{
  "$schema": "https://ui.shadcn.com/schema/registry-item.json",
  "name": "approval-gate",
  "title": "Approval gate",
  "description": "Approval gate is a production-ready ai component from BJORK UI, packaged for shadcn registries.",
  "dependencies": [
    "clsx",
    "framer-motion",
    "next-themes",
    "tailwind-merge"
  ],
  "files": [
    {
      "path": "components/bjork-ui/ai/approval-gate.tsx",
      "content": "\"use client\";\n\nimport {\n  useCallback,\n  useEffect,\n  useId,\n  useLayoutEffect,\n  useRef,\n  useState,\n  type KeyboardEvent as ReactKeyboardEvent,\n  type MouseEvent as ReactMouseEvent,\n} from \"react\";\nimport { LiveRegion } from \"@/components/bjork-ui/_core/a11y\";\nimport { easeCss } from \"@/components/bjork-ui/_core/motion\";\nimport {\n  AI_CARD,\n  AI_WELL,\n  FOCUS_RING,\n  PRESS,\n  useAiTone,\n  useControllable,\n  useReduceMotion,\n  type BjorkTone,\n} from \"@/components/bjork-ui/ai/_shared\";\nimport { StrokeMorphIcon } from \"@/components/bjork-ui/utilities/stroke-morph-icon\";\nimport { cn } from \"@/lib/utils\";\n\nexport type ApprovalRisk = \"low\" | \"medium\" | \"high\";\nexport type ApprovalStatus = \"pending\" | \"approved\" | \"denied\";\n\nexport interface ApprovalRequest {\n  id: string;\n  /** What will happen, in plain words: \"Send email to 214 customers\". */\n  action: string;\n  /** Tool that will run, shown in mono. */\n  tool: string;\n  /** What the tool acts on, e.g. \"segment · churn-risk-q3\". */\n  target?: string;\n  risk: ApprovalRisk;\n  /** One line on why the risk level was chosen. */\n  riskReason?: string;\n  /** Arguments preview. Long values truncate and expand. */\n  params?: Record<string, string | number | boolean | null>;\n  /** Side effects, e.g. \"Will charge $49.00 to card •4242\". */\n  effects?: string[];\n}\n\nexport interface ApprovalDecision {\n  status: Exclude<ApprovalStatus, \"pending\">;\n  /** Optional reason the person gave when denying, or \"Timed out\". */\n  reason?: string;\n  /** \"Always allow this tool for the session\" was ticked. */\n  alwaysAllow: boolean;\n  /** Epoch ms of the decision. */\n  at: number;\n}\n\nexport interface ApprovalGateProps {\n  request: ApprovalRequest;\n  status?: ApprovalStatus;\n  defaultStatus?: ApprovalStatus;\n  /** Fires once per decision, with the reason and the session preference. */\n  onDecision?: (decision: ApprovalDecision) => void;\n  /** High risk only: Approve must be held for ~1.2s. Reduced motion uses a two-step confirm instead. */\n  requireHold?: boolean;\n  /** Auto-deny after this many ms. The countdown pauses while the gate is hovered or focused. */\n  timeoutMs?: number;\n  /** Move focus into the gate on mount: the Approve button for low and medium risk, the gate itself for high. */\n  autoFocus?: boolean;\n  /** Demo/preview only: a fixed clock for the receipt time. */\n  now?: number;\n  /** Demo/preview only: freeze the hold fill (0 to 1) and the timeout hairline (0 to 1 remaining). */\n  pose?: { hold?: number; remaining?: number };\n  tone?: BjorkTone;\n  className?: string;\n}\n\nexport const SAMPLE_APPROVAL_REQUESTS: ApprovalRequest[] = [\n  {\n    id: \"req_bulk_email\",\n    action: \"Send email to 214 customers\",\n    tool: \"send_bulk_email\",\n    target: \"segment · churn-risk-q3\",\n    risk: \"high\",\n    riskReason: \"Irreversible. Sent emails cannot be recalled.\",\n    params: {\n      from: \"ada@fieldnotes.dev\",\n      subject: \"A note about your Studio plan\",\n      body:\n        \"Hi {{first_name}}, we noticed you haven't opened Fieldnotes in a while. We've moved your workspace to the new editor and kept every draft exactly where you left it. If anything feels off, reply to this email and a person will answer.\",\n      track_opens: true,\n    },\n    effects: [\"Will email 214 recipients from ada@fieldnotes.dev\", \"Will log a campaign in Halcyon CRM\"],\n  },\n  {\n    id: \"req_charge\",\n    action: \"Charge Maren Osei for the annual upgrade\",\n    tool: \"create_charge\",\n    target: \"cus_8Hq2Lm\",\n    risk: \"medium\",\n    riskReason: \"Moves money. Refundable within 30 days.\",\n    params: { amount: \"49.00\", currency: \"USD\", description: \"Studio annual upgrade (prorated)\" },\n    effects: [\"Will charge $49.00 to card •4242\"],\n  },\n  {\n    id: \"req_read\",\n    action: \"Read the Q3 retention sheet\",\n    tool: \"read_file\",\n    target: \"drive://growth/q3-retention.csv\",\n    risk: \"low\",\n    riskReason: \"Read-only. Nothing is changed.\",\n    params: { path: \"growth/q3-retention.csv\", max_rows: 500 },\n  },\n];\n\nconst HOLD_MS = 1200;\nconst DRAIN_SPEED = 3; // a released hold drains three times faster than it fills\nconst TWO_STEP_MS = 3000;\nconst WARN_MS = 10_000;\nconst LONG_VALUE = 56;\n\nconst RISK: Record<ApprovalRisk, { label: string; color: string }> = {\n  low: { label: \"Low risk\", color: \"var(--bjork-text-muted)\" },\n  medium: { label: \"Medium risk\", color: \"var(--bjork-warning)\" },\n  high: { label: \"High risk\", color: \"var(--bjork-error)\" },\n};\n\nfunction clockTime(at: number): string {\n  return new Date(at).toLocaleTimeString(\"en-US\", { hour: \"numeric\", minute: \"2-digit\" });\n}\n\nconst BTN =\n  \"relative inline-flex h-8 min-w-[76px] cursor-pointer select-none items-center justify-center overflow-hidden rounded-[9px] px-3 text-[13px] font-medium leading-5 transition-[background-color,color,border-color] duration-150\";\nconst BTN_QUIET =\n  \"border border-[color:var(--bjork-border)] text-[color:var(--bjork-text-medium)] hover:border-[color:var(--bjork-border-strong)] hover:bg-[color:var(--bjork-surface-active)] hover:text-[color:var(--bjork-text)]\";\n\n/** Human-in-the-loop confirmation for a tool call: what, where, how risky, then Approve or Deny. */\nexport function ApprovalGate({\n  request,\n  status,\n  defaultStatus = \"pending\",\n  onDecision,\n  requireHold = false,\n  timeoutMs,\n  autoFocus = false,\n  now,\n  pose,\n  tone: toneProp,\n  className,\n}: ApprovalGateProps) {\n  const { style } = useAiTone(toneProp);\n  const reduce = useReduceMotion();\n  const titleId = useId();\n  const descId = useId();\n  const reasonId = useId();\n  const holdHintId = useId();\n  const [current, setStatus] = useControllable<ApprovalStatus>(status, defaultStatus, undefined);\n  const [record, setRecord] = useState<ApprovalDecision | null>(null);\n  const [always, setAlways] = useState(false);\n  const [denying, setDenying] = useState(false);\n  const [reason, setReason] = useState(\"\");\n  const [armed, setArmed] = useState(false);\n  const [paused, setPaused] = useState(false);\n\n  const rootRef = useRef<HTMLElement>(null);\n  const approveRef = useRef<HTMLButtonElement>(null);\n  const reasonRef = useRef<HTMLInputElement>(null);\n  const denyRef = useRef<HTMLButtonElement>(null);\n  const fillRef = useRef<HTMLSpanElement>(null);\n  const holdLabelRef = useRef<HTMLSpanElement>(null);\n  const receiptRef = useRef<HTMLDivElement>(null);\n  const hairRef = useRef<HTMLSpanElement>(null);\n  const countRef = useRef<HTMLSpanElement>(null);\n\n  const holdMode = requireHold && request.risk === \"high\";\n  const twoStep = holdMode && reduce;\n  const pending = current === \"pending\";\n  const posed = pose !== undefined;\n  const risk = RISK[request.risk];\n\n  const decide = useCallback(\n    (next: ApprovalDecision[\"status\"], why?: string) => {\n      const decision: ApprovalDecision = {\n        status: next,\n        reason: why?.trim() || undefined,\n        alwaysAllow: next === \"approved\" && always,\n        at: now ?? Date.now(),\n      };\n      // Focus follows the decision to the receipt, so it is not lost on a control that just went inert.\n      const hadFocus = rootRef.current?.contains(document.activeElement) ?? false;\n      setRecord(decision);\n      setStatus(next);\n      if (hadFocus) requestAnimationFrame(() => receiptRef.current?.focus());\n      setDenying(false);\n      onDecision?.(decision);\n    },\n    [always, now, onDecision, setStatus],\n  );\n  const decideRef = useRef(decide);\n  useLayoutEffect(() => {\n    decideRef.current = decide;\n  });\n\n  // Announce the outcome, derived during render.