url.lastPathComponent))
-                preservedCount += 1
-            } catch {
-                continue
-            }
-        }
-        return preservedCount > 0 ? folder : nil
+    private func preserveAudioFiles(_ urls: [URL], meetingID: UUID) -> URL? {
+        LocalStorageManager.shared.preserveAudioFiles(urls, for: meetingID)
     }
         
     private func resetAudioLevels() {

meetingnotes/Managers/LocalStorageManager.swift

@@ -2,6 +2,7 @@
 // Handles local storage of meetings and app data
 
 import Foundation
+import AppKit
 
 /// Manages local file storage for meetings and app data
 class LocalStorageManager {
@@ -15,6 +16,7 @@ class LocalStorageManager {
     private let documentsDirectory: URL
     private let meetingsDirectory: URL
     private let templatesDirectory: URL
+    private let recoveryDirectory: URL
     
     private init() {
         // Get the app's documents directory
@@ -27,11 +29,17 @@ class LocalStorageManager {
         // Create templates subdirectory
         templatesDirectory = documentsDirectory.appendingPathComponent("Templates")
 
+        recoveryDirectory = documentsDirectory.appendingPathComponent("Meetingnotes Audio")
+        
         // Ensure directories exist
         try? FileManager.default.createDirectory(at: meetingsDirectory,
                                                withIntermediateDirectories: true)
         try? FileManager.default.createDirectory(at: templatesDirectory,
                                                withIntermediateDirectories: true)
+        try? FileManager.default.createDirectory(at: recoveryDirectory,
+                                               withIntermediateDirectories: true)
+        migrateLegacyRecoveryAudio()
+        purgeExpiredAudioFolders()
     }
     
     // MARK: - Meeting Management
@@ -144,6 +152,179 @@ class LocalStorageManager {
         }
     }
 
