Fretboard Lab QA Checklist

Use this checklist for each release candidate before publishing downloads or website copy.

Run Metadata

Short file: import or open a small chord/progression fixture if supported; the app loads it and exports diagrams without state loss.
Long file: import or paste a long progression with at least 200 chord symbols; search, filtering, and export remain responsive.
Chinese path: export PNG, PDF, Markdown, and JSON to a path such as 测试素材/指板图/Cmaj7.pdf; filenames and links remain valid.
Damaged file: open a malformed progression, JSON, or preset file; the app reports the line or field problem without crashing.
Huge file: try a progression or batch input near the documented size limit; the app rejects or processes it with visible progress.
Unsupported file: drop an audio file or random binary file into any import path; the app rejects it without showing audio-specific controls.

Confirm Fretboard Lab does not require audio sampling rate settings for normal chord lookup and diagram export.
If an audio or MIDI preview path exists, verify 44.1 kHz and 48 kHz playback/export settings do not affect chord spelling or fingering results.
Importing files with audio-only metadata must not create a fake chord chart or silently discard errors.

Enter common chord symbols: C, Cmaj7, Am7, Dm7b5, G7b9, F#dim, and slash chords.
Enter roman numeral progressions and confirm key changes update chord names correctly.
Browse generated fingerings by position, span, open strings, and difficulty.
Change tuning from standard to Drop D, DADGAD, Open G, Open D, and Half Step Down; diagrams update without stale fret positions.
Export selected diagrams only, then reopen the exported files in external viewers.
Bulk export a progression and confirm order, chord labels, tuning, and diagram count are stable.

No license: community chord lookup and basic export work; professional bulk export shows the correct locked state.
Valid online license: larger bulk export workflows and checkout license-key activation are available.
Activated license state: app launches with no network and preserves professional features.
Tampered or wrong-product license: app rejects the license without deleting local presets or exports.
No network: chord parsing, fingering generation, named tunings, and export all work.

No console panic or unhandled promise rejection during chord entry -> fingering browse -> tuning change -> export.
Release notes mention any remaining chord parser ambiguity or export limitation.
Screenshots and help copy match the current UI labels.