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, 19 insertions, 0 deletions

diff --git a/.direnv/bin/nix-direnv-reload b/.direnv/bin/nix-direnv-reload
new file mode 100755
index 00000000..22154755
--- /dev/null
+++ b/.direnv/bin/nix-direnv-reload
@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+set -e
+if [[ ! -d "/home/cashmere/opencut-classic" ]]; then
+  echo "Cannot find source directory; Did you move it?"
+  echo "(Looking for "/home/cashmere/opencut-classic")"
+  echo 'Cannot force reload with this script - use "direnv reload" manually and then try again'
+  exit 1
+fi
+
+# rebuild the cache forcefully
+_nix_direnv_force_reload=1 direnv exec "/home/cashmere/opencut-classic" true
+
+# Update the mtime for .envrc.
+# This will cause direnv to reload again - but without re-building.
+touch "/home/cashmere/opencut-classic/.envrc"
+
+# Also update the timestamp of whatever profile_rc we have.
+# This makes sure that we know we are up to date.
+touch -r "/home/cashmere/opencut-classic/.envrc" "/home/cashmere/opencut-classic/.direnv"/*.rc