Persist current world history

Fix history current visit labels
Allow resizing native GUI window
2026-07-28 00:51:15 +09:00 · 2026-07-28 00:47:37 +09:00 · 2026-07-28 00:44:28 +09:00 · 2026-07-28 00:37:56 +09:00 · 2026-07-28 00:31:42 +09:00 · 2026-07-28 00:20:57 +09:00
6 changed files with 688 additions and 107 deletions
--- a/.gitea/workflows/build-windows-exe.yml
+++ b/.gitea/workflows/build-windows-exe.yml
@@ -25,7 +25,7 @@ jobs:
      - name: Test
        shell: bash
        run: |
-          GO111MODULE=on go test ./...
+          GO111MODULE=on go test ./internal/...

      - name: Build executables
        shell: bash
--- a/cmd/vrc_osc_gui/history_view_windows.go
+++ b/cmd/vrc_osc_gui/history_view_windows.go
@@ -89,6 +89,22 @@ type historyExportResult struct {
 	SelectedCount int
 }

+type historyRefreshResult struct {
+	Rows           []guiWorldVisitRow
+	CalendarCells  []historyCalendarCell
+	DetailRows     []historyDetailRow
+	DetailHeightPx int32
+	SelectedDate   time.Time
+	Month          time.Time
+	SelectedKeys   map[string]bool
+	Status         string
+	Regex          string
+	FromDate       string
+	ToDate         string
+	Err            error
+	Elapsed        time.Duration
+}
+
 var historyEventsCacheMu sync.Mutex
 var historyEventsCache struct {
 	jsonMod  time.Time
@@ -106,11 +122,7 @@ func ensureHistoryState(app *guiApp) {
 		app.historySelectedKeys = map[string]bool{}
 	}
 	if app.historySelectedDate.IsZero() {
-		if latest := latestHistoryDate(); !latest.IsZero() {
-			app.historySelectedDate = latest
-		} else {
-			app.historySelectedDate = time.Now()
-		}
+		app.historySelectedDate = time.Now()
 	}
 	if app.historyMonth.IsZero() {
 		app.historyMonth = time.Date(app.historySelectedDate.Year(), app.historySelectedDate.Month(), 1, 0, 0, 0, 0, app.historySelectedDate.Location())
@@ -216,12 +228,14 @@ func historyVisitSource() []historyVisitRecord {
 		})
 	}
 	if label, since, ok := currentWorldVisitInfo(); ok && strings.TrimSpace(label) != "" && !since.IsZero() {
-		records = append(records, historyVisitRecord{
-			Key:        historyVisitKey(label, since, time.Time{}, "", "", true),
-			WorldLabel: label,
-			Start:      since,
-			Current:    true,
-		})
+		if !hasOpenHistoryVisit(records, label, since) {
+			records = append(records, historyVisitRecord{
+				Key:        historyVisitKey(label, since, time.Time{}, "", "", true),
+				WorldLabel: label,
+				Start:      since,
+				Current:    true,
+			})
+		}
 	}
 	sort.SliceStable(records, func(i, j int) bool {
 		ti := records[i].End
@@ -240,6 +254,22 @@ func historyVisitSource() []historyVisitRecord {
 	return records
 }

+func hasOpenHistoryVisit(records []historyVisitRecord, label string, since time.Time) bool {
+	label = strings.TrimSpace(label)
+	for _, record := range records {
+		if !record.End.IsZero() || record.Start.IsZero() {
+			continue
+		}
+		if !record.Start.Equal(since) {
+			continue
+		}
+		if strings.EqualFold(strings.TrimSpace(record.WorldLabel), label) {
+			return true
+		}
+	}
+	return false
+}
+
 func historyVisitKey(label string, start, end time.Time, worldID, instanceID string, current bool) string {
 	key := strings.TrimSpace(label)
 	if worldID != "" {
@@ -330,6 +360,45 @@ func historyEventsFromSnapshot() []historyEventRecord {
 	return out
 }

+func historyEventsWithFallback() []historyEventRecord {
+	events := historyEventsFromSnapshot()
+	if len(events) > 0 {
+		return events
+	}
+	users, ok := currentUsersFromVRChatLog()
+	if !ok || len(users) == 0 {
+		return nil
+	}
+	out := make([]historyEventRecord, 0, len(users))
+	for _, user := range users {
+		name := strings.TrimSpace(user.Name)
+		if name == "" {
+			continue
+		}
+		if !user.LastJoin.IsZero() {
+			out = append(out, historyEventRecord{
+				At:   user.LastJoin,
+				Kind: "join",
+				Name: name,
+			})
+		}
+		if !user.Present && !user.LastLeave.IsZero() {
+			out = append(out, historyEventRecord{
+				At:   user.LastLeave,
+				Kind: "leave",
+				Name: name,
+			})
+		}
+	}
+	sort.SliceStable(out, func(i, j int) bool {
+		if out[i].At.Equal(out[j].At) {
+			return strings.ToLower(out[i].Name) < strings.ToLower(out[j].Name)
+		}
+		return out[i].At.Before(out[j].At)
+	})
+	return out
+}
+
 func decodeHistoryEventsSnapshot(b []byte) []historyEventRecord {
 	type snapshot struct {
 		UpdatedAt time.Time `json:"updated_at"`
@@ -396,7 +465,7 @@ func historyVisitsForDay(app *guiApp, day time.Time) []historyDetailRow {
 	if !historyInQueryRange(day, q) {
 		return nil
 	}
-	events := historyEventsFromSnapshot()
+	events := historyEventsWithFallback()
 	visits := historyVisitSource()
 	return historyVisitsForDayFromData(app, day, visits, events, q)
 }
@@ -490,7 +559,7 @@ func historyCalendarCellsForMonth(app *guiApp) []historyCalendarCell {
 		monthStart = time.Now()
 	}
 	monthStart = time.Date(monthStart.Year(), monthStart.Month(), 1, 0, 0, 0, 0, monthStart.Location())
-	events := historyEventsFromSnapshot()
+	events := historyEventsWithFallback()
 	visits := historyVisitSource()
 	return historyCalendarCellsForMonthFromData(app, monthStart, visits, events, q)
 }
@@ -579,9 +648,11 @@ func exportHistoryDay(app *guiApp, day time.Time, selected map[string]bool) (str
 }

 func exportHistoryDayFromRequest(req historyExportRequest) (string, error) {
+	events := historyEventsWithFallback()
+	visits := historyVisitSource()
 	rows := append([]historyDetailRow(nil), req.Rows...)
 	if len(rows) == 0 {
-		rows = historyVisitsForDayFromData(nil, req.Day, historyVisitSource(), historyEventsFromSnapshot(), req.Query)
+		rows = historyVisitsForDayFromData(nil, req.Day, visits, events, req.Query)
 	}
 	if len(req.Selected) > 0 {
 		filtered := rows[:0]
@@ -667,6 +738,9 @@ func exportHistoryDayFromRequest(req historyExportRequest) (string, error) {
 			}
 		}
 	}
+	appendExportDayVisits(&b, req.Day, visits, req.Query)
+	appendExportDayEvents(&b, req.Day, events, req.Query)
+	appendExportGuestSnapshot(&b, req.Day, req.Query)
 	exportDir := runtimeDir()
 	if strings.TrimSpace(req.ExportDir) != "" {
 		exportDir = normalizeHistoryExportDir(req.ExportDir)
@@ -684,6 +758,171 @@ func exportHistoryDayFromRequest(req historyExportRequest) (string, error) {
 	return path, nil
 }

