ci: find the desktop bundles in CARGO_TARGET_DIR

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

CONTRIBUTING.md

@@ -21,6 +21,18 @@ CI runs on Linux only (Gitea has one runner); run these before pushing — almos
 
 Live capture exists only on Linux (`AF_PACKET` + netlink); the code behind Windows and macOS paths still compiles and is covered by `cargo check`, but neither runs in CI nor is built for release.
 
+## Releases
+
+Pushing a `v*` tag makes the Gitea CI create the release (notes come from `CHANGELOG.md`, so update it first) and attach the Linux CLI (x86_64 and aarch64) and the desktop app for Linux **aarch64** and Windows. The runner is arm64, so the Linux **x86_64** desktop app comes from an x86_64 Linux machine:
+
+```bash
+scripts/build-gui.sh linux          # AppImage + .deb in dist-gui/
+API=https://git.lucasrguerra.dev.br/api/v1/repos/lucasrguerra/sabia TOKEN=... \
+  scripts/release-upload.sh vX.Y.Z dist-gui/*
+```
+
+There is no macOS build: it needs Apple's SDK and code signing, which a Linux runner cannot provide.
+
 ## Where to work
 
 Module map in [docs/architecture.md](docs/architecture.md). What's missing and welcome is in the [ROADMAP](ROADMAP.md).