Semiotic v3.7.0

Added

• Accessibility audit, descriptions, and structured reader navigation. auditAccessibility() /
  formatAccessibilityAudit() grade chart configs against Chartability-style heuristics, while
  describeChart(), buildNavigationTree(), AccessibleNavTree, and useNavigationSync() provide
  layered chart descriptions, WAI-ARIA tree navigation, bidirectional tree/canvas focus sync, and
  annotation-anchor focus for non-visual readers.
• IDID reader-grounding and receivability primitives. describeChart() can emit an optional L4
  communicative-act sentence from a chart capability, buildReaderGrounding() combines description,
  intent, and structure into one agent-readable payload, AudienceProfile.receptionModality lets
  suggestCharts() penalize charts a non-visual audience cannot receive, and
  accessibilityCaveats() feeds audit warnings into recommendation caveats.
• Conversation-arc telemetry. enableConversationArc(), disableConversationArc(),
  getConversationArcStore(), useConversationArc(), and summarizeArc() expose a bounded,
  opt-in event stream for suggestion, interrogation, navigation, export, and annotation-status
  events, with zero overhead while disabled. registerConversationArcSink(),
  createLocalStorageConversationArcSink(), createIndexedDBConversationArcSink(),
  createWebhookConversationArcSink(), loadConversationArc(), and replayConversationArc() add
  opt-in durable capture and replay hydration without duplicating sink or analytics events.
• Variant-discovery API and MCP tool. proposeVariant() emits registered variants,
  conservative heuristic transforms, and same-intent cross-family alternatives;
  evaluateVariantProposal() scores fit, novelty, risk, rubric deltas, and audience bias; and
  MCP now exposes proposeChartVariants for agent-driven variant exploration.
• Chart repair workflow primitive. repairChartConfig() and the MCP repairChartConfig tool
  use capability fit and chart suggestions to critique a proposed chart choice and return safer
  alternatives for agent retry loops.
• semiotic/value and BigNumber. A focal-value KPI component now ships as a lightweight value
  entry point, with formatting, threshold, comparison/target, staleness, push-buffer, and slot APIs
  for embedding trend or chart context.
• First-class annotation design assistance for 3.7.0. autoPlaceAnnotations now composes collision-aware placement, curved connector routing, density budgets, progressive disclosure, responsive shedding, redundant association cues, cohesion modes, audience-aware amount, and defensive annotations. Per-annotation emphasis establishes hierarchy, while provenance confidence supplies a default reading order when hierarchy is not explicit.
• Annotation provenance and editorial lifecycle. AnnotationProvenance and AnnotationLifecycle carry actor, evidence, confidence, stable identity, freshness, editorial status, and supersession metadata. applyAnnotationLifecycle, applyAnnotationStatus, and filterAnnotationsByStatus keep visual treatment, descriptions, and structured navigation aligned on the current annotation set.
• Stable semantic annotation anchors. anchor: "semantic" / lifecycle.anchor: "semantic" now re-resolves annotations through provenance.stableId after data refresh, using point scene nodes or matching data rows before falling back to the recorded coordinate when the target is gone.
• Annotation reception surfaces. describeChart leads with author-marked features, buildNavigationTree adds an Annotations branch, and the accessibility audit checks color-only note-to-target association.
• Annotation connector diagnostics. diagnoseConfig() now warns about far notes without a
  connector and very long connectors, keeping placement guidance aligned with the annotation design
  assistant.
• Annotation design guidance docs. The first-class Annotations docs section now includes Overview, Design Guidance, Advanced Annotations, and Provenance & Lifecycle pages with live examples.
• Linked-hover series mode. linkedHover={{ mode: "series" }} now resolves each chart's
  series-identity field automatically, with seriesField available as an override for cross-chart
  series highlighting.
• Capability-driven visual baseline gate. check:visual-baseline-capabilities derives SSR and
  linked-hover visual coverage requirements from chartSpecs.ts, verifies the current Playwright
  evidence, and keeps the remaining SSR/CSR parity and linked-hover interaction snapshots in
  one-way burn-down maps. It is wired into CI, release:check, and prepublishOnly.
• Shareable, restorable docs playgrounds. Every /playground/* page now
  serializes its knob + dataset state into the URL (?sc=…&ds=…) and restores it
  on load, with "Copy link" and "Copy config (JSON)" affordances. The round-trip
  dogfoods the library's own toConfig / toURL / fromURL / fromConfig /
  copyConfig so a playground configuration becomes a portable, inspectable
  ChartConfig artifact; non-serializable composite playgrounds degrade
  gracefully (no toolbar, no URL writes).
• Faithful "Copy" in docs live examples. The code a docs LiveExample copies to the clipboard
  now serializes the real props the chart rendered with, instead of the trimmed/elided display stub —
  so copied example code reproduces the example rather than referencing undefined or shortened values.
