Release KSwitcher v0.6.77 with local pencil smoothing

CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.24)
-project(KSwitcher VERSION 0.6.74 LANGUAGES CXX RC)
+project(KSwitcher VERSION 0.6.77 LANGUAGES CXX RC)
 if(NOT WIN32)
   message(FATAL_ERROR "KSwitcher uses native Windows APIs")
 endif()

LAN-PREVIEW.md

@@ -12,8 +12,10 @@ with all online paired computers: history and the active clipboard.
 In **Settings → Computers → Manage computers…**, select an online paired
 computer and choose **Send file…**. Both computers need a build with file transfer.
 Files up to 16 MiB travel over encrypted LAN. On the destination, open
-**Incoming files…** to save or discard each file. Pending files are held in
-memory until saved, discarded, or KSwitcher closes.
+**Incoming files…** to save or discard each file. The save dialog suggests the
+original filename. KSwitcher shows a Windows notification when a file is ready
+to save, and its tray tooltip shows the pending count. Pending files are held
+in memory until saved, discarded, or KSwitcher closes.
 
 To retrieve the current or rotated diagnostic log, enable **Allow paired
 computers to download diagnostic logs** on the computer that owns the logs.
@@ -28,7 +30,7 @@ Codex's `~/.codex/config.toml`. It starts the MCP server over stdio with the
 absolute path to `KSwitcher.Config.exe` and the `--mcp` argument.
 `list_log_computers` returns paired computer IDs and availability.
 `read_diagnostic_log` reads the latest 100 lines by default (1–500 with
-`lines`). Set `previous` to read the rotated log. Omit `peer` for the
+`lines`). Use `offset` to skip newer lines and page backward. Set `previous` to read the rotated log. Omit `peer` for the
 local log or pass a paired computer ID for a remote log. Remote reads need
 the local resident process running and log downloads enabled on the remote PC.
 

README.md

@@ -609,9 +609,9 @@ Windows exposes them; selection offsets are available for native EDIT controls a
 marked unavailable for other editors. Input interruptions identify keyboard, mouse, settings
 or layout-refresh events during an operation. Failed selection verification includes the expected
 selection and actual copied text in the operation details, without implying that a paste occurred.
-Only problem operations write a structured summary to `kswitcher.log`, with their preceding
+Problem operations write a structured summary to `kswitcher.log`, with their preceding
 context. Successful operations stay in that bounded memory buffer and are included only when
-a subsequent problem flushes it; they do not create separate rows. Flushed context is discarded. Ordinary application
+a subsequent problem flushes it. Verified pastes that take at least two seconds also write a summary without the copied text. Flushed context is discarded. Ordinary application
 errors are also logged when logging is enabled. This works in normal Release builds.
 Incident context contains tracked physical input, the expected word, copied text, conversion result,
 and layout IDs, correlated by request ID even when verification fails. Text fields use quoted,
@@ -833,13 +833,13 @@ default and require the main **Automatic correction (experimental)** checkbox to
 
 - **Use custom replacements**: enter one `typo=correction` pair per line, for example
   `првиіт=привіт` or `helo=hello`. Entries are normalized to lowercase; duplicate source words
-  are rejected. The typo must contain 1–32 letters. The correction may contain several words
+  are rejected. The typo must be one word of 1–32 characters with at least one letter. It can contain digits and internal apostrophes. The correction may contain several words
   separated by single spaces, for example `мамамила=мама мила`, up to 32 characters including
   spaces. Corrections also allow apostrophes (`'`, `’`, `ʼ`) between letters, for example
   `ревю=рев'ю`. Both sides must use the same supported language, without other punctuation; leading,
   trailing and repeated spaces are not allowed. Explicit pairs take priority over dictionary recognition, including
   already valid words, and do not require dictionary membership or satisfy the frequency limit.
-  Update every synchronizing PC to v0.6.60 or newer before sharing apostrophe pairs; older clients reject them.
+  Update every synchronizing PC to v0.6.75 before sharing pairs with digits or apostrophes in the typo.
 - **Correct spelling typos using dictionaries**: checks unknown words in the current language
   after no layout correction is found. It accepts exactly one dictionary candidate reachable
   by inserting, deleting or replacing one letter, or swapping two adjacent letters. Both input

Release/README.md

@@ -1,5 +1,45 @@
 # Latest Windows release
 
+## v0.6.77 — 2026-11-13
+
+The screenshot editor remembers the local pencil smoothing default across
+restarts. Adjust the slider with no pencil stroke selected, or use **Apply to
+all**, to save the value for new strokes. Adjusting a selected stroke changes
+only that stroke.
+
+**Українською.** Редактор скріншотів зберігає типове згладжування олівця на
+цьому ПК та відновлює його після перезапуску. Змініть повзунок без виділеного
+штриха олівця або натисніть **Apply to all**, щоб запам’ятати значення для
+нових штрихів. Зміна виділеного штриха впливає лише на нього.
+
+## v0.6.76 — 2026-11-13
+
+Incoming LAN files suggest their original filename when saved. KSwitcher shows
+a Windows tray notification when a file is ready to save, and the tray tooltip
+shows the pending count.
+
+**Українською.** Під час збереження вхідного LAN-файлу пропонується його
+оригінальна назва. KSwitcher показує сповіщення в треї, коли файл готовий
+до збереження. Підказка іконки показує кількість файлів у черзі.
+
+## v0.6.75 — 2026-11-13
+
+Conversion cancels earlier when input changes and skips restoring an untouched
+clipboard. Diagnostic records identify the active conversion behind `busy`,
+separate clipboard and paste verification timings, and retain a text-free
+summary of verified pastes that take at least two seconds. MCP log reads
+support `offset` to page backward.
+
+**Українською.** Конвертація раніше скасовується після зміни вводу й пропускає
+відновлення буфера, якщо його не змінювала. Діагностика показує активну спробу
+для `busy`, окремий час роботи з буфером і перевірки вставки, а також зберігає
+підсумок перевірених вставок від двох секунд без скопійованого тексту. У MCP
+параметр `offset` дає змогу читати старіші рядки.
+
+Explicit replacements now accept digits and internal apostrophes in the source word, for example нав1язав=навʼязав. Invalid entries identify the offending pair.
+
+**Українською.** Явні заміни підтримують цифри й внутрішні апострофи у вихідному слові, наприклад нав1язав=навʼязав. Повідомлення про помилку показує проблемну пару.
+
 ## v0.6.74 — 2026-11-13
 