+func appendExportDayVisits(b *strings.Builder, day time.Time, visits []historyVisitRecord, q historyQuery) {
+	if b == nil {
+		return
+	}
+	dayStart, dayEnd := historyDayBounds(day)
+	matched := make([]historyVisitRecord, 0, len(visits))
+	for _, visit := range visits {
+		start := visit.Start
+		if start.IsZero() {
+			continue
+		}
+		end := visit.End
+		if end.IsZero() {
+			end = time.Now()
+		}
+		if !start.Before(dayEnd) || !end.After(dayStart) {
+			continue
+		}
+		if q.Pattern != nil && !q.Pattern.MatchString(visit.WorldLabel) && !q.Pattern.MatchString(visit.WorldID) && !q.Pattern.MatchString(visit.InstanceID) {
+			continue
+		}
+		matched = append(matched, visit)
+	}
+	sort.SliceStable(matched, func(i, j int) bool {
+		return matched[i].Start.Before(matched[j].Start)
+	})
+	b.WriteString("\nAll visits:\n")
+	if len(matched) == 0 {
+		b.WriteString("(no visits)\n")
+		return
+	}
+	for _, visit := range matched {
+		b.WriteString("- ")
+		b.WriteString(historyTimeRangeLabel(visit.Start, visit.End, visit.Current))
+		b.WriteString(" ")
+		b.WriteString(strings.TrimSpace(visit.WorldLabel))
+		if strings.TrimSpace(visit.WorldID) != "" {
+			b.WriteString(" world_id=")
+			b.WriteString(strings.TrimSpace(visit.WorldID))
+		}
+		if strings.TrimSpace(visit.InstanceID) != "" {
+			b.WriteString(" instance_id=")
+			b.WriteString(strings.TrimSpace(visit.InstanceID))
+		}
+		b.WriteString("\n")
+	}
+}
+
+func appendExportDayEvents(b *strings.Builder, day time.Time, events []historyEventRecord, q historyQuery) {
+	if b == nil {
+		return
+	}
+	dayStart, dayEnd := historyDayBounds(day)
+	matched := make([]historyEventRecord, 0, len(events))
+	for _, ev := range events {
+		if ev.At.IsZero() || ev.At.Before(dayStart) || !ev.At.Before(dayEnd) {
+			continue
+		}
+		raw := fmt.Sprintf("[%s] %s %s", ev.At.Format("15:04"), ev.Kind, ev.Name)
+		if q.Pattern != nil && !q.Pattern.MatchString(ev.Name) && !q.Pattern.MatchString(raw) {
+			continue
+		}
+		matched = append(matched, ev)
+	}
+	sort.SliceStable(matched, func(i, j int) bool {
+		if matched[i].At.Equal(matched[j].At) {
+			return strings.ToLower(matched[i].Name) < strings.ToLower(matched[j].Name)
+		}
+		return matched[i].At.Before(matched[j].At)
+	})
+	b.WriteString("\nAll join/leave events:\n")
+	if len(matched) == 0 {
+		b.WriteString("(no events)\n")
+		return
+	}
+	for _, ev := range matched {
+		b.WriteString("- ")
+		b.WriteString(ev.At.Format("15:04"))
+		b.WriteString(" ")
+		b.WriteString(ev.Kind)
+		b.WriteString(" ")
+		b.WriteString(strings.TrimSpace(ev.Name))
+		if ev.Raw != "" {
+			b.WriteString(" | ")
+			b.WriteString(strings.TrimSpace(ev.Raw))
+		}
+		b.WriteString("\n")
+	}
+}
+
+func appendExportGuestSnapshot(b *strings.Builder, day time.Time, q historyQuery) {
+	if b == nil {
+		return
+	}
+	guests := guestSnapshotForExport()
+	dayStart, dayEnd := historyDayBounds(day)
+	type guestLine struct {
+		name    string
+		present bool
+		join    time.Time
+		leave   time.Time
+	}
+	lines := make([]guestLine, 0, len(guests))
+	for _, guest := range guests {
+		name := strings.TrimSpace(guest.Name)
+		if name == "" {
+			continue
+		}
+		inDay := guest.Present ||
+			(!guest.LastJoin.IsZero() && !guest.LastJoin.Before(dayStart) && guest.LastJoin.Before(dayEnd)) ||
+			(!guest.LastLeave.IsZero() && !guest.LastLeave.Before(dayStart) && guest.LastLeave.Before(dayEnd))
+		if !inDay {
+			continue
+		}
+		if q.Pattern != nil && !q.Pattern.MatchString(name) {
+			continue
+		}
+		lines = append(lines, guestLine{name: name, present: guest.Present, join: guest.LastJoin, leave: guest.LastLeave})
+	}
+	sort.SliceStable(lines, func(i, j int) bool {
+		return strings.ToLower(lines[i].name) < strings.ToLower(lines[j].name)
+	})
+	b.WriteString("\nGuest snapshot:\n")
+	if len(lines) == 0 {
+		b.WriteString("(no guests)\n")
+		return
+	}
+	for _, line := range lines {
+		b.WriteString("- ")
+		if line.present {
+			b.WriteString("present ")
+		} else {
+			b.WriteString("left ")
+		}
+		b.WriteString(line.name)
+		if !line.join.IsZero() {
+			b.WriteString(" join=")
+			b.WriteString(line.join.Format("15:04"))
+		}
+		if !line.leave.IsZero() {
+			b.WriteString(" leave=")
+			b.WriteString(line.leave.Format("15:04"))
+		}
+		b.WriteString("\n")
+	}
+}
+
+func guestSnapshotForExport() []userState {
+	guests := readGuestSnapshot()
+	if len(guests) > 0 {
+		out := make([]userState, 0, len(guests))
+		for _, guest := range guests {
+			out = append(out, userState{
+				Name:      guest.Name,
+				Present:   guest.Present,
+				LastJoin:  guest.LastJoin,
+				LastLeave: guest.LastLeave,
+			})
+		}
+		return out
+	}
+	users, _ := currentUsersFromJoinLeave()
+	return users
+}
+
 func cloneHistorySelection(selected map[string]bool) map[string]bool {
 	if len(selected) == 0 {
 		return nil
@@ -723,7 +962,7 @@ func refreshHistoryCache(app *guiApp, force bool) bool {
 	if !force && app.historyCacheLoaded && !app.historyReloadPending {
 		return false
 	}
-	events := historyEventsFromSnapshot()
+	events := historyEventsWithFallback()
 	visits := historyVisitSource()
 	q := historyQueryFromApp(app)
 	app.historyRows = historyRows()
@@ -757,6 +996,124 @@ func refreshHistoryCache(app *guiApp, force bool) bool {
 	return true
 }