  Display stays readable; copy is runnable. The pure code-generation moved to a React-free
  codegen module.
• Generated, complete llms.txt. docs:llms (scripts/generate-llms-txt.mjs) regenerates the
  root llms.txt retrieval index with the full chart catalog derived from chartSpecs (grouped by
  family, every charted component), each entry tagged with its communicative act
  (resolveCommunicativeAct) so an agent reader gets what a chart is for, not just what it shows.
  Replaces the previously hand-maintained (and stale) index; kept fresh by the check:llms gate in CI
  and release:check, and regenerated during website:build.
• Docs: per-chart "At a glance" grounding panel. A reusable ChartGrounding component renders,
  live for each chart, the communicative act it performs (buildReaderGrounding), a layered L1–L3
  description (describeChart), the chart type's reader caveats, and an accessibility badge
  (auditAccessibility — hovering the badge lists the specific findings; clicking opens the full
  audit) — the reader/agent grounding for the chart, computed from the shipped intelligence APIs so it
  can't drift. Now on all 39 static chart pages (props centralized in a reviewed fixtures map;
  realtime/push-only charts are exempt), and enforced by check:docs-coverage.
• Docs: "Reshape to unlock" generative suggestions. The /choose picker now goes beyond charts the
  data already fits: from a flat table's field profile it proposes the transform that unlocks
  Semiotic's distinctive charts — pivot two columns into a Sankey, stamp an event log with time for
  a ProcessSankey, nest categories into a Treemap, etc. — each with the reshape and why that
  chart is worth it. Surfaces the flow/temporal/hierarchy/geo charts that a fit-only recommender can
  never reach. Driven by a pure suggestReshapes(profile) heuristic.
• Docs: "Choose a Chart" front door. A new top-level /choose page profiles a dataset and ranks
  the catalog by fit and communicative act (live suggestCharts), showing each recommendation's score,
  reasons, and caveats with links to the chart pages. An audience selector demonstrates how the ranking
  shifts per reader — with the biasing familiarity/targets and their rationale shown — and surfaces
  governed stretch picks. Users can arrive with data and intent instead of a component name.
• Docs: a11y hooks & theming serialization. The Accessibility docs now cover the preference hooks
  useReducedMotion / useHighContrast and the useNavigationSync tree↔canvas sync hook; the Theming
  docs now cover resolveThemePreset, themeToCSS, themeToTokens, and building custom theme objects.
  Custom Charts cross-links the related Cookbook recipes.
• Docs: AI authoring & tooling pages. The Intelligence docs section gains four pages closing the
  previously-undocumented AI surface: CLI & MCP (every npx semiotic-ai flag and every
  npx semiotic-mcp tool, with agent setup), Variant Discovery & Repair (proposeVariant,
  evaluateVariantProposal, registerVariantDiscovery, repairChartConfig), Capability Authoring
  (the ChartCapability descriptor, registerChartCapability, registerIntent, and the intent
  taxonomy), and Audience Profiles (the AudienceProfile shape, suggestion bias, stretch picks,
  reception modality, and governance).
• Playground control-drift gate. check:docs-playground-controls checks each playground's
  select knobs against chartSpecs.ts: a knob bound to an enum-typed prop can no longer offer an
  option the chart doesn't accept. It only gates enum-typed props (and treats mapProps-transformed
  pages as informational), so an enum member renamed in the API now fails the build instead of
  leaving a dead knob. Wired into CI, release:check, and prepublishOnly.
• Prop-table drift gate. check:docs-prop-tables resolves each chart's prop surface from
  chartSpecs.ts (ownProps over resolved PROP_BAGS) and AST-checks every chart page's
  documented prop names against it, failing if a statically-required prop is undocumented. It keeps
  the hand-authored tables (and their curation) verifiable against the canonical registry rather than
  replacing them; --verbose reports props documented but absent from chartSpecs as a follow-up
  backlog. Wired into CI, release:check, and prepublishOnly.
• Docs coverage gate + per-page quality bar. check:docs-coverage derives the required
  chart-page set from chartSpecs.ts and verifies every chart page renders the standard contract
  (ComponentMeta, a prop table, and an interactive example), with one-way burn-down maps for the
  three charts documented elsewhere. Wired into CI, release:check, and prepublishOnly. The
  previously-inconsistent ConnectedScatterplot, DifferenceChart, LikertChart, OrbitDiagram,
  BigNumber, and ProcessSankey pages were backfilled to meet the bar.
• Expanded SSR/CSR visual parity matrix. Shared Playwright fixtures now cover the high-risk
  SSR paths for DifferenceChart, Heatmap, QuadrantChart, geo maps, and statistical ordinal
  charts, plus frame background/foreground graphics, a dark-theme SSR case, annotation callouts,
  progressive disclosure, lifecycle/status styling, geo annotations, and a network widget
  annotation browser fixture. The supportsSSR burn-down drops from 29 to 17 entries.