+    // MARK: - Recovery Audio
+
+    func preserveAudioFiles(_ urls: [URL], for meetingID: UUID) -> URL? {
+        guard !urls.isEmpty else { return nil }
+        purgeExpiredAudioFolders()
+
+        let folder = recoveryDirectory.appendingPathComponent(meetingID.uuidString, isDirectory: true)
+        do {
+            try FileManager.default.createDirectory(at: folder, withIntermediateDirectories: true)
+        } catch {
+            return nil
+        }
+
+        var preservedCount = 0
+        for url in urls {
+            let destination = folder.appendingPathComponent(url.lastPathComponent)
+            do {
+                if FileManager.default.fileExists(atPath: destination.path) {
+                    try FileManager.default.removeItem(at: destination)
+                }
+                try FileManager.default.moveItem(at: url, to: destination)
+                preservedCount += 1
+            } catch {
+                continue
+            }
+        }
+        return preservedCount > 0 ? folder : nil
+    }
+
+    func purgeExpiredAudioFolders(now: Date = Date()) {
+        guard let folders = try? FileManager.default.contentsOfDirectory(
+            at: recoveryDirectory,
+            includingPropertiesForKeys: [.isDirectoryKey],
+            options: [.skipsHiddenFiles]
+        ) else { return }
+
+        let retentionInterval = TimeInterval(UserDefaultsManager.shared.audioRetentionDays) * 24 * 60 * 60
+        let expirationDate = now.addingTimeInterval(-retentionInterval)
+        for folder in folders {
+            guard (try? folder.resourceValues(forKeys: [.isDirectoryKey]).isDirectory) == true else { continue }
+            let audioFiles = recoveryAudioFiles(in: folder)
+            let newestDate = audioFiles.compactMap { file -> Date? in
+                let values = try? file.url.resourceValues(forKeys: [.contentModificationDateKey, .creationDateKey])
+                return values?.contentModificationDate ?? values?.creationDate
+            }.max()
+
+            guard let newestDate else {
+                try? FileManager.default.removeItem(at: folder)
+                continue
+            }
+            if newestDate < expirationDate {
+                try? FileManager.default.removeItem(at: folder)
+            }
+        }
+    }
+
+    @MainActor
+    func showAudioFolderInFinder(_ folder: URL? = nil) {
+        let target = folder ?? recoveryDirectory
+        try? FileManager.default.createDirectory(at: target, withIntermediateDirectories: true)
+        NSWorkspace.shared.open(target)
+    }
+
+    func recoveryAudioFolder(named name: String) -> URL? {
+        let trimmedName = name.trimmingCharacters(in: .whitespacesAndNewlines)
+        guard !trimmedName.isEmpty,
+              URL(fileURLWithPath: trimmedName).lastPathComponent == trimmedName else {
+            return nil
+        }
+        let folder = recoveryDirectory.appendingPathComponent(trimmedName, isDirectory: true)
+        var isDirectory: ObjCBool = false
+        guard FileManager.default.fileExists(atPath: folder.path, isDirectory: &isDirectory),
+              isDirectory.boolValue,
+              !recoveryAudioFiles(in: folder).isEmpty else {
+            return nil
+        }
+        return folder
+    }
+
+    func recoveryAudioFiles(in folder: URL) -> [(url: URL, source: AudioSource)] {
+        guard let files = try? FileManager.default.contentsOfDirectory(
+            at: folder,
+            includingPropertiesForKeys: [.creationDateKey, .contentModificationDateKey, .isRegularFileKey],
+            options: [.skipsHiddenFiles]
+        ) else {
+            return []
+        }
+
+        return files.compactMap { url in
+            let name = url.lastPathComponent.lowercased()
+            guard ["m4a", "mp3", "wav", "flac", "webm", "mp4"].contains(url.pathExtension.lowercased()) else {
+                return nil
+            }
+            if name.contains("-mic.") {
+                return (url, .mic)
+            }
+            if name.contains("-system.") {
+                return (url, .system)
+            }
+            return nil
+        }
+    }
+
+    func findRecoveryAudioFolder(for meeting: Meeting) -> URL? {
+        if let name = meeting.recoveryAudioFolderName,
+           let folder = recoveryAudioFolder(named: name) {
+            return folder
+        }
+
+        let claimedFolderNames = Set(
+            loadMeetings()
+                .filter { $0.id != meeting.id }
+                .compactMap(\.recoveryAudioFolderName)
+        )
+        guard let folders = try? FileManager.default.contentsOfDirectory(
+            at: recoveryDirectory,
+            includingPropertiesForKeys: [.isDirectoryKey, .creationDateKey, .contentModificationDateKey],
+            options: [.skipsHiddenFiles]
+        ) else {
+            return nil
+        }
+
+        let candidates = folders.compactMap { folder -> (url: URL, distance: TimeInterval)? in
+            let folderValues = try? folder.resourceValues(
+                forKeys: [.isDirectoryKey, .creationDateKey, .contentModificationDateKey]
+            )
+            let files = recoveryAudioFiles(in: folder)
+            guard folderValues?.isDirectory == true,
+                  !claimedFolderNames.contains(folder.lastPathComponent),
+                  !files.isEmpty else {
+                return nil
+            }
+            let dates = files.compactMap { file -> Date? in
+                let values = try? file.url.resourceValues(forKeys: [.creationDateKey, .contentModificationDateKey])
+                return values?.creationDate ?? values?.contentModificationDate
+            }
+            let referenceDate = dates.min()
+                ?? folderValues?.creationDate
+                ?? folderValues?.contentModificationDate
+            guard let referenceDate else { return nil }
+            return (folder, abs(referenceDate.timeIntervalSince(meeting.date)))
+        }
+
+        // This fallback links recovery files created by older app versions.
+        return candidates
+            .filter { $0.distance <= 12 * 60 * 60 }
+            .min(by: { $0.distance < $1.distance })?
+            .url
+    }
+
+    func deleteRecoveryAudioFolder(_ folder: URL) {
+        guard folder.deletingLastPathComponent().standardizedFileURL == recoveryDirectory.standardizedFileURL else {
+            return
+        }
+        try? FileManager.default.removeItem(at: folder)
+    }
+
+    private func migrateLegacyRecoveryAudio() {
+        let legacyDirectory = documentsDirectory.appendingPathComponent("Meetingnotes-Recovery", isDirectory: true)
+        guard let folders = try? FileManager.default.contentsOfDirectory(
+            at: legacyDirectory,
+            includingPropertiesForKeys: [.isDirectoryKey],
+            options: [.skipsHiddenFiles]
+        ) else { return }
+
+        for folder in folders {
+            let destination = recoveryDirectory.appendingPathComponent(folder.lastPathComponent, isDirectory: true)
+            guard !FileManager.default.fileExists(atPath: destination.path) else { continue }
+            try? FileManager.default.moveItem(at: folder, to: destination)
+        }
+        try? FileManager.default.removeItem(at: legacyDirectory)
+    }
+
     /// Imports meeting JSON files from a folder selected by the user.
     func importMeetings(from directory: URL) throws -> MeetingImportResult {
         let didStartAccess = directory.startAccessingSecurityScopedResource()

meetingnotes/Managers/RecordingSessionManager.swift

@@ -81,7 +81,7 @@ class RecordingSessionManager: ObservableObject {
         
         activeMeetingId = meetingId
         recordingStartedAt = Date()
-        audioManager.startRecording()
+        audioManager.startRecording(for: meetingId)
     }
     
     func stopRecording() async -> [TranscriptChunk] {
@@ -113,6 +113,10 @@ class RecordingSessionManager: ObservableObject {
         return isRecording && activeMeetingId == meetingId
     }
 
+    var lastRecoveryAudioFolderName: String? {
+        audioManager.lastRecoveryAudioFolderName
+    }
+    
     private func updateActiveMeetingTranscript(meetingId: UUID, chunks: [TranscriptChunk]) {
         // Load all meetings
         var meetings = LocalStorageManager.shared.loadMeetings()

meetingnotes/Managers/UserDefaultsManager.swift

@@ -23,6 +23,7 @@ class UserDefaultsManager {
         static let transcriptionModel = "transcriptionModel"
         static let muteDeckAPIEnabled = "muteDeckAPIEnabled"
         static let muteDeckAPIPort = "muteDeckAPIPort"
+        static let audioRetentionDays = "audioRetentionDays"
     }
     