 - Send files up to 16 MiB to a selected paired PC over encrypted LAN. Save or discard them from **Incoming files**.

Release/SHA256SUMS.txt

@@ -1 +1 @@
-d7f2a0667a5dd3e2bc05b2a3c1900eaddd356343f03f53747fdfd4334ca74b3f  KSwitcher-win-x64.zip
+51d95639527590b36453a5ef485532a7d2135950222fa197eb431a5309f1a45c  KSwitcher-win-x64.zip

Release/release-files.json

@@ -1,20 +1,20 @@
 {
-  "schema": 1,
+  "version": "0.6.77",
   "files": [
     {
       "path": "KSwitcher.exe",
-      "size": 2243072,
-      "sha256": "da74c9b6986235d95a66d2f1220d436e83e43ce5e73f5132d7c854c823e559fd"
+      "size": 2249216,
+      "sha256": "f1c79d337d746efcda03946cc833b7b5588ef4e739f1dff7d3afa15d0465469f"
     },
     {
       "path": "KSwitcher.Config.exe",
-      "size": 2249216,
-      "sha256": "0c290ec58befca6ad0b28b9a5d6a5c11b9edbd6c93fb9015dfaefe7a45d82e2e"
+      "size": 2251776,
+      "sha256": "016edc389007e0d15ee365fff7115fc91a820b46080cb39a3fb362f3b463bae7"
     },
     {
       "path": "KSwitcher.Screenshot.exe",
-      "size": 3244032,
-      "sha256": "c90aa8bb0c5e37b64b1c1db98cd9618f7bf0ff2941a80a6029f80fe248d2001b"
+      "size": 3247616,
+      "sha256": "c8ef070ad01acc410802c62e0df6a96cb299fe036fe8e99f0cf6a398b7324ec6"
     },
     {
       "path": "LICENSE",
@@ -28,13 +28,13 @@
     },
     {
       "path": "README.md",
-      "size": 93756,
-      "sha256": "1d1307356a3db561cf3a685eb90b5b524e9e62f9d8acb116a412d5f41242128f"
+      "size": 93885,
+      "sha256": "df6d40d0eb66ad7da8db1cffe6bd211de70dfee474cc228e041c821b3940718b"
     },
     {
       "path": "LAN-PREVIEW.md",
-      "size": 11201,
-      "sha256": "26d848df3b106882775ebe8918f2b3ae59ab3be81b713abb90831ed8a2243e8b"
+      "size": 11418,
+      "sha256": "2c13d3ed4761e679c352fb1ade24a1ec3060ad2862376ede801cdee5fcc3bada"
     },
     {
       "path": "dictionaries/en.txt",
@@ -82,5 +82,5 @@
       "sha256": "ba214e2aca7405e698b3ab21ceb1f41ce088edd996b3e30e4a9d58ff496f9413"
     }
   ],
-  "version": "0.6.74"
+  "schema": 1
 }

resources/app.rc

@@ -9,8 +9,8 @@ IDC_SCREENSHOT_PENCIL CURSOR "icons/lucide/pencil.cur"
 1 RT_MANIFEST "app.manifest"
 201 RCDATA "update.ps1"
 1 VERSIONINFO
- FILEVERSION 0,6,74,0
- PRODUCTVERSION 0,6,74,0
+ FILEVERSION 0,6,77,0
+ PRODUCTVERSION 0,6,77,0
  FILEOS VOS_NT_WINDOWS32
  FILETYPE VFT_APP
 BEGIN
@@ -20,7 +20,7 @@ BEGIN
   BEGIN
    VALUE "FileDescription", "KSwitcher — native keyboard and clipboard utility"
    VALUE "ProductName", "KSwitcher"
-   VALUE "FileVersion", "0.6.74"
+   VALUE "FileVersion", "0.6.77"
   END
  END
  BLOCK "VarFileInfo"

