Release v4.3: speak status line (Tolk) + Logging tab with housekeeping

- New screen-reader hotkey "Speak the RemSound status information" (issue #13):
  reads the status line aloud through the active screen reader via Tolk, fires from
  anywhere (system-wide), unset by default. Built behind an IScreenReaderOutput seam
  so a future build can swap Tolk for Prism on Windows 10+ without touching callers.
  Tolk DLLs vendored under tolk/ and shipped next to the exe.
- New Logging tab in Preferences: Enable logs + Write logs now moved there, plus
  opt-in startup "warn if logs folder exceeds N MB" and "delete logs older than N days",
  and a "Delete all logs" button (Yes/No confirm). New LogMaintenance helper + AppConfig
  settings drive it.
- Manual (readme.html + regenerated MANUAL.md), About changelog and RELEASE_NOTES
  updated in plain English; csproj <Version> bumped to 4.3.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/RemSound.Core/AppConfig.cs

@@ -128,6 +128,25 @@ public sealed class AppConfig
     /// ticks <em>Enable logs</em> in the Preferences dialog.</summary>
     public bool LoggingEnabled { get; set; }
 
+    /// <summary>If true, RemSound checks the total size of the <c>logs\</c> folder at startup and,
+    /// when it exceeds <see cref="LogsFolderWarnThresholdMb"/> megabytes, shows a one-time warning so
+    /// the user can prune or clear it. Off by default (opt-in, like the other behaviour toggles).
+    /// Machine-local — a "watch my disk on this box" decision, not a per-profile audio setting.</summary>
+    public bool WarnIfLogsFolderExceeds { get; set; }
+
+    /// <summary>The size threshold in megabytes for <see cref="WarnIfLogsFolderExceeds"/>. Default
+    /// 100 MB. Only consulted when that flag is on.</summary>
+    public int LogsFolderWarnThresholdMb { get; set; } = 100;
+
+    /// <summary>If true, RemSound deletes log files older than <see cref="PruneOldLogsDays"/> days
+    /// from the <c>logs\</c> folder at startup. Off by default (opt-in). The currently-open log file
+    /// is never a candidate (it's today's). Machine-local.</summary>
+    public bool PruneOldLogs { get; set; }
+
+    /// <summary>Age in days for <see cref="PruneOldLogs"/>: log files last written more than this many
+    /// days ago are deleted at startup. Range 1–30, default 14. Only consulted when that flag is on.</summary>
+    public int PruneOldLogsDays { get; set; } = 14;
+
     /// <summary>If non-null and a profile with this title exists, RemSound skips the
     /// startup profile picker and loads this profile directly. Combine with
     /// <see cref="StartMinimised"/> + the Windows auto-start registry entry

src/RemSound.Core/Profile.cs

@@ -212,6 +212,9 @@ public sealed class Profile
     /// <summary>Global hotkey that opens the Quick profile switch popup — a list of all profiles you
     /// can arrow through and press Enter to switch to, from anywhere in Windows. Unset by default.</summary>
     public HotkeyRecord? QuickProfileSwitchHotkey { get; set; }
+    /// <summary>Optional global hotkey that speaks the connection status line aloud through the active
+    /// screen reader (issue #13). Unset by default. Screen-reader specific.</summary>
+    public HotkeyRecord? SpeakStatusLineHotkey { get; set; }
     /// <summary>When true, this machine honours incoming Control packets from connected
     /// peers — adjusts the local volume slider or toggles mute. Default false: receiving
     /// remote control is opt-in even though the audio allow-list already gates who's

src/RemSound.Core/RemSoundSettingsStore.cs

@@ -144,6 +144,16 @@ public sealed class RemSoundSettingsStore
         Save(s);
     }
 
+    public HotkeyInfo LoadSpeakStatusLineHotkey() =>
+        Try(() => Load()?.SpeakStatusLineHotkey?.ToHotkeyInfo()) ?? HotkeyInfo.Unset;
+
+    public void SaveSpeakStatusLineHotkey(HotkeyInfo hotkey)
+    {
+        var s = Load() ?? new Settings();
+        s.SpeakStatusLineHotkey = HotkeySetting.From(hotkey);
+        Save(s);
+    }
+
     public bool LoadAcceptRemoteVolumeCommands(bool defaultValue = false) =>
         Try(() => Load()?.AcceptRemoteVolumeCommands) ?? defaultValue;
 
@@ -593,6 +603,7 @@ public sealed class RemSoundSettingsStore
             SystemVolumeDownHotkey = profile.SystemVolumeDownHotkey is null ? null : HotkeySettingFromRecord(profile.SystemVolumeDownHotkey),
             SystemMuteToggleHotkey = profile.SystemMuteToggleHotkey is null ? null : HotkeySettingFromRecord(profile.SystemMuteToggleHotkey),
             QuickProfileSwitchHotkey = profile.QuickProfileSwitchHotkey is null ? null : HotkeySettingFromRecord(profile.QuickProfileSwitchHotkey),
+            SpeakStatusLineHotkey = profile.SpeakStatusLineHotkey is null ? null : HotkeySettingFromRecord(profile.SpeakStatusLineHotkey),
             AcceptRemoteVolumeCommands = profile.AcceptRemoteVolumeCommands,
             MaxLatencyMs = profile.MaxLatencyMs,
             Codec = profile.Codec,
@@ -649,6 +660,7 @@ public sealed class RemSoundSettingsStore
         profile.SystemVolumeDownHotkey = s.SystemVolumeDownHotkey is null ? null : HotkeyRecordFromSetting(s.SystemVolumeDownHotkey);
         profile.SystemMuteToggleHotkey = s.SystemMuteToggleHotkey is null ? null : HotkeyRecordFromSetting(s.SystemMuteToggleHotkey);
         profile.QuickProfileSwitchHotkey = s.QuickProfileSwitchHotkey is null ? null : HotkeyRecordFromSetting(s.QuickProfileSwitchHotkey);
+        profile.SpeakStatusLineHotkey = s.SpeakStatusLineHotkey is null ? null : HotkeyRecordFromSetting(s.SpeakStatusLineHotkey);
         if (s.AcceptRemoteVolumeCommands is bool arvc) profile.AcceptRemoteVolumeCommands = arvc;
         if (s.MaxLatencyMs is int ml) profile.MaxLatencyMs = ml;
         if (s.Codec is AudioTransportCodec c) profile.Codec = c;
@@ -716,6 +728,7 @@ public sealed class RemSoundSettingsStore
         public HotkeySetting? SystemVolumeDownHotkey { get; set; }
         public HotkeySetting? SystemMuteToggleHotkey { get; set; }
         public HotkeySetting? QuickProfileSwitchHotkey { get; set; }
+        public HotkeySetting? SpeakStatusLineHotkey { get; set; }
         public bool? AcceptRemoteVolumeCommands { get; set; }
         public int? MaxLatencyMs { get; set; }
         public AudioTransportCodec? Codec { get; set; }