Lyrics Card Generator v6.0.0

Status: publicly released through GitHub Releases.

Structured lyric document engine

LyricDocumentV2 is now the lyric source of truth. Natural paragraphs are Blocks; source/translation groups are Units with stable IDs; every effective operation advances the document revision.
Plain-text paste and editing remain unchanged. A deterministic parser handles blocks, alignment, and identity reconciliation while preserving order, blank lines, and translations. Legacy archives migrate on load.
Import, editing, undo/redo, manual archives, preview, automatic layout, and export consume the same document. The former lyrics and translationText values are derived compatibility projections only.

AI translation requests and commits Unit-ID-addressed JSON and accepts only complete, correctly ordered results whose revision still matches.
Late responses, incorrect IDs, missing Units, and extra fields cannot overwrite the current document. Streaming output updates translations only after it becomes complete valid JSON.
Export snapshots freeze the lyric document, document revision, style, and resolved layout to prevent preview/export drift during editing.

Desktop and Web Lite retain the existing lyric editing experience and card visual language.
v1 manual archives remain readable. New v2 archives persist stable Block/Unit IDs behind strict boundary validation.