Module settings_cmd 

Tauri commands for reading and updating application settings.

Commands

• settings_get — return the current Settings snapshot.
• settings_update — apply a JSON patch, validate, persist atomically.

Both commands take tauri::State<SettingsHandle> so they share the same Arc<Mutex<Settings>> that was seeded at app start.

Hot-reload

settings_update also pushes runtime-affecting changes into the live services:

• proxy → ClientPool::set_proxy (rebuilds connectors).
• transfer_concurrency→ TransferQueue::rebuild_semaphore.

Cache TTL changes still require an app restart — the cache stores them as immutable config at open time.

Functions

json_merge 🔒

Recursive JSON merge (RFC 7396 spirit).

settings_get

Return the current settings as a serialised Settings value.

settings_update

Apply a JSON patch to the current settings, validate, and persist.