\n  const [announce, setAnnounce] = useState({ status: current, message: \"\" });\n  if (announce.status !== current) {\n    setAnnounce({\n      status: current,\n      message:\n        current === \"approved\"\n          ? `Approved: ${request.action}`\n          : current === \"denied\"\n            ? `Denied: ${request.action}`\n            : `Approval needed: ${request.action}`,\n    });\n  }\n\n  useEffect(() => {\n    if (!autoFocus) return;\n    if (request.risk === \"high\") rootRef.current?.focus();\n    else approveRef.current?.focus();\n  }, [autoFocus, request.id, request.risk]);\n\n  useEffect(() => {\n    if (denying) reasonRef.current?.focus();\n  }, [denying]);\n\n  // Two-step confirm disarms itself.\n  useEffect(() => {\n    if (!armed) return;\n    const id = window.setTimeout(() => setArmed(false), TWO_STEP_MS);\n    return () => window.clearTimeout(id);\n  }, [armed]);\n\n  // ----- Timeout. The hairline and seconds are written to the DOM; React renders only on pause and expiry.\n  const pausedRef = useRef(paused);\n  useLayoutEffect(() => {\n    pausedRef.current = paused || denying;\n  });\n  useEffect(() => {\n    if (!pending || timeoutMs === undefined || posed) return;\n    let left = timeoutMs;\n    let last = performance.now();\n    let raf = 0;\n    const paint = () => {\n      const f = Math.max(0, left / timeoutMs);\n      if (hairRef.current) {\n        hairRef.current.style.transform = `scaleX(${f})`;\n        hairRef.current.style.background = left < WARN_MS ? \"var(--bjork-warning)\" : \"var(--bjork-text-soft)\";\n      }\n      if (countRef.current) countRef.current.textContent = `${Math.ceil(left / 1000)}s`;\n    };\n    const loop = (t: number) => {\n      const dt = t - last;\n      last = t;\n      if (!pausedRef.current) left -= dt;\n      paint();\n      if (left <= 0) {\n        decideRef.current(\"denied\", \"Timed out\");\n        return;\n      }\n      raf = requestAnimationFrame(loop);\n    };\n    paint();\n    raf = requestAnimationFrame(loop);\n    return () => cancelAnimationFrame(raf);\n  }, [pending, timeoutMs, posed]);\n\n  // ----- Press and hold.\n  const hold = useRef({ p: 0, dir: 0, raf: 0, last: 0 });\n  const paintFill = (p: number) => {\n    if (fillRef.current) fillRef.current.style.transform = `scaleX(${p})`;\n    if (holdLabelRef.current) holdLabelRef.current.style.clipPath = `inset(0 ${100 - p * 100}% 0 0)`;\n  };\n  const step = (t: number) => {\n    const h = hold.current;\n    const dt = t - h.last;\n    h.last = t;\n    h.p = Math.min(1, Math.max(0, h.p + (h.dir * dt * (h.dir < 0 ? DRAIN_SPEED : 1)) / HOLD_MS));\n    paintFill(h.p);\n    if (h.p >= 1) {\n      h.dir = 0;\n      h.raf = 0;\n      decideRef.current(\"approved\");\n      return;\n    }\n    if (h.p <= 0 && h.dir < 0) {\n      h.dir = 0;\n      h.raf = 0;\n      return;\n    }\n    h.raf = requestAnimationFrame(step);\n  };\n  const startHold = () => {\n    const h = hold.current;\n    h.dir = 1;\n    if (!h.raf) {\n      h.last = performance.now();\n      h.raf = requestAnimationFrame(step);\n    }\n  };\n  const releaseHold = () => {\n    const h = hold.current;\n    if (h.dir === 0) return;\n    h.dir = -1;\n    if (!h.raf) {\n      h.last = performance.now();\n      h.raf = requestAnimationFrame(step);\n    }\n  };\n  useEffect(() => {\n    const h = hold.current;\n    return () => cancelAnimationFrame(h.raf);\n  }, []);\n\n  const onApproveClick = (e: ReactMouseEvent<HTMLButtonElement>) => {\n    if (!holdMode) return decide(\"approved\");\n    // Reduced motion, or an assistive-tech click with no pointer: confirm in two steps instead of holding.\n    if (twoStep || e.detail === 0) {\n      if (armed) decide(\"approved\");\n      else setArmed(true);\n    }\n  };\n  const onApproveKeyDown = (e: ReactKeyboardEvent<HTMLButtonElement>) => {\n    if (!holdMode || twoStep || (e.key !== \" \" && e.key !== \"Enter\")) return;\n    e.preventDefault();\n    if (!e.repeat) startHold();\n  };\n  const onApproveKeyUp = (e: ReactKeyboardEvent<HTMLButtonElement>) => {\n    if (!holdMode || twoStep || (e.key !== \" \" && e.key !== \"Enter\")) return;\n    e.preventDefault();\n    releaseHold();\n  };\n\n  const submitDeny = () => decide(\"denied\", reason);\n\n  const approveLabel = holdMode\n    ? twoStep || armed\n      ? armed\n        ? \"Confirm approve\"\n        : \"Approve\"\n      : \"Hold to approve\"\n    : \"Approve\";\n\n  const params = Object.entries(request.params ?? {});\n\n  return (\n    <section\n      ref={rootRef}\n      tabIndex={-1}\n      aria-labelledby={titleId}\n      aria-describedby={descId}\n      style={style}\n      onPointerEnter={() => setPaused(true)}\n      onPointerLeave={() => setPaused(false)}\n      onFocus={() => setPaused(true)}\n      onBlur={(e) => {\n        if (!e.currentTarget.contains(e.relatedTarget as Node | null)) setPaused(false);\n      }}\n      className={cn(\n        \"@container relative w-full max-w-[560px] font-bjork-alpha text-[color:var(--bjork-text)]\",\n        FOCUS_RING,\n        \"rounded-[12px]\",\n        className,\n      )}\n    >\n      {/* Pending card */}\n      <div\n        className=\"grid\"\n        aria-hidden={!pending || undefined}\n        inert={!pending}\n        style={{\n          gridTemplateRows: pending ? \"1fr\" : \"0fr\",\n          opacity: pending ? 1 : 0,\n          transition: reduce ? \"none\" : `grid-template-rows 280ms ${easeCss.drawer}, opacity 200ms ${easeCss.drawer}`,\n        }}\n      >\n        <div className=\"min-h-0 overflow-hidden\">\n          <div className={cn(AI_CARD, \"relative overflow-hidden px-4 pb-3.5 pt-3\")}>\n            <div className=\"flex min-h-6 items-center justify-between gap-3\">\n              <span className=\"font-mono text-[10px] uppercase leading-4 tracking-[0.08em] text-[color:var(--bjork-text-faint)]\">\n                Approval needed\n              </span>\n              <span className=\"flex shrink-0 items-center gap-2.5\">\n                {timeoutMs !== undefined && (\n                  <span className=\"whitespace-nowrap font-mono text-[11px] leading-4 tabular-nums text-[color:var(--bjork-text-faint)]\">\n                    {paused || denying ? (\n                      \"Paused\"\n                    ) : (\n                      <>\n                        Auto-deny{\" \"}\n                        <span ref={countRef} className=\"inline-block min-w-[3ch] text-right\">\n                          {posed ? `${Math.ceil(((pose?.remaining ?? 1) * timeoutMs) / 1000)}s` : \"\"}\n                        </span>\n                      </>\n                    )}\n                  </span>\n                )}\n                <span\n                  className=\"inline-flex h-5 items-center rounded-[5px] border px-1.5 font-mono text-[10px] uppercase leading-none tracking-[0.08em]\"\n                  style={{\n                    color: risk.color,\n                    borderColor: `color-mix(in srgb, ${risk.color} 34%, transparent)`,\n                    background: `color-mix(in srgb, ${risk.color} 8%, transparent)`,\n                  }}\n                >\n                  {risk.label}\n                </span>\n              </span>\n            </div>\n\n            <h3 id={titleId} className=\"mt-2 text-[15px] font-semibold leading-[22px] text-balance\">\n              {request.action}\n            </h3>\n            <p className=\"mt-0.5 flex min-w-0 flex-wrap items-baseline gap-x-2 text-[12px] leading-5\">\n              <span className=\"font-mono text-[color:var(--bjork-text-medium)]\">{request.tool}</span>\n              {request.target && (\n                <span className=\"min-w-0 truncate text-[color:var(--bjork-text-muted)]\">→ {request.target}</span>\n              )}\n            </p>\n            <p id={descId} className=\"mt-1.5 flex items-start gap-2 text-[12px] leading-[18px] text-[color:var(--bjork-text-soft)]\">\n              <span aria-hidden=\"true\" className=\"mt-[6px] size-1.5 shrink-0 rounded-full\" style={{ background: risk.color }} />\n              <span>\n                <span