multicam: wizard + AFV + node-graph preview + performance

- wizard: angle multi-select, sync modes, auto-align, create sequence;
  keeps the host sequence current (host clip = the multicam clip)
- build_multicam_sequence: per-angle clip -> SOURCES_INPUT[element],
  array slot growth, audio angle tracks for AFV
- AFV: host linked audio clip follows the switched source (one undo),
  muted host audio track disables it
- node-graph preview: inline producer renders through the traverser
  (viewer/project-matched graph frames); sequence viewer uses the graph
- multicam node value(): element-tagged row keys (sources_in[i]),
  reads the current source; build_row keys array inputs by element
- angle grid: viewer=0 (single-track montage, not whole-graph)
- project explorer: rename (dialog) + delete (undoable) real items
- performance: decoded-frame LRU, per-process NVDEC quota (1 session,
  evict before open), GPU composite fail-once fallback, snapshot
  upload debounced on the engine tick, worker vram budget headroom
- timeline clip: multicam overlay via ClipDecorator
- wizard menu item moved to Sequence menu

assets/i18n/de.yaml

@@ -145,6 +145,20 @@
 "panel.timeline": "Zeitleiste"
 "panel.effect_library": "Effektbibliothek"
 "panel.multicam": "Multikamera"
+"panel.multicam": "Multikamera"
+"menu.sequence.multicam_wizard": "Multikamera-Assistent"
+"multicam.wizard.title": "Multikamera-Assistent"
+"multicam.wizard.default_name": "Multikamera"
+"multicam.wizard.name": "Sequenzname"
+"multicam.wizard.sync": "Synchronisierung"
+"multicam.sync.audio": "Audiowellenform"
+"multicam.sync.timecode": "Quellzeitcode"
+"multicam.sync.none": "Keine (keine Ausrichtung)"
+"multicam.wizard.angles_label": "Kameras (mindestens zwei auswählen):"
+"multicam.wizard.no_footage": "Kein Material im Projekt für eine Multikamera."
+"multicam.wizard.need_two": "Bitte mindestens zwei Kameras auswählen."
+"multicam.wizard.create": "Erstellen"
+"multicam.no_multicam": "Kein Multikamera-Clip erkannt"
 "multicam.no_multicam": "Kein Multikamera-Clip erkannt"
 "multicam.switch_1": "Zu Kamera 1 wechseln"
 "multicam.switch_2": "Zu Kamera 2 wechseln"

assets/i18n/en-US.yaml

@@ -145,6 +145,18 @@
 "panel.timeline": "Timeline"
 "panel.effect_library": "Effect Library"
 "panel.multicam": "Multi-Cam"
+"menu.sequence.multicam_wizard": "Multi-Cam Wizard"
+"multicam.wizard.title": "Multi-Cam Wizard"
+"multicam.wizard.default_name": "Multi-Cam"
+"multicam.wizard.name": "Sequence Name"
+"multicam.wizard.sync": "Sync Method"
+"multicam.sync.audio": "Audio Waveform"
+"multicam.sync.timecode": "Source Timecode"
+"multicam.sync.none": "None (No Alignment)"
+"multicam.wizard.angles_label": "Angles (select at least two):"
+"multicam.wizard.no_footage": "No footage in the project to create a multicam from."
+"multicam.wizard.need_two": "Select at least two angles."
+"multicam.wizard.create": "Create"
 "multicam.no_multicam": "No multi-camera clip detected"
 "multicam.switch_1": "Switch to Camera 1"
 "multicam.switch_2": "Switch to Camera 2"

assets/i18n/es.yaml

@@ -145,6 +145,20 @@
 "panel.timeline": "Línea de tiempo"
 "panel.effect_library": "Biblioteca de efectos"
 "panel.multicam": "Multicámara"
+"panel.multicam": "Multicámara"
+"menu.sequence.multicam_wizard": "Asistente multicámara"
+"multicam.wizard.title": "Asistente multicámara"
+"multicam.wizard.default_name": "Multicámara"
+"multicam.wizard.name": "Nombre de la secuencia"
+"multicam.wizard.sync": "Método de sincronización"
+"multicam.sync.audio": "Forma de onda de audio"
+"multicam.sync.timecode": "Código de tiempo de origen"
+"multicam.sync.none": "Ninguna (sin alineación)"
+"multicam.wizard.angles_label": "Cámaras (selecciona al menos dos):"
+"multicam.wizard.no_footage": "No hay material en el proyecto para crear una multicámara."
+"multicam.wizard.need_two": "Selecciona al menos dos cámaras."
+"multicam.wizard.create": "Crear"
+"multicam.no_multicam": "No se ha detectado ningún clip multicámara"
 "multicam.no_multicam": "No se ha detectado ningún clip multicámara"
 "multicam.switch_1": "Cambiar a cámara 1"
 "multicam.switch_2": "Cambiar a cámara 2"

assets/i18n/fr.yaml

@@ -145,6 +145,20 @@
 "panel.timeline": "Montage"
 "panel.effect_library": "Bibliothèque d'effets"
 "panel.multicam": "Multicam"
+"panel.multicam": "Multicam"
+"menu.sequence.multicam_wizard": "Assistant multicaméra"
+"multicam.wizard.title": "Assistant multicaméra"
+"multicam.wizard.default_name": "Multicaméra"
+"multicam.wizard.name": "Nom de la séquence"
+"multicam.wizard.sync": "Méthode de synchronisation"
+"multicam.sync.audio": "Forme d’onde audio"
+"multicam.sync.timecode": "Code temporel source"
+"multicam.sync.none": "Aucune (pas d’alignement)"
+"multicam.wizard.angles_label": "Caméras (sélectionnez au moins deux) :"
+"multicam.wizard.no_footage": "Aucun média dans le projet pour créer une multicaméra."
+"multicam.wizard.need_two": "Sélectionnez au moins deux caméras."
+"multicam.wizard.create": "Créer"
+"multicam.no_multicam": "Aucun clip multicaméra détecté"
 "multicam.no_multicam": "Aucun clip multicaméra détecté"
 "multicam.switch_1": "Passer à la caméra 1"
 "multicam.switch_2": "Passer à la caméra 2"