     // MARK: - User Blurb
@@ -78,7 +79,13 @@ class UserDefaultsManager {
     }
 
     var transcriptionModel: String {
-        get { userDefaults.string(forKey: Keys.transcriptionModel) ?? "groq/whisper-large-v3-turbo" }
+        get {
+            let stored = userDefaults.string(forKey: Keys.transcriptionModel)
+            if stored == "local-whisper/whisper-large-v3-turbo" {
+                return "local-parakeet/parakeet-tdt-0.6b-v3"
+            }
+            return stored ?? "local-parakeet/parakeet-tdt-0.6b-v3"
+        }
         set { userDefaults.set(newValue, forKey: Keys.transcriptionModel) }
     }
 
@@ -94,4 +101,12 @@ class UserDefaultsManager {
         }
         set { userDefaults.set(newValue, forKey: Keys.muteDeckAPIPort) }
     }
+
+    var audioRetentionDays: Int {
+        get {
+            guard userDefaults.object(forKey: Keys.audioRetentionDays) != nil else { return 3 }
+            return min(max(userDefaults.integer(forKey: Keys.audioRetentionDays), 1), 365)
+        }
+        set { userDefaults.set(min(max(newValue, 1), 365), forKey: Keys.audioRetentionDays) }
+    }
 }

meetingnotes/MeetingnotesApp.swift

@@ -6,12 +6,14 @@
 //
 
 import SwiftUI
+import AppKit
 import Sparkle
 import PostHog
 
 @main
 struct MeetingnotesApp: App {
     private let updaterController: SPUStandardUpdaterController
+    @StateObject private var recordingSessionManager = RecordingSessionManager.shared
 
     init() {
         updaterController = SPUStandardUpdaterController(updaterDelegate: nil, userDriverDelegate: nil)
@@ -34,17 +36,145 @@ struct MeetingnotesApp: App {
     }
 
     var body: some Scene {
-        WindowGroup {
+        WindowGroup("Meetingnotes", id: "main") {
             ContentView()
                 .frame(minWidth: 700, minHeight: 400)
+                .background(MainWindowConfigurator())
         }
         .windowResizability(.automatic)
         .defaultSize(width: 1000, height: 600)
         .commands {
             CommandGroup(after: .appInfo) {
                 CheckForUpdatesView(updater: updaterController.updater)
+                Divider()
+                Button("Show Audio Folder") {
+                    LocalStorageManager.shared.showAudioFolderInFinder()
+                }
             }
         }
+
+        MenuBarExtra {
+            MeetingnotesMenu(
+                recordingSessionManager: recordingSessionManager,
+                updater: updaterController.updater
+            )
+        } label: {
+            Image(systemName: recordingSessionManager.isRecording ? "record.circle.fill" : "waveform")
+                .accessibilityLabel(recordingSessionManager.isRecording ? "Meetingnotes recording" : "Meetingnotes")
+        }
+    }
+}
+
+private struct MeetingnotesMenu: View {
+    @ObservedObject var recordingSessionManager: RecordingSessionManager
+    let updater: SPUUpdater
+    @Environment(\.openWindow) private var openWindow
+
+    var body: some View {
+        if recordingSessionManager.isRecording {
+            Label("Recording", systemImage: "record.circle.fill")
+        } else if recordingSessionManager.isProcessing {
+            Label("Processing audio", systemImage: "hourglass")
+        }
+
+        Button {
+            MainWindowController.shared.show(using: openWindow)
+        } label: {
+            Label("Open Meetingnotes", systemImage: "macwindow")
+        }
+
+        Button {
+            LocalStorageManager.shared.showAudioFolderInFinder()
+        } label: {
+            Label("Show Audio Folder", systemImage: "folder")
+        }
+
+        Divider()
+
+        Button {
+            updater.checkForUpdates()
+        } label: {
+            Label("Check for Updates...", systemImage: "arrow.triangle.2.circlepath")
+        }
+        .keyboardShortcut("u")
+
+        Button {
+            NSApplication.shared.terminate(nil)
+        } label: {
+            Label("Quit Meetingnotes", systemImage: "power")
+        }
+        .keyboardShortcut("q")
+    }
+}
+
+@MainActor
+private final class MainWindowController: NSObject {
+    static let shared = MainWindowController()
+
+    private weak var window: NSWindow?
+
+    func configure(_ window: NSWindow) {
+        if self.window !== window {
+            if let previousWindow = self.window {
+                NotificationCenter.default.removeObserver(
+                    self,
+                    name: NSWindow.willMiniaturizeNotification,
+                    object: previousWindow
+                )
+            }
+            self.window = window
+            NotificationCenter.default.addObserver(
+                self,
+                selector: #selector(windowWillMiniaturize(_:)),
+                name: NSWindow.willMiniaturizeNotification,
+                object: window
+            )
+        }
+
+        if let minimizeButton = window.standardWindowButton(.miniaturizeButton) {
+            minimizeButton.target = self
+            minimizeButton.action = #selector(hideWindow(_:))
+        }
+    }
+
+    func show(using openWindow: OpenWindowAction) {
+        if let window {
+            window.makeKeyAndOrderFront(nil)
+        } else {
+            openWindow(id: "main")
+        }
+        NSApplication.shared.activate(ignoringOtherApps: true)
+    }
+
+    @objc private func hideWindow(_ sender: NSButton) {
+        sender.window?.orderOut(nil)
+    }
+
+    @objc private func windowWillMiniaturize(_ notification: Notification) {
+        guard let window = notification.object as? NSWindow else { return }
+        DispatchQueue.main.async {
+            window.deminiaturize(nil)
+            window.orderOut(nil)
+        }
+    }
+}
+
+private struct MainWindowConfigurator: NSViewRepresentable {
+    func makeNSView(context: Context) -> NSView {
+        let view = NSView()
+        configureWindow(for: view)
+        return view
+    }
+
+    func updateNSView(_ nsView: NSView, context: Context) {
+        configureWindow(for: nsView)
+    }
+
+    private func configureWindow(for view: NSView) {
+        DispatchQueue.main.async {
+            guard let window = view.window else { return }
+            MainWindowController.shared.configure(window)
+        }
     }
 }
 

