fix: preserve system audio resampler state

Meetingnotes.xcodeproj/project.pbxproj

@@ -276,7 +276,7 @@
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 25;
+				CURRENT_PROJECT_VERSION = 28;
 				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 = 1.1.13;
+				MARKETING_VERSION = 1.1.16;
 				ONLY_ACTIVE_ARCH = NO;
 				OTHER_SWIFT_FLAGS = "$(inherited) -D ENABLE_TCC_SPI";
 				PRODUCT_BUNDLE_IDENTIFIER = net.jamesbone.meetingnotes;
@@ -312,7 +312,7 @@
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 25;
+				CURRENT_PROJECT_VERSION = 28;
 				DEVELOPMENT_ASSET_PATHS = "\"meetingnotes/Preview Content\"";
 				DEVELOPMENT_TEAM = G9LVHZAJNX;
 				ENABLE_HARDENED_RUNTIME = YES;
@@ -326,7 +326,7 @@
 					"@executable_path/../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 15.0;
-				MARKETING_VERSION = 1.1.13;
+				MARKETING_VERSION = 1.1.16;
 				ONLY_ACTIVE_ARCH = YES;
 				OTHER_SWIFT_FLAGS = "$(inherited) -D ENABLE_TCC_SPI";
 				PRODUCT_BUNDLE_IDENTIFIER = net.jamesbone.meetingnotes;

meetingnotes/Managers/AudioManager.swift

@@ -35,6 +35,7 @@ final class AudioManager: NSObject, ObservableObject {
     
     private var audioEngine = AVAudioEngine()
     private var sessionID = UUID()
+    private var meetingID = UUID()
     private var processTap: ProcessTap?
     private let permission = AudioRecordingPermission()
     private let tapQueue = DispatchQueue(label: "io.meetingnotes.audiotap", qos: .userInitiated)
@@ -59,11 +60,12 @@ final class AudioManager: NSObject, ObservableObject {
         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()
@@ -76,7 +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
@@ -97,16 +99,17 @@ final class AudioManager: NSObject, ObservableObject {
         )
         transcriptChunks = updated
         let completedFiles = files.compactMap { $0 }
-        if failures.isEmpty {
+        let audioFolder = preserveAudioFiles(completedFiles, meetingID: completedMeetingID)
-            lastRecoveryAudioFolderName = nil
+        lastRecoveryAudioFolderName = audioFolder?.lastPathComponent
-            removeAudioFiles(completedFiles)
+        if !failures.isEmpty {
-        } else {
+            let retentionDays = UserDefaultsManager.shared.audioRetentionDays
-            let recoveryFolder = preserveAudioFiles(completedFiles, sessionID: completedSessionID)
+            let retentionUnit = retentionDays == 1 ? "day" : "days"
-            lastRecoveryAudioFolderName = recoveryFolder?.lastPathComponent
+            let recoveryMessage = audioFolder == nil
-            let recoveryMessage = recoveryFolder == nil
                 ? " The audio remains in the app's temporary folder."
-                : " Audio was saved in Documents/Meetingnotes-Recovery/\(completedSessionID.uuidString)."
+                : " 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
     }
@@ -341,12 +344,14 @@ 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,
+            guard let self else { return }
-                  let converter = AVAudioConverter(from: inputFormat, to: targetFormat) 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,
@@ -502,29 +507,8 @@ final class AudioManager: NSObject, ObservableObject {
         for url in urls { try? FileManager.default.removeItem(at: url) }
     }
 
-    private func preserveAudioFiles(_ urls: [URL], sessionID: UUID) -> URL? {
+    private func preserveAudioFiles(_ urls: [URL], meetingID: UUID) -> URL? {
-        guard !urls.isEmpty,
+        LocalStorageManager.shared.preserveAudioFiles(urls, for: meetingID)
-              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 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 {
@@ -28,7 +29,7 @@ class LocalStorageManager {
         // Create templates subdirectory
         templatesDirectory = documentsDirectory.appendingPathComponent("Templates")
 
-        recoveryDirectory = documentsDirectory.appendingPathComponent("Meetingnotes-Recovery")
+        recoveryDirectory = documentsDirectory.appendingPathComponent("Meetingnotes Audio")
         
         // Ensure directories exist
         try? FileManager.default.createDirectory(at: meetingsDirectory,
@@ -37,6 +38,8 @@ class LocalStorageManager {
                                                withIntermediateDirectories: true)
         try? FileManager.default.createDirectory(at: recoveryDirectory,
                                                withIntermediateDirectories: true)
+        migrateLegacyRecoveryAudio()
+        purgeExpiredAudioFolders()
     }
     
     // MARK: - Meeting Management
@@ -151,6 +154,67 @@ 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,
@@ -245,6 +309,22 @@ class LocalStorageManager {
         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] {

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
@@ -94,4 +95,12 @@ 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

@@ -46,6 +46,10 @@ struct MeetingnotesApp: App {
         .commands {
             CommandGroup(after: .appInfo) {
                 CheckForUpdatesView(updater: updaterController.updater)
+                Divider()
+                Button("Show Audio Folder") {
+                    LocalStorageManager.shared.showAudioFolderInFinder()
+                }
             }
         }
 
@@ -79,6 +83,12 @@ private struct MeetingnotesMenu: View {
             Label("Open Meetingnotes", systemImage: "macwindow")
         }
 
+        Button {
+            LocalStorageManager.shared.showAudioFolderInFinder()
+        } label: {
+            Label("Show Audio Folder", systemImage: "folder")
+        }
+
         Divider()
 
         Button {

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/ViewModels/MeetingViewModel.swift

@@ -244,10 +244,6 @@ class MeetingViewModel: ObservableObject {
                     throw CocoaError(.fileWriteUnknown)
                 }
 
-                LocalStorageManager.shared.deleteRecoveryAudioFolder(recoveryAudioFolderURL)
-                meeting.recoveryAudioFolderName = nil
-                self.recoveryAudioFolderURL = nil
-                saveMeeting()
                 await generateNotes()
             } catch {
                 errorMessage = error.localizedDescription
@@ -263,6 +259,11 @@ class MeetingViewModel: ObservableObject {
         }
     }
 
+    func showAudioInFinder() {
+        guard let recoveryAudioFolderURL else { return }
+        LocalStorageManager.shared.showAudioFolderInFinder(recoveryAudioFolderURL)
+    }
+    
     func loadTemplates() {
         templates = LocalStorageManager.shared.loadTemplates()
 

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

@@ -267,6 +267,12 @@ struct MeetingDetailContentView: View {
                             }
                             .disabled(!viewModel.canRetryTranscription)
 
+                            Button {
+                                viewModel.showAudioInFinder()
+                            } label: {
+                                Label("Show Audio in Finder", systemImage: "folder")
+                            }
+
                             Divider()
                         }
 

meetingnotes/Views/SettingsView.swift

@@ -128,6 +128,23 @@ 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: {