className=\"sr-only\">{risk.label}. </span>\n                {request.riskReason ?? risk.label}\n              </span>\n            </p>\n\n            {params.length > 0 && (\n              <dl className={cn(AI_WELL, \"mt-3 overflow-hidden py-1\")}>\n                {params.map(([key, value]) => (\n                  <Param key={key} name={key} value={value} />\n                ))}\n              </dl>\n            )}\n\n            {request.effects && request.effects.length > 0 && (\n              <ul className=\"mt-3 flex flex-col gap-1\" aria-label=\"Effects\">\n                {request.effects.map((effect) => (\n                  <li key={effect} className=\"flex items-start gap-2 text-[13px] leading-5 text-[color:var(--bjork-text-medium)]\">\n                    <span aria-hidden=\"true\" className=\"mt-[3px] grid size-3.5 shrink-0 place-items-center\">\n                      <StrokeMorphIcon name=\"arrow-right\" size={12} strokeWidth={1.75} color=\"var(--bjork-text-faint)\" />\n                    </span>\n                    {effect}\n                  </li>\n                ))}\n              </ul>\n            )}\n\n            {/* Deny reason */}\n            <div\n              className=\"grid\"\n              inert={!denying}\n              style={{\n                gridTemplateRows: denying ? \"1fr\" : \"0fr\",\n                opacity: denying ? 1 : 0,\n                transition: reduce ? \"none\" : `grid-template-rows 240ms ${easeCss.drawer}, opacity 240ms ${easeCss.drawer}`,\n              }}\n            >\n              {/* Negative margin plus padding leaves room for the input's focus ring inside the clip. */}\n              <div className=\"-mx-1 -mb-1 min-h-0 overflow-hidden px-1 pb-1\">\n                <div className=\"flex flex-col gap-1.5 pt-3\">\n                  <label htmlFor={reasonId} className=\"text-[12px] leading-4 text-[color:var(--bjork-text-muted)]\">\n                    Reason <span className=\"text-[color:var(--bjork-text-faint)]\">(optional, sent to the assistant)</span>\n                  </label>\n                  <input\n                    id={reasonId}\n                    ref={reasonRef}\n                    value={reason}\n                    onChange={(e) => setReason(e.target.value)}\n                    onKeyDown={(e) => {\n                      if (e.key === \"Enter\") {\n                        e.preventDefault();\n                        submitDeny();\n                      } else if (e.key === \"Escape\") {\n                        e.preventDefault();\n                        setDenying(false);\n                        denyRef.current?.focus();\n                      }\n                    }}\n                    placeholder=\"Wrong segment, use churn-risk-q4\"\n                    className={cn(\n                      \"h-8 w-full min-w-0 rounded-[8px] border border-[color:var(--bjork-border)] bg-[color:var(--bjork-field)] px-2.5 text-[13px] text-[color:var(--bjork-text)] placeholder:text-[color:var(--bjork-text-faint)]\",\n                      FOCUS_RING,\n                    )}\n                  />\n                </div>\n              </div>\n            </div>\n\n            <div className=\"mt-3.5 flex flex-col gap-3 @[440px]:flex-row @[440px]:items-center @[440px]:justify-between\">\n              <label className=\"flex min-h-7 cursor-pointer items-center gap-2 text-[12px] leading-4 text-[color:var(--bjork-text-muted)]\">\n                <input\n                  type=\"checkbox\"\n                  checked={always}\n                  onChange={(e) => setAlways(e.target.checked)}\n                  className={cn(\n                    \"size-3.5 shrink-0 cursor-pointer rounded-[4px] accent-[color:var(--bjork-accent)]\",\n                    FOCUS_RING,\n                  )}\n                />\n                <span>\n                  Always allow <span className=\"font-mono text-[11px]\">{request.tool}</span> this session\n                </span>\n              </label>\n              <div className=\"flex shrink-0 items-center justify-end gap-2\">\n                {denying ? (\n                  <>\n                    <button\n                      type=\"button\"\n                      onClick={() => {\n                        setDenying(false);\n                        denyRef.current?.focus();\n                      }}\n                      className={cn(BTN, BTN_QUIET, \"min-w-0 border-transparent\", FOCUS_RING, PRESS)}\n                    >\n                      Back\n                    </button>\n                    <button\n                      type=\"button\"\n                      onClick={submitDeny}\n                      className={cn(\n                        BTN,\n                        \"border border-[color:color-mix(in_srgb,var(--bjork-error)_40%,transparent)] text-[color:var(--bjork-error)] hover:bg-[color:color-mix(in_srgb,var(--bjork-error)_8%,transparent)]\",\n                        FOCUS_RING,\n                        PRESS,\n                      )}\n                    >\n                      Deny\n                    </button>\n                  </>\n                ) : (\n                  <button\n                    ref={denyRef}\n                    type=\"button\"\n                    onClick={() => {\n                      setArmed(false);\n                      setDenying(true);\n                    }}\n                    className={cn(BTN, BTN_QUIET, FOCUS_RING, PRESS)}\n                  >\n                    Deny…\n                  </button>\n                )}\n                <button\n                  ref={approveRef}\n                  type=\"button\"\n                  aria-describedby={holdMode ? holdHintId : undefined}\n                  onClick={onApproveClick}\n                  onPointerDown={(e) => {\n                    if (!holdMode || twoStep || e.button !== 0) return;\n                    e.currentTarget.setPointerCapture(e.pointerId);\n                    startHold();\n                  }}\n                  onPointerUp={releaseHold}\n                  onPointerCancel={releaseHold}\n                  onLostPointerCapture={releaseHold}\n                  onKeyDown={onApproveKeyDown}\n                  onKeyUp={onApproveKeyUp}\n                  onBlur={releaseHold}\n                  onContextMenu={(e) => holdMode && e.preventDefault()}\n                  className={cn(\n                    BTN,\n                    \"min-w-[132px] touch-none bg-[color:var(--bjork-accent-fill)] text-[color:var(--bjork-accent-foreground)] hover:brightness-110\",\n                    holdMode && !twoStep && \"bg-[color:var(--bjork-accent-soft)] text-[color:var(--bjork-accent-ink)] ring-1 ring-inset ring-[color:var(--bjork-accent-muted)] hover:brightness-100\",\n                    armed && \"bg-[color:var(--bjork-accent-fill)] text-[color:var(--bjork-accent-foreground)]\",\n                    FOCUS_RING,\n                    !holdMode && PRESS,\n                  )}\n                >\n                  <span className=\"relative\">{approveLabel}</span>\n                  {holdMode && !twoStep && (\n                    <span\n                      ref={fillRef}\n                      aria-hidden=\"true\"\n                      className=\"absolute inset-0 origin-left bg-[color:var(--bjork-accent-fill)]\"\n                      style={{ transform: `scaleX(${pose?.hold ?? 0})` }}\n                    />\n                  )}\n                  {holdMode && !twoStep && (\n                    // The label is drawn twice: ink on the empty track, and foreground clipped to the fill.\n                    <span\n                      ref={holdLabelRef}\n                      aria-hidden=\"true\"\n                      className=\"pointer-events-none absolute inset-0 grid place-items-center text-[color:var(--bjork-accent-foreground)]\"\n                      style={{ clipPath: `inset(0 ${100 - (pose?.hold ?? 0) * 100}% 0 0)` }}\n                    >\n                      {approveLabel}\n                    </span>\n                  )}\n                </button>\n              </div>\n            </div>\n            {holdMode && (\n              <span id={holdHintId} className=\"sr-only\">\n                {twoStep ? \"Press twice to confirm.