meetingnotes/Models/Meeting.swift

@@ -48,30 +48,46 @@ struct TranscriptChunk: Codable, Identifiable, Hashable {
     let id: UUID
     let timestamp: Date
     let source: AudioSource
+    let speaker: Int?
     let text: String
     let isFinal: Bool
     
-    init(id: UUID = UUID(), timestamp: Date = Date(), source: AudioSource, text: String, isFinal: Bool = false) {
+    init(id: UUID = UUID(), timestamp: Date = Date(), source: AudioSource, speaker: Int? = nil, text: String, isFinal: Bool = false) {
         self.id = id
         self.timestamp = timestamp
         self.source = source
+        self.speaker = speaker
         self.text = text
         self.isFinal = isFinal
     }
+
+    var displayName: String {
+        if source == .mic { return "Me" }
+        if let speaker { return "Speaker \(speaker)" }
+        return source.displayName
+    }
 }
 
 struct CollapsedTranscriptChunk: Identifiable {
     let id: UUID
     let timestamp: Date
     let source: AudioSource
+    let speaker: Int?
     let combinedText: String
     
-    init(id: UUID = UUID(), timestamp: Date, source: AudioSource, combinedText: String) {
+    init(id: UUID = UUID(), timestamp: Date, source: AudioSource, speaker: Int? = nil, combinedText: String) {
         self.id = id
         self.timestamp = timestamp
         self.source = source
+        self.speaker = speaker
         self.combinedText = combinedText
     }
+
+    var displayName: String {
+        if source == .mic { return "Me" }
+        if let speaker { return "Speaker \(speaker)" }
+        return source.displayName
+    }
 }
 
 struct Meeting: Codable, Identifiable, Hashable {
@@ -82,6 +98,7 @@ struct Meeting: Codable, Identifiable, Hashable {
     var userNotes: String
     var generatedNotes: String
     var templateId: UUID?  // Add property to track per-meeting template
+    var recoveryAudioFolderName: String?
     // MARK: - Data versioning
     /// Version of this Meeting record on disk. Useful for migration.
     var dataVersion: Int
@@ -95,6 +112,7 @@ struct Meeting: Codable, Identifiable, Hashable {
          userNotes: String = "",
          generatedNotes: String = "",
          templateId: UUID? = nil,
+         recoveryAudioFolderName: String? = nil,
          dataVersion: Int = Meeting.currentDataVersion) {
         self.id = id
         self.date = date
@@ -103,6 +121,7 @@ struct Meeting: Codable, Identifiable, Hashable {
         self.userNotes = userNotes
         self.generatedNotes = generatedNotes
         self.templateId = templateId
+        self.recoveryAudioFolderName = recoveryAudioFolderName
         self.dataVersion = dataVersion
     }
     
@@ -112,7 +131,7 @@ struct Meeting: Codable, Identifiable, Hashable {
     var transcript: String {
         return transcriptChunks
             .filter { $0.isFinal }
-            .map { "[\($0.source.rawValue)] \($0.text)" }
+            .map { "[\($0.displayName)] \($0.text)" }
             .joined(separator: " ")
     }
     
@@ -121,7 +140,7 @@ struct Meeting: Codable, Identifiable, Hashable {
         let finalChunks = transcriptChunks.filter { $0.isFinal }
 
         return finalChunks.map { chunk in
-            "[\(TranscriptTimestampFormatter.string(from: chunk.timestamp))] \(chunk.source.copyPrefix): \(chunk.text)"
+            "[\(TranscriptTimestampFormatter.string(from: chunk.timestamp))] \(chunk.displayName): \(chunk.text)"
         }.joined(separator: "\n")
     }
     
@@ -132,6 +151,7 @@ struct Meeting: Codable, Identifiable, Hashable {
                 id: chunk.id,
                 timestamp: chunk.timestamp,
                 source: chunk.source,
+                speaker: chunk.speaker,
                 combinedText: chunk.text
             )
         }

meetingnotes/Models/Settings.swift

@@ -54,6 +54,11 @@ struct Settings: Codable {
         set { UserDefaultsManager.shared.muteDeckAPIPort = newValue }
     }
 