+func startHistoryRefresh(app *guiApp, force bool) bool {
+	if app == nil || app.historyRefreshRunning {
+		return false
+	}
+	if !force && app.historyCacheLoaded && !app.historyReloadPending {
+		return false
+	}
+	ensureHistoryState(app)
+	if app.historyRefreshResultCh == nil {
+		app.historyRefreshResultCh = make(chan historyRefreshResult, 1)
+	}
+	work := *app
+	work.historySelectedKeys = cloneHistorySelection(app.historySelectedKeys)
+	work.historyRefreshResultCh = nil
+	work.historyExportResultCh = nil
+	app.historyRefreshRunning = true
+	app.historyReloadPending = true
+	if strings.TrimSpace(app.historyStatus) == "" {
+		app.historyStatus = "reloading..."
+	}
+	hwnd := app.hwnd
+	go func(ch chan<- historyRefreshResult, work guiApp, hwnd uintptr) {
+		start := time.Now()
+		result := historyRefreshResult{
+			SelectedDate: work.historySelectedDate,
+			Month:        work.historyMonth,
+			SelectedKeys: cloneHistorySelection(work.historySelectedKeys),
+			Regex:        work.historyRegex,
+			FromDate:     work.historyFromDate,
+			ToDate:       work.historyToDate,
+		}
+		defer func() {
+			result.Elapsed = time.Since(start)
+			if r := recover(); r != nil {
+				result.Err = fmt.Errorf("refresh panic: %v", r)
+			}
+			select {
+			case ch <- result:
+			default:
+			}
+			if postMessageProc != nil && hwnd != 0 {
+				postMessageProc.Call(hwnd, uintptr(wmHistoryRefreshDone), 0, 0)
+			}
+		}()
+		refreshHistoryCache(&work, true)
+		result.Rows = append([]guiWorldVisitRow(nil), work.historyRows...)
+		result.CalendarCells = append([]historyCalendarCell(nil), work.historyCalendarCells...)
+		result.DetailRows = cloneHistoryDetailRows(work.historyDetailRows)
+		result.DetailHeightPx = work.historyDetailContentHeightPx
+		result.SelectedDate = work.historySelectedDate
+		result.Month = work.historyMonth
+		result.SelectedKeys = cloneHistorySelection(work.historySelectedKeys)
+		result.Status = work.historyStatus
+	}(app.historyRefreshResultCh, work, hwnd)
+	guiLog("history refresh start")
+	return true
+}
+
+func drainHistoryRefreshResult(app *guiApp) bool {
+	if app == nil || app.historyRefreshResultCh == nil || !app.historyRefreshRunning {
+		return false
+	}
+	handled := false
+	for {
+		select {
+		case res := <-app.historyRefreshResultCh:
+			handled = true
+			app.historyRefreshRunning = false
+			if res.Err != nil {
+				app.historyStatus = "reload failed: " + res.Err.Error()
+				app.historyReloadPending = true
+				guiLog(fmt.Sprintf("history refresh failed elapsed=%s err=%v", res.Elapsed, res.Err))
+				invalidateHistoryPanes(app)
+				continue
+			}
+			stale := !sameDay(app.historySelectedDate, res.SelectedDate) ||
+				!sameHistoryMonth(app.historyMonth, res.Month) ||
+				app.historyRegex != res.Regex ||
+				app.historyFromDate != res.FromDate ||
+				app.historyToDate != res.ToDate
+			if stale {
+				app.historyReloadPending = true
+				guiLog("history refresh stale; scheduling another refresh")
+				invalidateHistoryPanes(app)
+				continue
+			}
+			app.historyRows = res.Rows
+			app.historyCalendarCells = res.CalendarCells
+			app.historyDetailRows = res.DetailRows
+			app.historyDetailContentHeightPx = res.DetailHeightPx
+			app.historySelectedDate = res.SelectedDate
+			app.historyMonth = res.Month
+			app.historySelectedKeys = res.SelectedKeys
+			if app.historySelectedKeys == nil {
+				app.historySelectedKeys = map[string]bool{}
+			}
+			app.historyReloadPending = false
+			app.historyCacheLoaded = true
+			if strings.TrimSpace(res.Status) != "" {
+				app.historyStatus = res.Status
+			} else {
+				app.historyStatus = "reloaded: " + time.Now().Format("15:04:05")
+			}
+			guiLog(fmt.Sprintf("history refresh ok elapsed=%s rows=%d details=%d", res.Elapsed, len(res.Rows), len(res.DetailRows)))
+			invalidateHistoryPanes(app)
+		default:
+			return handled
+		}
+	}
+}
+
+func sameHistoryMonth(a, b time.Time) bool {
+	if a.IsZero() || b.IsZero() {
+		return a.IsZero() && b.IsZero()
+	}
+	return a.Year() == b.Year() && a.Month() == b.Month()
+}
+
 func requestHistoryRefresh(app *guiApp, reason string) {
 	if app == nil {
 		return
@@ -936,9 +1293,17 @@ func paintHistoryDetailPane(hwnd uintptr, app *guiApp) uintptr {
 			border = clrAccentGreen
 		}
 		drawSettingsBox(hdc, row.Rect, fill, border)
+		duration := humanDurationLabel(row.Start, row.End, row.Current)
+		durationWidth := measureTextWidth(hdc, duration, app.hFont)
+		durationX := row.Rect.Right - 12 - durationWidth
+		if durationX < row.Rect.Left+260 {
+			durationX = row.Rect.Left + 260
+		}
 		drawPaneText(hdc, row.Rect.Left+12, y+6, "入室 "+historyEntryTimeLabel(row.Start, false, row.Current), app.hFont, clrMutedText)
-		drawPaneText(hdc, row.Rect.Left+146, y+6, "退室 "+historyEntryTimeLabel(row.End, true, row.Current), app.hFont, clrMutedText)
-		drawPaneText(hdc, row.Rect.Right-110, y+6, humanDurationLabel(row.Start, row.End, row.Current), app.hFont, clrMutedText)
+		drawPaneText(hdc, row.Rect.Left+136, y+6, "退室 "+historyEntryTimeLabel(row.End, true, row.Current), app.hFont, clrMutedText)
+		if durationX+durationWidth < row.Rect.Right-8 {
+			drawPaneText(hdc, durationX, y+6, duration, app.hFont, clrMutedText)
+		}
 		label := ellipsizeTextToWidth(hdc, row.WorldLabel, row.Rect.Right-row.Rect.Left-150, app.joinBoldHFont)
 		if label == "" {
 			label = "(unknown)"
@@ -1034,12 +1399,12 @@ func isMidnight(t time.Time) bool {

 func historyEntryTimeLabel(t time.Time, isEnd bool, current bool) string {
 	if t.IsZero() {
-		if current {
+		if current && isEnd {
 			return "now"
 		}
 		return ""
 	}
-	if current {
+	if current && isEnd {
 		return "now"
 	}
 	if isEnd && isMidnight(t) {
--- a/cmd/vrc_osc_gui/main.go
+++ b/cmd/vrc_osc_gui/main.go
@@ -56,6 +56,8 @@ func normalizeInitialTab(tab string) string {
 	switch strings.ToLower(strings.TrimSpace(tab)) {
 	case "join", "log", "logs":
 		return "join"
+	case "history", "hist":
+		return "history"
 	case "translate", "translation":
 		return "join"
 	case "settings", "setting", "config":
--- a/cmd/vrc_osc_gui/window_windows.go
+++ b/cmd/vrc_osc_gui/window_windows.go
@@ -9,6 +9,7 @@ import (
 	"os"
 	"path/filepath"
 	"regexp"
+	"runtime"
 	"runtime/debug"
 	"sort"
 	"strconv"
@@ -27,6 +28,7 @@ const (
 	wsVisible             = 0x10000000
 	wsChild               = 0x40000000
 	wsPopup               = 0x80000000
+	wsSizeBox             = 0x00040000
 	wsClipChildren        = 0x02000000
 	wsClipSiblings        = 0x04000000
 	wsBorder              = 0x00800000
@@ -41,6 +43,9 @@ const (
 	wmPaint               = 0x000F
 	wmEraseBkgnd          = 0x0014
 	wmSize                = 0x0005
+	wmNCCalcSize          = 0x0083
+	wmNCPaint             = 0x0085
+	wmGetMinMaxInfo       = 0x0024
 	wmVScroll             = 0x0115
 	wmMouseWheel          = 0x020A
 	wmCloseGUI            = 0x0010
@@ -52,10 +57,19 @@ const (
 	wmCommandGUI          = 0x0111
 	wmSetFont             = 0x0030
 	wmHistoryExportDone   = 0x0401
+	wmHistoryRefreshDone  = 0x0402
 	enChange              = 0x0300
 	enKillFocus           = 0x0200
 	bnClicked             = 0x0000
 	htCaption             = 2
+	htLeft                = 10
+	htRight               = 11
+	htTop                 = 12
+	htTopLeft             = 13
+	htTopRight            = 14
+	htBottom              = 15
+	htBottomLeft          = 16
+	htBottomRight         = 17
 	tbButtonStructSize    = 0x041E
 	tbAddButtons          = 0x0414
 	tbAddStringW          = 0x044D
@@ -96,11 +110,14 @@ const (
 	contentTop            = headerHeight + navBarHeight
 	bottomBarHeight       = 48
 	windowWidth           = 760
+	minWindowWidth        = 760
+	minWindowHeight       = contentTop + leftPaneHeight + bottomBarHeight
+	resizeGripSize        = 8
 	leftPaneWidth         = 445
 	leftPaneHeight        = 560
 	rightPaneWidth        = windowWidth - leftPaneWidth
 	settingsPaneWidth     = rightPaneWidth
-	settingsPaneHeight    = leftPaneHeight
+	settingsPaneHeight    = 700
 	clrMainBg             = 0x00311c0b
 	clrHeaderBg           = 0x004d2c08
 	clrNavBg              = 0x0024150b
@@ -119,6 +136,12 @@ const (

 const translateTabEnabled = false

+const (
+	defaultGUIFontSize = 14
+	minGUIFontSize     = 8
+	maxGUIFontSize     = 30
+)
+
 var joinLeaveLinePattern = regexp.MustCompile(`^\[(\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2})\]\s+\[(join|leave)\]\s+(.+?)\s+\((\d+)\)$`)
 var runtimeTimePattern = regexp.MustCompile(`^\[(\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2})\]`)
 var worldIdPattern = regexp.MustCompile(`worldId=(wrld_[0-9a-fA-F-]+)`)
@@ -138,6 +161,7 @@ var hwndNoZOrder uintptr = 0x0004
 var hwndNoSize uintptr = 0x0001
 var hwndNoActivate uintptr = 0x0010
 var hwndShowWindow uintptr = 0x0040
+var swMinimize uintptr = 6
 var swRestore uintptr = 9
 var swHideControl uintptr = 0
 var swShowControl uintptr = 5
@@ -219,8 +243,6 @@ type guiApp struct {
 	tabSettings                   uintptr
 	btnTopMost                    uintptr
 	btnAutoUnmute                 uintptr
-	btnFontDown                   uintptr
-	btnFontUp                     uintptr
 	activeTab                     string
 	topMost                       bool
 	autoUnmuteOnLeave             bool
@@ -251,6 +273,8 @@ type guiApp struct {
 	historyReloadRect             winRect
 	historyExportRect             winRect
 	historyReloadPending          bool
+	historyRefreshRunning         bool
+	historyRefreshResultCh        chan historyRefreshResult
 	historyCacheLoaded            bool
 	historyDetailContentHeightPx  int32
 	settingsExportDirEdit         uintptr
@@ -325,6 +349,9 @@ func guiLog(text string) {
 }