\" : \"Press and hold for about one second.\"}\n              </span>\n            )}\n\n            {timeoutMs !== undefined && (\n              <span\n                ref={hairRef}\n                aria-hidden=\"true\"\n                className=\"absolute inset-x-0 bottom-0 h-px origin-left\"\n                style={{\n                  transform: `scaleX(${posed ? (pose?.remaining ?? 1) : 1})`,\n                  background: \"var(--bjork-text-soft)\",\n                }}\n              />\n            )}\n          </div>\n        </div>\n      </div>\n\n      {/* Receipt */}\n      <div\n        className=\"grid\"\n        aria-hidden={pending || undefined}\n        style={{\n          gridTemplateRows: pending ? \"0fr\" : \"1fr\",\n          opacity: pending ? 0 : 1,\n          transition: reduce ? \"none\" : `grid-template-rows 280ms ${easeCss.drawer}, opacity 280ms ${easeCss.drawer} 80ms`,\n        }}\n      >\n        <div className=\"min-h-0 overflow-hidden\">\n          <div ref={receiptRef} tabIndex={-1} className=\"outline-none\">\n            <Receipt request={request} status={current} record={record} />\n          </div>\n        </div>\n      </div>\n\n      <LiveRegion message={announce.message} />\n    </section>\n  );\n}\n\nfunction Receipt({\n  request,\n  status,\n  record,\n}: {\n  request: ApprovalRequest;\n  status: ApprovalStatus;\n  record: ApprovalDecision | null;\n}) {\n  if (status === \"pending\") return <div className=\"h-9\" />;\n  const approved = status === \"approved\";\n  const reason = record?.reason;\n  return (\n    <div className=\"flex min-h-9 min-w-0 items-center gap-2.5 py-2\">\n      <span aria-hidden=\"true\" className=\"grid size-5 shrink-0 place-items-center\">\n        <StrokeMorphIcon\n          name={approved ? \"check\" : \"close\"}\n          size={16}\n          strokeWidth={1.75}\n          color={approved ? \"var(--bjork-success)\" : \"var(--bjork-text-muted)\"}\n        />\n      </span>\n      <span className=\"flex min-w-0 flex-1 items-baseline gap-2 text-[13px] leading-5\">\n        <span className=\"shrink-0 font-medium text-[color:var(--bjork-text)]\">\n          {approved ? \"Approved\" : \"Denied\"}\n          {record && !reason && (\n            <span className=\"font-mono text-[11px] font-normal tabular-nums text-[color:var(--bjork-text-faint)]\">\n              {\" \"}\n              · {clockTime(record.at)}\n            </span>\n          )}\n          {reason && <span className=\"font-normal text-[color:var(--bjork-text-muted)]\"> — {reason}</span>}\n        </span>\n        <span className=\"min-w-0 truncate text-[color:var(--bjork-text-faint)]\">{request.action}</span>\n      </span>\n      {record?.alwaysAllow && (\n        <span className=\"hidden shrink-0 font-mono text-[10px] uppercase tracking-[0.08em] text-[color:var(--bjork-text-faint)] @[420px]:inline\">\n          Always allowed\n        </span>\n      )}\n    </div>\n  );\n}\n\nfunction Param({ name, value }: { name: string; value: string | number | boolean | null }) {\n  const [open, setOpen] = useState(false);\n  const text = value === null ? \"null\" : String(value);\n  const long = text.length > LONG_VALUE || text.includes(\"\\n\");\n  const literal = typeof value !== \"string\";\n  return (\n    <div className=\"grid grid-cols-[minmax(64px,auto)_1fr] items-baseline gap-x-3 px-3 py-1 @[440px]:grid-cols-[112px_1fr]\">\n      <dt className=\"truncate font-mono text-[11px] leading-5 text-[color:var(--bjork-text-faint)]\">{name}</dt>\n      <dd className=\"flex min-w-0 items-baseline gap-2\">\n        <span\n          className={cn(\n            \"min-w-0 font-mono text-[12px] leading-5\",\n            literal ? \"text-[color:var(--bjork-accent-ink)]\" : \"text-[color:var(--bjork-text-medium)]\",\n            open ? \"whitespace-pre-wrap break-words\" : \"truncate\",\n          )}\n        >\n          {text}\n        </span>\n        {long && (\n          <button\n            type=\"button\"\n            aria-expanded={open}\n            aria-label={`${open ? \"Collapse\" : \"Show full\"} ${name}`}\n            onClick={() => setOpen((v) => !v)}\n            className={cn(\n              \"-my-1 inline-flex h-7 shrink-0 cursor-pointer items-center self-start rounded-[6px] px-1.5 font-mono text-[11px] text-[color:var(--bjork-text-muted)] hover:text-[color:var(--bjork-text)]\",\n              FOCUS_RING,\n            )}\n          >\n            {open ? \"less\" : \"more\"}\n          </button>\n        )}\n      </dd>\n    </div>\n  );\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/ai/approval-gate.tsx"
    },
    {
      "path": "components/bjork-ui/_core/a11y.tsx",
      "content": "import type { ReactNode } from \"react\";\n\n// Text for assistive tech only.\nexport function VisuallyHidden({ children }: { children: ReactNode }) {\n  return <span className=\"sr-only\">{children}</span>;\n}\n\n// Announces `message` when it changes. Same text re-rendered does not re-announce.\nexport function LiveRegion({\n  message,\n  politeness = \"polite\",\n}: {\n  message: string;\n  politeness?: \"polite\" | \"assertive\";\n}) {\n  return (\n    <span role=\"status\" aria-live={politeness} aria-atomic=\"true\" className=\"sr-only\">\n      {message}\n    </span>\n  );\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/_core/a11y.tsx"
    },
    {
      "path": "components/bjork-ui/_core/motion.ts",
      "content": "// Shared springs, easings and durations. Components import these instead of inventing values.\n\nexport const springs = {\n  press: { type: \"spring\", stiffness: 500, damping: 30, mass: 0.6 },\n  snappy: { type: \"spring\", stiffness: 400, damping: 25, mass: 1 },\n  standard: { type: \"spring\", stiffness: 300, damping: 30, mass: 0.8 },\n  soft: { type: \"spring\", stiffness: 200, damping: 25, mass: 1.2 },\n  settle: { type: \"spring\", stiffness: 380, damping: 30, mass: 0.8 },\n  blurIn: { type: \"spring\", stiffness: 400, damping: 28, mass: 0.6 },\n} as const;\n\nexport const ease = {\n  out: [0.23, 1, 0.32, 1],\n  inOut: [0.77, 0, 0.175, 1],\n  drawer: [0.32, 0.72, 0, 1],\n} as const;\n\nexport const easeCss = {\n  out: \"cubic-bezier(0.23,1,0.32,1)\",\n  inOut: \"cubic-bezier(0.77,0,0.175,1)\",\n  drawer: \"cubic-bezier(0.32,0.72,0,1)\",\n} as const;\n\nexport const durations = { press: 140, tooltip: 160, menu: 200, panel: 280 } as const; // ms\n\n// Cubic bezier easing for canvas and rAF code. Returns progress y for input x in [0, 1].\nexport function cubicBezier(x1: number, y1: number, x2: number, y2: number): (t: number) => number {\n  const cx = 3 * x1;\n  const bx = 3 * (x2 - x1) - cx;\n  const ax = 1 - cx - bx;\n  const cy = 3 * y1;\n  const by = 3 * (y2 - y1) - cy;\n  const ay = 1 - cy - by;\n  const sampleX = (s: number) => ((ax * s + bx) * s + cx) * s;\n  const sampleY = (s: number) => ((ay * s + by) * s + cy) * s;\n  const sampleDX = (s: number) => (3 * ax * s + 2 * bx) * s + cx;\n\n  const solveX = (x: number) => {\n    let s = x;\n    for (let i = 0; i < 8; i++) {\n      const err = sampleX(s) - x;\n      if (Math.abs(err) < 1e-6) return s;\n      const d = sampleDX(s);\n      if (Math.abs(d) < 1e-6) break;\n      s -= err / d;\n    }\n    let lo = 0;\n    let hi = 1;\n    s = x;\n    while (lo < hi) {\n      const v = sampleX(s);\n      if (Math.abs(v - x) < 1e-6) return s;\n      if (x > v) lo = s;\n      else hi = s;\n      s = (lo + hi) / 2;\n      if (hi - lo < 1e-7) break;\n    }\n    return s;\n  };\n\n  return (t: number) => {\n    if (t <= 0) return 0;\n    if (t >= 1) return 1;\n    return sampleY(solveX(t));\n  };\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/_core/motion.ts"
    },
    {
      "path": "components/bjork-ui/ai/_shared.ts",