src/app.cpp

@@ -188,6 +188,7 @@ class Transaction
     ClipboardSnapshot snapshot;
     DWORD expected{};
     bool captured{};
+    bool clipboardModified{};
     mutable bool invalidLogged{};
     unsigned copyNumber{};
     std::wstring adopted;
@@ -210,9 +211,14 @@ class Transaction
                 expected = GetClipboardSequenceNumber();
                 try
                 {
+                    auto started = GetTickCount64();
+                    const bool image = IsClipboardFormatAvailable(CF_DIB) || IsClipboardFormatAvailable(CF_DIBV5) ||
+                        IsClipboardFormatAvailable(CF_BITMAP) || IsClipboardFormatAvailable(RegisterClipboardFormatW(L"PNG"));
                     snapshot.capture(app.window, expected);
                     if (expected != GetClipboardSequenceNumber())
                         throw std::runtime_error("Clipboard changed while taking snapshot");
+                    diagnosticEvent(L"Clipboard snapshot captured: elapsedMs=" +
+                        std::to_wstring(GetTickCount64() - started) + L" image=" + std::to_wstring(image));
                     break;
                 }
                 catch (...)
@@ -236,10 +242,12 @@ class Transaction
     ~Transaction()
     {
         if (farSnippet) finishSelection(false);
-        if (captured && GetClipboardSequenceNumber() == expected)
+        if (captured && clipboardModified && GetClipboardSequenceNumber() == expected)
             try
             {
+                auto started = GetTickCount64();
                 app.ownSequence = snapshot.restore(app.window, expected);
+                diagnosticEvent(L"Clipboard snapshot restored: elapsedMs=" + std::to_wstring(GetTickCount64() - started));
             }
             catch (...)
             {
@@ -296,6 +304,7 @@ class Transaction
         auto temporary = c;
         const std::wstring exclusion = L"ExcludeClipboardContentFromMonitorProcessing";
         temporary.formats.push_back({RegisterClipboardFormatW(exclusion.c_str()), exclusion, Bytes{0}});
+        clipboardModified = true;
         app.ownSequence = expected = writeClipboard(app.window, temporary);
         // A concurrent writer can win immediately after CloseClipboard, before we read its sequence.
         // Never adopt that writer's sequence as our own and paste its content.
@@ -811,11 +820,13 @@ void App::addTray()
     NOTIFYICONDATAW icon{sizeof(icon)};
     icon.hWnd = window;
     icon.uID = 1;
-    icon.uFlags = NIF_ICON | NIF_MESSAGE | NIF_TIP;
+    icon.uFlags = NIF_ICON | NIF_MESSAGE | NIF_TIP | NIF_SHOWTIP;
     icon.uCallbackMessage = TrayMessage;
     icon.hIcon = (HICON)LoadImageW(instance, MAKEINTRESOURCEW(IDI_KSWITCHER), IMAGE_ICON,
                                    GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), LR_SHARED);
-    wcscpy_s(icon.szTip, localBuildTitle(L"KSwitcher — keyboard layouts & clipboard").c_str());
+    auto tip = incomingLanFileCount ? L"KSwitcher — files ready to save: " + std::to_wstring(incomingLanFileCount)
+                                    : localBuildTitle(L"KSwitcher — keyboard layouts & clipboard");
+    wcsncpy_s(icon.szTip, tip.c_str(), _TRUNCATE);
     if (Shell_NotifyIconW(NIM_ADD, &icon))
     {
         KillTimer(window, TrayRetryTimer);
@@ -2026,7 +2037,8 @@ void App::transform(int command, int snippet, size_t snippetLength, HWND snippet
                 DiagnosticJson record{{"attempt", std::to_string(attempt)}, {"process", utf8(processName(target))},
                     {"command", transformCommandName(command)}, {"source", "Unknown"}, {"target", "Unknown"},
                     {"outcome", "busy"}, {"verification", "not-attempted"}, {"problem", true},
-                    {"elapsedMs", GetTickCount64() - requestedAt}};
+                    {"elapsedMs", GetTickCount64() - requestedAt},
+                    {"activeAttempt", activeTransformAttempt.load()}};
                 diagnosticOperation(record.dump());
             }
             catch (...) {}
@@ -2038,6 +2050,7 @@ void App::transform(int command, int snippet, size_t snippetLength, HWND snippet
         autoPending = false;
         snippetPending = -1;
     }
+    activeTransformAttempt = attempt;
     Run recent;
     std::optional<LastTransform> previous;
     Settings config;
@@ -2059,20 +2072,24 @@ void App::transform(int command, int snippet, size_t snippetLength, HWND snippet
             struct BusyReset
             {
                 std::atomic<bool> &b;
+                std::atomic<uint64_t> &active;
                 HWND window;
                 bool deferred{};
                 ~BusyReset()
                 {
+                    active = 0;
                     if (deferred)
                         PostMessageW(window, ReplayTypingMessage, 0, 0);
                     else
                         b = false;
                 }
-            } reset{busy, window, preDeferred};
+            } reset{busy, activeTransformAttempt, window, preDeferred};
+            const auto workerStarted = GetTickCount64();
             auto effectiveChat = requestedChat;
             if (lower(processName(target)) == L"chrome") effectiveChat = readChromeChat(target);
             config.cycle = chatCycle(config, languageProfileKey(config, target, effectiveChat), available);
             auto start = GetTickCount64();
+            ULONGLONG verificationMs{};
             std::wstring reason = L"cancelled-before-selection";
             std::wstring text, result, expected, actual, verification = L"not-attempted";
             int hint = -1, to = command >= Direct ? command - Direct : -1;
@@ -2087,6 +2104,8 @@ void App::transform(int command, int snippet, size_t snippetLength, HWND snippet
                             expected += key == L' ' ? L' ' : layout.at(physicalLayout().code(key));
                 }
                 diagnosticEvent(L"Transform context id=" + std::to_wstring(attempt) +
+                    L" queueMs=" + std::to_wstring(workerStarted - requestedAt) +
+                    L" profileMs=" + std::to_wstring(start - workerStarted) +
                     L" layouts=" + layoutIds + L" physicalKeys=" + diagnosticText(recent.keys) +
                     L" trackedExpected=" + diagnosticText(expected));
             }
@@ -2096,6 +2115,7 @@ void App::transform(int command, int snippet, size_t snippetLength, HWND snippet
                 HWND target;
                 uint64_t version, attempt;
                 ULONGLONG start;
+                const ULONGLONG &verificationMs;
                 bool enabled;
                 std::wstring &reason;
                 std::wstring &text, &result, &expected;
@@ -2116,7 +2136,8 @@ void App::transform(int command, int snippet, size_t snippetLength, HWND snippet
