release 1.0.1: update from Gitea, Linux-only CLI, desktop app for Linux and Windows

The updater reads the latest release from Gitea. update::apply refuses to
overwrite anything but the CLI. Release workflow builds the Linux CLI;
scripts/build-gui.sh builds the Linux and Windows desktop app. Docs say Linux
and Windows only.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

apps/gui/src-tauri/Cargo.lock

@@ -2538,7 +2538,7 @@ checksum = "cf54715a573b99ac80df0bc206da022bcd442c974952c7b9720069370852e21f"
 
 [[package]]
 name = "sabia-core"
-version = "1.0.0"
+version = "1.0.1"
 dependencies = [
  "aes",
  "flate2",
@@ -2555,7 +2555,7 @@ dependencies = [
 
 [[package]]
 name = "sabia-gui"
-version = "1.0.0"
+version = "1.0.1"
 dependencies = [
  "libc",
  "sabia-core",