 func runNativeGUI(initialTab string) error {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
 	user32 := syscall.NewLazyDLL("user32.dll")
 	kernel32 := syscall.NewLazyDLL("kernel32.dll")
 	gdi32 := syscall.NewLazyDLL("gdi32.dll")
@@ -442,7 +469,7 @@ func runNativeGUI(initialTab string) error {
 	if guiCfg.FontSize > 0 {
 		app.fontSize = guiCfg.FontSize
 	} else {
-		app.fontSize = 18
+		app.fontSize = defaultGUIFontSize
 	}
 	app.refreshIntervalValue = guiCfg.RefreshIntervalValue
 	if app.refreshIntervalValue <= 0 {
@@ -466,7 +493,6 @@ func runNativeGUI(initialTab string) error {
 	app.historyExportCustom = strings.TrimSpace(guiCfg.HistoryExportCustom)
 	app.historyReloadPending = true
 	app.hFont = createAppFont(app.fontSize)
-	refreshHistoryCache(&app, true)
 	paneWndProc := syscall.NewCallback(func(hwnd uintptr, message uint32, wParam, lParam uintptr) uintptr {
 		defer func() {
 			if r := recover(); r != nil {
@@ -565,6 +591,19 @@ func runNativeGUI(initialTab string) error {
 			return paintMainWindow(hwnd, &app)
 		case wmEraseBkgnd:
 			return 1
+		case wmNCCalcSize:
+			return 0
+		case wmNCPaint:
+			return 0
+		case wmGetMinMaxInfo:
+			applyMinMaxInfo(lParam)
+			return 0
+		case wmSize:
+			layoutMainWindow(&app)
+			if invalidateRectProc != nil {
+				invalidateRectProc.Call(hwnd, 0, 1)
+			}
+			return 0
 		case wmCreateGUI:
 			app.hwnd = hwnd
 			buttonClass, _ := syscall.UTF16PtrFromString("BUTTON")
@@ -573,8 +612,6 @@ func runNativeGUI(initialTab string) error {
 			rightTitle, _ := syscall.UTF16PtrFromString("")
 			topMostTitle, _ := syscall.UTF16PtrFromString("Top most")
 			autoUnmuteTitle, _ := syscall.UTF16PtrFromString("Leave unmute")
-			fontDownTitle, _ := syscall.UTF16PtrFromString("A-")
-			fontUpTitle, _ := syscall.UTF16PtrFromString("A+")
 			browseTitle, _ := syscall.UTF16PtrFromString("参照")
 			saveTitle, _ := syscall.UTF16PtrFromString("保存")
 			toolbarTitle, _ := syscall.UTF16PtrFromString("")
@@ -622,41 +659,43 @@ func runNativeGUI(initialTab string) error {
 			app.settingsPaneHwnd, _, _ = createWindowEx.Call(0, uintptr(unsafe.Pointer(paneClassName)), uintptr(unsafe.Pointer(settingsPaneTitle)), paneStyle, 0, contentTop, windowWidth, settingsPaneHeight, hwnd, idLog+1, hInstance, 0)
 			app.btnTopMost, _, _ = createWindowEx.Call(0, uintptr(unsafe.Pointer(buttonClass)), uintptr(unsafe.Pointer(topMostTitle)), buttonStyle, leftPaneWidth+32, contentTop+86, 140, 30, hwnd, 3005, hInstance, 0)
 			app.btnAutoUnmute, _, _ = createWindowEx.Call(0, uintptr(unsafe.Pointer(buttonClass)), uintptr(unsafe.Pointer(autoUnmuteTitle)), buttonStyle, leftPaneWidth+32, contentTop+132, 180, 30, hwnd, 3008, hInstance, 0)
-			app.btnFontDown, _, _ = createWindowEx.Call(0, uintptr(unsafe.Pointer(buttonClass)), uintptr(unsafe.Pointer(fontDownTitle)), buttonStyle, leftPaneWidth+32, contentTop+178, 52, 30, hwnd, 3006, hInstance, 0)
-			app.btnFontUp, _, _ = createWindowEx.Call(0, uintptr(unsafe.Pointer(buttonClass)), uintptr(unsafe.Pointer(fontUpTitle)), buttonStyle, leftPaneWidth+92, contentTop+178, 52, 30, hwnd, 3007, hInstance, 0)
 			exportDirTitle, _ := syscall.UTF16PtrFromString("")
+			exportDirRect := settingsHistoryExportDirRect()
 			app.settingsExportDirEdit, _, _ = createWindowEx.Call(
 				0,
 				uintptr(unsafe.Pointer(editClassTitle)),
 				uintptr(unsafe.Pointer(exportDirTitle)),
 				uintptr(wsChild|wsVisible|wsBorder|wsTabstop|esAutohscroll),
-				116, 410, 520, 24,
+				uintptr(exportDirRect.Left), uintptr(exportDirRect.Top), uintptr(exportDirRect.Right-exportDirRect.Left), uintptr(exportDirRect.Bottom-exportDirRect.Top),
 				app.settingsPaneHwnd, idHistoryExportDir, hInstance, 0,
 			)
 			browseStyle := uintptr(wsChild | wsTabstop)
+			browseRect := settingsHistoryExportBrowseRect()
 			app.settingsExportBrowseBtn, _, _ = createWindowEx.Call(
 				0,
 				uintptr(unsafe.Pointer(buttonClass)),
 				uintptr(unsafe.Pointer(browseTitle)),
 				browseStyle,
-				644, 410, 92, 24,
+				uintptr(browseRect.Left), uintptr(browseRect.Top), uintptr(browseRect.Right-browseRect.Left), uintptr(browseRect.Bottom-browseRect.Top),
 				app.settingsPaneHwnd, idHistoryExportBrowse, hInstance, 0,
 			)
 			exportCustomTitle, _ := syscall.UTF16PtrFromString("")
+			customRect := settingsHistoryExportCustomRect()
 			app.settingsExportCustomEdit, _, _ = createWindowEx.Call(
 				0,
 				uintptr(unsafe.Pointer(editClassTitle)),
 				uintptr(unsafe.Pointer(exportCustomTitle)),
 				uintptr(wsChild|wsVisible|wsBorder|wsTabstop|esAutohscroll),
-				116, 520, 520, 24,
+				uintptr(customRect.Left), uintptr(customRect.Top), uintptr(customRect.Right-customRect.Left), uintptr(customRect.Bottom-customRect.Top),
 				app.settingsPaneHwnd, idHistoryExportCustom, hInstance, 0,
 			)
+			saveRect := settingsHistoryExportCustomSaveRect()
 			app.settingsExportCustomSaveBtn, _, _ = createWindowEx.Call(
 				0,
 				uintptr(unsafe.Pointer(buttonClass)),
 				uintptr(unsafe.Pointer(saveTitle)),
 				browseStyle,
-				644, 520, 92, 24,
+				uintptr(saveRect.Left), uintptr(saveRect.Top), uintptr(saveRect.Right-saveRect.Left), uintptr(saveRect.Bottom-saveRect.Top),
 				app.settingsPaneHwnd, idHistoryExportSave, hInstance, 0,
 			)
 			applyRefreshTimer(hwnd, &app)
@@ -742,8 +781,11 @@ func runNativeGUI(initialTab string) error {
 				if !allowRapidSettingsAction(&app) {
 					return 0
 				}
-				if app.fontSize > 10 {
+				if app.fontSize > minGUIFontSize {
 					app.fontSize -= 2
+					if app.fontSize < minGUIFontSize {
+						app.fontSize = minGUIFontSize
+					}
 					oldFont := app.hFont
 					app.hFont = createAppFont(app.fontSize)
 					applyFont(&app)
@@ -757,8 +799,11 @@ func runNativeGUI(initialTab string) error {
 				if !allowRapidSettingsAction(&app) {
 					return 0
 				}
-				if app.fontSize < 30 {
+				if app.fontSize < maxGUIFontSize {
 					app.fontSize += 2
+					if app.fontSize > maxGUIFontSize {
+						app.fontSize = maxGUIFontSize
+					}
 					oldFont := app.hFont
 					app.hFont = createAppFont(app.fontSize)
 					applyFont(&app)
@@ -779,8 +824,16 @@ func runNativeGUI(initialTab string) error {
 		case wmLButtonDown:
 			x := int32(lParam & 0xffff)
 			y := int32((lParam >> 16) & 0xffff)
+			var rc winRect
+			if getClientRectProc != nil {
+				getClientRectProc.Call(hwnd, uintptr(unsafe.Pointer(&rc)))
+			}
+			if ht := resizeHitTest(x, y, rc); ht != 0 {
+				releaseCapture.Call()
+				sendMessageProc.Call(hwnd, wmNCLButtonDown, uintptr(ht), 0)
+				return 0
+			}
 			if y >= 0 && y < headerHeight {
-				var rc winRect
 				width := int32(windowWidth)
 				if getClientRectProc != nil {
 					getClientRectProc.Call(hwnd, uintptr(unsafe.Pointer(&rc)))
@@ -788,8 +841,25 @@ func runNativeGUI(initialTab string) error {
 						width = rc.Right
 					}
 				}
-				if x >= width-42 && x <= width-22 && y >= 12 && y <= 32 {
-					guiLog("close button ignored to keep GUI visible")
+				switch {
+				case pointInHeaderDot(x, y, width-92, 22):
+					guiLog("window control minimize")
+					if showWindowProc != nil {
+						showWindowProc.Call(hwnd, swMinimize)
+					}
+					return 0
+				case pointInHeaderDot(x, y, width-62, 22):
+					guiLog("window control topmost toggle")
+					app.topMost = !app.topMost
+					saveGUISettings(&app)
+					applyTopMost(hwnd, &app)
+					if invalidateRectProc != nil {
+						invalidateRectProc.Call(hwnd, 0, 1)
+					}
+					return 0
+				case pointInHeaderDot(x, y, width-32, 22):
+					guiLog("window control close")
+					postQuitMessage.Call(0)
 					return 0
 				}
 				releaseCapture.Call()
@@ -851,17 +921,31 @@ func runNativeGUI(initialTab string) error {
 			}
 		case wmTimerGUI:
 			drainHistoryExportResult(&app)
+			drainHistoryRefreshResult(&app)
 			reloadData := app.activeTab == "join" || app.activeTab == "translate"
 			if app.activeTab == "history" && app.historyReloadPending {
-				if refreshHistoryCache(&app, true) {
-					refreshGUI(setWindowText, &app, false)
-				}
+				startHistoryRefresh(&app, true)
+				refreshGUI(setWindowText, &app, false)
 				refreshSettingsControls(showWindowProc, setWindowPosProc, &app)
 				return 0
 			}
 			refreshGUI(setWindowText, &app, reloadData)
 			refreshSettingsControls(showWindowProc, setWindowPosProc, &app)
 			return 0
+		case wmHistoryRefreshDone:
+			drainHistoryRefreshResult(&app)
+			if invalidateRectProc != nil {
+				if app.leftHwnd != 0 {
+					invalidateRectProc.Call(app.leftHwnd, 0, 1)
+				}
+				if app.rightHwnd != 0 {
+					invalidateRectProc.Call(app.rightHwnd, 0, 1)
+				}
+				if app.hwnd != 0 {
+					invalidateRectProc.Call(app.hwnd, 0, 1)
+				}
+			}
+			return 0
 		case wmHistoryExportDone:
 			drainHistoryExportResult(&app)
 			if invalidateRectProc != nil {
@@ -878,7 +962,8 @@ func runNativeGUI(initialTab string) error {
 			postQuitMessage.Call(0)
 			return 0
 		case wmCloseGUI:
-			guiLog("wmClose ignored to keep GUI visible")
+			guiLog("wmClose received")
+			postQuitMessage.Call(0)
 			return 0
 		}
 		ret, _, _ := defWindowProc.Call(hwnd, uintptr(message), wParam, lParam)
@@ -901,7 +986,7 @@ func runNativeGUI(initialTab string) error {
 	}

