fix(update): repair Go syntax in Windows update cleanup

fix: improve OceanBase Oracle performance, navigation, and count UX

frontend/src/components/DataGridPaginationBar.tsx

@@ -1,6 +1,6 @@
 import React from 'react';
 import { Button, InputNumber, Pagination, Select } from 'antd';
-import { LeftOutlined, RightOutlined } from '@ant-design/icons';
+import { CloseOutlined, LeftOutlined, RightOutlined, VerticalAlignBottomOutlined } from '@ant-design/icons';
 import { t as defaultTranslate, type I18nParams } from '../i18n';
 
 interface DataGridPaginationState {
@@ -26,12 +26,31 @@ export interface DataGridPaginationBarProps {
   paginationPageText: string;
   paginationPageSizeOptions: string[];
   showKnownPageCount: boolean;
+  manualTotalCountAvailable?: boolean;
+  totalCountLoading?: boolean;
   onPageChange?: (page: number, size: number) => void;
   onPageSizeChange: (value: string) => void;
   onV2PageStep: (direction: 'previous' | 'next') => void;
+  onToggleTotalCount?: () => void;
   translate?: DataGridPaginationTranslate;
 }
 
+const findToolbarTotalCountButton = (
+  trigger: HTMLElement,
+  labels: string[],
+): HTMLButtonElement | null => {
+  const root = trigger.closest('.data-grid-root') || trigger.ownerDocument?.body;
+  if (!root) return null;
+  const normalizedLabels = labels.map((label) => String(label || '').trim()).filter(Boolean);
+  const buttons = Array.from(root.querySelectorAll('button')) as HTMLButtonElement[];
+  return buttons.find((button) => {
+    if (button === trigger) return false;
+    if (button.disabled) return false;
+    const text = String(button.textContent || '').replace(/\s+/g, ' ').trim();
+    return normalizedLabels.some((label) => text === label || text.includes(label));
+  }) || null;
+};
+
 const DataGridPaginationBar: React.FC<DataGridPaginationBarProps> = ({
   isV2Ui,
   pagination,
@@ -42,9 +61,12 @@ const DataGridPaginationBar: React.FC<DataGridPaginationBarProps> = ({
   paginationPageText,
   paginationPageSizeOptions,
   showKnownPageCount,
+  manualTotalCountAvailable = false,
+  totalCountLoading = false,
   onPageChange,
   onPageSizeChange,
   onV2PageStep,
+  onToggleTotalCount,
   translate = defaultTranslate,
 }) => {
   const [jumpPage, setJumpPage] = React.useState<number | null>(pagination?.current ?? null);
@@ -58,6 +80,37 @@ const DataGridPaginationBar: React.FC<DataGridPaginationBarProps> = ({
     return null;
   }
 
+  const countTotalLabel = translate('data_grid.toolbar.count_total');
+  const cancelCountLabel = translate('data_grid.toolbar.cancel_count');
+  const effectiveTotalCountLoading = totalCountLoading || Boolean(pagination.totalCountLoading);
+  const shouldShowTotalCountButton = Boolean(
+    onToggleTotalCount
+    || manualTotalCountAvailable
+    || pagination.totalCountLoading
+    || pagination.totalKnown === false,
+  );
+  const handleToggleTotalCount = (event: React.MouseEvent<HTMLButtonElement>) => {
+    if (onToggleTotalCount) {
+      onToggleTotalCount();
+      return;
+    }
+    // Backward-compatible bridge for existing DataGridShell callers: the top toolbar already owns
+    // the total-count handler, but it can be horizontally scrolled out of view on large toolbars.
+    // Trigger that existing button so the pagination bar can expose the action without duplicating data-flow state.
+    const toolbarButton = findToolbarTotalCountButton(event.currentTarget, [countTotalLabel, cancelCountLabel]);
+    toolbarButton?.click();
+  };
+  const totalCountButton = shouldShowTotalCountButton ? (
+    <Button
+      data-grid-pagination-total-count="true"
+      size="small"
+      icon={effectiveTotalCountLoading ? <CloseOutlined /> : <VerticalAlignBottomOutlined />}
+      onClick={handleToggleTotalCount}
+    >
+      {effectiveTotalCountLoading ? cancelCountLabel : countTotalLabel}
+    </Button>
+  ) : null;
+
   const maxJumpPage = showKnownPageCount ? Math.max(1, paginationTotalPages) : null;
   const normalizedJumpPage = Number.isFinite(Number(jumpPage)) && Number(jumpPage) > 0
     ? (maxJumpPage !== null
@@ -132,6 +185,7 @@ const DataGridPaginationBar: React.FC<DataGridPaginationBarProps> = ({
           <div className="data-grid-pagination-summary" aria-live="polite">
             <span className="data-grid-pagination-summary-value">{paginationV2SummaryText}</span>
           </div>
+          {totalCountButton}
           <Button
             data-grid-v2-pagination-prev="true"
             size="small"
@@ -174,6 +228,7 @@ const DataGridPaginationBar: React.FC<DataGridPaginationBarProps> = ({
             <span className="data-grid-pagination-kicker">{translate('data_grid.pagination.result_set')}</span>
             <span className="data-grid-pagination-summary-value">{paginationSummaryText}</span>
           </div>
+          {totalCountButton}
           {showSequentialPagination ? sequentialPaginationControl : (
             <Pagination
               current={pagination.current}

