feat(voice): wire existing mic button to live speech recognition

The mic icon in AddTaskSheet was a static Image with no action and no
speech service behind it. Full implementation:

SpeechRecognizer.swift (new):
- @MainActor ObservableObject wrapping SFSpeechRecognizer + AVAudioEngine
- Requests speech recognition then microphone permission in sequence
- Streams partial results into @Published transcript; final result stops engine
- Suppresses transient error 301 (no speech detected)
- reset() cleans up on sheet dismiss
- [VOICE] log trail at every step: tapped → granted → started → transcript → saved

TodayView.swift — AddTaskSheet:
- @StateObject private var speech = SpeechRecognizer()
- onChange(speech.transcript) writes transcript to rawText (task field)
- Mic Image → Button { speech.toggle() } with mic.fill + pulse animation while recording
- .safeAreaInset shows a red dismissible error banner on permission denial
- submit() stops recording before saving; logs task title
- .onDisappear resets speech state

project.yml:
- NSMicrophoneUsageDescription
- NSSpeechRecognitionUsageDescription

Co-Authored-By: Kutesir <tqwyy79vzn@privaterelay.appleid.com>

KisaniCal.xcodeproj/project.pbxproj

@@ -13,6 +13,7 @@
 		13E4B9854F595394FC9D5912 /* ContentView.swift in Sources */ = {isa = PBXBuildFile; fileRef = BC5E179A9189B0A8C3F856F6 /* ContentView.swift */; };
 		1A22EE21460821170E44B1DF /* ExerciseModels.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5722CC4B59E3939724142710 /* ExerciseModels.swift */; };
 		205846F9651EDCE0D8207358 /* TaskLiveActivity.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0513EB8C7F6B6853B9E93E09 /* TaskLiveActivity.swift */; };
+		2885D000426D063F2125804C /* SpeechRecognizer.swift in Sources */ = {isa = PBXBuildFile; fileRef = 86906905A4FA7A2384B3E24E /* SpeechRecognizer.swift */; };
 		2CD2313EDC4BFCE6E89C6787 /* AppGroup.swift in Sources */ = {isa = PBXBuildFile; fileRef = AF905C574F34B4EE51A8D21E /* AppGroup.swift */; };
 		32C63D81925FBFE51CAE1FB7 /* TaskActivityAttributes.swift in Sources */ = {isa = PBXBuildFile; fileRef = FEEB07EB89E89383C32ADB34 /* TaskActivityAttributes.swift */; };
 		3AD7F62D231DCFFFFCB31649 /* TutorialManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = 01A27D42E141DC056D32C1A3 /* TutorialManager.swift */; };
@@ -114,6 +115,7 @@
 		74FAA2B41FCEBC7E3F156F0F /* CalendarGridTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CalendarGridTests.swift; sourceTree = "<group>"; };
 		768D4E314252E2A90A06CCF2 /* AddExerciseSheet.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AddExerciseSheet.swift; sourceTree = "<group>"; };
 		7A9D47B284FD6A217AEF813B /* WenzaWatch.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = WenzaWatch.app; sourceTree = BUILT_PRODUCTS_DIR; };
+		86906905A4FA7A2384B3E24E /* SpeechRecognizer.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SpeechRecognizer.swift; sourceTree = "<group>"; };
 		89550F2CD19B950CCC6AD37F /* AuthManager.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AuthManager.swift; sourceTree = "<group>"; };
 		8DC8687EA2FBA9FB2EEE51C6 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist; path = Info.plist; sourceTree = "<group>"; };
 		8E7FC6446D5C5B2A2D9387DA /* KisaniCalWidgets.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = KisaniCalWidgets.entitlements; sourceTree = "<group>"; };
@@ -279,6 +281,7 @@
 				0506183945D16EC443A69651 /* LiveActivityManager.swift */,
 				93D045FE3DEB1D22D908A29F /* NotificationManager.swift */,
 				326B77A7B317A7DB44E13EA5 /* ShortcutHandler.swift */,
+				86906905A4FA7A2384B3E24E /* SpeechRecognizer.swift */,
 				FEEB07EB89E89383C32ADB34 /* TaskActivityAttributes.swift */,
 				01A27D42E141DC056D32C1A3 /* TutorialManager.swift */,
 			);
@@ -464,6 +467,7 @@
 				A3B2D6622A2EE35C8D5A3C9B /* SettingsView.swift in Sources */,
 				8BE9D3D650B0F06169EC7048 /* SharedComponents.swift in Sources */,
 				497732557745AE9BDA44FB2F /* ShortcutHandler.swift in Sources */,
+				2885D000426D063F2125804C /* SpeechRecognizer.swift in Sources */,
 				6921CB73A3257502FF778381 /* SplashView.swift in Sources */,
 				32C63D81925FBFE51CAE1FB7 /* TaskActivityAttributes.swift in Sources */,
 				EE7BCEB45B1F0B91C9D3C1D2 /* TaskContextMenu.swift in Sources */,
@@ -522,6 +526,8 @@
 				INFOPLIST_KEY_NSCalendarsUsageDescription = "Wenza shows your calendar events alongside tasks.";
 				INFOPLIST_KEY_NSHealthShareUsageDescription = "Wenza reads your steps, energy, heart rate, and workouts to show health stats on your dashboard.";
 				INFOPLIST_KEY_NSHealthUpdateUsageDescription = "Wenza saves workouts you complete to the Health app.";
+				INFOPLIST_KEY_NSMicrophoneUsageDescription = "Wenza uses your microphone to convert speech into task text.";
+				INFOPLIST_KEY_NSSpeechRecognitionUsageDescription = "Wenza uses speech recognition so you can add tasks by voice.";
 				INFOPLIST_KEY_NSSupportsLiveActivities = YES;
 				INFOPLIST_KEY_UIApplicationSceneManifest_Generation = YES;
 				INFOPLIST_KEY_UILaunchStoryboardName = LaunchScreen;
@@ -786,6 +792,8 @@
 				INFOPLIST_KEY_NSCalendarsUsageDescription = "Wenza shows your calendar events alongside tasks.";
 				INFOPLIST_KEY_NSHealthShareUsageDescription = "Wenza reads your steps, energy, heart rate, and workouts to show health stats on your dashboard.";
 				INFOPLIST_KEY_NSHealthUpdateUsageDescription = "Wenza saves workouts you complete to the Health app.";
+				INFOPLIST_KEY_NSMicrophoneUsageDescription = "Wenza uses your microphone to convert speech into task text.";
+				INFOPLIST_KEY_NSSpeechRecognitionUsageDescription = "Wenza uses speech recognition so you can add tasks by voice.";
 				INFOPLIST_KEY_NSSupportsLiveActivities = YES;
 				INFOPLIST_KEY_UIApplicationSceneManifest_Generation = YES;
 				INFOPLIST_KEY_UILaunchStoryboardName = LaunchScreen;