release 1.3.2: update from Gitea, Linux-only CLI, desktop app for Linux and Windows

The updater reads latest.json from Gitea, built by scripts/make-latest-json.py
against the Gitea API (no gh CLI). Release workflow builds the Linux CLI and
the Linux+Windows desktop app, signs the updater artifacts and attaches
everything to the release.

Needs the repo secrets TAURI_SIGNING_PRIVATE_KEY and
TAURI_SIGNING_PRIVATE_KEY_PASSWORD, which I could not set (secret-store writes
are reserved for the user) - set them from ~/.tauri/guara-updater.key and
.pass before pushing a tag.

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

.gitignore

@@ -17,3 +17,7 @@ node_modules/
 *.img
 *.guara-session.json
 .DS_Store
+
+# Pacotes gerados por scripts/package-cli.sh
+/guara-v*
+/dist-gui