frontend/src/components/MonacoEditor.tsx

@@ -24,6 +24,140 @@ const sameEditorPosition = (left: any, right: any): boolean => (
   && Number(left?.column) === Number(right?.column)
 );
 
+const stripSqlIdentifierQuotes = (value: string): string => {
+  const text = String(value || '').trim();
+  if (!text) return '';
+  if ((text.startsWith('`') && text.endsWith('`'))
+    || (text.startsWith('"') && text.endsWith('"'))
+    || (text.startsWith('[') && text.endsWith(']'))) {
+    return text.slice(1, -1).trim();
+  }
+  return text;
+};
+
+const splitSqlIdentifierPath = (raw: string): string[] => (
+  String(raw || '')
+    .split('.')
+    .map(stripSqlIdentifierQuotes)
+    .map((part) => part.trim())
+    .filter(Boolean)
+);
+
+const resolveIdentifierWindowAtColumn = (
+  lineContent: string,
+  column: number,
+): { start: number; end: number; text: string } | null => {
+  const text = String(lineContent || '');
+  if (!text) return null;
+  const isIdentChar = (ch: string) => /[A-Za-z0-9_$`"\[\].]/.test(ch || '');
+  let offset = Math.max(0, Math.min(text.length - 1, Number(column || 1) - 2));
+  if (!isIdentChar(text[offset] || '')) {
+    if (offset > 0 && isIdentChar(text[offset - 1] || '')) {
+      offset -= 1;
+    } else if (offset + 1 < text.length && isIdentChar(text[offset + 1] || '')) {
+      offset += 1;
+    } else {
+      return null;
+    }
+  }
+  let start = offset;
+  while (start > 0 && isIdentChar(text[start - 1] || '')) start -= 1;
+  let end = offset + 1;
+  while (end < text.length && isIdentChar(text[end] || '')) end += 1;
+  return start < end ? { start, end, text: text.slice(start, end).trim() } : null;
+};
+
+const isLikelyTableReferenceIdentifier = (
+  lineContent: string,
+  identifierStart: number,
+): boolean => {
+  const beforeIdentifier = String(lineContent || '').slice(0, Math.max(0, identifierStart));
+  return /\b(?:from|join|update|into|delete\s+from|alter\s+table|drop\s+table|truncate\s+table)\s*$/i.test(beforeIdentifier);
+};
+
+const isOceanBaseOracleConnection = (connection: any): boolean => {
+  const config = connection?.config || {};
+  return String(config.type || '').trim().toLowerCase() === 'oceanbase'
+    && String(config.oceanBaseProtocol || '').trim().toLowerCase() === 'oracle';
+};
+
+const installOceanBaseOracleNavigationFallback = (editor: any) => {
+  const editorDomNode = editor?.getDomNode?.();
+  if (!editorDomNode || editor.__gonaviObOracleNavigationFallbackInstalled) {
+    return;
+  }
+  Object.defineProperty(editor, '__gonaviObOracleNavigationFallbackInstalled', {
+    value: true,
+    configurable: true,
+  });
+
+  const handleMouseDownCapture = (event: MouseEvent) => {
+    if (event.button !== 0 || !(event.ctrlKey || event.metaKey) || event.altKey) {
+      return;
+    }
+
+    const store = useStore.getState();
+    const activeTab = (store.tabs || []).find((tab: any) => tab.id === store.activeTabId);
+    if (!activeTab || activeTab.type !== 'query') {
+      return;
+    }
+    const connectionId = String(activeTab.connectionId || store.activeContext?.connectionId || '').trim();
+    if (!connectionId) {
+      return;
+    }
+    const connection = (store.connections || []).find((item: any) => item.id === connectionId);
+    if (!isOceanBaseOracleConnection(connection)) {
+      return;
+    }
+
+    const target = editor.getTargetAtClientPoint?.(event.clientX, event.clientY);
+    const position = target?.position;
+    if (!position) {
+      return;
+    }
+    const model = editor.getModel?.();
+    const lineContent = String(model?.getLineContent?.(position.lineNumber) || '');
+    const identifier = resolveIdentifierWindowAtColumn(lineContent, position.column);
+    if (!identifier || !identifier.text.includes('.')) {
+      return;
+    }
+    if (!isLikelyTableReferenceIdentifier(lineContent, identifier.start)) {
+      return;
+    }
+
+    const parts = splitSqlIdentifierPath(identifier.text);
+    if (parts.length !== 2) {
+      return;
+    }
+    const [schemaName, tableName] = parts;
+    if (!schemaName || !tableName) {
+      return;
+    }
+
+    event.preventDefault();
+    event.stopPropagation();
+    event.stopImmediatePropagation?.();
+    store.setActiveContext?.({ connectionId, dbName: schemaName });
+    store.addTab?.({
+      id: `${connectionId}-${schemaName}-table-${tableName}`,
+      title: tableName,
+      type: 'table',
+      connectionId,
+      dbName: schemaName,
+      tableName,
+      initialViewMode: 'fields',
+      initialViewModeRequestId: String(Date.now()),
+      objectType: 'table',
+      returnToTabId: activeTab.id || undefined,
+    });
+  };
+
+  editorDomNode.addEventListener('mousedown', handleMouseDownCapture, true);
+  editor.onDidDispose?.(() => {
+    editorDomNode.removeEventListener('mousedown', handleMouseDownCapture, true);
+  });
+};
+
 const patchQueryEditorAiInlineRightArrowFallback = (editor: any, monaco: any) => {
   const originalAddCommand = editor?.addCommand?.bind?.(editor);
   if (!originalAddCommand || !monaco?.KeyCode?.RightArrow) {
@@ -154,6 +288,7 @@ const MonacoEditor: React.FC<MonacoEditorProps> = ({
   }, [beforeMount]);
 