+    var audioRetentionDays: Int {
+        get { UserDefaultsManager.shared.audioRetentionDays }
+        set { UserDefaultsManager.shared.audioRetentionDays = newValue }
+    }
+
     // System prompt default loading
     static func defaultSystemPrompt() -> String {
         guard let path = Bundle.main.path(forResource: "DefaultSystemPrompt", ofType: "txt"),

meetingnotes/ProcessTap/ProcessTap.swift

@@ -5,7 +5,7 @@ import AVFoundation
 
 enum TapTarget {
     case singleProcess(AudioProcess)
-    case systemAudio(processObjectIDs: [AudioObjectID])
+    case systemAudio
 
     var displayName: String {
         switch self {
@@ -137,12 +137,12 @@ final class ProcessTap {
         case .singleProcess(let process):
             tapDescription = CATapDescription(stereoMixdownOfProcesses: [process.objectID])
             logger.debug("Configuring tap for single process objectID: \(process.objectID)")
-        case .systemAudio(let processObjectIDs):
-            if processObjectIDs.isEmpty {
-                logger.warning("System audio tap configured with an empty list of processObjectIDs. This might not capture any audio or behave unexpectedly.")
-            }
-            tapDescription = CATapDescription(monoMixdownOfProcesses: processObjectIDs)
-            logger.debug("Configuring tap for system audio output using \(processObjectIDs.count) explicit processes.")
+        case .systemAudio:
+            // Keep the HAL tap's buffer layout consistent with the default
+            // output stream. AudioManager performs the stereo-to-mono mix when
+            // it converts the captured audio to the 16 kHz transcription file.
+            tapDescription = CATapDescription(stereoGlobalTapButExcludeProcesses: [])
+            logger.debug("Configuring a stereo global system audio tap.")
         }
         
         tapDescription.uuid = UUID()

meetingnotes/Services/CoderAPIClient.swift

@@ -1,3 +1,4 @@
+import AVFoundation
 import Foundation
 
 struct CoderModel: Codable, Identifiable, Hashable {
@@ -20,6 +21,7 @@ struct CoderModel: Codable, Identifiable, Hashable {
 
     var supportsChat: Bool { capabilities.isEmpty || capabilities.contains("chat") }
     var supportsTranscription: Bool { capabilities.contains("audio_transcription") }
+    var supportsSpeakerDiarization: Bool { capabilities.contains("speaker_diarization") }
 }
 
 enum CoderAPIError: LocalizedError {
@@ -53,6 +55,7 @@ final class CoderAPIClient {
             let start: TimeInterval
             let end: TimeInterval
             let text: String
+            let speaker: Int?
         }
 
         let text: String
@@ -69,10 +72,25 @@ final class CoderAPIClient {
     }
 
     private struct TranscriptionResponse: Decodable {
+        struct Word: Decodable {
+            let word: String
+            let start: TimeInterval
+            let end: TimeInterval
+            let speaker: Int?
+        }
+
         let text: String
         let segments: [Transcription.Segment]?
+        let words: [Word]?
     }
 
+    private struct AudioChunk {
+        let url: URL
+        let offset: TimeInterval
+        let isTemporary: Bool
+    }
+
+    private let transcriptionChunkDuration: TimeInterval = 3 * 60
     private let transcriptionSession: URLSession
 
     private init() {
@@ -151,15 +169,85 @@ final class CoderAPIClient {
         }
     }
 
