feat: GPUI desktop port foundation

- scene crate: full project/scene/element model, serde round-trip
  proven against the web SerializedProject shape
- transfer crate: .ocp zip container, cross-compat with web fflate
  archives proven in both directions
- storage crate: filesystem project store replacing IndexedDB,
  .ocp import/export
- media crate: ffmpeg-next 8 decoder (frames, audio, thumbnails,
  waveform summaries)
- playback crate: wall-clock anchored, frame-rounded playback clock
- gpu crate: native texture readback; compositor renders headless
  offscreen on Vulkan (spike test)
- flake devshell: rust toolchain, GPUI native deps, ffmpeg dev,
  bindgen clang args; GPUI hello-world builds
- port plan in notes/gpui-port.md

1 files changed, 12 insertions, 0 deletions

diff --git a/Cargo.toml b/Cargo.toml
index b00c78e8..5c10d41d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,5 +7,17 @@ members = [
     "rust/crates/effects",
     "rust/crates/gpu",
     "rust/crates/masks",
+    "rust/crates/scene",
+    "rust/crates/timeline",
+    "rust/crates/animation",
+    "rust/crates/commands",
+    "rust/crates/media",
+    "rust/crates/transfer",
+    "rust/crates/storage",
+    "rust/crates/text",
+    "rust/crates/graphics",
+    "rust/crates/effect-defs",
+    "rust/crates/mask-defs",
+    "rust/crates/playback",
     "rust/wasm", "rust/crates/compositor",
 ]