      "content": "\"use client\";\n\n// Shared plumbing for the bjork-ui AI components: tone tokens, reduced motion, controllable state and\n// number formatting. Every AI component imports from here so they read as one family.\n\nimport {\n  useCallback,\n  useLayoutEffect,\n  useRef,\n  useState,\n  useSyncExternalStore,\n  type CSSProperties,\n} from \"react\";\nimport { useReducedMotion } from \"framer-motion\";\nimport { BJORK_PALETTE, type BjorkTone } from \"@/components/bjork-ui/_core/palette\";\nimport { useBjorkTone } from \"@/components/bjork-ui/_core/tone\";\nimport { surfaceVars } from \"@/components/bjork-ui/_core/surface\";\n\nexport type { BjorkTone };\nexport type BjorkPalette = (typeof BJORK_PALETTE)[BjorkTone];\n\nconst noopSubscribe = () => () => {};\n\n/** False on the server and the first client render, true after hydration. */\nexport function useHydrated(): boolean {\n  return useSyncExternalStore(\n    noopSubscribe,\n    () => true,\n    () => false,\n  );\n}\n\n/** Hydration-safe reduced motion: both sides report \"not reduced\" until mount, then the real value applies. */\nexport function useReduceMotion(): boolean {\n  const hydrated = useHydrated();\n  const reduced = useReducedMotion();\n  return hydrated && reduced === true;\n}\n\n/**\n * Resolves the tone and returns the CSS custom properties for it. Spread `style` on the component root so an\n * explicit `tone` prop wins over the page theme, and status colours (success, warning, error) are always defined.\n */\nexport function useAiTone(toneProp?: BjorkTone) {\n  const tone = useBjorkTone(toneProp);\n  const pal = BJORK_PALETTE[tone];\n  const style = {\n    ...surfaceVars(tone),\n    \"--bjork-text\": pal.text,\n    \"--bjork-text-medium\": pal.textMedium,\n    \"--bjork-text-muted\": pal.textMuted,\n    \"--bjork-text-soft\": pal.textSoft,\n    \"--bjork-text-faint\": pal.textFaint,\n    \"--bjork-hair\": pal.hair,\n    \"--bjork-border\": pal.border,\n    \"--bjork-border-strong\": pal.borderStrong,\n    \"--bjork-surface\": pal.surface,\n    \"--bjork-raised\": pal.raised,\n    \"--bjork-surface-active\": pal.active,\n    \"--bjork-accent\": pal.accent,\n    \"--bjork-accent-ink\": pal.accentInk,\n    \"--bjork-accent-fill\": pal.accentFill,\n    \"--bjork-accent-soft\": pal.accentSoft,\n    \"--bjork-accent-muted\": pal.accentMuted,\n    \"--bjork-accent-foreground\": pal.accentFg,\n    \"--bjork-success\": pal.success,\n    \"--bjork-warning\": pal.warning,\n    \"--bjork-error\": pal.error,\n    \"--bjork-ring-offset\": pal.bg,\n    colorScheme: tone,\n  } as CSSProperties;\n  return { tone, pal, style };\n}\n\n/** Classes for the shared keyboard focus ring. */\nexport const FOCUS_RING =\n  \"outline-none focus-visible:ring-2 focus-visible:ring-[color:var(--bjork-accent)] focus-visible:ring-offset-2 focus-visible:ring-offset-[color:var(--bjork-ring-offset)]\";\n\n/** Classes for the shared press feedback. */\nexport const PRESS = \"transition-transform duration-150 ease-out active:scale-[0.97] motion-reduce:transition-none\";\n\n/**\n * Controlled-or-uncontrolled state. Pass `value` to control it; `onChange` fires for every change either way.\n */\nexport function useControllable<T>(\n  value: T | undefined,\n  defaultValue: T,\n  onChange?: (next: T) => void,\n): [T, (next: T) => void] {\n  const controlled = value !== undefined;\n  const [inner, setInner] = useState(defaultValue);\n  const current = controlled ? value : inner;\n  const onChangeRef = useRef(onChange);\n  useLayoutEffect(() => {\n    onChangeRef.current = onChange;\n  });\n  const set = useCallback(\n    (next: T) => {\n      if (!controlled) setInner(next);\n      onChangeRef.current?.(next);\n    },\n    [controlled],\n  );\n  return [current, set];\n}\n\n/** 1234 -> \"1,234\", 18400 -> \"18.4k\", 1_200_000 -> \"1.2M\". */\nexport function formatTokens(n: number): string {\n  if (n < 10_000) return Math.round(n).toLocaleString(\"en-US\");\n  if (n < 1_000_000) return `${(n / 1000).toFixed(n < 100_000 ? 1 : 0).replace(/\\.0$/, \"\")}k`;\n  return `${(n / 1_000_000).toFixed(n < 10_000_000 ? 2 : 1).replace(/\\.?0+$/, \"\")}M`;\n}\n\n/** US dollars with sub-cent precision when it matters: 0.0042 -> \"$0.0042\", 12.5 -> \"$12.50\". */\nexport function formatCost(usd: number): string {\n  if (usd === 0) return \"$0.00\";\n  if (Math.abs(usd) < 0.01) return `$${usd.toFixed(4)}`;\n  if (Math.abs(usd) < 1) return `$${usd.toFixed(3)}`;\n  return `$${usd.toLocaleString(\"en-US\", { minimumFractionDigits: 2, maximumFractionDigits: 2 })}`;\n}\n\n/** 640 -> \"640ms\", 4200 -> \"4.2s\", 95000 -> \"1m 35s\". */\nexport function formatDuration(ms: number): string {\n  if (ms < 1000) return `${Math.round(ms)}ms`;\n  if (ms < 60_000) return `${(ms / 1000).toFixed(1)}s`;\n  const m = Math.floor(ms / 60_000);\n  const s = Math.round((ms % 60_000) / 1000);\n  return `${m}m ${s}s`;\n}\n\n/** 2_400_000 bytes -> \"2.4 MB\". */\nexport function formatBytes(bytes: number): string {\n  if (bytes < 1024) return `${bytes} B`;\n  const units = [\"KB\", \"MB\", \"GB\"];\n  let v = bytes / 1024;\n  let i = 0;\n  while (v >= 1024 && i < units.length - 1) {\n    v /= 1024;\n    i++;\n  }\n  return `${v.toFixed(v < 10 ? 1 : 0)} ${units[i]}`;\n}\n\n/** Shimmer keyframes for \"working\" text. Mount once with <style href=... precedence=\"default\">. */\nexport const SHIMMER_TEXT_CSS =\n  \"@keyframes bjork-ai-shimmer{from{background-position:100% 0}to{background-position:0% 0}}\" +\n  \".bjork-ai-shimmer{background-image:linear-gradient(90deg,var(--bjork-text-muted) 0%,var(--bjork-text-muted) 40%,var(--bjork-text) 50%,var(--bjork-text-muted) 60%,var(--bjork-text-muted) 100%);background-size:300% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:bjork-ai-shimmer 1.8s linear infinite}\" +\n  \"@media (prefers-reduced-motion: reduce){.bjork-ai-shimmer{animation:none;background:none;color:var(--bjork-text-muted)}}\";\n\n/** CANON §2. Panel = a component's own root surface; Card = a standalone card; Tile = a card inside a panel; Well = recessed code/field. */\nexport const AI_PANEL = \"rounded-[20px] border border-[color:var(--bjork-border-muted)] bg-[color:var(--bjork-surface)] p-4 shadow-[var(--bjork-shadow-surface)]\";\nexport const AI_CARD = \"rounded-[18px] border border-[color:var(--bjork-border-muted)] bg-[color:var(--bjork-surface)] shadow-[var(--bjork-shadow-surface)]\";\nexport const AI_TILE = \"rounded-[12px] border border-[color:var(--bjork-border-muted)] bg-[color:var(--bjork-surface)] shadow-[var(--bjork-shadow-surface)]\";\nexport const AI_WELL = \"rounded-[8px] border border-[color:var(--bjork-border)] bg-[color:var(--bjork-field-inset)] shadow-[var(--bjork-shadow-inset)]\";\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/ai/_shared.ts"
    },
    {
      "path": "components/bjork-ui/_core/palette.ts",
      "content": "export type BjorkTone = \"dark\" | \"light\";\n\n// Canvas, WebGL and SVG attribute colours. DOM code uses the CSS tokens with these as fallbacks.\nexport const BJORK_PALETTE = {\n  dark: {\n    bg: \"#050505\", stage: \"#111111\", surface: \"#121212\", raised: \"#161616\", active: \"#202020\",\n    border: \"#232323\", borderStrong: \"#343434\",\n    text: \"#ededed\", textMedium: \"rgba(237,237,237,0.72)\", textMuted: \"rgba(237,237,237,0.6)\",\n    textSoft: \"rgba(237,237,237,0.5)\", textFaint: \"rgba(237,237,237,0.22)\", hair: \"rgba(237,237,237,0.12)\",\n    accent: \"#ec5c13\", accentInk: \"#ec5c13\", accentFill: \"#b84a12\", accentSoft: \"rgba(236,92,19,0.12)\", accentMuted: \"rgba(236,92,19,0.24)\",\n    accentFg: \"#fff2ea\", success: \"#4cc38a\", warning: \"#f2b544\", error: \"#ff5c4d\",\n  },\n  light: {\n    bg: \"#f7f5ef\", stage: \"#f7f5ef\", surface: \"#fffcf6\", raised: \"#f5efe3\", active: \"#efe7d8\",\n    border: \"#eee6db\", borderStrong: \"#e1d7c8\",\n    text: \"#171717\", textMedium: \"rgba(23,23,23,0.78)\", textMuted: \"rgba(23,23,23,0.68)\",\n    textSoft: \"rgba(23,23,23,0.62)\", textFaint: \"rgba(23,23,23,0.22)\", hair: \"rgba(23,23,23,0.10)\",\n    accent: \"#ec7d43\", accentInk: \"#b4531f\", accentFill: \"#ec7d43\", accentSoft: \"rgba(236,125,67,0.10)\", accentMuted: \"rgba(236,125,67,0.20)\",\n    accentFg: \"#3f2112\", success: \"#1f8a55\", warning: \"#a86b00\", error: \"#c8361f\",\n  },\n} as const;\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/_core/palette.ts"
    },
    {
      "path": "components/bjork-ui/_core/tone.ts",