 	guiLog("stage=create window")
-	app.hwnd, _, _ = createWindowEx.Call(0, uintptr(unsafe.Pointer(className)), uintptr(unsafe.Pointer(title)), wsPopup|wsVisible|wsClipChildren, 200, 120, windowWidth, contentTop+leftPaneHeight+bottomBarHeight, 0, 0, hInstance, 0)
+	app.hwnd, _, _ = createWindowEx.Call(0, uintptr(unsafe.Pointer(className)), uintptr(unsafe.Pointer(title)), wsPopup|wsSizeBox|wsVisible|wsClipChildren, 200, 120, windowWidth, contentTop+leftPaneHeight+bottomBarHeight, 0, 0, hInstance, 0)
 	if app.hwnd == 0 {
 		guiLog("stage=create window failed")
 		return fmt.Errorf("create window failed")
@@ -974,6 +1059,10 @@ func refreshGUI(setWindowText *syscall.LazyProc, app *guiApp, reloadData bool) {
 	if app == nil {
 		return
 	}
+	if app.activeTab == "history" && !reloadData {
+		syncPaneVisibility(app)
+		return
+	}
 	start := time.Now()
 	defer func() {
 		if d := time.Since(start); d > 100*time.Millisecond {
@@ -984,11 +1073,7 @@ func refreshGUI(setWindowText *syscall.LazyProc, app *guiApp, reloadData bool) {
 	instanceCount := app.currentUserCount
 	worldLabel := app.currentWorld
 	state := readRuntimeSnapshot()
-	historyDirty := false
-	historyNeedsRefresh := app.activeTab == "history" && (app.historyReloadPending || !app.historyCacheLoaded)
-	if historyNeedsRefresh {
-		historyDirty = refreshHistoryCache(app, false)
-	}
+	historyDirty := app.activeTab == "history" && app.historyReloadPending
 	if reloadData {
 		if app.activeTab == "translate" {
 			guiLog("refreshGUI activeTab=translate light refresh")
@@ -1161,7 +1246,7 @@ func refreshGUI(setWindowText *syscall.LazyProc, app *guiApp, reloadData bool) {
 	if app.settingsPaneHwnd != 0 {
 		showWindowProc.Call(app.settingsPaneHwnd, swHideControl)
 	}
-	for _, hwnd := range []uintptr{app.btnTopMost, app.btnAutoUnmute, app.btnFontDown, app.btnFontUp} {
+	for _, hwnd := range []uintptr{app.btnTopMost, app.btnAutoUnmute} {
 		if hwnd != 0 {
 			showWindowProc.Call(hwnd, swHideControl)
 		}
@@ -1202,7 +1287,7 @@ func refreshSettingsControls(showWindowProc, setWindowPosProc *syscall.LazyProc,
 			return
 		}
 		app.lastSettingsVisible = true
-		for _, hwnd := range []uintptr{app.btnTopMost, app.btnAutoUnmute, app.btnFontDown, app.btnFontUp} {
+		for _, hwnd := range []uintptr{app.btnTopMost, app.btnAutoUnmute} {
 			if hwnd != 0 {
 				showWindowProc.Call(hwnd, swHideControl)
 			}
@@ -1226,7 +1311,7 @@ func refreshSettingsControls(showWindowProc, setWindowPosProc *syscall.LazyProc,
 	if app.settingsPaneHwnd != 0 {
 		showWindowProc.Call(app.settingsPaneHwnd, swHideControl)
 	}
-	for _, hwnd := range []uintptr{app.btnTopMost, app.btnAutoUnmute, app.btnFontDown, app.btnFontUp, app.settingsExportDirEdit, app.settingsExportCustomEdit, app.settingsExportBrowseBtn, app.settingsExportCustomSaveBtn} {
+	for _, hwnd := range []uintptr{app.btnTopMost, app.btnAutoUnmute, app.settingsExportDirEdit, app.settingsExportCustomEdit, app.settingsExportBrowseBtn, app.settingsExportCustomSaveBtn} {
 		if hwnd != 0 {
 			showWindowProc.Call(hwnd, swHideControl)
 		}
@@ -1394,7 +1479,7 @@ func applyJoinLogFont(app *guiApp, presentCount int) {
 		size = app.fontSize
 	}
 	if size <= 0 {
-		size = 18
+		size = defaultGUIFontSize
 	}
 	if app.joinHFont != 0 && app.joinBoldHFont != 0 && app.joinHeadlineHFont != 0 &&
 		app.joinFontSize == size && app.joinBoldFontSize == size && app.joinHeadlineSize == size+2 {
@@ -1469,7 +1554,7 @@ func applyJoinLogFontSize(app *guiApp, size int) {
 		return
 	}
 	if size <= 0 {
-		size = 18
+		size = defaultGUIFontSize
 	}
 	if app.joinHFont != 0 && app.joinBoldHFont != 0 && app.joinFontSize == size && app.joinBoldFontSize == size {
 		return
@@ -1499,7 +1584,7 @@ func applyJoinLogFontSize(app *guiApp, size int) {
 func fitJoinLogFontSize(baseSize, lineCount, availableHeight int) int {
 	size := baseSize
 	if size <= 0 {
-		size = 18
+		size = defaultGUIFontSize
 	}
 	if lineCount <= 0 {
 		lineCount = 1
@@ -1507,14 +1592,14 @@ func fitJoinLogFontSize(baseSize, lineCount, availableHeight int) int {
 	if availableHeight <= 0 {
 		availableHeight = 300
 	}
-	for size > 8 {
+	for size > minGUIFontSize {
 		if joinPaneContentHeight(size, lineCount) <= availableHeight {
 			break
 		}
 		size -= 2
 	}
-	if size < 8 {
-		size = 8
+	if size < minGUIFontSize {
+		size = minGUIFontSize
 	}
 	return size
 }
@@ -1562,33 +1647,43 @@ func resizeGUIForJoinContent(app *guiApp, contentHeight int) {
 	if contentHeight < leftPaneHeight {
 		contentHeight = leftPaneHeight
 	}
+	if w, h, ok := clientSize(app.hwnd); ok {
+		if h > contentTop+contentHeight+bottomBarHeight {
+			contentHeight = h - contentTop - bottomBarHeight
+		}
+		if w < minWindowWidth {
+			w = minWindowWidth
+		}
+		resizeFlags := hwndNoMove | hwndNoZOrder | hwndNoActivate
+		windowHeight := contentTop + contentHeight + bottomBarHeight
+		setWindowPosProc.Call(app.hwnd, 0, 0, 0, uintptr(w), uintptr(windowHeight), resizeFlags)
+		layoutMainWindow(app)
+		return
+	}
 	resizeFlags := hwndNoMove | hwndNoZOrder | hwndNoActivate
 	windowHeight := contentTop + contentHeight + bottomBarHeight
 	setWindowPosProc.Call(app.hwnd, 0, 0, 0, windowWidth, uintptr(windowHeight), resizeFlags)
-	for _, item := range []struct {
-		hwnd  uintptr
-		width int
-	}{
-		{app.leftHwnd, leftPaneWidth},
-		{app.rightHwnd, rightPaneWidth},
-		{app.settingsPaneHwnd, settingsPaneWidth},
-	} {
-		if item.hwnd != 0 {
-			setWindowPosProc.Call(item.hwnd, 0, 0, 0, uintptr(item.width), uintptr(contentHeight), resizeFlags)
-		}
-	}
+	layoutMainWindow(app)
 }

