IsoFoundry v0.9.0

[0.9.0] - 2026-11-08

Added — RC pass: audit, failure drills, accessibility, measured budgets

• Failure-drill test suite: hostile media (oversize images, non-blank discs, failed verifies), damaged discs (zero-filled bad sectors, surface damage maps), tampered and incomplete backups, malformed image files and cancelled jobs — all must fail cleanly, and now do so under test.
• Multi-drive burn from the command line: the burn commands accept --all-drives and write the same source to every drive in turn, reporting each drive's result.
• Measured performance budgets (docs/BENCHMARK.md), an accessibility statement (docs/ACCESSIBILITY.md), a capability matrix (docs/PARITY.md) and a quality scorecard (QUALITY.md).

Added — M6 integration: spanning backup, shell integration, opt-in online lookups

• Spanning backup and restore (backup, backup-restore, plus a task window with a restore variant). A folder is packed onto as many discs as it needs: files in name order, greedy packing, and any file larger than a span is split into .ifpartNNN chunks. The full plan is computed before the first disc is written, so an identical catalog (ISOFBACKUP/CATALOG.JSON, with a SHA-256 per file and per part) rides on every span next to a span marker. Backup writes one ISO per span (--out-dir), burns each span to a drive (prompting for the next blank), or rehearses against the simulated drive (--fake). Restore takes span folders or span ISOs in any order, names any missing span, joins split files and verifies every checksum.
• Completion actions that now actually fire: the sound on finish (a setting since M0 that nothing consumed until now), an optional notification balloon, and an optional shutdown after a successful task (announced, 20-second grace, cancellable with shutdown /a). The backup command has --shutdown-when-done too.
• Auto-action on disc insert (Options menu, off by default): a newly inserted data disc can open Copy disc to image, an audio CD can open Rip audio CD, or both. The job itself still starts with one click — its output folder is a per-job choice.
• Shell completion (completions powershell / completions bash): scripts generated from the live command list, so they cannot drift.
• Explorer verbs (explorer-verbs install|uninstall|status): per-user right-click entries (Checksum, Image info) for image files, no administrator rights, removed cleanly by the uninstall action.
• Opt-in update check (check-update, or on start from the Options menu): asks GitHub for the newest release and says so; off by default and never done silently — IsoFoundry still makes no network calls the user did not ask for.
• MusicBrainz disc lookup (rip --musicbrainz, a checkbox in the Rip window, an Options-menu default): disc IDs (MusicBrainz and freedb/CDDB) are computed for every audio rip and written into the rip log along with the lookup page; with the opt-in lookup the matching release's track titles name the ripped files. Rips stay fully offline when it is off.
• The M5 tasks now show as available in the task grid and list (they were built in 0.5.0 but still labelled as planned there, so the grid showed a "ships later" note instead of opening their windows; the command line was unaffected).

Fixed

• Keyboard navigation (Tab, arrow keys, access keys) did not work inside task windows — only the main window processed them. It now works in every window.
• The report command carried a stale note claiming drive probing still had to arrive; the note is corrected — the report points at isofoundry info for the live drive list.
• Listing drives on Windows could crash the whole program: the disc-drive cleanup call dropped its object pointer. Fixed, and listing drives is now exercised by a test on every run.
• --help printed an empty "not available yet" section once every task had shipped; the section only appears when it has entries.
• The Create bootable USB variant menu pointed both variants at a "planned" notice: image → USB now opens the window that does it, and USB → image says plainly that it works from the command line today (usb read).