Parse DEC margin bell mode

Author: SqlRush

docs/cc-100-roadmap.md

@@ -170,6 +170,8 @@ M7 补充：terminal CSI parser 现在把 DEC `?8h/l` auto-repeat mode 解析成
 
 M7 补充：terminal CSI parser 现在把 DEC `?12h/l` cursor blink mode 解析成结构化 `cursorBlink` mode action，补齐 cursor visibility/style 相邻的终端状态序列。
 
+M7 补充：terminal CSI parser 现在把 DEC `?44h/l` margin bell mode 解析成结构化 `marginBell` mode action，补齐 wrap/margin 相邻的响铃状态序列。
+
 M7 补充：terminal CSI parser 现在把 xterm/DEC `?45h/l` reverse-wraparound mode 解析成结构化 `reverseWrap` mode action，补齐 auto-wrap 相邻的 wrap 状态序列。
 
 M7 补充：terminal CSI parser 现在把 DEC `?66h/l` application keypad mode 解析成结构化 `applicationKeypad` mode action，补齐 application cursor mode 相邻的输入状态序列。

docs/claude-code-go-rewrite-plan.md

@@ -268,6 +268,7 @@ test/parity/                 # golden tests against TS/official behavior
 - 本轮补充：terminal CSI parser 把 DEC `?6h/l` origin mode 和 `?7h/l` auto-wrap mode 解析成结构化 mode action，继续减少终端状态序列的 unknown fallback。
 - 本轮补充：terminal CSI parser 把 DEC `?8h/l` auto-repeat mode 解析成结构化 `autoRepeat` mode action，补齐键盘重复状态序列。
 - 本轮补充：terminal CSI parser 把 DEC `?12h/l` cursor blink mode 解析成结构化 `cursorBlink` mode action，补齐 cursor visibility/style 相邻的终端状态序列。
+- 本轮补充：terminal CSI parser 把 DEC `?44h/l` margin bell mode 解析成结构化 `marginBell` mode action，补齐 wrap/margin 相邻的响铃状态序列。
 - 本轮补充：terminal CSI parser 把 xterm/DEC `?45h/l` reverse-wraparound mode 解析成结构化 `reverseWrap` mode action，补齐 auto-wrap 相邻的 wrap 状态序列。
 - 本轮补充：terminal CSI parser 把 DEC `?66h/l` application keypad mode 解析成结构化 `applicationKeypad` mode action，补齐 application cursor mode 相邻的输入状态序列。
 - 本轮补充：terminal CSI parser 把 DEC `?67h/l` backarrow key mode 解析成结构化 `backarrowKey` mode action，补齐键盘输入状态序列。

docs/first-second-parity-audit.md

@@ -219,6 +219,7 @@ M7 progress now includes:
 - `internal/tui`: terminal CSI parser now recognizes DEC origin mode (`?6h/l`) and auto-wrap mode (`?7h/l`) as structured mode actions.
 - `internal/tui`: terminal CSI parser now recognizes DEC auto-repeat mode (`?8h/l`) as a structured `autoRepeat` mode action.
 - `internal/tui`: terminal CSI parser now recognizes DEC cursor blink mode (`?12h/l`) as a structured `cursorBlink` mode action.
+- `internal/tui`: terminal CSI parser now recognizes DEC margin bell mode (`?44h/l`) as a structured `marginBell` mode action.
 - `internal/tui`: terminal CSI parser now recognizes xterm/DEC reverse-wraparound mode (`?45h/l`) as a structured `reverseWrap` mode action.
 - `internal/tui`: terminal CSI parser now recognizes DEC application keypad mode (`?66h/l`) as a structured `applicationKeypad` mode action.
 - `internal/tui`: terminal CSI parser now recognizes DEC backarrow key mode (`?67h/l`) as a structured `backarrowKey` mode action.

internal/tui/terminal_csi.go

@@ -76,6 +76,7 @@ const (
 	DECModeCursorBlink        = 12
 	DECModeCursorVisible      = 25
 	DECModeAllowColumnSwitch  = 40
+	DECModeMarginBell         = 44
 	DECModeReverseWrap        = 45
 	DECModeAltScreen          = 47
 	DECModeApplicationKeypad  = 66
@@ -242,6 +243,7 @@ const (
 	CSIModeActionOrigin            CSIModeActionType = "originMode"
 	CSIModeActionAutoWrap          CSIModeActionType = "autoWrap"
 	CSIModeActionAutoRepeat        CSIModeActionType = "autoRepeat"
+	CSIModeActionMarginBell        CSIModeActionType = "marginBell"
 	CSIModeActionReverseWrap       CSIModeActionType = "reverseWrap"
 	CSIModeActionCursorBlink       CSIModeActionType = "cursorBlink"
 	CSIModeActionApplicationKeypad CSIModeActionType = "applicationKeypad"
@@ -593,6 +595,8 @@ func csiPrivateModeAction(mode int, enabled bool) (CSIAction, bool) {
 		return CSIAction{Type: CSIActionMode, Mode: CSIModeAction{Type: CSIModeActionAutoWrap, Enabled: enabled}}, true
 	case DECModeAutoRepeat:
 		return CSIAction{Type: CSIActionMode, Mode: CSIModeAction{Type: CSIModeActionAutoRepeat, Enabled: enabled}}, true
+	case DECModeMarginBell:
+		return CSIAction{Type: CSIActionMode, Mode: CSIModeAction{Type: CSIModeActionMarginBell, Enabled: enabled}}, true
 	case DECModeReverseWrap:
 		return CSIAction{Type: CSIActionMode, Mode: CSIModeAction{Type: CSIModeActionReverseWrap, Enabled: enabled}}, true
 	case DECModeMouseX10:

internal/tui/tui_test.go

@@ -3662,6 +3662,8 @@ func TestParseCSISequenceActions(t *testing.T) {
 		{seq: "\x1b[?8l", want: CSIModeAction{Type: CSIModeActionAutoRepeat, Enabled: false}},
 		{seq: "\x1b[?12h", want: CSIModeAction{Type: CSIModeActionCursorBlink, Enabled: true}},
 		{seq: "\x1b[?12l", want: CSIModeAction{Type: CSIModeActionCursorBlink, Enabled: false}},
+		{seq: "\x1b[?44h", want: CSIModeAction{Type: CSIModeActionMarginBell, Enabled: true}},
+		{seq: "\x1b[?44l", want: CSIModeAction{Type: CSIModeActionMarginBell, Enabled: false}},
 		{seq: "\x1b[?45h", want: CSIModeAction{Type: CSIModeActionReverseWrap, Enabled: true}},
 		{seq: "\x1b[?45l", want: CSIModeAction{Type: CSIModeActionReverseWrap, Enabled: false}},
 		{seq: "\x1b[?66h", want: CSIModeAction{Type: CSIModeActionApplicationKeypad, Enabled: true}},