{
  "schemaVersion": 1,
  "package": "typeset.us",
  "version": "4.2.0",
  "status": "public-release",
  "mountOwnership": { "scope": "same target, same engine instance", "policy": "first claim owns; waiting controllers take over after release", "diagnostic": "controller.stats.overlappingTargets", "integration": "use disjoint text roots and one engine copy" },
  "inlineNoWrap": { "supported": "ordinary white-space:nowrap inline phrases within wrapping rich text", "preserves": ["protected break boundaries", "styled descendants", "source and author elements"], "overflow": "native:no-candidate with unbreakable-run constraint" },
  "nameGrouping": { "language": "declared English", "scope": "capitalized names followed by street or institution designators", "policy": "bounded soft preference; substantial final location words allowed in titles", "limit": "not a semantic parser or arbitrary brand recognition" },
  "defaults": { "lineBreaks": "unicode", "density": "compact with one-line default body allowance for stranded sentence/clause openers; explicit compact/maxLines respected", "spacing": true, "tracking": true, "contour": "finished", "smartQuotes": false, "opticalHanging": false, "listStyling": "explicit" },
  "contour": { "basis": "predicted finished widths using the rendering space policy", "beamCompletedPool": 200, "shortParagraphs": "budgeted exhaustive search", "evidence": "result.search", "comparison": "contour: natural" },
  "spacing": { "scope": "composed, left-aligned body text", "level": "full V3 neighbor/median finish", "deltaBounds": "-20 percent to +33 percent of each measured natural space; authored spacing retained", "preserves": ["chosen breaks", "final line", "author elements", "source text"], "fallback": "retain unspaced composition and report native:spacing-verification" },
  "languages": ["en", "fr", "de", "es"],
  "tracking": { "scope": "default Unicode composed left-aligned body text, after verified word spacing", "maxDeltaEm": 0.01, "maxRuns": 256, "preserves": ["chosen breaks", "final line", "author elements", "source text", "authored spacing"], "excluded": ["code/kbd/samp", "joining scripts", "unresolved relative spacing", "legacy plain renderer"], "fallback": "roll back tracking only; report native:tracking-verification", "disable": "tracking: false, or data-typeset-tracking=false; spacing: false disables both finishes" },
  "scheduling": { "discovery": "changed subtrees; no whole-document rescan for unrelated mutations", "priority": "initially near-viewport targets", "batchTargetMs": 8, "hardDeadline": false, "recomposes": ["text", "font", "width", "context"], "limit": "one composition, initial discovery and browser layout may exceed the batch target" },
  "untaggedLanguage": "neutral Latin-script preferences; no language inference",
  "react": { "testedVersion": "19.2.3", "entry": "typeset.us/react", "customComponentChildren": "native:react-component" },
  "node": ">=22",
  "browserRequirements": ["Intl.Segmenter", "ResizeObserver", "MutationObserver", "FontFaceSet", "CSS text-wrap"],
  "unsupported": ["automatic hyphenation", "soft hyphens", "mixed languages in one block", "RTL and vertical text", "editable text", "inline widgets", "unsupported inline box decoration", "scale, rotation, perspective and nonzero Z transforms"],
  "inlineCode": { "supported": "normal whitespace, overflow-wrap:break-word and nonnegative sliced padding/borders/margins measured in context", "tracking": false },
  "quotes": { "mode": "explicit English", "lengthPreserving": true, "dashesAndEllipses": "not changed", "richReactRequires": "lang=en on the adapter" },
  "opticalHanging": { "mode": "explicit", "scope": "full measured leading punctuation and raster-measured optical capitals on composed lines or fitting single lines", "capitalMaxEm": 0.08, "clipping": "full glyph must fit available clip/padding/scrollport; partial line coverage reported", "unsupported": ["centered or justified text", "insufficient clip room", "unknown clip paths/masks", "scale/rotation/perspective transforms", "author text indentation", "custom font-feature/variation settings unsupported by canvas, including onum"] },
  "lists": { "entry": "styleProseLists", "stylesheet": "typeset.us/styles.css", "scope": "explicit unordered prose lists", "marker": "native ::marker", "excluded": ["navigation", "ordered lists", "custom markerless lists", "flex and grid lists"] },
  "verification": { "cli": "typeset-audit", "api": "auditJSON", "schemaVersion": 1, "passMeans": "nonempty scope, no hard errors, no unprocessed targets", "doesNotMean": "aesthetic perfection, all targets composed, or source preservation without a before capture" },
  "telemetry": "none",
  "websiteLoader": { "selector": "automatic prose and headings; data-typeset-selector overrides", "smartQuotes": "en", "opticalHanging": true, "npmGoSelector": "[data-typeset]" },
  "outstandingAcceptance": ["physical iOS and Android", "spoken VoiceOver and NVDA", "non-macOS and native-application rich clipboard", "representative-device performance"],
  "releaseApproval": "owner-approved with documented testing limits"
}