   const handleMount: OnMount = useCallback((editor, monaco) => {
+    installOceanBaseOracleNavigationFallback(editor);
     patchQueryEditorAiInlineRightArrowFallback(editor, monaco);
     onMount?.(editor, monaco);
   }, [onMount]);

internal/app/db_context.go

@@ -9,8 +9,6 @@ import (
 	"GoNavi-Wails/internal/db"
 )
 
-const defaultOceanBaseOracleQueryTimeoutSeconds = 120
-
 func normalizeRunConfig(config connection.ConnectionConfig, dbName string) connection.ConnectionConfig {
 	runConfig := config
 	name := strings.TrimSpace(dbName)
@@ -56,10 +54,6 @@ func applyOceanBaseOracleCurrentSchemaInit(config connection.ConnectionConfig, s
 	if normalizedSchema == "" {
 		return config
 	}
-	if config.Timeout <= 0 {
-		// OceanBase Oracle 查询经常需要经过 OBProxy/Oracle driver 的读等待；默认 30s 容易把慢查询误报成 driver: bad connection。
-		config.Timeout = defaultOceanBaseOracleQueryTimeoutSeconds
-	}
 	values, err := url.ParseQuery(strings.TrimSpace(config.ConnectionParams))
 	if err != nil {
 		return config

internal/app/db_context_oceanbase_oracle_test.go

@@ -20,8 +20,8 @@ func TestNormalizeRunConfig_OceanBaseOracleAddsCurrentSchemaInit(t *testing.T) {
 	if runConfig.Database != "OBORCL" {
 		t.Fatalf("expected OceanBase Oracle service name to stay OBORCL, got %q", runConfig.Database)
 	}
-	if runConfig.Timeout != defaultOceanBaseOracleQueryTimeoutSeconds {
+	if runConfig.Timeout != 0 {
-		t.Fatalf("expected OceanBase Oracle default query timeout %d, got %d", defaultOceanBaseOracleQueryTimeoutSeconds, runConfig.Timeout)
+		t.Fatalf("expected default OceanBase Oracle timeout to stay unset, got %d", runConfig.Timeout)
 	}
 	values, err := url.ParseQuery(runConfig.ConnectionParams)
 	if err != nil {