                                 {"outcome", utf8(reason)}, {"verification", utf8(verification)},
                                 {"problem", reason != L"Paste verified" && reason != L"layout-only" &&
                                     !(command == 0 && reason == L"paste-sent-unverified")},
-                                {"elapsedMs", GetTickCount64() - start}, {"foregroundSame", GetForegroundWindow() == target},
+                                {"elapsedMs", GetTickCount64() - start}, {"verificationMs", verificationMs},
+                                {"foregroundSame", GetForegroundWindow() == target},
                                 {"inputSame", app.inputVersion.load() == version}, {"original", bounded(text)},
                                 {"expected", bounded(verification == L"selection-mismatch" ? expected : result)}, {"actual", bounded(actual)},
                                 {"selectionExpected", bounded(expected)},
@@ -2126,7 +2147,7 @@ void App::transform(int command, int snippet, size_t snippetLength, HWND snippet
                         }
                         catch (...) {} // Logging must never abort a completed input transaction.
                 }
-            } audit{*this, target, version, attempt, requestedAt, manual || snippet >= 0, reason, text, result, expected,
+            } audit{*this, target, version, attempt, requestedAt, verificationMs, manual || snippet >= 0, reason, text, result, expected,
                     actual, verification, hint, to, command, available};
             try
             {
@@ -2191,7 +2212,12 @@ void App::transform(int command, int snippet, size_t snippetLength, HWND snippet
                     bool farEditor;
                     ~SelectionReset() { if (selected && !farEditor && valid()) chord(VK_RIGHT); }
                 } selectionReset{autoSelected, valid, farSnippet};
+                reason = L"context-changed-before-snapshot";
+                if (!valid()) return;
+                reason = L"clipboard-snapshot";
                 Transaction tx(*this, target, version, farSnippet, snippetEditor);
+                reason = L"context-changed-before-selection";
+                if (!tx.valid()) return;
                 reason = L"selection-unavailable";
                 diagnosticEvent(L"Transform target=" + processName(target) + L" command=" + std::to_wstring(command) +
                     L" recent=" + std::to_wstring(config.recent) + L" keys=" +
@@ -2311,6 +2337,11 @@ void App::transform(int command, int snippet, size_t snippetLength, HWND snippet
                         std::to_wstring(recent.keys.size()) + L" match=" + std::to_wstring(hint));
                     if (hint < 0)
                     {
+                        if (!tx.valid())
+                        {
+                            reason = L"context-changed-during-selection";
+                            return;
+                        }
                         actual = text;
                         verification = L"selection-mismatch";
                         reason = text.empty() ? L"recent-copy-empty" : L"recent-verification-mismatch";
@@ -2386,7 +2417,10 @@ void App::transform(int command, int snippet, size_t snippetLength, HWND snippet
                 }
                 bool sent = false;
                 const bool requireReadback = tx.recoveredSelection() || snippet >= 0;
+                auto probeStarted = GetTickCount64();
                 PasteProbe probe(!farSnippet && ((config.writeLog && manual) || requireReadback) && result != text, text, target);
+                verificationMs = GetTickCount64() - probeStarted;
+                diagnosticEvent(L"Paste probe prepared: elapsedMs=" + std::to_wstring(verificationMs) + L" status=" + probe.status);
                 if (requireReadback && !farSnippet && result != text && probe.status != L"ready")
                 {
                     verification = probe.status;
@@ -2424,6 +2458,7 @@ void App::transform(int command, int snippet, size_t snippetLength, HWND snippet
                     verification = probe.status;
                     if (tx.valid())
                     {
+                        auto readStarted = GetTickCount64();
                         auto observed = farSnippet ? tx.readFarSnippet(caretSteps(result)) :
                                                      probe.read((int)caretSteps(result));
                         // A native Edit may silently ignore Ctrl+V while the clipboard is busy.
@@ -2437,6 +2472,7 @@ void App::transform(int command, int snippet, size_t snippetLength, HWND snippet
                             else
                                 observed.reset();
                         }
+                        verificationMs += GetTickCount64() - readStarted;
                         verification = farSnippet ? (observed ? L"read-back-via-far-clipboard" :
                                                                  L"far-readback-unavailable") : probe.status;
                         if (observed && tx.valid())
@@ -2985,7 +3021,10 @@ LRESULT CALLBACK App::windowProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
         return 0;
     case TrayMessage:
         if (LOWORD(lp) == NIN_BALLOONUSERCLICK)
-            showLogs(*app);
+        {
+            if (std::exchange(app->incomingFileBalloon, false)) app->dispatch(20);
+            else showLogs(*app);
+        }
         else if (LOWORD(lp) == WM_CONTEXTMENU)
             app->trayMenu();
         else if (LOWORD(lp) == WM_LBUTTONDBLCLK)
@@ -3057,9 +3096,30 @@ LRESULT CALLBACK App::windowProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
         wcsncpy_s(icon.szInfo, text->c_str(), _TRUNCATE);
         wcscpy_s(icon.szInfoTitle, L"KSwitcher");
         icon.dwInfoFlags = NIIF_WARNING;
+        app->incomingFileBalloon = false;
         Shell_NotifyIconW(NIM_MODIFY, &icon);
         return 0;
     }
+    case LanFilesChangedMessage:
+    {
+        app->incomingLanFileCount = wp;
+        NOTIFYICONDATAW icon{sizeof(icon)};
+        icon.hWnd = hwnd;
+        icon.uID = 1;
+        icon.uFlags = NIF_TIP | NIF_SHOWTIP;
+        auto tip = wp ? L"KSwitcher — files ready to save: " + std::to_wstring(wp)
+                      : localBuildTitle(L"KSwitcher — keyboard layouts & clipboard");
+        wcsncpy_s(icon.szTip, tip.c_str(), _TRUNCATE);
+        if (lp)
+        {
+            icon.uFlags |= NIF_INFO;
+            wcscpy_s(icon.szInfoTitle, L"Incoming file ready to save");
+            wcscpy_s(icon.szInfo, L"Open Settings → Computers → Manage computers → Incoming files.");
+            icon.dwInfoFlags = NIIF_INFO;
+        }
+        if (Shell_NotifyIconW(NIM_MODIFY, &icon) && lp) app->incomingFileBalloon = true;
+        return 0;
+    }
     case CheckAutostartMessage:
         app->checkAutostartPath();
         return 0;