      "content": "\"use client\";\n\nimport { useSyncExternalStore } from \"react\";\nimport { useTheme } from \"next-themes\";\nimport type { BjorkTone } from \"./palette\";\n\nconst subscribeNoop = () => () => {};\nconst getMounted = () => true;\nconst getServerMounted = () => false;\n\n/**\n * Resolves the tone for a component. An explicit `tone` always wins.\n * Otherwise it follows next-themes' resolved theme, but only after mount,\n * so the server render and first client render agree on dark.\n */\nexport function useBjorkTone(tone?: BjorkTone): BjorkTone {\n  const { resolvedTheme } = useTheme();\n  const mounted = useSyncExternalStore(subscribeNoop, getMounted, getServerMounted);\n  if (tone) return tone;\n  if (!mounted) return \"dark\";\n  return resolvedTheme === \"light\" ? \"light\" : \"dark\";\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/_core/tone.ts"
    },
    {
      "path": "components/bjork-ui/_core/surface.ts",
      "content": "import type { CSSProperties } from \"react\";\nimport type { BjorkTone } from \"./palette\";\n\n// The library surface (CANON.md §1). Values mirror app/globals.css :root and .dark. Change both together.\nexport const BJORK_SURFACE = {\n  light: {\n    surface: \"#fffcf6\", surfaceMuted: \"rgba(250, 246, 237, 0.94)\", surfaceHover: \"#f5efe3\", surfaceActive: \"#efe7d8\",\n    panel: \"#f8f2e7\", menu: \"rgba(255, 252, 246, 0.98)\", field: \"rgba(255, 252, 246, 0.96)\",\n    fieldMuted: \"rgba(248, 242, 231, 0.82)\", fieldInset: \"rgba(239, 231, 216, 0.72)\",\n    border: \"#eee6db\", borderMuted: \"#f5ede2\", borderStrong: \"#e1d7c8\",\n    shadowSurface: \"inset 0 7px 14px rgba(88, 72, 49, 0.045), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.92), inset 1px 0 0 rgba(88, 72, 49, 0.026), inset -1px 0 0 rgba(255, 255, 255, 0.68), 0 14px 22px -9px rgba(66, 52, 33, 0.11)\",\n    shadowSoft: \"inset 0 1px 0 rgba(88, 72, 49, 0.045), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.86)\",\n    shadowPanel: \"inset 0 1px 0 rgba(88, 72, 49, 0.04), inset 1px 0 0 rgba(88, 72, 49, 0.024), inset -1px 0 0 rgba(255, 255, 255, 0.64), 0 18px 38px -30px rgba(66, 52, 33, 0.2)\",\n    shadowMenu: \"inset 0 1px 0 rgba(88, 72, 49, 0.04), inset 0 12px 24px rgba(88, 72, 49, 0.022), inset 1px 0 0 rgba(88, 72, 49, 0.024), inset -1px 0 0 rgba(255, 255, 255, 0.62), 0 22px 44px -26px rgba(66, 52, 33, 0.22)\",\n    shadowInset: \"inset 0 1px 10px rgba(88, 72, 49, 0.12), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.72)\",\n  },\n  dark: {\n    surface: \"#121212\", surfaceMuted: \"rgba(22, 22, 22, 0.92)\", surfaceHover: \"#161616\", surfaceActive: \"#202020\",\n    panel: \"#0d0d0d\", menu: \"rgba(18, 18, 18, 0.98)\", field: \"rgba(18, 18, 18, 0.95)\",\n    fieldMuted: \"rgba(18, 18, 18, 0.55)\", fieldInset: \"rgba(9, 9, 9, 0.75)\",\n    border: \"#232323\", borderMuted: \"#1c1c1c\", borderStrong: \"#343434\",\n    shadowSurface: \"inset 0 7px 14px rgba(255, 255, 255, 0.03), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.06), 0 14px 20px -6px rgba(0, 0, 0, 0.45)\",\n    shadowSoft: \"inset 0 1px 0 rgba(255, 255, 255, 0.045)\",\n    shadowPanel: \"inset 0 1px 0 rgba(255, 255, 255, 0.035), 0 18px 36px -28px rgba(0, 0, 0, 0.9)\",\n    shadowMenu: \"inset 0 1px 0 rgba(255, 255, 255, 0.055), inset 0 12px 24px rgba(255, 255, 255, 0.018), inset 0 -18px 26px rgba(0, 0, 0, 0.24), 0 22px 42px -22px rgba(0, 0, 0, 0.9)\",\n    shadowInset: \"inset 0 1px 10px rgba(0, 0, 0, 0.45)\",\n  },\n} as const;\n\n/** Writes the surface tokens for a pinned tone as --bjork-* custom properties. Spread first; kit-specific keys may override. */\nexport function surfaceVars(tone: BjorkTone): CSSProperties {\n  const s = BJORK_SURFACE[tone];\n  return {\n    \"--bjork-surface\": s.surface, \"--bjork-surface-muted\": s.surfaceMuted, \"--bjork-surface-hover\": s.surfaceHover,\n    \"--bjork-surface-active\": s.surfaceActive, \"--bjork-panel\": s.panel, \"--bjork-menu\": s.menu, \"--bjork-field\": s.field,\n    \"--bjork-field-muted\": s.fieldMuted, \"--bjork-field-inset\": s.fieldInset, \"--bjork-border\": s.border,\n    \"--bjork-border-muted\": s.borderMuted, \"--bjork-border-strong\": s.borderStrong,\n    \"--bjork-shadow-surface\": s.shadowSurface, \"--bjork-shadow-soft\": s.shadowSoft, \"--bjork-shadow-panel\": s.shadowPanel,\n    \"--bjork-shadow-menu\": s.shadowMenu, \"--bjork-shadow-inset\": s.shadowInset,\n  } as CSSProperties;\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/_core/surface.ts"
    },
    {
      "path": "components/bjork-ui/utilities/stroke-morph-icon.tsx",
      "content": "\"use client\";\n\nimport { useLayoutEffect, useRef, useState, type RefObject } from \"react\";\nimport { useReducedMotion } from \"framer-motion\";\nimport { cn } from \"@/lib/utils\";\nimport { useVisibleLoop } from \"@/components/bjork-ui/_core/loop\";\nimport { stepSpring, type SpringState } from \"@/components/bjork-ui/_core/spring\";\nimport { easeCss } from \"@/components/bjork-ui/_core/motion\";\n\nexport type StrokeIconName =\n  | \"menu\"\n  | \"equal\"\n  | \"minus\"\n  | \"plus\"\n  | \"close\"\n  | \"chevron-down\"\n  | \"chevron-up\"\n  | \"chevron-right\"\n  | \"chevron-left\"\n  | \"arrow-right\"\n  | \"arrow-down\"\n  | \"arrow-left\"\n  | \"arrow-up\"\n  | \"check\"\n  | \"play\"\n  | \"pause\"\n  | \"dot\"\n  | \"ellipsis\"\n  | \"busy\"\n  | (string & {});\n\n// Three line segments in a 24 x 24 box. `hidden` lines render at opacity 0 and collapse\n// onto the centroid of the visible endpoints. `group` icons share geometry and only rotate.\nexport interface StrokeIconDef {\n  lines: [number, number, number, number][];\n  hidden?: [boolean, boolean, boolean];\n  group?: string;\n  rotation?: number;\n  spin?: boolean;\n  strokeScale?: number;\n}\n\nexport interface StrokeMorphIconProps {\n  name: StrokeIconName;\n  size?: number;\n  strokeWidth?: number;\n  color?: string;\n  spring?: { stiffness: number; damping: number; mass: number };\n  spin?: boolean;\n  label?: string;\n  className?: string;\n}\n\ntype Seg = [number, number, number, number];\n\nconst DEFAULT_SPRING = { stiffness: 380, damping: 30, mass: 0.7 };\nconst CROSS_LINES: StrokeIconDef[\"lines\"] = [\n  [12, 5, 12, 19],\n  [5, 12, 19, 12],\n  [12, 12, 12, 12],\n];\nconst CHEVRON_LINES: StrokeIconDef[\"lines\"] = [\n  [6, 9, 12, 15],\n  [12, 15, 18, 9],\n  [12, 15, 12, 15],\n];\nconst ARROW_LINES: StrokeIconDef[\"lines\"] = [\n  [5, 12, 19, 12],\n  [13, 6, 19, 12],\n  [13, 18, 19, 12],\n];\n\nexport const strokeIcons: Record<string, StrokeIconDef> = {\n  menu: {\n    lines: [\n      [4, 7, 20, 7],\n      [4, 12, 20, 12],\n      [4, 17, 20, 17],\n    ],\n  },\n  equal: {\n    lines: [\n      [5, 9, 19, 9],\n      [5, 15, 19, 15],\n      [12, 12, 12, 12],\n    ],\n    hidden: [false, false, true],\n  },\n  minus: {\n    lines: [\n      [5, 12, 19, 12],\n      [12, 12, 12, 12],\n      [12, 12, 12, 12],\n    ],\n    hidden: [false, true, true],\n  },\n  plus: { lines: CROSS_LINES, hidden: [false, false, true], group: \"cross\", rotation: 0 },\n  close: { lines: CROSS_LINES, hidden: [false, false, true], group: \"cross\", rotation: 45 },\n  \"chevron-down\": { lines: CHEVRON_LINES, hidden: [false, false, true], group: \"chevron\", rotation: 0 },\n  \"chevron-up\": { lines: CHEVRON_LINES, hidden: [false, false, true], group: \"chevron\", rotation: 180 },\n  \"chevron-right\": { lines: CHEVRON_LINES, hidden: [false, false, true], group: \"chevron\", rotation: -90 },\n  \"chevron-left\": { lines: CHEVRON_LINES, hidden: [false, false, true], group: \"chevron\", rotation: 90 },\n  \"arrow-right\": { lines: ARROW_LINES, group: \"arrow\", rotation: 0 },\n  \"arrow-down\": { lines: ARROW_LINES, group: \"arrow\", rotation: 90 },\n  \"arrow-left\": { lines: ARROW_LINES, group: \"arrow\", rotation: 180 },\n  \"arrow-up\": { lines: ARROW_LINES, group: \"arrow\", rotation: -90 },\n  check: {\n    lines: [\n      [5, 12.5, 10, 17.5],\n      [10, 17.5, 19, 7],\n      [10, 17.5, 10, 17.5],\n    ],\n    hidden: [false, false, true],\n  },\n  // The +0.75px optical x nudge is already in these coordinates (OPTICAL-ALIGNMENT R2).