v3.0.0 — Julia & JavaScript, 15 libraries & the Imprint palette

anyplot 3.0 doubles the language count: Julia and JavaScript join Python and R, growing the catalog from 10 to 15 libraries — including anyplot's first browser-rendered libraries and its first React library. Every existing implementation was re-colored with the new Imprint palette, the frontend was fully restructured with CI quality gates, and the render pipeline got hard quality gates on a new, sharper canvas. One clean break earns the major version: Highcharts is now native JavaScript — its legacy Python-wrapper implementations were removed.

🟪 Julia / Makie.jl (3rd language)

• Julia 1.11 + Makie.jl (CairoMakie backend) added with full pipeline support — CI runtime via setup-julia, Project.toml environment, makie arms in every impl workflow, dedicated prompts, Julia syntax highlighting in the code viewer (#7613; fixes #7614, #7835).
• 74 Makie.jl implementations at release cut, backfill continuing via bulk-generate.

🟨 JavaScript (4th language): Chart.js, D3.js, Apache ECharts

• First browser-rendered runtime: a Node 22 + Playwright headless-Chromium harness (automation/js-render/render.mjs) renders each snippet at exact gallery pixels and emits both the PNG and a self-contained interactive HTML (#8244).
• Chart.js 4.4.7, D3.js 7.9.0, Apache ECharts 5.5.1 — 30 implementations each at release cut.
• JS implementations show the Interactive toggle on the site, same model as the Python interactive libraries (#8251).
• The library registry gained a framework field (none/react/vue/svelte/angular) and per-library file-extension overrides, so future framework libraries are registry-only additions (#8244).

⚛️ MUI X Charts — first React library

• Community @mui/x-charts 7.29.1 (MIT) as the first framework: react and first .tsx library: the render harness gained an esbuild branch that bundles React components in a theme-aware MUI ThemeProvider (#8517).

⚠️ Breaking: Highcharts migrated Python → JavaScript

• Highcharts is now the native highcharts.js 12.6.0 instead of the highcharts-core Python wrapper 1.10.0 — following the "most-used variant" rule (~1M vs ~5k weekly downloads) (#8516).
• Clean break: all 322 legacy Python implementations (plus metadata) were removed; JS implementations are being regenerated via bulk-generate. Old Python deep links fall back to the spec hub.

🎨 Imprint — anyplot's new palette

• New 8-hue colorblind-safe categorical palette + 3 semantic anchors, replacing Okabe-Ito project-wide. Tuned for warm-paper rendering, validated against deuteranopia/protanopia/tritanopia, with a named API in core/palette.py and imprint_seq / theme-adaptive imprint_div colormaps (#7692; selection process #7617; closes #5817).
• All ~1,300 existing implementations migrated in a one-shot deterministic hex-swap wave across all libraries (#7776–#7798), with semantic red/amber/green restored where color carries meaning (#7777).
• /palette rebuilt twice: per-pixel OKLCH color wheel, hue cards with chroma/ΔE/WCAG metrics, compare-with overlays (Okabe-Ito, Tol muted, Set2), unified IMPRINT copy-paste object for Python/R/Julia/JS, and 10×10 pairwise ΔE matrices for normal + CVD vision (#7692, #8125; fixes #7997, #8005, #7713; consistent prompt naming #7892).

🖥️ Frontend modernization

• 11-PR restructure of app/ complete: routes/ paths registry, layouts/ + sections/ split, feature folders, central API client, theme module, typed global config, src/* aliases (#8519–#8581), documented in a new app/ARCHITECTURE.md (#8596).
• Frontend CI gates: Prettier, sorted imports, unused-import lint, and full type-checking (incl. test files) now run on every PR — previously no frontend lint/type-check ran in CI at all (#8519).
• Perf: above-the-fold landing counts no longer stall up to 2 s, /specs thumbnails lazy-load, /stats uses aggregate COUNT queries, empty-filter fast path for /plots/filter (#7694).
• UI fixes: tag chips correctly filter /plots again (#7516), visitors chart includes today (#7610), copy Claude-Code-ready prompts from feedback on /debug (#7611), masthead on xs (#7891), dark-mode overlay buttons (#8021), library-card blurbs for the JS libs (#8254).

📐 Render quality

• Canvas halved to 3200×1800 / 2400×2400 with proportional-sizing review rules, validated by a 540-render style experiment (#7387); typography recalibrated across all libraries (#7389, #7391–#7428).
• Hard canvas-size gate: every PNG must hit the exact target dimensions (±16 px), enforced pre-AI-review with delta-aware repair messages (#7517).
• AR-09 edge-clipping auto-reject: text touching the canvas border scores 0; altair switched to PAD-only normalization (#7528).
• Prompt guards: long titles auto-shrink (#7682), ggplot-family geom_text mm-vs-pt warning (#7714).

🔧 Pipeline & ops

• Watchdog now rescues stale ai-approved, attempt-less ai-rejected, and label-less impl PRs by re-dispatching the right workflow (#7687); impl-merge sweeps stale impl:LIB:failed labels (#7616).
• daily-regen cadence rebalanced to 10× daily, default model Haiku → Sonnet (#7717, #7286).
• impl-generate can overlay prompts/ from the trigger branch — pipeline prompt experiments without merging to main first (#7385).
• Fixed the dual alembic heads that had stalled the production Postgres sync (#7285); fixed silent chartjs/d3 version-lookup failures (#8248); unbroke red main from a duplicate ruff key (#7683).
• /audit retooled to be goal-directed across 6 graded dimensions; first all-scope run committed: 86 findings, 1 critical (#8023, #8024).
• Repo hygiene: rendered artifacts untracked + Julia Manifest committed (#7835), Serena leftovers removed (#8518), Context7 config added (#8084).

⬆️ Dependencies

21 updates: playwright 1.49→1.55, esbuild 0.24→0.25, aiohttp 3.13→3.14, idna 3.11→3.15, uvicorn ≥0.48, sqlalchemy ≥2.0.50, pyjwt ≥2.13, claude-code-action 1.0.133, plus grouped python-minor/npm-minor/MUI/react/actions bumps.

🔁 Regen & catalog

• 885 regenerations + 310 new implementations landed across the 15 libraries; 46 automated spec-polish PRs refined tags and wording.
• Catalog steady at 327 specs; R/ggplot2 coverage grew 30 → 126; the first 8 specs reached full 15/15 library coverage (pp-basic, scatter-connected-temporal, line-yield-curve, acf-pacf, recurrence-basic, funnel-meta-analysis, line-load-duration, area-elevation-profile).

Full Changelog: v2.4.0...v3.0.0