src/app.h

@@ -162,6 +162,9 @@ class App
     UINT taskbarCreated{};
     bool trayRetryPending{};
     uint64_t transformAttempt{}, previousAttemptVersion{};
+    size_t incomingLanFileCount{};
+    bool incomingFileBalloon{};
+    std::atomic<uint64_t> activeTransformAttempt{};
     ULONGLONG previousAttemptAt{};
     HWND previousAttemptWindow{};
     int previousAttemptCommand{}, repeatAttempts{};

src/autocorrect.cpp

@@ -245,18 +245,20 @@ std::optional<AutoSuggestion> AutoCorrector::suggest(const std::wstring &typed,
     const std::wstring alphabet = sourceLanguage == L"en" ? L"abcdefghijklmnopqrstuvwxyz" :
         sourceLanguage == L"uk" ? L"абвгґдеєжзиіїйклмнопрстуфхцчшщьюя" : L"абвгдеёжзийклмнопрстуфхцчшщъыьэюя";
     auto small = lower(word);
+    bool inCycle = std::find(settings.cycle.begin(), settings.cycle.end(), layouts[source].id) != settings.cycle.end();
     bool sameLanguage = safeAutoWord(word, settings.autoMinLength) &&
-        small.find_first_not_of(alphabet) == small.npos &&
-        std::find(settings.cycle.begin(), settings.cycle.end(), layouts[source].id) != settings.cycle.end();
+        small.find_first_not_of(alphabet) == small.npos && inCycle;
     auto sameLayout = [&](std::wstring text)
     {
         if (word != small) text[0] = upper(text.substr(0, 1))[0];
         return AutoSuggestion{source, source, prefix + text + suffix};
     };
-    if (settings.autoReplace && sameLanguage)
+    if (settings.autoReplace && inCycle)
     {
         auto replacement = settings.autoReplacements.find(small);
         if (replacement != settings.autoReplacements.end() &&
+            (word == small || (word.substr(1) == small.substr(1) && word != upper(word))) &&
+            validAutoReplacementSource(small, alphabet) &&
             validAutoCorrection(replacement->second, alphabet))
             return sameLayout(replacement->second);
     }

src/core.cpp

@@ -35,6 +35,11 @@ bool validAutoCorrection(const std::wstring &text, const std::wstring &alphabet)
     }
     return true;
 }
+bool validAutoReplacementSource(const std::wstring &text, const std::wstring &alphabet)
+{
+    return text.find(L' ') == text.npos && text.find_first_of(alphabet) != text.npos &&
+           validAutoCorrection(text, alphabet + L"0123456789");
+}
 int HotkeyHook::update(UINT key, bool down, UINT modifiers,
                        const std::vector<std::pair<int, Hotkey>> &bindings)
 {

src/core.h

@@ -21,6 +21,7 @@ struct Layout
 };
 bool letter(wchar_t ch);
 bool validAutoCorrection(const std::wstring &text, const std::wstring &alphabet);
+bool validAutoReplacementSource(const std::wstring &text, const std::wstring &alphabet);
 std::wstring lower(std::wstring text);
 std::wstring upper(std::wstring text);
 std::wstring convert(const std::wstring &, const Layout &, const Layout &, bool force = false);