\n  play: {\n    lines: [\n      [8.75, 5, 8.75, 19],\n      [8.75, 5, 19.75, 12],\n      [8.75, 19, 19.75, 12],\n    ],\n  },\n  pause: {\n    lines: [\n      [9, 6, 9, 18],\n      [15, 6, 15, 18],\n      [12, 12, 12, 12],\n    ],\n    hidden: [false, false, true],\n  },\n  dot: {\n    lines: [\n      [12, 12, 12, 12],\n      [12, 12, 12, 12],\n      [12, 12, 12, 12],\n    ],\n    hidden: [false, true, true],\n    strokeScale: 1.6,\n  },\n  ellipsis: {\n    lines: [\n      [6, 12, 6, 12],\n      [12, 12, 12, 12],\n      [18, 12, 18, 12],\n    ],\n  },\n  busy: {\n    lines: [\n      [12, 12, 12, 5],\n      [12, 12, 18.06, 15.5],\n      [12, 12, 5.94, 15.5],\n    ],\n    group: \"busy\",\n    rotation: 0,\n    spin: true,\n  },\n};\n\n// Optical nudges, in the icon's own frame (the group rotation carries them with the icon).\n// Measured with the blur test (OPTICAL-ALIGNMENT R1 / checklist 1 and 4): arrows carry their\n// visual weight toward the head, so they move back toward the tail; the check's weight sits low.\nconst OPTICAL_NUDGE = new Map<StrokeIconDef, [number, number]>([\n  [strokeIcons[\"arrow-right\"], [-1.6, 0]], // arrow-right: weight +1.63 units right of centre\n  [strokeIcons[\"arrow-down\"], [-1.6, 0]],\n  [strokeIcons[\"arrow-left\"], [-1.6, 0]],\n  [strokeIcons[\"arrow-up\"], [-1.6, 0]],\n  [strokeIcons.check, [0, -0.9]], // check: weight +0.94 units below centre\n]);\n\nfunction nudgeOf(def: StrokeIconDef): [number, number] {\n  return OPTICAL_NUDGE.get(def) ?? [0, 0];\n}\n\nfunction isSeg(v: unknown): v is Seg {\n  return Array.isArray(v) && v.length === 4 && v.every((n) => typeof n === \"number\" && Number.isFinite(n));\n}\n\n// Registers a custom icon. Throws a TypeError unless it has exactly three finite line segments.\nexport function defineStrokeIcon(name: string, def: StrokeIconDef): void {\n  if (!name) throw new TypeError(\"defineStrokeIcon: name must be a non-empty string\");\n  if (!Array.isArray(def.lines) || def.lines.length !== 3 || !def.lines.every(isSeg)) {\n    throw new TypeError(`defineStrokeIcon(\"${name}\"): lines must be exactly 3 [x1, y1, x2, y2] segments`);\n  }\n  if (def.hidden !== undefined && (!Array.isArray(def.hidden) || def.hidden.length !== 3)) {\n    throw new TypeError(`defineStrokeIcon(\"${name}\"): hidden must have exactly 3 booleans`);\n  }\n  strokeIcons[name] = def;\n}\n\nconst warnedNames = new Set<string>();\n\nfunction resolveStrokeIcon(name: string): StrokeIconDef {\n  if (Object.prototype.hasOwnProperty.call(strokeIcons, name)) return strokeIcons[name];\n  if (process.env.NODE_ENV !== \"production\" && !warnedNames.has(name)) {\n    warnedNames.add(name);\n    console.warn(`StrokeMorphIcon: unknown name \"${name}\", rendering \"dot\" instead.`);\n  }\n  return strokeIcons.dot;\n}\n\n// Effective geometry: hidden lines collapse onto the centroid of the visible endpoints.\nconst effCache = new WeakMap<StrokeIconDef, Seg[]>();\n\nfunction effOf(def: StrokeIconDef): Seg[] {\n  const cached = effCache.get(def);\n  if (cached) return cached;\n  const visible = [0, 1, 2].map((i) => !def.hidden?.[i]);\n  let sx = 0;\n  let sy = 0;\n  let n = 0;\n  def.lines.forEach(([x1, y1, x2, y2], i) => {\n    if (!visible[i]) return;\n    sx += x1 + x2;\n    sy += y1 + y2;\n    n += 2;\n  });\n  const cx = n ? sx / n : 12;\n  const cy = n ? sy / n : 12;\n  const eff = def.lines.map((seg, i): Seg => (visible[i] ? seg : [cx, cy, cx, cy]));\n  effCache.set(def, eff);\n  return eff;\n}\n\nfunction visibleOf(def: StrokeIconDef): boolean[] {\n  return [0, 1, 2].map((i) => !def.hidden?.[i]);\n}\n\ninterface Assignment {\n  perm: number[]; // source line i goes to target line perm[i]\n  flip: boolean[]; // swap that line's endpoints\n}\n\nconst PERMS = [\n  [0, 1, 2],\n  [0, 2, 1],\n  [1, 0, 2],\n  [1, 2, 0],\n  [2, 0, 1],\n  [2, 1, 0],\n];\n\n// Best endpoint matching: 6 permutations, and per line the cheaper of the 2 endpoint flips\n// (the 8 flip combinations reduce to this because each line's flip is independent).\nfunction bestAssignment(src: Seg[], dst: Seg[]): Assignment {\n  let best: Assignment = { perm: [0, 1, 2], flip: [false, false, false] };\n  let bestCost = Infinity;\n  for (const perm of PERMS) {\n    let total = 0;\n    const flip: boolean[] = [];\n    for (let i = 0; i < 3; i++) {\n      const [ax1, ay1, ax2, ay2] = src[i];\n      const [bx1, by1, bx2, by2] = dst[perm[i]];\n      const straight = (ax1 - bx1) ** 2 + (ay1 - by1) ** 2 + (ax2 - bx2) ** 2 + (ay2 - by2) ** 2;\n      const crossed = (ax1 - bx2) ** 2 + (ay1 - by2) ** 2 + (ax2 - bx1) ** 2 + (ay2 - by1) ** 2;\n      flip.push(crossed < straight);\n      total += Math.min(straight, crossed);\n    }\n    if (total < bestCost) {\n      bestCost = total;\n      best = { perm: [...perm], flip };\n    }\n  }\n  return best;\n}\n\n// Memoised per (from, to) pair of defs. Used when the icon has settled on `from`.\nconst matchCache = new WeakMap<StrokeIconDef, WeakMap<StrokeIconDef, Assignment>>();\n\nfunction canonicalMatch(from: StrokeIconDef, to: StrokeIconDef): Assignment {\n  let inner = matchCache.get(from);\n  if (!inner) {\n    inner = new WeakMap();\n    matchCache.set(from, inner);\n  }\n  const cached = inner.get(to);\n  if (cached) return cached;\n  const result = bestAssignment(effOf(from), effOf(to));\n  inner.set(to, result);\n  return result;\n}\n\n// Shortest signed rotation from `from` to `to` (degrees), in (-180, 180].\nfunction shortestDelta(from: number, to: number): number {\n  return ((((to - from) % 360) + 540) % 360) - 180;\n}\n\n// Attributes are written to 2 decimals (0.005 of a 24-unit box). Finer precision only adds settle time.\nconst fmt = (v: number) => String(Math.round(v * 100) / 100);\nconst COORDS = [\"x1\", \"y1\", \"x2\", \"y2\"] as const;\n\ninterface MorphEls {\n  group: SVGGElement;\n  lines: (SVGLineElement | null)[];\n}\n\n// Owns the imperative morph. React renders once; every frame writes attributes through refs.\nclass Morph {\n  private els: MorphEls | null = null;\n  private cur = new Float64Array(12);\n  private from = new Float64Array(12);\n  private to = new Float64Array(12);\n  private curAngle: number;\n  private fromAngle: number;\n  private toAngle: number;\n  private curScale = 1;\n  private fromScale = 1;\n  private toScale = 1;\n  private curNudge: [number, number];\n  private fromNudge: [number, number];\n  private toNudge: [number, number];\n  private slotLine = [0, 1, 2]; // settled: element s shows canonical line slotLine[s]\n  private targetLine = [0, 1, 2];\n  private visibleTo = [true, true, true];\n  private spring: SpringState = { x: 0, v: 0 };\n  private written: (string | undefined)[] = [];\n  private strokeWidth = 2;\n  private active = false;\n  private cfg = DEFAULT_SPRING;\n  target: StrokeIconDef;\n\n  constructor(def: StrokeIconDef) {\n    this.target = def;\n    effOf(def).forEach((seg, s) => this.to.set(seg, s * 4));\n    this.cur.set(this.to);\n    this.from.set(this.to);\n    this.curAngle = this.fromAngle = this.toAngle = def.rotation ?? 0;\n    this.curScale = this.fromScale = this.toScale = def.strokeScale ?? 1;\n    this.curNudge = this.fromNudge = this.toNudge = nudgeOf(def);\n  }\n\n  bind(els: MorphEls) {\n    this.els = els;\n    this.paint(1);\n  }\n\n  setConfig(cfg: { stiffness: number; damping: number; mass: number }) {\n    this.cfg = cfg;\n  }\n\n  setStrokeWidth(strokeWidth: number) {\n    this.strokeWidth = strokeWidth;\n    this.paint(this.active ? this.spring.x : 1);\n  }\n\n  retarget(next: StrokeIconDef, reduce: boolean) {\n    const prev = this.target;\n    const sameGroup = !!next.group && next.group === prev.group;\n    this.target = next;\n\n    if (!sameGroup) {\n      let assignment: Assignment;\n      if (this.active) {\n        // Mid-flight: match from the current lerped geometry, not from a settled def.