internal/app/update_cleanup.go

@@ -0,0 +1,363 @@
+package app
+
+import (
+	"io"
+	"os"
+	"path/filepath"
+	stdRuntime "runtime"
+	"strconv"
+	"strings"
+
+	"GoNavi-Wails/internal/logger"
+)
+
+func init() {
+	updateLaunchInstallScript = launchUpdateScriptWithCleanup
+}
+
+func launchUpdateScriptWithCleanup(staged *stagedUpdate) error {
+	exePath, err := os.Executable()
+	if err != nil {
+		return err
+	}
+	exePath, _ = filepath.EvalSymlinks(exePath)
+	pid := os.Getpid()
+
+	if stdRuntime.GOOS == "windows" {
+		return launchWindowsUpdateWithCleanup(staged, exePath, pid)
+	}
+	return launchUpdateScript(staged)
+}
+
+func launchWindowsUpdateWithCleanup(staged *stagedUpdate, targetExe string, pid int) error {
+	if staged == nil {
+		return localizedUpdateError{key: "app.update.backend.message.no_downloaded_package"}
+	}
+	if err := os.MkdirAll(staged.StagedDir, 0o755); err != nil {
+		return err
+	}
+
+	currentTargetExe := strings.TrimSpace(targetExe)
+	originalSourceDir := strings.TrimSpace(filepath.Dir(staged.FilePath))
+	preparedSource, err := prepareWindowsStagedUpdateAsset(staged.FilePath, staged.StagedDir)
+	if err != nil {
+		return err
+	}
+	staged.FilePath = preparedSource
+	staged.InstallLogPath = buildUpdateInstallLogPath(staged.StagedDir)
+	finalTargetExe := resolveWindowsUpdateFinalTargetPath(currentTargetExe, staged.FilePath)
+
+	cleanupWindowsUpdateArtifacts([]string{
+		originalSourceDir,
+		strings.TrimSpace(filepath.Dir(currentTargetExe)),
+		strings.TrimSpace(filepath.Dir(finalTargetExe)),
+	}, map[string]struct{}{
+		cleanComparablePath(currentTargetExe): {},
+		cleanComparablePath(finalTargetExe):   {},
+		cleanComparablePath(staged.FilePath):  {},
+		cleanComparablePath(staged.StagedDir): {},
+	})
+
+	scriptPath := filepath.Join(staged.StagedDir, "update.cmd")
+	content := buildWindowsScriptWithCurrentTargetCleanup(staged.FilePath, finalTargetExe, currentTargetExe, staged.StagedDir, staged.InstallLogPath, pid)
+	if err := os.WriteFile(scriptPath, []byte(content), 0o644); err != nil {
+		return err
+	}
+
+	logger.Infof("启动 Windows 更新脚本：current=%s target=%s script=%s log=%s", currentTargetExe, finalTargetExe, scriptPath, staged.InstallLogPath)
+	cmd := buildWindowsLaunchCommand(scriptPath)
+	if err := cmd.Start(); err != nil {
+		return err
+	}
+	if cmd.Process != nil {
+		if err := cmd.Process.Release(); err != nil {
+			logger.Warnf("释放 Windows 更新脚本进程句柄失败：%v", err)
+		}
+	}
+	return nil
+}
+
+func resolveWindowsUpdateFinalTargetPath(currentTarget string, sourcePath string) string {
+	currentTarget = strings.TrimSpace(currentTarget)
+	if currentTarget == "" {
+		return currentTarget
+	}
+	currentName := filepath.Base(currentTarget)
+	sourceName := filepath.Base(strings.TrimSpace(sourcePath))
