OpenLoop v0.2.0

OpenLoop v0.2.0 — Backend Auto-Provisioning

What's New

Backend Auto-Provisioning

The ACE-Step Python backend is now automatically downloaded and installed on first launch. Previously, users had to manually git clone the backend repository into the runtime directory — a step that made the app unusable for non-developers.

• Automatic download: Backend code is fetched from GitHub as a zip archive, extracted, and version-tracked via a local manifest
• Update support: Check for and apply backend updates from the CLI (openloop backend update) or Settings UI
• Migration: Existing git-cloned backends are detected and tracked automatically
• Setup wizard: Engine download integrated into the model step (no extra wizard step)

CLI Improvements

• openloop backend provision — Download and install the ACE-Step backend code
• openloop backend update — Update backend to the latest version
• openloop backend status — Now shows backend code version (tag or commit)
• openloop doctor — New backend-code health check
• Progress display adapts to TTY vs piped output
• openloop models list syncs downloaded models from manifest for DB consistency
• HTTP timeout (300s) added to prevent hung requests

Settings UI

• Backend Engine section shows installed version and update availability
• Update button when a newer version is detected
• Check for updates button

Upgrade Notes

No breaking changes. Existing installations will detect the current backend code and write a manifest automatically on first run.

File Changes

New files:

• src-tauri/src/services/backend_provisioner.rs — Core provisioning service (~1200 lines)
• src-tauri/src/commands/provisioner.rs — Tauri IPC commands

Key modifications:

• Backend manager now checks provisioning before starting
• Model bootstrap status extended with provisioning_backend state
• Setup wizard shows engine download progress
• i18n strings added for EN and ZH-CN