Editor surface + Record→Edit handoff — ED.5

?surface=editor routed to a placeholder (<h1>Editor</h1>). ED.5 activates it: the surface now renders the real EditorShell chrome — title bar, toolbar, and body layout — driven by the loaded EditProject, and wires the handoff that loads a finished recording into it.

The handoff

sequenceDiagram
  participant U as User
  participant JS as index.html bridge
  participant Cmd as open_in_editor (Tauri)
  participant UI as EditorSurface (Leptos)
  U->>JS: __screenOpenInEditor(path)
  JS->>Cmd: invoke("open_in_editor", { path })
  Cmd->>Cmd: probe metadata → EditProject::from_recording
  Cmd-->>JS: EditProject (serialized)
  JS->>UI: dispatch "editor-project" CustomEvent
  UI->>UI: deserialize → RwSignal&lt;Option&lt;EditProject&gt;&gt;
  UI->>U: jump to the editor, render EditorShell populated

open_in_editor (a thin Tauri command) probes the recording with gst-discoverer-1.0 and returns a default, untouched EditProject — one full-length real-time segment. The webview bridge re-emits it as an editor-project event; a Leptos listener deserializes it into a context signal that the surface reads.

```admonish important title="No mirror type — app-ui depends on edit" app-ui can't depend on screen-app (Tauri-native), but it can depend on the pure edit crate (serde-only, wasm-clean). So the command's payload deserializes straight into edit::EditProject — no hand-maintained IPC mirror struct to drift out of sync.


The surface maps the project onto the shell view-model (title = file name,
subtitle = `1920×1080 · 30 fps · m:ss`, toolbar enabled); with no clip it
shows the "No clip loaded" empty state. The canvas, timeline, and
inspector slots are filled by the chunks that follow — preview (ED.6),
transport (ED.7), timeline (ED.8), inspector (ED.18).

```admonish note title="Handoff trigger"
ED.5 lands the complete receiving mechanism (command → event → signal →
surface, with an auto-jump to the editor when a project loads). The
user-facing "Open in Editor" button on the recorder's save panel rides
in with the recordings Library (ED.24), which is where browsing and
re-opening past recordings lives.

Keyboard shortcuts

screen — engineering site

Editor surface + Record→Edit handoff — ED.5

The handoff