+	if isVersionedWindowsUpdatePackageName(currentName) && isVersionedWindowsUpdatePackageName(sourceName) {
+		return filepath.Join(filepath.Dir(currentTarget), sourceName)
+	}
+	return currentTarget
+}
+
+func isVersionedWindowsUpdatePackageName(name string) bool {
+	trimmed := strings.TrimSpace(name)
+	lower := strings.ToLower(trimmed)
+	return strings.HasPrefix(trimmed, "GoNavi-") &&
+		strings.Contains(trimmed, "-Windows-") &&
+		strings.HasSuffix(lower, ".exe")
+}
+
+func prepareWindowsStagedUpdateAsset(sourcePath string, stagedDir string) (string, error) {
+	sourcePath = strings.TrimSpace(sourcePath)
+	stagedDir = strings.TrimSpace(stagedDir)
+	if sourcePath == "" || stagedDir == "" {
+		return sourcePath, nil
+	}
+	if isUpdateAssetPathInsideStagedDir(sourcePath, stagedDir) {
+		return sourcePath, nil
+	}
+	if err := os.MkdirAll(stagedDir, 0o755); err != nil {
+		return "", err
+	}
+	targetPath := filepath.Join(stagedDir, filepath.Base(sourcePath))
+	if cleanComparablePath(sourcePath) == cleanComparablePath(targetPath) {
+		return sourcePath, nil
+	}
+	_ = os.Remove(targetPath)
+	if err := os.Rename(sourcePath, targetPath); err == nil {
+		return targetPath, nil
+	}
+	if err := copyFileForWindowsUpdate(sourcePath, targetPath); err != nil {
+		return "", err
+	}
+	_ = os.Remove(sourcePath)
+	return targetPath, nil
+}
+
+func copyFileForWindowsUpdate(sourcePath string, targetPath string) error {
+	in, err := os.Open(sourcePath)
+	if err != nil {
+		return err
+	}
+	defer in.Close()
+	out, err := os.OpenFile(targetPath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0o644)
+	if err != nil {
+		return err
+	}
+	_, copyErr := io.Copy(out, in)
+	closeErr := out.Close()
+	if copyErr != nil {
+		return copyErr
+	}
+	return closeErr
+}
+
+func cleanupWindowsUpdateArtifacts(dirs []string, keep map[string]struct{}) {
+	seen := map[string]struct{}{}
+	for _, dir := range dirs {
+		dir = strings.TrimSpace(dir)
+		if dir == "" || dir == "." {
+			continue
+		}
+		cleanDir := cleanComparablePath(dir)
+		if cleanDir == "" {
+			continue
+		}
+		if _, ok := seen[cleanDir]; ok {
+			continue
+		}
+		seen[cleanDir] = struct{}{}
+		entries, err := os.ReadDir(dir)
+		if err != nil {
+			continue
+		}
+		for _, entry := range entries {
+			path := filepath.Join(dir, entry.Name())
+			cleanPath := cleanComparablePath(path)
+			if cleanPath == "" {
+				continue
+			}
+			if _, ok := keep[cleanPath]; ok {
+				continue
+			}
+			if shouldRemoveWindowsUpdateArtifact(entry.Name(), entry.IsDir()) {
+				if entry.IsDir() {
+					_ = os.RemoveAll(path)
+				} else {
+					_ = os.Remove(path)
+				}
+			}
+		}
+	}
+}
+
+func shouldRemoveWindowsUpdateArtifact(name string, isDir bool) bool {
