forked from 1b-agent/opencadstudio-upstream
A periodic subscription (every SAVETIME minutes — default 10, 0 disables) writes a <name>.sv$ recovery copy of each dirty, already-saved drawing at its own DWG version. Non-destructive: it never touches the original file or the dirty flag, and skips unsaved (path-less) tabs. The SAVETIME command sets/queries the interval and persists it. Recovery files (.sv$ and .bak) open through the normal Open dialog — the loader detects DWG vs DXF from the leading magic bytes, and a "Backup / Autosave" filter lists them. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>