src/lan.cpp

@@ -161,6 +161,7 @@ struct LanService::Impl
         {std::lock_guard lock(inputMutex);inputOut.clear();inputIn.clear();inputReady.clear();}
         std::lock_guard lock(mutex); pending.reset(); peers.clear();clipboard=std::make_unique<lan::ClipboardExchange>(id);
         transfers=std::make_unique<lan::ClipboardExchange>(id,"file-transfer");incomingFiles.clear();logDownload.reset();
+        if(inputWindow)PostMessageW(inputWindow,LanFilesChangedMessage,0,FALSE);
     }
     void send(SOCKET socket,const sockaddr_in &address,const Json &j)
     {
@@ -178,7 +179,10 @@ struct LanService::Impl
                 auto end=std::find(item.bytes.begin(),item.bytes.end(),0);
                 if(end!=item.bytes.begin() && end!=item.bytes.end() && end-item.bytes.begin()<=1024 &&
                    item.bytes.end()-end-1<=16*1024*1024)
+                {
                     incomingFiles.push_back(std::move(item));
+                    if(inputWindow)PostMessageW(inputWindow,LanFilesChangedMessage,incomingFiles.size(),TRUE);
+                }
             }
             else if(item.app=="log-request" && item.bytes.size()==33)
             {
@@ -448,6 +452,7 @@ struct LanService::Impl
                 atomicWrite(wide(j.at("path").get<std::string>()),Bytes(start,found->bytes.end()));
             }
             incomingFiles.erase(found);
+            if(inputWindow)PostMessageW(inputWindow,LanFilesChangedMessage,incomingFiles.size(),FALSE);
         }
         if(action=="position")
         {
@@ -494,6 +499,7 @@ struct LanService::Impl
             trusted.erase(peer);positions.erase(peer);if(trusted.empty())shareInput=false;
             try{save();}catch(...){trusted=std::move(oldTrusted);positions=std::move(oldPositions);shareInput=oldSharing;throw;}
             std::erase_if(incomingFiles,[&](const auto &file){return file.peer==peer;});
+            if(inputWindow)PostMessageW(inputWindow,LanFilesChangedMessage,incomingFiles.size(),FALSE);
             if(logDownload && logDownload->peer==peer)logDownload.reset();
             if(pending&&pending->peer==peer)pending.reset();
             configureRouter();

src/lan.h

@@ -5,6 +5,7 @@
 namespace ks
 {
 inline constexpr UINT LanInputReadyMessage=WM_APP+67, LanClipboardReadyMessage=WM_APP+68, LanClipboardPublishMessage=WM_APP+69;
+inline constexpr UINT LanFilesChangedMessage=WM_APP+70;
 struct LanClipboard {std::string peer,name,app;Bytes data;DWORD sequence{};};
 // Discovery, pairing and optional encrypted input within the resident process.
 class LanService

src/mcp_logs.h

@@ -16,7 +16,7 @@ inline int runLogMcp(const std::function<Bytes(const Bytes &)> &lan)
     };
     const Json tools = Json::parse(R"({"tools":[
         {"name":"list_log_computers","description":"List paired computers that support remote log downloads.","inputSchema":{"type":"object","properties":{}},"annotations":{"readOnlyHint":true}},
-        {"name":"read_diagnostic_log","description":"Read recent KSwitcher diagnostic log lines. Omit peer for the local computer.","inputSchema":{"type":"object","properties":{"peer":{"type":"string"},"previous":{"type":"boolean"},"lines":{"type":"integer","minimum":1,"maximum":500,"default":100}}},"annotations":{"readOnlyHint":true}}
+        {"name":"read_diagnostic_log","description":"Read KSwitcher diagnostic log lines. Omit peer for the local computer. Use offset to page backward from the newest line.","inputSchema":{"type":"object","properties":{"peer":{"type":"string"},"previous":{"type":"boolean"},"lines":{"type":"integer","minimum":1,"maximum":500,"default":100},"offset":{"type":"integer","minimum":0,"default":0}}},"annotations":{"readOnlyHint":true}}
     ]})");
     std::string line;
     while (std::getline(std::cin, line))
@@ -62,6 +62,8 @@ inline int runLogMcp(const std::function<Bytes(const Bytes &)> &lan)
                         bool previous = arguments.value("previous", false);
                         int lines = arguments.value("lines", 100);
                         if (lines < 1 || lines > 500) throw std::runtime_error("lines must be between 1 and 500.");
+                        int offset = arguments.value("offset", 0);
+                        if (offset < 0) throw std::runtime_error("offset must be nonnegative.");
                         if (peer.empty()) output = utf8(readDiagnosticLog(previous));
                         else
                         {
@@ -82,15 +84,17 @@ inline int runLogMcp(const std::function<Bytes(const Bytes &)> &lan)
                                 Sleep(250);
                             }
                         }
-                        size_t start = output.size();
-                        if (start && output.back() == '\n') --start;
-                        while (lines-- && start)
+                        auto previousLine = [&](size_t end)
                         {
-                            auto newline = output.rfind('\n', start - 1);
-                            if (newline == std::string::npos) { start = 0; break; }
-                            start = newline;
-                        }
-                        if (start) output.erase(0, start + 1);
+                            if (!end) return size_t{};
+                            if (output[end - 1] == '\n') --end;
+                            return end ? output.rfind('\n', end - 1) + 1 : size_t{};
+                        };
+                        size_t end = output.size();
+                        while (offset-- > 0 && end) end = previousLine(end);
+                        size_t start = end;
+                        while (lines-- > 0 && start) start = previousLine(start);
+                        output = output.substr(start, end - start);
                     }
                     else throw std::runtime_error("Unknown tool.");
                 }

src/paste_probe.h

@@ -90,15 +90,22 @@ class PasteProbe
             return {};
         }
         IUIAutomationElement *focused{};
-        BOOL same = FALSE;
-        if (SUCCEEDED(automation->GetFocusedElement(&focused)) && focused)
+        if (FAILED(automation->GetFocusedElement(&focused)) || !focused)
         {
-            automation->CompareElements(element, focused, &same);
+            if (focused) focused->Release();
+            status = L"accessibility-focus-unavailable";
+            return {};
+        }
+        BOOL same = FALSE;
+        if (FAILED(automation->CompareElements(element, focused, &same)))
+        {
+            focused->Release();
+            status = L"accessibility-focus-comparison-failed";
+            return {};
         }
         if (!same)
         {
-            if (focused)
-                focused->Release();
+            focused->Release();
             status = L"focused-control-changed";
             return {};
         }