+	trimmed := strings.TrimSpace(name)
+	lower := strings.ToLower(trimmed)
+	if trimmed == "" {
+		return false
+	}
+	if isDir {
+		return strings.HasPrefix(lower, ".gonavi-update-")
+	}
+	if strings.HasPrefix(lower, "gonavi-update-") && strings.HasSuffix(lower, ".log") {
+		return true
+	}
+	if !strings.HasPrefix(trimmed, "GoNavi-") {
+		return false
+	}
+	if !strings.Contains(trimmed, "-Windows-") {
+		return false
+	}
+	return strings.HasSuffix(lower, ".exe") || strings.HasSuffix(lower, ".zip")
+}
+
+func cleanComparablePath(path string) string {
+	path = strings.TrimSpace(path)
+	if path == "" {
+		return ""
+	}
+	cleaned := filepath.Clean(path)
+	if cleaned == "." {
+		return ""
+	}
+	if stdRuntime.GOOS == "windows" {
+		return strings.ToLower(cleaned)
+	}
+	return cleaned
+}
+
+func buildWindowsScriptWithCleanup(source, target, stagedDir, logPath string, pid int) string {
+	return buildWindowsScriptWithCurrentTargetCleanup(source, target, target, stagedDir, logPath, pid)
+}
+
+func buildWindowsScriptWithCurrentTargetCleanup(source, target, currentTarget, stagedDir, logPath string, pid int) string {
+	script := `@echo off
+setlocal EnableExtensions EnableDelayedExpansion
+set "SOURCE=__GONAVI_UPDATE_SOURCE__"
+set "TARGET=__GONAVI_UPDATE_TARGET__"
+set "CURRENT_TARGET=__GONAVI_CURRENT_TARGET__"
+set "TARGET_OLD=%TARGET%.old"
+set "STAGED=__GONAVI_UPDATE_STAGED__"
+set "LOG_FILE=__GONAVI_UPDATE_LOG__"
+set PID=__GONAVI_UPDATE_PID__
+set /a WAIT_PID_SECONDS=0
+
+call :log updater started
+if not exist "%SOURCE%" (
+  call :log source file not found: %SOURCE%
+  exit /b 1
+)
+
+for %%I in ("%TARGET%") do set "TARGET_NAME=%%~nxI"
+for %%I in ("%TARGET%") do set "TARGET_DIR=%%~dpI"
+for %%I in ("%SOURCE%") do set "SOURCE_EXT=%%~xI"
+set "SOURCE_EXE="
+
+if /I "%SOURCE_EXT%"==".zip" (
+  set "EXTRACT_DIR=%STAGED%\_extract"
+  if exist "%EXTRACT_DIR%" (
+    rmdir /S /Q "%EXTRACT_DIR%" >> "%LOG_FILE%" 2>&1
+  )
+  mkdir "%EXTRACT_DIR%" >> "%LOG_FILE%" 2>&1
+  powershell -NoProfile -ExecutionPolicy Bypass -Command "$src=$env:SOURCE; $dst=$env:EXTRACT_DIR; Expand-Archive -LiteralPath $src -DestinationPath $dst -Force" >> "%LOG_FILE%" 2>&1
+  if !ERRORLEVEL! NEQ 0 (
+    call :log expand zip failed: %SOURCE%
+    exit /b 1
+  )
+  if exist "%EXTRACT_DIR%\%TARGET_NAME%" (
+    set "SOURCE_EXE=%EXTRACT_DIR%\%TARGET_NAME%"
+  ) else (
+    for /R "%EXTRACT_DIR%" %%F in (*.exe) do (
+      if not defined SOURCE_EXE (
+        set "SOURCE_EXE=%%~fF"
+      )
+    )
+  )
+  if not defined SOURCE_EXE (
+    call :log no executable found in portable zip: %SOURCE%
+    exit /b 1
+  )
+) else (
+  set "SOURCE_EXE=%SOURCE%"
+)
+
+:waitloop
+tasklist /FI "PID eq %PID%" | find "%PID%" >nul
+if %ERRORLEVEL%==0 (
+  if !WAIT_PID_SECONDS! GEQ 90 (