assets/i18n/ja.yaml

@@ -145,6 +145,20 @@
 "panel.timeline": "タイムライン"
 "panel.effect_library": "エフェクトライブラリ"
 "panel.multicam": "マルチカム"
+"panel.multicam": "マルチカム"
+"menu.sequence.multicam_wizard": "マルチカムウィザード"
+"multicam.wizard.title": "マルチカムウィザード"
+"multicam.wizard.default_name": "マルチカム"
+"multicam.wizard.name": "シーケンス名"
+"multicam.wizard.sync": "同期方法"
+"multicam.sync.audio": "オーディオ波形"
+"multicam.sync.timecode": "ソースタイムコード"
+"multicam.sync.none": "なし（整列しない）"
+"multicam.wizard.angles_label": "カメラ（2つ以上選択）："
+"multicam.wizard.no_footage": "プロジェクトにマルチカムを作成できる素材がありません。"
+"multicam.wizard.need_two": "少なくとも2つのカメラを選択してください。"
+"multicam.wizard.create": "作成"
+"multicam.no_multicam": "マルチカメラクリップが検出されませんでした"
 "multicam.no_multicam": "マルチカメラクリップが検出されませんでした"
 "multicam.switch_1": "カメラ1に切り替え"
 "multicam.switch_2": "カメラ2に切り替え"

assets/i18n/pt.yaml

@@ -145,6 +145,20 @@
 "panel.timeline": "Linha do tempo"
 "panel.effect_library": "Biblioteca de efeitos"
 "panel.multicam": "Multicâmera"
+"panel.multicam": "Multicâmera"
+"menu.sequence.multicam_wizard": "Assistente multicâmera"
+"multicam.wizard.title": "Assistente multicâmera"
+"multicam.wizard.default_name": "Multicâmera"
+"multicam.wizard.name": "Nome da sequência"
+"multicam.wizard.sync": "Método de sincronização"
+"multicam.sync.audio": "Forma de onda de áudio"
+"multicam.sync.timecode": "Código de tempo de origem"
+"multicam.sync.none": "Nenhuma (sem alinhamento)"
+"multicam.wizard.angles_label": "Câmeras (selecione pelo menos duas):"
+"multicam.wizard.no_footage": "Nenhum material no projeto para criar uma multicâmera."
+"multicam.wizard.need_two": "Selecione pelo menos duas câmeras."
+"multicam.wizard.create": "Criar"
+"multicam.no_multicam": "Nenhum clipe multicâmera detectado"
 "multicam.no_multicam": "Nenhum clipe multicâmera detectado"
 "multicam.switch_1": "Alternar para a câmera 1"
 "multicam.switch_2": "Alternar para a câmera 2"

assets/i18n/ru.yaml

@@ -145,6 +145,20 @@
 "panel.timeline": "Таймлайн"
 "panel.effect_library": "Библиотека эффектов"
 "panel.multicam": "Мультикамера"
+"panel.multicam": "Мультикамера"
+"menu.sequence.multicam_wizard": "Мастер мультикамеры"
+"multicam.wizard.title": "Мастер мультикамеры"
+"multicam.wizard.default_name": "Мультикамера"
+"multicam.wizard.name": "Имя последовательности"
+"multicam.wizard.sync": "Метод синхронизации"
+"multicam.sync.audio": "Аудиосигнал (форма волны)"
+"multicam.sync.timecode": "Исходный таймкод"
+"multicam.sync.none": "Нет (без выравнивания)"
+"multicam.wizard.angles_label": "Камеры (выберите не менее двух):"
+"multicam.wizard.no_footage": "В проекте нет материала для создания мультикамеры."
+"multicam.wizard.need_two": "Выберите не менее двух камер."
+"multicam.wizard.create": "Создать"
+"multicam.no_multicam": "Не обнаружен клип мультикамеры"
 "multicam.no_multicam": "Не обнаружен клип мультикамеры"
 "multicam.switch_1": "Переключиться на камеру 1"
 "multicam.switch_2": "Переключиться на камеру 2"

assets/i18n/zh-CN.yaml

@@ -145,6 +145,18 @@
 "panel.timeline": "时间线"
 "panel.effect_library": "效果库"
 "panel.multicam": "多机位"
+"menu.sequence.multicam_wizard": "多机位向导"
+"multicam.wizard.title": "多机位向导"
+"multicam.wizard.default_name": "多机位"
+"multicam.wizard.name": "序列名称"
+"multicam.wizard.sync": "同步方式"
+"multicam.sync.audio": "音频波形"
+"multicam.sync.timecode": "源时间码"
+"multicam.sync.none": "无（不自动对齐）"
+"multicam.wizard.angles_label": "机位（至少选择两个）："
+"multicam.wizard.no_footage": "项目中没有可用于创建多机位的素材。"
+"multicam.wizard.need_two": "请至少选择两个机位。"
+"multicam.wizard.create": "创建"
 "multicam.no_multicam": "未检测到多机位片段"
 "multicam.switch_1": "切换到机位 1"
 "multicam.switch_2": "切换到机位 2"