src/platform.cpp

@@ -816,6 +816,13 @@ void diagnosticOperation(const std::string &json)
     auto record = nlohmann::json::parse(json);
     if (!record.value("problem", true))
     {
+        if (record.value("elapsedMs", 0ULL) >= 2000 && record.value("outcome", "") == "Paste verified")
+        {
+            auto summary = record;
+            for (auto field : {"original", "expected", "actual", "selectionExpected"})
+                summary.erase(field);
+            log(L"Operation " + wide(summary.dump(-1, ' ', true, nlohmann::json::error_handler_t::replace)));
+        }
         // Keep successful operations only in the bounded, short-lived context.
         // They are persisted with a subsequent failure, never as standalone rows.
         diagnosticBuffer.record(L"Completed operation " + wide(record.dump(-1, ' ', true,

src/screenshot.cpp

@@ -180,6 +180,7 @@ struct Capture
     LineStyle lineStyle=LineStyle::Solid;
     int smoothing=25;
     bool smoothingDrag=false;
+    bool smoothingPreferenceDirty=false;
     LineEnds arrowEnds=LineEnds::End, freehandEnds=LineEnds::None;
     COLORREF currentColor=RGB(225,42,50);
     COLORREF customColors[16]{};
@@ -221,8 +222,24 @@ struct Capture
     MarkPart hoveredPart=MarkPart::None;
     std::wstring statusText;
     std::filesystem::path savedPath;
-    explicit Capture(ScreenshotHost &a) : app(a), autoOpenEditor(a.autoOpenEditor) {}
+    explicit Capture(ScreenshotHost &a) : app(a), autoOpenEditor(a.autoOpenEditor)
+    {
+        if(a.smoothingPreference.empty()) return;
+        try {
+            auto stored=readFile(a.smoothingPreference,1);
+            if(stored.size()==1 && stored.front()<=100) smoothing=stored.front();
+        } catch(const std::exception &) {} // Missing or unreadable preference uses the default.
+    }
+    void saveSmoothingPreference()
+    {
+        if(!smoothingPreferenceDirty || app.smoothingPreference.empty()) return;
+        try {
+            atomicWrite(app.smoothingPreference,Bytes{static_cast<unsigned char>(smoothing)});
+            smoothingPreferenceDirty=false;
+        } catch(const std::exception &) {} // A failed preference write must not interrupt editing.
+    }
     ~Capture() {
+        saveSmoothingPreference();
         if(pencilCursor) DestroyCursor(pencilCursor);
         for(auto cursor:drawingCursors) if(cursor) DestroyCursor(cursor);
         if (font) DeleteObject(font);
@@ -1170,8 +1187,14 @@ LRESULT CALLBACK captureProc(HWND w, UINT msg, WPARAM wp, LPARAM lp)
                     setScreenshotSmoothing(c->marks[c->selected],amount);
                     resolveScreenshotLinks(c->marks);
                     c->smoothingDrag=LOWORD(wp)==TB_THUMBTRACK;
-                } else if(!pencil) c->smoothing=amount;
-                if(LOWORD(wp)!=TB_THUMBTRACK) c->smoothingDrag=false;
+                } else if(!pencil && c->smoothing!=amount) {
+                    c->smoothing=amount;
+                    c->smoothingPreferenceDirty=true;
+                }
+                if(LOWORD(wp)!=TB_THUMBTRACK) {
+                    c->smoothingDrag=false;
+                    c->saveSmoothingPreference();
+                }
                 syncLineOptions(w,*c); InvalidateRect(w,nullptr,FALSE);
                 return 0;
             }
@@ -1185,7 +1208,11 @@ LRESULT CALLBACK captureProc(HWND w, UINT msg, WPARAM wp, LPARAM lp)
             if (c->dragging) return 0;
             if(LOWORD(wp)==44) {
                 int amount=int(SendDlgItemMessageW(w,41,TBM_GETPOS,0,0));
-                c->smoothing=amount;
+                if(c->smoothing!=amount) {
+                    c->smoothing=amount;
+                    c->smoothingPreferenceDirty=true;
+                }
+                c->saveSmoothingPreference();
                 if(std::any_of(c->marks.begin(),c->marks.end(),[&](const Mark &m){return m.freehand && m.smoothing!=amount;})) {
                     c->remember(c->marks);
                     for(auto &mark:c->marks) if(mark.freehand) setScreenshotSmoothing(mark,amount);

src/screenshot.h

@@ -9,6 +9,7 @@ struct ScreenshotHost {
     unsigned windows{};
     bool (*notify)(const Clip &){};
     bool autoOpenEditor = false;
+    std::filesystem::path smoothingPreference;
 };
 inline constexpr UINT ScreenshotRequest=WM_APP+71, ScreenshotIdle=WM_APP+72;
 void showScreenshot(ScreenshotHost &);