-    func transcribe(fileURL: URL, model: String, language: String = "en") async throws -> Transcription {
+    func transcribe(
+        fileURL: URL,
+        model: String,
+        language: String = "en",
+        diarization: Bool = false,
+        maxSpeakerCount: Int = 4
+    ) async throws -> Transcription {
         let selectedModel = model.trimmingCharacters(in: .whitespacesAndNewlines)
         guard !selectedModel.isEmpty else { throw CoderAPIError.missingModel("transcription") }
         let apiKey = try requiredAPIKey(KeychainHelper.shared.getCoderAPIKey() ?? "")
+        let chunks = try makeAudioChunks(from: fileURL, preserveSpeakerIdentity: diarization)
+        defer {
+            for chunk in chunks where chunk.isTemporary {
+                try? FileManager.default.removeItem(at: chunk.url)
+            }
+        }
+
+        var textParts: [String] = []
+        var segments: [Transcription.Segment] = []
+        var lastNormalizedText = ""
+        var consecutiveDuplicateCount = 0
+
+        for chunk in chunks {
+            let transcription = try await transcribeChunk(
+                chunk.url,
+                model: selectedModel,
+                language: language,
+                apiKey: apiKey,
+                diarization: diarization,
+                maxSpeakerCount: maxSpeakerCount
+            )
+            if transcription.segments.isEmpty {
+                let text = transcription.text.trimmingCharacters(in: .whitespacesAndNewlines)
+                if !text.isEmpty {
+                    textParts.append(text)
+                    segments.append(.init(start: chunk.offset, end: chunk.offset, text: text, speaker: nil))
+                }
+                continue
+            }
+
+            for segment in transcription.segments {
+                let text = segment.text.trimmingCharacters(in: .whitespacesAndNewlines)
+                guard !text.isEmpty else { continue }
+                let normalized = text.lowercased()
+                if normalized == lastNormalizedText {
+                    consecutiveDuplicateCount += 1
+                } else {
+                    lastNormalizedText = normalized
+                    consecutiveDuplicateCount = 1
+                }
+                guard consecutiveDuplicateCount <= 2 else { continue }
+                textParts.append(text)
+                segments.append(.init(
+                    start: segment.start + chunk.offset,
+                    end: segment.end + chunk.offset,
+                    text: text,
+                    speaker: segment.speaker
+                ))
+            }
+        }
+
+        return Transcription(text: textParts.joined(separator: "\n"), segments: segments)
+    }
+
+    private func transcribeChunk(
+        _ fileURL: URL,
+        model: String,
+        language: String,
+        apiKey: String,
+        diarization: Bool,
+        maxSpeakerCount: Int
+    ) async throws -> Transcription {
         let boundary = "Meetingnotes-\(UUID().uuidString)"
         let bodyURL = try makeMultipartBody(
             audioURL: fileURL,
-            model: selectedModel,
+            model: model,
             language: language,
+            diarization: diarization,
+            maxSpeakerCount: maxSpeakerCount,
             boundary: boundary
         )
         defer { try? FileManager.default.removeItem(at: bodyURL) }
@@ -175,7 +263,125 @@ final class CoderAPIClient {
         let (data, response) = try await transcriptionSession.upload(for: request, fromFile: bodyURL)
         try validate(response: response, data: data)
         let decoded = try JSONDecoder().decode(TranscriptionResponse.self, from: data)
-        return Transcription(text: decoded.text, segments: decoded.segments ?? [])
+        let segments = decoded.segments ?? segments(from: decoded.words ?? [])
+        return Transcription(text: decoded.text, segments: segments)
+    }
+
+    private func makeAudioChunks(from fileURL: URL, preserveSpeakerIdentity: Bool) throws -> [AudioChunk] {
+        let input = try AVAudioFile(forReading: fileURL)
+        let format = input.processingFormat
+        guard format.sampleRate > 0 else { throw CoderAPIError.invalidResponse }
+
+        let framesPerChunk = preserveSpeakerIdentity
+            ? max(1, input.length)
+            : AVAudioFramePosition(format.sampleRate * transcriptionChunkDuration)
+        var chunks: [AudioChunk] = []
+        var frameOffset: AVAudioFramePosition = 0
+
+        do {
+            while frameOffset < input.length {
+                let frameCount = min(framesPerChunk, input.length - frameOffset)
+                let chunkURL = FileManager.default.temporaryDirectory
+                    .appendingPathComponent("meetingnotes-transcription-\(UUID().uuidString).wav")
+                try writeAudioChunk(
+                    from: input,
+                    frameCount: frameCount,
+                    format: format,
+                    to: chunkURL
+                )
+                chunks.append(AudioChunk(
+                    url: chunkURL,
+                    offset: Double(frameOffset) / format.sampleRate,
+                    isTemporary: true
+                ))
+                frameOffset += frameCount
+            }
+            return chunks
+        } catch {
+            for chunk in chunks {
+                try? FileManager.default.removeItem(at: chunk.url)
+            }
+            throw error
+        }
+    }
+
+    private func writeAudioChunk(
+        from input: AVAudioFile,
+        frameCount: AVAudioFramePosition,
+        format: AVAudioFormat,
+        to outputURL: URL
+    ) throws {
+        let settings: [String: Any] = [
+            AVFormatIDKey: kAudioFormatLinearPCM,
+            AVSampleRateKey: format.sampleRate,
+            AVNumberOfChannelsKey: format.channelCount,
+            AVLinearPCMBitDepthKey: 16,
+            AVLinearPCMIsFloatKey: false,
+            AVLinearPCMIsBigEndianKey: false,
+            AVLinearPCMIsNonInterleaved: false
+        ]
+        let output = try AVAudioFile(
+            forWriting: outputURL,
+            settings: settings,
+            commonFormat: format.commonFormat,
+            interleaved: format.isInterleaved
+        )
+        var remaining = frameCount
+        while remaining > 0 {
+            let requestedFrames = AVAudioFrameCount(min(remaining, 8_192))
+            guard let buffer = AVAudioPCMBuffer(pcmFormat: format, frameCapacity: requestedFrames) else {
+                throw CoderAPIError.invalidResponse
+            }
+            try input.read(into: buffer, frameCount: requestedFrames)
+            guard buffer.frameLength > 0 else { break }
+            try output.write(from: buffer)
+            remaining -= AVAudioFramePosition(buffer.frameLength)
+        }
+    }
+
+    private func segments(from words: [TranscriptionResponse.Word]) -> [Transcription.Segment] {
+        var result: [Transcription.Segment] = []
+        var currentWords: [String] = []
+        var currentStart: TimeInterval?
+        var currentEnd: TimeInterval = 0
+        var currentSpeaker: Int?
+
+        func flush() {
+            guard let start = currentStart, !currentWords.isEmpty else { return }
+            result.append(.init(
+                start: start,
+                end: currentEnd,
+                text: currentWords.joined(separator: " "),
+                speaker: currentSpeaker
+            ))
+            currentWords.removeAll(keepingCapacity: true)
+            currentStart = nil
+            currentEnd = 0
+            currentSpeaker = nil
+        }
+
+        for word in words {
+            let text = word.word.trimmingCharacters(in: .whitespacesAndNewlines)
+            guard !text.isEmpty else { continue }
+            let speakerChanged = currentStart != nil && word.speaker != currentSpeaker
+            let longPause = currentStart != nil && word.start - currentEnd > 1.5
+            if speakerChanged || longPause { flush() }
+
+            if currentStart == nil {
+                currentStart = word.start
+                currentSpeaker = word.speaker
+            }
+            currentWords.append(text)
+            currentEnd = word.end
+
+            let sentenceEnded = text.last.map { ".!?".contains($0) } ?? false
+            let duration = currentEnd - (currentStart ?? currentEnd)
+            if currentWords.count >= 40 || (sentenceEnded && (currentWords.count >= 12 || duration >= 8)) {
+                flush()
+            }
+        }
+        flush()
+        return result
     }
 
     private func endpoint(baseURL: String, path: String) throws -> URL {
@@ -207,7 +413,14 @@ final class CoderAPIClient {
         }
     }
 
