v0.3.0-beta

• 2026-08-01
• Changed — the plot tool was reworked from a doc cheat-sheet into a questionnaire-driven plot generator
  • Pick one of eight plot types (line, scatter, bar, pie, histogram, box, heatmap, dual-axis), fill in the fields (title, data, colors, …), and preview the generated JSON/TOML live; --no-preview disables the live refresh.
  • Validation flags missing required fields and malformed numbers inline; c copies to the clipboard, s saves to plot-<type>.json/.toml, and r restores the built-in example.
• Changed — TUI visuals reworked to the "biomorphic organic" paper palette: Layer / density_char / rounded-panel Block helpers, a solid-accent status band, and TrueColor → 256 → 16 → none colour adaptation via supports-color, so the paper background never garbles an older terminal.
• Added — the plot generator schema: docs/PLOT-SCHEMA.json plus a -zh_CN translation, the single source of truth for generator fields, targets, and examples. It is embedded at compile time, so the generator works fully offline.
• Added — programmatic visual regression tests (tests/test_tui_visual.rs, ratatui TestBackend) and dedicated docs-schema-test / tui-visual-test CI jobs.
• Removed — the machine-readable USAGE schema (docs_parser, the <!-- usage-schema --> / <!-- plot:begin/end --> markers, docs/USAGE-SCHEMA.md, the --refresh flag, and the GitHub raw endpoint override). All plot data now comes from the schema file, so nothing is parsed out of the manual and there is no second place to maintain.
• Changed — schema language selection (MDBOOK_PLOTLY_LANG → [language] doc → system locale) now picks the localized schema instead of the manual.
• Fixed — none (no behavior changes to the preprocessor itself).