src/screenshot_main.cpp

@@ -110,6 +110,8 @@ int WINAPI wWinMain(HINSTANCE instance,HINSTANCE,PWSTR,int)
     InitCommonControlsEx(&controls);
     ks::ScreenshotHost host{instance};
     host.notify=ks::notifyScreenshot;
+    try { host.smoothingPreference=ks::dataDirectory()/L"screenshot-smoothing"; }
+    catch(const std::exception &) {} // The editor can still run without local preferences.
     WNDCLASSW cls{}; cls.hInstance=instance; cls.lpfnWndProc=controller; cls.lpszClassName=ControllerClass;
     RegisterClassW(&cls);
     host.window=CreateWindowW(ControllerClass,L"KSwitcher Screenshot",0,0,0,0,0,nullptr,nullptr,instance,&host);

src/storage.cpp

@@ -253,10 +253,12 @@ void validateSettings(const Settings &s)
                               L"абвгдеёжзийклмнопрстуфхцчшщъыьэюя"})
             valid |= !from.empty() && !to.empty() && from.size() <= 32 && to.size() <= 32 &&
                      from == lower(from) && to == lower(to) && from != to &&
-                     from.find_first_not_of(alphabet) == from.npos &&
+                     validAutoReplacementSource(from, alphabet) &&
                      validAutoCorrection(to, alphabet);
         if (!valid)
-            throw std::runtime_error("Use a lowercase typo of 1-32 letters and a different correction of 1-32 characters in the same language. Single spaces between words and apostrophes between letters are allowed.");
+            throw std::runtime_error("Invalid replacement: " + utf8(from.substr(0, 32)) + "=" +
+                utf8(to.substr(0, 32)) + "\n\nUse one lowercase word of 1-32 characters. The typo may include "
+                "digits and internal apostrophes. Use a different correction of 1-32 characters in the same language.");
     }
     for (const auto &[language, words] : s.autoWords)
     {

src/ui_lan.inl

@@ -231,7 +231,13 @@ LRESULT CALLBACK lanProc(HWND w,UINT msg,WPARAM wp,LPARAM lp)
                 auto answer=MessageBoxW(w,question.c_str(),L"Incoming file",MB_YESNOCANCEL|MB_ICONQUESTION);
                 if(answer==IDYES || answer==IDNO)
                 {
-                    auto destination=answer==IDYES?pickLanFile(w,true,L"received-file"):std::filesystem::path{};
+                    // A peer supplies the display name. Only offer it as a plain Windows filename.
+                    const bool validName = !name.empty() && name.size() <= 255 &&
+                        name.find_first_of(L"<>:\"/\\|?*") == name.npos &&
+                        name.back() != L'.' && name.back() != L' ' &&
+                        std::none_of(name.begin(), name.end(), [](wchar_t c) { return c < L' '; });
+                    auto destination=answer==IDYES?pickLanFile(w,true,validName?name.c_str():L"received-file"):
+                        std::filesystem::path{};
                     if(answer==IDNO||!destination.empty())
                         lanRequest(*v->app,{{"action",answer==IDYES?"saveFile":"discardFile"},{"id",file.at("id")},
                             {"peer",file.at("peer")},{"path",utf8(destination.wstring())}});

src/update.h

@@ -2,7 +2,7 @@
 #include "platform.h"
 namespace ks
 {
-inline constexpr wchar_t AppVersion[] = L"0.6.74";
+inline constexpr wchar_t AppVersion[] = L"0.6.77";
 inline constexpr UINT UpdateMessage = WM_APP + 7;
 inline constexpr UINT UpdateCheckIntervalMs = 6 * 60 * 60 * 1000;
 inline constexpr UINT UpdateNotificationRetryMs = 5 * 60 * 1000;

tests/screenshot_ui.cpp

@@ -14,7 +14,18 @@ int main(int argc, char **argv)
             std::filesystem::create_directories(root);
             struct Cleanup {std::filesystem::path root; ~Cleanup(){std::error_code ec; std::filesystem::remove_all(root,ec);}} cleanup{root};
             ks::ScreenshotHost app{GetModuleHandleW(nullptr)};
+            app.smoothingPreference=root/L"screenshot-smoothing";
             ks::Capture c(app);
+            require(c.smoothing==25,"missing preference uses default smoothing");
+            c.smoothing=61;
+            c.smoothingPreferenceDirty=true;
+            c.saveSmoothingPreference();
+            ks::Capture reopened(app);
+            require(reopened.smoothing==61,"new editor restores saved smoothing");
+            ks::atomicWrite(app.smoothingPreference,ks::Bytes{101});
+            ks::Capture invalidPreference(app);
+            require(invalidPreference.smoothing==25,"invalid preference uses default smoothing");
+            std::filesystem::remove(app.smoothingPreference);
             c.image=std::make_unique<ks::Surface>(320,240);
             PatBlt(c.image->dc,0,0,320,240,WHITENESS);
             c.marks={ks::Mark{{40,40},{180,140},0}};

tests/tests.cpp

@@ -592,6 +592,10 @@ int main(int argc, char **argv)
             require(!edited.suggest(L"hlelo ", 0, layouts, options), "never-correct overrides explicit pairs");
             options.autoNever.clear();
             options.autoReplacements[L"мамамила"] = L"мама мила";
+            options.autoReplacements[L"нав1язав"] = L"нав’язав";
+            ks::validateSettings(options);
+            correction = edited.suggest(L"Нав1язав ", 2, layouts, options);
+            require(correction && correction->text == L"Нав’язав ", "explicit replacements accept digits in the typo");
             for (const auto *text : {L"рев'ю", L"рев’ю", L"ревʼю", L"моє рев'ю"})
             {
                 options.autoReplacements[L"ревю"] = text;