- ActionEditor.vue — reusable list editor for Action[]: add/remove/reorder,
per-type parameter forms (jump to time/frame/marker, set button
state/disabled, script source). Marker and button dropdowns pull from
the store's current scene.
- ScriptFrameDialog.vue — modal wrapping ActionEditor plus time and label
inputs; commits on close, supports deletion.
- Timeline wires the dialog: clicking a script frame opens it for edit,
clicking the empty script lane creates a new frame at that time and
opens the editor.
- i18n keys for all action types, parameters, and dialog labels.
Button-authoring UI (definitions + instance placement + properties panel)
is its own slice (4b) — this commit ships script authoring only.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>