 func resizeGUIForSettings(app *guiApp) {
 	if app == nil || setWindowPosProc == nil || app.hwnd == 0 {
 		return
 	}
-	resizeFlags := hwndNoMove | hwndNoZOrder | hwndNoActivate
-	windowHeight := contentTop + leftPaneHeight + bottomBarHeight
-	setWindowPosProc.Call(app.hwnd, 0, 0, 0, windowWidth, uintptr(windowHeight), resizeFlags)
-	if app.settingsPaneHwnd != 0 {
-		setWindowPosProc.Call(app.settingsPaneHwnd, 0, 0, uintptr(contentTop), windowWidth, uintptr(leftPaneHeight), resizeFlags)
+	contentHeight := settingsPaneHeight
+	width := windowWidth
+	if w, h, ok := clientSize(app.hwnd); ok {
+		if w > width {
+			width = w
+		}
+		if h > contentTop+contentHeight+bottomBarHeight {
+			contentHeight = h - contentTop - bottomBarHeight
+		}
 	}
+	resizeFlags := hwndNoMove | hwndNoZOrder | hwndNoActivate
+	windowHeight := contentTop + contentHeight + bottomBarHeight
+	setWindowPosProc.Call(app.hwnd, 0, 0, 0, uintptr(width), uintptr(windowHeight), resizeFlags)
+	layoutMainWindow(app)
 }

 type winRect struct {
@@ -1598,6 +1693,110 @@ type winRect struct {
 	Bottom int32
 }

+type winPoint struct {
+	X int32
+	Y int32
+}
+
+type minMaxInfo struct {
+	Reserved     winPoint
+	MaxSize      winPoint
+	MaxPosition  winPoint
+	MinTrackSize winPoint
+	MaxTrackSize winPoint
+}
+
+func applyMinMaxInfo(lParam uintptr) {
+	if lParam == 0 {
+		return
+	}
+	info := (*minMaxInfo)(unsafe.Pointer(lParam))
+	info.MinTrackSize.X = minWindowWidth
+	info.MinTrackSize.Y = minWindowHeight
+}
+
+func clientSize(hwnd uintptr) (int, int, bool) {
+	if hwnd == 0 || getClientRectProc == nil {
+		return 0, 0, false
+	}
+	var rc winRect
+	getClientRectProc.Call(hwnd, uintptr(unsafe.Pointer(&rc)))
+	w := int(rc.Right - rc.Left)
+	h := int(rc.Bottom - rc.Top)
+	if w <= 0 || h <= 0 {
+		return 0, 0, false
+	}
+	return w, h, true
+}
+
+func resizeHitTest(x, y int32, rc winRect) int32 {
+	if rc.Right <= 0 || rc.Bottom <= 0 {
+		return 0
+	}
+	onLeft := x >= 0 && x < resizeGripSize
+	onRight := x <= rc.Right && x > rc.Right-resizeGripSize
+	onTop := y >= 0 && y < resizeGripSize
+	onBottom := y <= rc.Bottom && y > rc.Bottom-resizeGripSize
+	switch {
+	case onTop && onLeft:
+		return htTopLeft
+	case onTop && onRight:
+		return htTopRight
+	case onBottom && onLeft:
+		return htBottomLeft
+	case onBottom && onRight:
+		return htBottomRight
+	case onLeft:
+		return htLeft
+	case onRight:
+		return htRight
+	case onTop:
+		return htTop
+	case onBottom:
+		return htBottom
+	default:
+		return 0
+	}
+}
+
+func layoutMainWindow(app *guiApp) {
+	if app == nil || app.hwnd == 0 || setWindowPosProc == nil {
+		return
+	}
+	clientW, clientH, ok := clientSize(app.hwnd)
+	if !ok {
+		return
+	}
+	contentH := clientH - contentTop - bottomBarHeight
+	if contentH < 1 {
+		contentH = 1
+	}
+	leftW := leftPaneWidth
+	if clientW < leftW+160 {
+		leftW = clientW / 2
+		if leftW < 240 {
+			leftW = 240
+		}
+	}
+	rightW := clientW - leftW
+	if rightW < 1 {
+		rightW = 1
+	}
+	resizeFlags := hwndNoZOrder | hwndNoActivate
+	if app.navBarHwnd != 0 {
+		setWindowPosProc.Call(app.navBarHwnd, 0, 0, uintptr(headerHeight), uintptr(clientW), uintptr(navBarHeight), resizeFlags)
+	}
+	if app.leftHwnd != 0 {
+		setWindowPosProc.Call(app.leftHwnd, 0, 0, uintptr(contentTop), uintptr(leftW), uintptr(contentH), resizeFlags)
+	}
+	if app.rightHwnd != 0 {
+		setWindowPosProc.Call(app.rightHwnd, 0, uintptr(leftW), uintptr(contentTop), uintptr(rightW), uintptr(contentH), resizeFlags)
+	}
+	if app.settingsPaneHwnd != 0 {
+		setWindowPosProc.Call(app.settingsPaneHwnd, 0, 0, uintptr(contentTop), uintptr(clientW), uintptr(contentH), resizeFlags)
+	}
+}
+
 type paintStruct struct {
 	Hdc         uintptr
 	FErase      int32
@@ -1712,6 +1911,10 @@ func paintMainWindow(hwnd uintptr, app *guiApp) uintptr {
 	return 0
 }

