Add Fedora packaging and fix crates.io SDK build.

Remove the local proton-sdk path patch so the workspace builds from published crates, and document Fedora 44 build/runtime plus a local RPM spec.

Co-authored-by: Cursor <cursoragent@cursor.com>

packaging/proton-drive-linux.spec

@@ -0,0 +1,87 @@
+# Local in-tree RPM (mirrors packaging/PKGBUILD).
+# From the repository root:
+#   rpmbuild -bb packaging/proton-drive-linux.spec --define "git_dir $PWD" ...
+# %build needs network so cargo can fetch crates.io (same trade-off as the Arch PKGBUILD).
+
+%global debug_package %{nil}
+# Match Arch PKGBUILD `!lto` — LTO has broken some GTK/Rust links in practice.
+%global _lto_cflags %{nil}
+
+Name:           proton-drive-linux
+Version:        0.4.0
+Release:        1%{?dist}
+Summary:        Proton Drive client for Linux (FUSE, CLI, GTK4 app + tray)
+License:        MIT
+URL:            https://github.com/narl/proton-drive-linux
+ExclusiveArch:  x86_64
+
+BuildRequires:  cargo
+BuildRequires:  rust
+BuildRequires:  pkgconf-pkg-config
+BuildRequires:  fuse3-devel
+BuildRequires:  gtk4-devel
+BuildRequires:  libadwaita-devel
+BuildRequires:  libsecret-devel
+BuildRequires:  dbus-devel
+BuildRequires:  glib2-devel
+
+Requires:       fuse3
+Requires:       gtk4
+Requires:       libadwaita
+Requires:       libsecret
+Requires:       xdg-utils
+
+# DE-specific; do not Require a single desktop environment.
+Recommends:     gnome-keyring
+Recommends:     gnome-shell-extension-appindicator
+Recommends:     kwallet
+
+Provides:       pdfs = %{version}-%{release}
+
+%description
+Unofficial Proton Drive client featuring a FUSE files-on-demand mount,
+CLI, GTK4/Libadwaita GUI, system tray, and search launcher.
+
+%prep
+# In-tree build: no Source tarball. Pass --define "git_dir /path/to/checkout".
+test -n "%{?git_dir}" || (echo 'Pass --define "git_dir $PWD" from the repo root' >&2; exit 1)
+test -f %{git_dir}/Cargo.toml
+cp -a %{git_dir}/LICENSE .
+%build
+cd %{git_dir}
+cargo build --release --locked \
+  --bin pdfs \
+  --bin pdfs-tray \
+  --bin pdfs-app \
+  --bin pdfs-prompt
+
+%install
+rel=%{git_dir}/target/release
+install -D -m0755 "$rel/pdfs"        %{buildroot}%{_bindir}/pdfs
+install -D -m0755 "$rel/pdfs-tray"   %{buildroot}%{_bindir}/pdfs-tray
+install -D -m0755 "$rel/pdfs-app"    %{buildroot}%{_bindir}/pdfs-app
+install -D -m0755 "$rel/pdfs-prompt" %{buildroot}%{_bindir}/pdfs-prompt
+
+install -D -m0644 %{git_dir}/packaging/io.narl.proton-drive-linux.desktop \
+  %{buildroot}%{_datadir}/applications/io.narl.proton-drive-linux.desktop
+install -D -m0644 %{git_dir}/packaging/io.narl.proton-drive-linux-tray.desktop \
+  %{buildroot}%{_sysconfdir}/xdg/autostart/io.narl.proton-drive-linux-tray.desktop
+install -D -m0644 %{git_dir}/packaging/io.narl.proton-drive-linux.svg \
+  %{buildroot}%{_datadir}/icons/hicolor/scalable/apps/io.narl.proton-drive-linux.svg
+install -D -m0644 %{git_dir}/packaging/proton-drive.service \
+  %{buildroot}/usr/lib/systemd/user/proton-drive.service
+
+%files
+%license LICENSE
+%{_bindir}/pdfs
+%{_bindir}/pdfs-tray
+%{_bindir}/pdfs-app
+%{_bindir}/pdfs-prompt
+%{_datadir}/applications/io.narl.proton-drive-linux.desktop
+%{_sysconfdir}/xdg/autostart/io.narl.proton-drive-linux-tray.desktop
+%{_datadir}/icons/hicolor/scalable/apps/io.narl.proton-drive-linux.svg
+/usr/lib/systemd/user/proton-drive.service
+
+%changelog
+* Sun Jul 19 2026 Local Packager - 0.4.0-1
+- Initial Fedora local package (in-tree cargo build).