ci/cd: unify both workflows on one seven-platform matrix

CI and CD now run the same seven environments in a single matrix:
Debian 12, Fedora 41, Arch and openKylin x64+arm64 in their distro
containers plus the macOS (12x) and Windows (32x) hosts, with identical
dependency lists and runner sizes, so a package a CD build needs cannot
be missing in CI. CD keeps building every package from scratch (no
vcpkg/cargo caches).

Fixes every failure the last CD run exposed:
- deb packaging: dpkg-shlibdeps needs a Debian source tree (give it a
  synthetic debian/control) and Debian 12/openKylin carry an older libva
  than FFmpeg 8 needs (vaMapBuffer2), so vcpkg's libva/libdrm ship next
  to the app with an $ORIGIN RUNPATH;
- AppImage: register the vcpkg libs with ldconfig so linuxdeploy finds
  libva-drm.so.2;
- Fedora: install perl-IPC-Cmd (vcpkg's openssl port requires it);
- macOS: cargo-packager produces "Oak Video Editor.app"; resolve the
  bundle instead of assuming "Oak.app";
- Windows: the vendored OCIO is compiled /MD, so drop +crt-static (the
  LNK2038 RuntimeLibrary mismatch) and bundle the MSVC runtime DLLs
  app-locally;
- containers: pin HOME for rustup and give WarpCache its token on the
  cache steps only (job-level env cannot reference the env context).

.github/actionlint.yaml

@@ -1,10 +1,15 @@
-# actionlint configuration: whitelist the WarpBuild runner labels used by
-# the CI/CD workflows so `actionlint ci.yml` / `actionlint cd.yml` passes.
-# See https://github.com/rhysd/actionlint/blob/main/docs/config.md
+# actionlint configuration (dev tooling; not used by GitHub Actions).
+#
+# WarpBuild's runner labels are not in actionlint's built-in list; declare
+# the sizes this repository uses so `actionlint` stops warning about them.
 self-hosted-runner:
   labels:
     - warp-ubuntu-latest-x64-8x
+    - warp-ubuntu-latest-x64-16x
+    - warp-ubuntu-latest-x64-32x
     - warp-ubuntu-latest-arm64-16x
-    - warp-windows-latest-x64-16x
-    - warp-windows-2025-vs2026-x64-16x
+    - warp-ubuntu-latest-arm64-32x
     - warp-macos-26-arm64-6x
+    - warp-macos-26-arm64-12x
+    - warp-windows-2025-vs2026-x64-16x
+    - warp-windows-2025-vs2026-x64-32x