Changed

• Default tick/axis font size raised from 10px to 12px across every shipped theme, the runtime
  light/dark/high-contrast defaults, and the SVG-overlay CSS-var fallbacks, so axis text clears
  Chartability's 9pt/12px legibility floor out of the box. auditAccessibility's
  perceivable.small-text heuristic now reports pass on the defaults instead of warning, and the
  ChartGrounding docs badge leads with the verdict ("Passes a11y · N advisories") with the specific
  findings surfaced on hover. Override per chart via theme.typography.tickSize or the
  --semiotic-tick-font-size CSS variable.
• Annotation note-type semantics are centralized so layout, density, diagnostics, and accessibility checks agree on what counts as a note and which notes draw connectors.
• Static SVG annotation rendering now uses the shared note renderer for labels and callouts, including callout-circle and callout-rect.
• React hooks linting now enforces react-hooks/rules-of-hooks, with exhaustive-deps staged as a
  warning while legacy dependency sites are burned down.
• check:capabilities now rejects serverChartConfigs.ts entries that are absent from
  chartSpecs.ts, with an explicit server-only exception for Sparkline.

Fixed

• Hook-order regressions across loading/empty/data transitions were fixed across the HOC catalog,
  including the remaining Minimap validation early-return path, so charts no longer trip React's
  "Rendered more hooks than during the previous render" failure when async data arrives.
• Animated network charts (OrbitDiagram and other hierarchy layouts) no longer crash the tab when
  given unmemoized function props. The hierarchy-ingest effect in StreamNetworkFrame no longer
  re-runs on pipeline-config identity changes — so a parent passing fresh inline-arrow callbacks
  (nodeStyle, revolution, …) on each render no longer re-ingests data and fires a setState per
  render, which previously compounded with the continuous animation frame loop until React's
  max-update-depth guard tripped and the page ran out of memory. Config/style changes are still
  applied (via the dedicated updateConfig effect), and data/dimension changes still re-ingest.
• callout-circle and callout-rect are now handled by the default annotation rules instead of being documented but silently skipped.
• Label and callout rules now pass connector disable, opacity, and stroke-dasharray metadata through to the annotation renderer, allowing lifecycle and editorial status treatments to render as documented.
• Value-anchored annotations now have explicit regression coverage for sort, filter, and rescale
  reflow so labels stay bound to their data values rather than incidental array positions.
• Progressive disclosure now reveals deferred annotations in geo frames and correctly hides/reveals network HTML widget annotations.
• Colored statistical overlays are no longer misclassified as color-only annotation-to-target correspondence failures.
• Variant discovery now mirrors suggestCharts for non-visual audiences: evaluateVariantProposal
  audits a proposal's props and folds the receivability penalty into its fit, so
  proposeChartVariants no longer ranks variants that can't be received via the declared modality.
• The "horizontal ranked view" variant heuristic is restricted to categorical charts that actually
  expose orientation + sort (BarChart, GroupedBarChart, StackedBarChart, DotPlot),
  preventing unsupported prop leakage onto Pie/Donut/Gauge/Likert/Swimlane.
• The MCP proposeChartVariants tool strips the non-serializable buildProps function from each
  proposal in structuredContent, keeping the JSON output transport-safe while preserving the
  computed props.