+    call :log host process still running after !WAIT_PID_SECONDS! seconds, aborting update
+    exit /b 1
+  )
+  timeout /t 1 /nobreak >nul
+  set /a WAIT_PID_SECONDS+=1
+  goto waitloop
+)
+call :log host process exited
+
+timeout /t 3 /nobreak >nul
+call :log cooldown finished, starting file replace
+
+:replace_binary
+if /I "%SOURCE_EXE%"=="%TARGET%" (
+  call :log downloaded executable already at target path, skip replace
+  goto move_done
+)
+set /a RETRY=0
+:move_retry
+call :log attempt !RETRY!: trying rename-then-copy strategy
+move /Y "%TARGET%" "%TARGET_OLD%" >> "%LOG_FILE%" 2>&1
+if !ERRORLEVEL!==0 (
+  copy /Y "%SOURCE_EXE%" "%TARGET%" >> "%LOG_FILE%" 2>&1
+  if !ERRORLEVEL!==0 (
+    del /F /Q "%TARGET_OLD%" >> "%LOG_FILE%" 2>&1
+    goto move_done
+  )
+  call :log copy after rename failed, restoring old file
+  move /Y "%TARGET_OLD%" "%TARGET%" >> "%LOG_FILE%" 2>&1
+)
+
+call :log rename strategy failed, trying direct move
+move /Y "%SOURCE_EXE%" "%TARGET%" >> "%LOG_FILE%" 2>&1
+if %ERRORLEVEL%==0 goto move_done
+
+copy /Y "%SOURCE_EXE%" "%TARGET%" >> "%LOG_FILE%" 2>&1
+if %ERRORLEVEL%==0 goto move_done
+
+set /a RETRY+=1
+if !RETRY! LSS 15 (
+  set /a WAIT=1
+  if !RETRY! GEQ 3 set /a WAIT=2
+  if !RETRY! GEQ 6 set /a WAIT=3
+  if !RETRY! GEQ 9 set /a WAIT=5
+  call :log waiting !WAIT! seconds before retry
+  timeout /t !WAIT! /nobreak >nul
+  goto move_retry
+)
+
+call :log replace failed after retries (portable mode, no elevation): check directory write permission or file lock
+exit /b 1
+
+:move_done
+del /F /Q "%TARGET_OLD%" >> "%LOG_FILE%" 2>&1
+if /I not "%CURRENT_TARGET%"=="%TARGET%" (
+  if exist "%CURRENT_TARGET%" del /F /Q "%CURRENT_TARGET%" >> "%LOG_FILE%" 2>&1
+)
+if exist "%SOURCE%" del /F /Q "%SOURCE%" >> "%LOG_FILE%" 2>&1
+start "" /D "%TARGET_DIR%" "%TARGET%" >> "%LOG_FILE%" 2>&1
+if %ERRORLEVEL% NEQ 0 (
+  call :log cmd start failed, trying powershell Start-Process
+  powershell -NoProfile -ExecutionPolicy Bypass -Command "Start-Process -FilePath '%TARGET%' -WorkingDirectory '%TARGET_DIR%'" >> "%LOG_FILE%" 2>&1
+  if !ERRORLEVEL! NEQ 0 (
+    call :log relaunch failed
+    exit /b 1
+  )
+)
+call :log update finished
+start "" /MIN cmd.exe /D /C "timeout /t 2 /nobreak >nul & del /F /Q ""%LOG_FILE%"" >nul 2>&1 & rmdir /S /Q ""%STAGED%"" >nul 2>&1"
+exit /b 0
+
+:log
+echo [%date% %time%] %*>>"%LOG_FILE%"
+exit /b 0
+`
+	return strings.NewReplacer(
+		"__GONAVI_UPDATE_SOURCE__", source,
+		"__GONAVI_UPDATE_TARGET__", target,
+		"__GONAVI_CURRENT_TARGET__", currentTarget,
+		"__GONAVI_UPDATE_STAGED__", stagedDir,
+		"__GONAVI_UPDATE_LOG__", logPath,
+		"__GONAVI_UPDATE_PID__", strconv.Itoa(pid),
+	).Replace(strings.ReplaceAll(script, "\n", "\r\n"))
+}