+func pointInHeaderDot(x, y, cx, cy int32) bool {
+	return x >= cx-11 && x <= cx+11 && y >= cy-11 && y <= cy+11
+}
+
 func paintFooter(hdc uintptr, rc winRect, app *guiApp) {
 	if app == nil {
 		return
@@ -1814,22 +2017,17 @@ func paintSettingsPane(hwnd uintptr, app *guiApp) uintptr {
 	drawPaneText(hdc, 24, 68, "表示", app.hFont, clrMutedText)
 	drawSettingsWideButton(hdc, settingsTopMostRect(), "Top most", onOffBool(app.topMost), app.hFont, app.topMost)
 	drawSettingsWideButton(hdc, settingsAutoUnmuteRect(), "Leave unmute", onOffBool(app.autoUnmuteOnLeave), app.hFont, app.autoUnmuteOnLeave)
-	drawPaneText(hdc, 24, 190, "文字サイズ", app.hFont, clrMutedText)
+	drawPaneText(hdc, 24, 190, "更新間隔", app.hFont, clrMutedText)
 	drawSettingsRefreshControl(hdc, app)
+	drawPaneText(hdc, 24, 314, "文字サイズ", app.hFont, clrMutedText)
 	drawSettingsFontControl(hdc, app)
-	drawPaneText(hdc, 24, 390, "履歴 Export", app.hFont, clrMutedText)
-	drawPaneText(hdc, 24, 414, "出力先フォルダ", app.hFont, clrMutedText)
-	drawSettingsBox(hdc, settingsHistoryExportDirRect(), 0x0038281a, clrPaneBorder)
-	drawPaneText(hdc, 120, 414, exportDirDisplayText(app.historyExportDir), app.hFont, clrText)
-	drawSettingsWideButton(hdc, settingsHistoryExportBrowseRect(), "参照", "", app.hFont, true)
+	drawPaneText(hdc, 24, 400, "履歴 Export", app.hFont, clrMutedText)
+	drawPaneText(hdc, 24, 430, "出力先フォルダ", app.hFont, clrMutedText)
 	drawSettingsWideButton(hdc, settingsHistoryExportTimeRect(), "Time", onOffBool(app.historyExportIncludeTime), app.hFont, app.historyExportIncludeTime)
 	drawSettingsWideButton(hdc, settingsHistoryExportWorldRect(), "World", onOffBool(app.historyExportIncludeWorld), app.hFont, app.historyExportIncludeWorld)
 	drawSettingsWideButton(hdc, settingsHistoryExportJoinLeaveRect(), "Join/Leave", onOffBool(app.historyExportIncludeJoinLeave), app.hFont, app.historyExportIncludeJoinLeave)
 	drawSettingsWideButton(hdc, settingsHistoryExportCustomToggleRect(), "Custom", onOffBool(app.historyExportCustomEnabled), app.hFont, app.historyExportCustomEnabled)
-	drawPaneText(hdc, 24, 522, "Custom 条件", app.hFont, clrMutedText)
-	drawSettingsBox(hdc, settingsHistoryExportCustomRect(), 0x0038281a, clrPaneBorder)
-	drawPaneText(hdc, 120, 522, previewLine(app.historyExportCustom, 60), app.hFont, clrText)
-	drawSettingsWideButton(hdc, settingsHistoryExportCustomSaveRect(), "保存", "", app.hFont, true)
+	drawPaneText(hdc, 24, 618, "Custom 条件", app.hFont, clrMutedText)
 	return 0
 }

@@ -1870,35 +2068,35 @@ func settingsFontUpRect() winRect {
 }

 func settingsHistoryExportDirRect() winRect {
-	return winRect{Left: 116, Top: 410, Right: 636, Bottom: 434}
+	return winRect{Left: 24, Top: 458, Right: 636, Bottom: 490}
 }

 func settingsHistoryExportBrowseRect() winRect {
-	return winRect{Left: 644, Top: 410, Right: 736, Bottom: 434}
+	return winRect{Left: 644, Top: 458, Right: 736, Bottom: 490}
 }

 func settingsHistoryExportTimeRect() winRect {
-	return winRect{Left: 24, Top: 442, Right: 360, Bottom: 476}
+	return winRect{Left: 24, Top: 510, Right: 360, Bottom: 546}
 }

 func settingsHistoryExportWorldRect() winRect {
-	return winRect{Left: 376, Top: 442, Right: 736, Bottom: 476}
+	return winRect{Left: 376, Top: 510, Right: 736, Bottom: 546}
 }

 func settingsHistoryExportJoinLeaveRect() winRect {
-	return winRect{Left: 24, Top: 480, Right: 360, Bottom: 514}
+	return winRect{Left: 24, Top: 558, Right: 360, Bottom: 594}
 }

 func settingsHistoryExportCustomToggleRect() winRect {
-	return winRect{Left: 376, Top: 480, Right: 736, Bottom: 514}
+	return winRect{Left: 376, Top: 558, Right: 736, Bottom: 594}
 }

 func settingsHistoryExportCustomRect() winRect {
-	return winRect{Left: 116, Top: 520, Right: 636, Bottom: 544}
+	return winRect{Left: 24, Top: 646, Right: 636, Bottom: 678}
 }

 func settingsHistoryExportCustomSaveRect() winRect {
-	return winRect{Left: 644, Top: 520, Right: 736, Bottom: 544}
+	return winRect{Left: 644, Top: 646, Right: 736, Bottom: 678}
 }

 func handleSettingsPaneClick(app *guiApp, x, y int32, getWindowText, setWindowText *syscall.LazyProc) bool {
@@ -1929,15 +2127,21 @@ func handleSettingsPaneClick(app *guiApp, x, y int32, getWindowText, setWindowTe
 			applyRefreshTimer(app.hwnd, app)
 		}
 	case pointInRect(x, y, settingsFontDownRect()):
-		if app.fontSize > 10 {
+		if app.fontSize > minGUIFontSize {
 			app.fontSize -= 2
+			if app.fontSize < minGUIFontSize {
+				app.fontSize = minGUIFontSize
+			}
 			app.hFont = createAppFont(app.fontSize)
 			applyFont(app)
 			saveGUISettings(app)
 		}
 	case pointInRect(x, y, settingsFontUpRect()):
-		if app.fontSize < 30 {
+		if app.fontSize < maxGUIFontSize {
 			app.fontSize += 2
+			if app.fontSize > maxGUIFontSize {
+				app.fontSize = maxGUIFontSize
+			}
 			app.hFont = createAppFont(app.fontSize)
 			applyFont(app)
 			saveGUISettings(app)
@@ -1982,9 +2186,9 @@ func drawSettingsRefreshControl(hdc uintptr, app *guiApp) {
 	drawSettingsBox(hdc, settingsRefreshValueRect(), uint32(0x0038281a), border)
 	drawSettingsBox(hdc, settingsRefreshUpRect(), fill, border)
 	drawSettingsWideButton(hdc, settingsRefreshUnitRect(), "\u5358\u4f4d", refreshIntervalUnitLabel(app.refreshIntervalUnit), font, true)
-	drawCenteredPaneText(hdc, settingsRefreshDownRect(), "A-", font, clrText)
+	drawCenteredPaneText(hdc, settingsRefreshDownRect(), "-", font, clrText)
 	drawCenteredPaneText(hdc, settingsRefreshValueRect(), refreshIntervalValueLabel(app.refreshIntervalValue, app.refreshIntervalUnit), font, clrMutedText)
-	drawCenteredPaneText(hdc, settingsRefreshUpRect(), "A+", font, clrText)
+	drawCenteredPaneText(hdc, settingsRefreshUpRect(), "+", font, clrText)
 }

 func refreshIntervalValueLabel(value int, unit string) string {
@@ -2609,7 +2813,7 @@ func drawSettingsFontControl(hdc uintptr, app *guiApp) {
 	drawSettingsBox(hdc, settingsFontValueRect(), uint32(0x0038281a), border)
 	drawSettingsBox(hdc, settingsFontUpRect(), fill, border)
 	drawCenteredPaneText(hdc, settingsFontDownRect(), "A-", font, clrText)
-	drawCenteredPaneText(hdc, settingsFontValueRect(), strconv.Itoa(app.fontSize), font, clrMutedText)
+	drawCenteredPaneText(hdc, settingsFontValueRect(), strconv.Itoa(app.fontSize)+" pt", font, clrMutedText)
 	drawCenteredPaneText(hdc, settingsFontUpRect(), "A+", font, clrText)
 }

