feat: Electron desktop app, native ffmpeg export, fully static web

- apps/desktop: Electron shell serving the static web build over a
  privileged opencut:// protocol; exports stream frames over IPC to a
  bundled ffmpeg (libx264/libvpx-vp9, BT.709 tagged) with backpressure.
  electron-builder packaging: AppImage, deb, rpm.
- apps/web: dead backend deleted (better-auth, drizzle/pg, upstash,
  botid, freesound proxy, blog, rss, env validation); next build emits
  a zero-env static export; /editor/[project_id] -> /editor?project=.
- Native exporter mirrors SceneExporter; activates when the preload
  bridge is present; web keeps the mediabunny path.
- Docker self-hosting now builds and serves the static export via nginx.
- Release workflow: v* tags publish static web tarball + Linux packages.
- Changelog 0.4.0; README/AGENTS/CONTRIBUTING/roadmap updated.
- GPUI/Rust rewrite parked on branch rust-rewrite.

1 files changed, 0 insertions, 41 deletions

diff --git a/apps/desktop/src/main.rs b/apps/desktop/src/main.rs
deleted file mode 100644
index 0ba70959..00000000
--- a/apps/desktop/src/main.rs
+++ /dev/null
@@ -1,41 +0,0 @@
-use gpui::{
-    div, prelude::*, px, rgb, size, App, Application, Bounds, Context, SharedString, Window,
-    WindowBounds, WindowOptions,
-};
-
-struct AppWindow {
-    title: SharedString,
-}
-
-impl Render for AppWindow {
-    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
-        div()
-            .size_full()
-            .bg(rgb(0x0f0f0f))
-            .flex()
-            .justify_center()
-            .items_center()
-            .text_xl()
-            .text_color(rgb(0xffffff))
-            .child(self.title.clone())
-    }
-}
-
-fn main() {
-    Application::new().run(|cx: &mut App| {
-        let bounds = Bounds::centered(None, size(px(1280.), px(720.)), cx);
-        cx.open_window(
-            WindowOptions {
-                window_bounds: Some(WindowBounds::Windowed(bounds)),
-                ..Default::default()
-            },
-            |_, cx| {
-                cx.new(|_| AppWindow {
-                    title: "OpenCut".into(),
-                })
-            },
-        )
-        .unwrap();
-        cx.activate(true);
-    });
-}