-    private func makeMultipartBody(audioURL: URL, model: String, language: String, boundary: String) throws -> URL {
+    private func makeMultipartBody(
+        audioURL: URL,
+        model: String,
+        language: String,
+        diarization: Bool,
+        maxSpeakerCount: Int,
+        boundary: String
+    ) throws -> URL {
         let bodyURL = FileManager.default.temporaryDirectory.appendingPathComponent("meetingnotes-upload-\(UUID().uuidString).body")
         _ = FileManager.default.createFile(atPath: bodyURL.path, contents: nil)
         let output = try FileHandle(forWritingTo: bodyURL)
@@ -219,7 +432,11 @@ final class CoderAPIClient {
         try write("--\(boundary)\r\nContent-Disposition: form-data; name=\"model\"\r\n\r\n\(model)\r\n")
         try write("--\(boundary)\r\nContent-Disposition: form-data; name=\"language\"\r\n\r\n\(language)\r\n")
         try write("--\(boundary)\r\nContent-Disposition: form-data; name=\"response_format\"\r\n\r\nverbose_json\r\n")
-        try write("--\(boundary)\r\nContent-Disposition: form-data; name=\"file\"; filename=\"\(audioURL.lastPathComponent)\"\r\nContent-Type: audio/mp4\r\n\r\n")
+        if diarization {
+            try write("--\(boundary)\r\nContent-Disposition: form-data; name=\"diarization\"\r\n\r\ntrue\r\n")
+            try write("--\(boundary)\r\nContent-Disposition: form-data; name=\"max_speaker_count\"\r\n\r\n\(maxSpeakerCount)\r\n")
+        }
+        try write("--\(boundary)\r\nContent-Disposition: form-data; name=\"file\"; filename=\"\(audioURL.lastPathComponent)\"\r\nContent-Type: audio/wav\r\n\r\n")
         let input = try FileHandle(forReadingFrom: audioURL)
         defer { try? input.close() }
         while let chunk = try input.read(upToCount: 1 << 20), !chunk.isEmpty {

meetingnotes/Services/LocalAPIServer.swift

@@ -286,6 +286,7 @@ private final class LocalRecordingController {
         }
 
         meeting.transcriptChunks = chunks
+        meeting.recoveryAudioFolderName = recordingManager.lastRecoveryAudioFolderName
         let templates = LocalStorageManager.shared.loadTemplates()
         if meeting.templateId == nil {
             meeting.templateId = LocalStorageManager.shared.preferredTemplateID(in: templates)

meetingnotes/ViewModels/MeetingViewModel.swift

@@ -25,6 +25,8 @@ class MeetingViewModel: ObservableObject {
     @Published private var recordingStateChanged = false // Trigger SwiftUI updates
     @Published var isValidatingKey = false // Indicates API key validation in progress
     @Published var isStartingRecording = false // Indicates recording start in progress
+    @Published var isRetryingTranscription = false
+    @Published private(set) var recoveryAudioFolderURL: URL?
     
     // Computed property to determine if Generate button should animate
     var shouldAnimateGenerateButton: Bool {
@@ -44,7 +46,13 @@ class MeetingViewModel: ObservableObject {
     }
 
     var isProcessing: Bool {
-        return recordingSessionManager.isProcessing && recordingSessionManager.activeMeetingId == meeting.id
+        return isRetryingTranscription ||
+            (recordingSessionManager.isProcessing && recordingSessionManager.activeMeetingId == meeting.id)
+    }
+
+    var canRetryTranscription: Bool {
+        recoveryAudioFolderURL != nil &&
+            !isRecording && !isProcessing && !isStartingRecording && !isValidatingKey
     }
     @Published var selectedTab: MeetingViewTab = .transcript  // Default to transcript tab
 
@@ -76,6 +84,7 @@ class MeetingViewModel: ObservableObject {
         
         // Load templates and selected template
         loadTemplates()
+        refreshRecoveryAudioFolder()
         // Observe template selection: save to meeting and regenerate notes on changes (skip initial)
         $selectedTemplateId
             .dropFirst()
@@ -205,6 +214,8 @@ class MeetingViewModel: ObservableObject {
         Task {
             let chunks = await recordingSessionManager.stopRecording()
             meeting.transcriptChunks = chunks
+            meeting.recoveryAudioFolderName = recordingSessionManager.lastRecoveryAudioFolderName
+            refreshRecoveryAudioFolder()
             saveMeeting()
             if !meeting.formattedTranscript.isEmpty {
                 await generateNotes()
@@ -213,6 +224,46 @@ class MeetingViewModel: ObservableObject {
         }
     }
 
