i18n: add Timeline panel translations for all 12 locales

Add timeline.title and timeline.waveform keys to every settings.json
locale file. Replace all hardcoded "Timeline" and "Show Audio Waveform
on Trim Track" strings in SettingsPanel with t() calls.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/video-editor/SettingsPanel.tsx

@@ -608,7 +608,7 @@ export function SettingsPanel({
 		{ id: "background", label: t("background.title"), icon: Palette },
 		{ id: "effects", label: t("effects.title"), icon: SlidersHorizontal },
 		{ id: "layout", label: t("layout.title"), icon: LayoutPanelTop, disabled: !hasWebcam },
-		{ id: "timeline", label: "Timeline", icon: Brackets },
+		{ id: "timeline", label: t("timeline.title"), icon: Brackets },
 		...(hasCursorPanel
 			? [
 					{
@@ -631,7 +631,7 @@ export function SettingsPanel({
 				? t("speed.playbackSpeed")
 				: t("trim.deleteRegion")
 		: activePanelMode === "timeline"
-			? "Timeline"
+			? t("timeline.title")
 			: ([...panelModes, exportPanelMode].find((mode) => mode.id === activePanelMode)?.label ??
 				t("background.title"));
 
@@ -1709,13 +1709,13 @@ export function SettingsPanel({
 									<AccordionTrigger className="py-2.5 hover:no-underline">
 										<div className="flex items-center gap-2">
 											<Brackets className="w-4 h-4 text-[#34B27B]" />
-											<span className="text-xs font-medium">Timeline</span>
+											<span className="text-xs font-medium">{t("timeline.title")}</span>
 										</div>
 									</AccordionTrigger>
 									<AccordionContent className="pb-3">
 										<div className="flex items-center justify-between p-2 rounded-lg editor-control-surface">
 											<div className="text-[10px] font-medium text-slate-300">
-												Show Audio Waveform on Trim Track
+												{t("timeline.waveform")}
 											</div>
 											<Switch
 												checked={showTrimWaveform}

src/i18n/locales/ar/settings.json

@@ -203,5 +203,9 @@
 	},
 	"language": {
 		"title": "اللغة"
+	},
+	"timeline": {
+		"title": "المخطط الزمني",
+		"waveform": "عرض الموجة الصوتية على مسار القطع"
 	}
 }

src/i18n/locales/en/settings.json

@@ -203,5 +203,9 @@
 	},
 	"language": {
 		"title": "Language"
+	},
+	"timeline": {
+		"title": "Timeline",
+		"waveform": "Show Audio Waveform on Trim Track"
 	}
 }

src/i18n/locales/es/settings.json

@@ -203,5 +203,9 @@
 	},
 	"language": {
 		"title": "Idioma"
+	},
+	"timeline": {
+		"title": "Línea de tiempo",
+		"waveform": "Mostrar forma de onda en pista de recorte"
 	}
 }

src/i18n/locales/fr/settings.json

@@ -204,5 +204,9 @@
 	},
 	"language": {
 		"title": "Langue"
+	},
+	"timeline": {
+		"title": "Montage",
+		"waveform": "Afficher la forme d'onde sur la piste de découpe"
 	}
 }

src/i18n/locales/it/settings.json

@@ -202,5 +202,9 @@
 	},
 	"language": {
 		"title": "Lingua"
+	},
+	"timeline": {
+		"title": "Timeline",
+		"waveform": "Mostra la forma d'onda sulla traccia di ritaglio"
 	}
 }

src/i18n/locales/ja-JP/settings.json

@@ -203,5 +203,9 @@
 	},
 	"language": {
 		"title": "言語"
+	},
+	"timeline": {
+		"title": "タイムライン",
+		"waveform": "トリムトラックに音声波形を表示"
 	}
 }

src/i18n/locales/ko-KR/settings.json

@@ -203,5 +203,9 @@
 	},
 	"language": {
 		"title": "언어"
+	},
+	"timeline": {
+		"title": "타임라인",
+		"waveform": "트림 트랙에 오디오 파형 표시"
 	}
 }

src/i18n/locales/ru/settings.json

@@ -203,5 +203,9 @@
 	},
 	"language": {
 		"title": "Язык"
+	},
+	"timeline": {
+		"title": "Таймлайн",
+		"waveform": "Показать волну на дорожке обрезки"
 	}
 }

src/i18n/locales/tr/settings.json

@@ -203,5 +203,9 @@
 	},
 	"language": {
 		"title": "Dil"
+	},
+	"timeline": {
+		"title": "Zaman Tüneli",
+		"waveform": "Kırpma Parçasında Ses Dalgasını Göster"
 	}
 }

src/i18n/locales/vi/settings.json

@@ -203,5 +203,9 @@
 	},
 	"language": {
 		"title": "Ngôn ngữ"
+	},
+	"timeline": {
+		"title": "Dòng thời gian",
+		"waveform": "Hiển thị dạng sóng âm thanh trên rãnh cắt"
 	}
 }

src/i18n/locales/zh-CN/settings.json

@@ -203,5 +203,9 @@
 	},
 	"language": {
 		"title": "语言"
+	},
+	"timeline": {
+		"title": "时间轴",
+		"waveform": "在剪辑轨道上显示音频波形"
 	}
 }

src/i18n/locales/zh-TW/settings.json

@@ -204,5 +204,9 @@
 	},
 	"language": {
 		"title": "語言"
+	},
+	"timeline": {
+		"title": "時間軸",
+		"waveform": "在修剪軌道上顯示音訊波形"
 	}
 }