@@ -2892,7 +3096,7 @@ func eventRows(users []userState) []guiEventRow {
 }

 func joinLeaveRowsForCurrentWorld(app *guiApp) []guiEventRow {
-	events := historyEventsFromSnapshot()
+	events := historyEventsWithFallback()
 	if len(events) == 0 {
 		users, _ := currentUsersFromJoinLeave()
 		return eventRows(users)
@@ -3055,6 +3259,7 @@ type guiWorldVisitRecord struct {
 type guiWorldHistoryFile struct {
 	UpdatedAt string                `json:"updated_at"`
 	Visits    []guiWorldVisitRecord `json:"visits"`
+	Current   *guiWorldVisitRecord  `json:"current"`
 }

 func readWorldHistory() []guiWorldVisitRecord {
@@ -3080,6 +3285,9 @@ func readWorldHistory() []guiWorldVisitRecord {
 			return nil
 		}
 		visits = snap.Visits
+		if snap.Current != nil && !snap.Current.StartedAt.IsZero() {
+			visits = append(visits, *snap.Current)
+		}
 	}
 	out := dedupeWorldHistory(visits)
 	if info, err := os.Stat(p); err == nil {
@@ -3242,7 +3450,7 @@ func humanDurationLabel(started, ended time.Time, current bool) string {
 	}
 	d := ended.Sub(started)
 	if current {
-		return formatDurationShort(d) + " active"
+		return formatDurationShort(d)
 	}
 	return formatDurationShort(d)
 }
@@ -3267,7 +3475,7 @@ func formatDurationShort(d time.Duration) string {
 func joinLogFontSize(baseSize, presentCount int) int {
 	size := baseSize
 	if size <= 0 {
-		size = 18
+		size = defaultGUIFontSize
 	}
 	if presentCount <= 32 {
 		return size
@@ -3280,8 +3488,8 @@ func joinLogFontSize(baseSize, presentCount int) int {
 	case presentCount >= 33:
 		size -= 2
 	}
-	if size < 8 {
-		size = 8
+	if size < minGUIFontSize {
+		size = minGUIFontSize
 	}
 	return size
 }
@@ -3736,7 +3944,7 @@ func loadGUISettings() config.GUIConfig {
 	if err != nil || cfg == nil {
 		return config.GUIConfig{
 			TopMost:                       false,
-			FontSize:                      18,
+			FontSize:                      defaultGUIFontSize,
 			RefreshIntervalValue:          2,
 			RefreshIntervalUnit:           "sec",
 			HistoryExportIncludeTime:      true,
@@ -3745,7 +3953,7 @@ func loadGUISettings() config.GUIConfig {
 		}
 	}
 	if cfg.GUI.FontSize <= 0 {
-		cfg.GUI.FontSize = 18
+		cfg.GUI.FontSize = defaultGUIFontSize
 	}
 	cfg.GUI.RefreshIntervalValue, cfg.GUI.RefreshIntervalUnit = normalizeRefreshIntervalSettings(cfg.GUI.RefreshIntervalValue, cfg.GUI.RefreshIntervalUnit)
 	cfg.GUI.HistoryRegex = strings.TrimSpace(cfg.GUI.HistoryRegex)
@@ -4096,7 +4304,7 @@ func formatRightPane(tab string, state map[string]any, worldLabel string, curren
 		b.WriteString("\r\nFont size: ")
 		fontSize, _ := state["font_size"].(int)
 		if fontSize == 0 {
-			fontSize = 18
+			fontSize = defaultGUIFontSize
 		}
 		b.WriteString(strconv.Itoa(fontSize))
 		b.WriteString("\r\nLeave unmute: ")
@@ -4134,7 +4342,7 @@ func formatSettingsPane(state map[string]any) string {
 	b.WriteString("\r\nFont size: ")
 	fontSize, _ := state["font_size"].(int)
 	if fontSize == 0 {
-		fontSize = 18
+		fontSize = defaultGUIFontSize
 	}
 	b.WriteString(strconv.Itoa(fontSize))
 	b.WriteString("\r\nLeave unmute: ")
--- a/internal/app/world_history.go
+++ b/internal/app/world_history.go
@@ -25,6 +25,7 @@ type WorldVisit struct {
 type worldHistorySnapshot struct {
 	UpdatedAt time.Time    `json:"updated_at"`
 	Visits    []WorldVisit `json:"visits"`
+	Current   *WorldVisit  `json:"current,omitempty"`
 }

 type WorldHistoryTracker struct {
@@ -61,6 +62,10 @@ func (t *WorldHistoryTracker) load() error {
 		return err
 	}
 	t.visits = mergeWorldVisits(snap.Visits)
+	if snap.Current != nil && !snap.Current.StartedAt.IsZero() {
+		current := *snap.Current
+		t.current = &current
+	}
 	return nil
 }

@@ -188,6 +193,7 @@ func (t *WorldHistoryTracker) persistLocked() error {
 	return enc.Encode(worldHistorySnapshot{
 		UpdatedAt: time.Now(),
 		Visits:    mergeWorldVisits(t.visits),
+		Current:   t.current,
 	})
 }

--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -53,7 +53,7 @@ func Load(path string) (*Config, error) {
 	cfg := &Config{
 		OSC: OSCConfig{Host: "127.0.0.1", Port: 9001},
 		GUI: GUIConfig{
-			FontSize:                      18,
+			FontSize:                      14,
 			RefreshIntervalValue:          2,
 			RefreshIntervalUnit:           "sec",
 			HistoryExportIncludeTime:      true,
Author	SHA1	Message	Date
messypy	70bafabee9	Persist current world history All checks were successful build-windows-exe / build (push) Successful in 1m50s Details	2026-07-28 00:51:15 +09:00
messypy	8e704980c1	Fix history current visit labels All checks were successful build-windows-exe / build (push) Successful in 1m5s Details	2026-07-28 00:47:37 +09:00
messypy	1b3d978137	Allow resizing native GUI window All checks were successful build-windows-exe / build (push) Successful in 1m24s Details	2026-07-28 00:44:28 +09:00
messypy	51c00f2a75	Fallback history export to VRChat logs All checks were successful build-windows-exe / build (push) Successful in 1m40s Details	2026-07-28 00:37:56 +09:00
messypy	6d318af329	Give settings export controls more space All checks were successful build-windows-exe / build (push) Successful in 1m46s Details	2026-07-28 00:31:42 +09:00
messypy	a017170c71	Align settings controls All checks were successful build-windows-exe / build (push) Successful in 2m9s Details	2026-07-28 00:20:57 +09:00
messypy	d38d2edee3	Remove duplicate font size buttons All checks were successful build-windows-exe / build (push) Successful in 2m5s Details	2026-07-28 00:14:04 +09:00
messypy	01d5799914	Fix settings panel control overlap All checks were successful build-windows-exe / build (push) Successful in 2m28s Details	2026-07-28 00:05:41 +09:00
messypy	f9968895ac	Allow smaller GUI font sizes All checks were successful build-windows-exe / build (push) Successful in 1m31s Details	2026-07-27 23:57:57 +09:00
messypy	452c7c59b6	Include full day details in history export All checks were successful build-windows-exe / build (push) Successful in 1m4s Details	2026-07-27 23:53:00 +09:00
messypy	b059c91388	Enable custom window control buttons All checks were successful build-windows-exe / build (push) Successful in 1m4s Details	2026-07-27 23:45:09 +09:00
messypy	289337f016	Keep Win32 GUI on one OS thread All checks were successful build-windows-exe / build (push) Successful in 1m35s Details	2026-07-27 23:36:06 +09:00
messypy	dadc65065c	Load GUI history asynchronously All checks were successful build-windows-exe / build (push) Successful in 1m12s Details	2026-07-27 23:32:17 +09:00
messypy	4df1a5d71a	Limit release workflow tests to internal packages All checks were successful build-windows-exe / build (push) Successful in 1m32s Details	2026-07-27 23:16:14 +09:00