internal/app/update_cleanup_test.go

@@ -0,0 +1,113 @@
+package app
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestShouldRemoveWindowsUpdateArtifact(t *testing.T) {
+	cases := []struct {
+		name  string
+		isDir bool
+		want  bool
+	}{
+		{name: "GoNavi-dev-abc-Windows-Amd64.exe", want: true},
+		{name: "GoNavi-0.8.4-Windows-Amd64.zip", want: true},
+		{name: "gonavi-update-windows-123.log", want: true},
+		{name: ".gonavi-update-windows-dev-dev-abc", isDir: true, want: true},
+		{name: "GoNavi-dev-abc-MacOS-Arm64.dmg", want: false},
+		{name: "GoNavi.exe", want: false},
+		{name: "notes.log", want: false},
+	}
+
+	for _, tc := range cases {
+		if got := shouldRemoveWindowsUpdateArtifact(tc.name, tc.isDir); got != tc.want {
+			t.Fatalf("shouldRemoveWindowsUpdateArtifact(%q, %v) = %v, want %v", tc.name, tc.isDir, got, tc.want)
+		}
+	}
+}
+
+func TestCleanupWindowsUpdateArtifactsKeepsCurrentTargetAndRemovesStalePackages(t *testing.T) {
+	dir := t.TempDir()
+	currentTarget := filepath.Join(dir, "GoNavi-dev-current-Windows-Amd64.exe")
+	currentPackage := filepath.Join(dir, "GoNavi-dev-new-Windows-Amd64.exe")
+	stalePackage := filepath.Join(dir, "GoNavi-dev-old-Windows-Amd64.exe")
+	staleLog := filepath.Join(dir, "gonavi-update-windows-123.log")
+	staleStage := filepath.Join(dir, ".gonavi-update-windows-dev-old")
+	otherFile := filepath.Join(dir, "notes.txt")
+
+	for _, path := range []string{currentTarget, currentPackage, stalePackage, staleLog, otherFile} {
+		if err := os.WriteFile(path, []byte("x"), 0o644); err != nil {
+			t.Fatalf("WriteFile(%q) returned error: %v", path, err)
+		}
+	}
+	if err := os.MkdirAll(staleStage, 0o755); err != nil {
+		t.Fatalf("MkdirAll returned error: %v", err)
+	}
+
+	cleanupWindowsUpdateArtifacts([]string{dir}, map[string]struct{}{
+		cleanComparablePath(currentTarget):  {},
+		cleanComparablePath(currentPackage): {},
+	})
+
+	for _, path := range []string{currentTarget, currentPackage, otherFile} {
+		if _, err := os.Stat(path); err != nil {
+			t.Fatalf("expected %q to remain: %v", path, err)
+		}
+	}
+	for _, path := range []string{stalePackage, staleLog, staleStage} {
+		if _, err := os.Stat(path); !os.IsNotExist(err) {
+			t.Fatalf("expected %q to be removed, stat err=%v", path, err)
+		}
+	}
+}
+
+func TestPrepareWindowsStagedUpdateAssetMovesPackageIntoStagedDir(t *testing.T) {
+	dir := t.TempDir()
+	stagedDir := filepath.Join(dir, ".gonavi-update-windows-dev-new")
+	source := filepath.Join(dir, "GoNavi-dev-new-Windows-Amd64.exe")
+	if err := os.WriteFile(source, []byte("payload"), 0o644); err != nil {
+		t.Fatalf("WriteFile returned error: %v", err)
+	}
+
+	prepared, err := prepareWindowsStagedUpdateAsset(source, stagedDir)
+	if err != nil {
+		t.Fatalf("prepareWindowsStagedUpdateAsset returned error: %v", err)
+	}
+	want := filepath.Join(stagedDir, filepath.Base(source))
+	if prepared != want {
+		t.Fatalf("expected prepared path %q, got %q", want, prepared)
+	}
+	if _, err := os.Stat(source); !os.IsNotExist(err) {
+		t.Fatalf("expected source to be moved away, stat err=%v", err)
+	}
+	if data, err := os.ReadFile(prepared); err != nil || string(data) != "payload" {
+		t.Fatalf("expected payload in staged file, data=%q err=%v", string(data), err)
+	}
+}
+
+func TestBuildWindowsScriptWithCleanupRemovesLogAndStagedDirectoryAfterSuccess(t *testing.T) {
+	script := buildWindowsScriptWithCleanup(
+		`C:\Users\tester\AppData\Local\Temp\gonavi-updates\.gonavi-update-windows-dev-new\GoNavi-dev-new-Windows-Amd64.exe`,
+		`C:\Users\tester\Desktop\GoNavi-dev-current-Windows-Amd64.exe`,
+		`C:\Users\tester\AppData\Local\Temp\gonavi-updates\.gonavi-update-windows-dev-new`,
+		`C:\Users\tester\AppData\Local\Temp\gonavi-updates\.gonavi-update-windows-dev-new\gonavi-update-windows-123.log`,
+		12345,
+	)
+
+	mustContain := []string{
+		`if exist "%SOURCE%" del /F /Q "%SOURCE%"`,
+		`del /F /Q ""%LOG_FILE%""`,
+		`rmdir /S /Q ""%STAGED%""`,
+	}
+	for _, token := range mustContain {
+		if !strings.Contains(script, token) {
+			t.Fatalf("expected script to contain %q\n%s", token, script)
+		}
+	}
+	if strings.Contains(script, `rmdir /S /Q "%STAGED%" >> "%LOG_FILE%"`) {
+		t.Fatalf("script should not synchronously remove staged dir while logging to it\n%s", script)
+	}
+}

internal/db/sql_pool.go

@@ -19,6 +19,12 @@ func configureSQLConnectionPool(db *sql.DB, dbType string) {
 	switch strings.ToLower(strings.TrimSpace(dbType)) {
 	case "sqlite", "duckdb":
 		return
+	case "oracle", "oceanbase":
+		db.SetMaxOpenConns(defaultSQLMaxOpenConns)
+		db.SetMaxIdleConns(1)
+		db.SetConnMaxIdleTime(defaultSQLConnMaxIdleTime)
+		db.SetConnMaxLifetime(defaultSQLConnMaxLifetime)
+		return
 	}
 	db.SetMaxOpenConns(defaultSQLMaxOpenConns)
 	db.SetMaxIdleConns(0)