+    func retryTranscription() {
+        guard let recoveryAudioFolderURL, canRetryTranscription else { return }
+
+        isRetryingTranscription = true
+        errorMessage = nil
+        Task {
+            defer { isRetryingTranscription = false }
+            do {
+                let chunks = try await AudioManager.shared.transcribeRecoveryAudio(
+                    in: recoveryAudioFolderURL,
+                    captureStartedAt: meeting.date
+                )
+                meeting.transcriptChunks = chunks
+                meeting.recoveryAudioFolderName = recoveryAudioFolderURL.lastPathComponent
+                selectedTab = .transcript
+
+                guard saveMeeting() else {
+                    throw CocoaError(.fileWriteUnknown)
+                }
+
+                await generateNotes()
+            } catch {
+                errorMessage = error.localizedDescription
+                print("Retry transcription failed: \(error)")
+            }
+        }
+    }
+
+    private func refreshRecoveryAudioFolder() {
+        recoveryAudioFolderURL = LocalStorageManager.shared.findRecoveryAudioFolder(for: meeting)
+        if let recoveryAudioFolderURL {
+            meeting.recoveryAudioFolderName = recoveryAudioFolderURL.lastPathComponent
+        }
+    }
+
+    func showAudioInFinder() {
+        guard let recoveryAudioFolderURL else { return }
+        LocalStorageManager.shared.showAudioFolderInFinder(recoveryAudioFolderURL)
+    }
+    
     func loadTemplates() {
         templates = LocalStorageManager.shared.loadTemplates()
 
@@ -284,14 +335,16 @@ class MeetingViewModel: ObservableObject {
         }
     }
     
-    func saveMeeting() {
-        if isDeleted { return }
+    @discardableResult
+    func saveMeeting() -> Bool {
+        if isDeleted { return false }
         print("💾 Saving meeting: \(meeting.id)")
         let success = LocalStorageManager.shared.saveMeeting(meeting)
         print("💾 Save result: \(success ? "SUCCESS" : "FAILED")")
         if success {
             NotificationCenter.default.post(name: .meetingSaved, object: meeting)
         }
+        return success
     }
     
     func copyCurrentTabContent() {

meetingnotes/ViewModels/SettingsViewModel.swift

@@ -71,6 +71,7 @@ class SettingsViewModel: ObservableObject {
         // via computed properties when they're modified
         let coderSaved = KeychainHelper.shared.saveCoderAPIKey(settings.coderAPIKey)
         LocalAPIServer.shared.applyConfiguration()
+        LocalStorageManager.shared.purgeExpiredAudioFolders()
 
         if showMessage {
             if coderSaved {

meetingnotes/Views/MeetingListView.swift

@@ -208,12 +208,12 @@ struct CollapsedTranscriptChunkView: View {
                     .font(.caption)
                     .foregroundColor(chunk.source == .mic ? .blue : .orange)
                 
-                Text(chunk.source.displayName)
+                Text(chunk.displayName)
                     .font(.caption)
                     .fontWeight(.medium)
                     .foregroundColor(chunk.source == .mic ? .blue : .orange)
             }
-            .frame(width: 50, alignment: .leading)
+            .frame(width: 78, alignment: .leading)
             
             // Transcript text
             Text(chunk.combinedText)
@@ -259,6 +259,23 @@ struct MeetingDetailContentView: View {
                     
                     // Ellipsis menu
                     Menu {
+                        if viewModel.recoveryAudioFolderURL != nil {
+                            Button {
+                                viewModel.retryTranscription()
+                            } label: {
+                                Label("Retry Transcription", systemImage: "arrow.clockwise")
+                            }
+                            .disabled(!viewModel.canRetryTranscription)
+
+                            Button {
+                                viewModel.showAudioInFinder()
+                            } label: {
+                                Label("Show Audio in Finder", systemImage: "folder")
+                            }
+
+                            Divider()
+                        }
+
                         Button("Delete Meeting", role: .destructive) {
                             showDeleteAlert = true
                         }

meetingnotes/Views/SettingsView.swift

@@ -58,6 +58,12 @@ struct SettingsView: View {
                                 Text(model.displayName).tag(model.id)
                             }
                         }
+
+                        if viewModel.coderModels.first(where: { $0.id == viewModel.settings.transcriptionModel })?.supportsSpeakerDiarization == true {
+                            Label("Remote participants are labeled Speaker 1–4; your microphone is labeled Me.", systemImage: "person.2.wave.2")
+                                .font(.caption)
+                                .foregroundColor(.secondary)
+                        }
                     }
 
                     Text("The token is stored locally in Keychain. Audio and note generation are sent only to this Coder service.")
@@ -128,6 +134,23 @@ struct SettingsView: View {
                     Text("Meeting Storage")
                         .font(.headline)
 
+                    LabeledContent("Audio retention") {
+                        Stepper(
+                            value: $viewModel.settings.audioRetentionDays,
+                            in: 1...365
+                        ) {
+                            Text("\(viewModel.settings.audioRetentionDays) \(viewModel.settings.audioRetentionDays == 1 ? "day" : "days")")
+                                .monospacedDigit()
+                                .frame(minWidth: 70, alignment: .trailing)
+                        }
+                    }
+
+                    Button {
+                        LocalStorageManager.shared.showAudioFolderInFinder()
+                    } label: {
+                        Label("Show Audio Folder", systemImage: "folder")
+                    }
+
                     Button {
                         showingMeetingImporter = true
                     } label: {