\n        const current: Seg[] = [0, 1, 2].map((s) => [\n          this.cur[s * 4],\n          this.cur[s * 4 + 1],\n          this.cur[s * 4 + 2],\n          this.cur[s * 4 + 3],\n        ]);\n        assignment = bestAssignment(current, effOf(next));\n      } else {\n        assignment = canonicalMatch(prev, next);\n      }\n      const eff = effOf(next);\n      const visible = visibleOf(next);\n      for (let s = 0; s < 3; s++) {\n        const c = this.active ? s : this.slotLine[s];\n        const t = this.active ? assignment.perm[s] : assignment.perm[c];\n        const flip = this.active ? assignment.flip[s] : assignment.flip[c];\n        this.targetLine[s] = t;\n        const [x1, y1, x2, y2] = eff[t];\n        const seg: Seg = flip ? [x2, y2, x1, y1] : [x1, y1, x2, y2];\n        this.to.set(seg, s * 4);\n        this.visibleTo[s] = visible[t];\n      }\n      // A line that changes visibility fades over 120ms ease-out, or instantly when reduced.\n      this.applyVisibility(reduce);\n    }\n\n    this.fromAngle = this.curAngle;\n    this.fromScale = this.curScale;\n    this.fromNudge = [this.curNudge[0], this.curNudge[1]];\n    this.from.set(this.cur);\n    this.toAngle = this.curAngle + shortestDelta(this.curAngle, next.rotation ?? 0);\n    this.toScale = next.strokeScale ?? 1;\n    this.toNudge = nudgeOf(next);\n\n    if (reduce) {\n      this.settle();\n      return;\n    }\n    this.spring.x = 0; // keep the velocity so an interrupted move carries its momentum\n    this.active = true;\n  }\n\n  private applyVisibility(reduce: boolean) {\n    const els = this.els;\n    if (!els) return;\n    for (let s = 0; s < 3; s++) {\n      const line = els.lines[s];\n      if (!line) continue;\n      line.style.transition = reduce ? \"none\" : `opacity 120ms ${easeCss.out}`;\n      line.style.opacity = this.visibleTo[s] ? \"1\" : \"0\";\n    }\n  }\n\n  // Frame step for useVisibleLoop. Returns false when idle.\n  step(dt: number): boolean {\n    if (!this.active) return false;\n    stepSpring(this.spring, 1, this.cfg, dt);\n    if (Math.abs(this.spring.x - 1) < 5e-4 && Math.abs(this.spring.v) < 5e-3) {\n      this.settle();\n      return false;\n    }\n    this.paint(this.spring.x);\n    return true;\n  }\n\n  // Snap to the exact canonical geometry of the target and go idle.\n  private settle() {\n    const eff = effOf(this.target);\n    for (let s = 0; s < 3; s++) {\n      this.slotLine[s] = this.targetLine[s];\n      const seg = eff[this.targetLine[s]];\n      this.to.set(seg, s * 4);\n    }\n    this.from.set(this.to);\n    this.fromAngle = this.toAngle;\n    this.curAngle = this.toAngle;\n    this.fromScale = this.toScale;\n    this.curScale = this.toScale;\n    this.fromNudge = [this.toNudge[0], this.toNudge[1]];\n    this.curNudge = [this.toNudge[0], this.toNudge[1]];\n    this.active = false;\n    this.spring.x = 1;\n    this.spring.v = 0;\n    this.paint(1);\n  }\n\n  private paint(p: number) {\n    const els = this.els;\n    if (!els) return;\n    for (let s = 0; s < 3; s++) {\n      const line = els.lines[s];\n      for (let k = 0; k < 4; k++) {\n        const i = s * 4 + k;\n        const v = this.from[i] + (this.to[i] - this.from[i]) * p;\n        this.cur[i] = v;\n        const str = fmt(v);\n        if (line && this.written[i] !== str) {\n          line.setAttribute(COORDS[k], str);\n          this.written[i] = str;\n        }\n      }\n    }\n    this.curAngle = this.fromAngle + (this.toAngle - this.fromAngle) * p;\n    this.curScale = this.fromScale + (this.toScale - this.fromScale) * p;\n    const nx = this.fromNudge[0] + (this.toNudge[0] - this.fromNudge[0]) * p;\n    const ny = this.fromNudge[1] + (this.toNudge[1] - this.fromNudge[1]) * p;\n    this.curNudge = [nx, ny];\n    const transform = `rotate(${fmt(this.curAngle)} 12 12) translate(${fmt(nx)} ${fmt(ny)})`;\n    if (this.written[12] !== transform) {\n      els.group.setAttribute(\"transform\", transform);\n      this.written[12] = transform;\n    }\n    const sw = fmt(this.strokeWidth * this.curScale);\n    if (this.written[13] !== sw) {\n      els.group.setAttribute(\"stroke-width\", sw);\n      this.written[13] = sw;\n    }\n  }\n}\n\nexport function StrokeMorphIcon({\n  name,\n  size = 24,\n  strokeWidth = 2,\n  color = \"currentColor\",\n  spring,\n  spin,\n  label,\n  className,\n}: StrokeMorphIconProps) {\n  const reduceMotion = useReducedMotion() === true;\n  const def = resolveStrokeIcon(name);\n\n  // Initial markup only. After mount, attributes are owned by the Morph, so these\n  // constants never change and React never overwrites an in-flight frame.\n  const [initial] = useState(() => {\n    const eff = effOf(def);\n    const visible = visibleOf(def);\n    return {\n      segs: eff,\n      visible,\n      transform: `rotate(${def.rotation ?? 0} 12 12) translate(${nudgeOf(def).map(fmt).join(\" \")})`,\n      strokeWidth: fmt(strokeWidth * (def.strokeScale ?? 1)),\n    };\n  });\n  const [morph] = useState(() => new Morph(def));\n\n  const svgRef = useRef<SVGSVGElement>(null);\n  const groupRef = useRef<SVGGElement>(null);\n  const lineRefs = useRef<(SVGLineElement | null)[]>([null, null, null]);\n\n  // The <svg> stays the root (icon-with-label rules target `>svg`). The loop hook only reads\n  // the element's box and dataset, which SVG elements also have.\n  const loop = useVisibleLoop(svgRef as RefObject<HTMLElement | null>, (dt) => morph.step(dt));\n\n  useLayoutEffect(() => {\n    if (!groupRef.current) return;\n    morph.bind({ group: groupRef.current, lines: lineRefs.current });\n  }, [morph]);\n\n  useLayoutEffect(() => {\n    morph.setConfig(spring ?? DEFAULT_SPRING);\n  });\n\n  useLayoutEffect(() => {\n    if (morph.target === def) return;\n    morph.retarget(def, reduceMotion);\n    if (!reduceMotion) loop.wake();\n  }, [def, reduceMotion, morph, loop]);\n\n  useLayoutEffect(() => {\n    morph.setStrokeWidth(strokeWidth);\n  }, [morph, strokeWidth]);\n\n  const spinning = (spin ?? def.spin) === true;\n\n  return (\n    <svg\n      ref={svgRef}\n      width={size}\n      height={size}\n      viewBox=\"0 0 24 24\"\n      fill=\"none\"\n      stroke={color}\n      strokeLinecap=\"round\"\n      strokeLinejoin=\"round\"\n      role={label ? \"img\" : undefined}\n      aria-label={label}\n      aria-hidden={label ? undefined : true}\n      className={cn(\"shrink-0\", className)}\n    >\n      <g\n        className={spinning ? \"motion-safe:animate-spin\" : undefined}\n        style={{ transformBox: \"view-box\", transformOrigin: \"12px 12px\" }}\n      >\n        <g ref={groupRef} strokeWidth={initial.strokeWidth} transform={initial.transform}>\n          {initial.segs.map(([x1, y1, x2, y2], i) => (\n            <line\n              key={i}\n              ref={(el) => {\n                lineRefs.current[i] = el;\n              }}\n              x1={x1}\n              y1={y1}\n              x2={x2}\n              y2={y2}\n              style={{ opacity: initial.visible[i] ? 1 : 0 }}\n            />\n          ))}\n        </g>\n      </g>\n    </svg>\n  );\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/utilities/stroke-morph-icon.tsx"
    },
    {
      "path": "lib/utils.ts",
      "content": "import { clsx, type ClassValue } from \"clsx\"\nimport { twMerge } from \"tailwind-merge\"\n\nexport function cn(...inputs: ClassValue[]) {\n  return twMerge(clsx(inputs))\n}\n",
      "type": "registry:lib",
      "target": "@lib/utils.ts"
    },
    {
      "path": "components/bjork-ui/_core/loop.ts",
      "content": "\"use client\";\n\nimport { useCallback, useEffect, useMemo, useRef, type RefObject } from \"react\";\n\nexport interface VisibleLoopOptions {\n  enabled?: boolean;\n  fpsCap?: number;\n  rootMargin?: string;\n}\n\n/**\n * Runs `frame(dt, t)` on requestAnimationFrame while the element is near the viewport,\n * the tab is visible and `enabled` is not false. Return `false` from `frame` to go idle\n * until `wake()` is called. Writes `data-loop` on the element: running, idle or paused.\n */\nexport function useVisibleLoop(\n  ref: RefObject<HTMLElement | null>,\n  frame: (dt: number, t: number) => boolean | void,\n  opts?: VisibleLoopOptions,\n): { wake: () => void } {\n  const enabled = opts?.enabled !== false;\n  const fpsCap = opts?.fpsCap ?? 0;\n  const rootMargin = opts?.rootMargin ?? \"96px\";\n\n  const frameRef = useRef(frame);\n  useEffect(() => {\n    frameRef.current = frame;\n  }, [frame]);\n\n  const wakeRef = useRef<() => void>(() => {});\n  const wake = useCallback(() => wakeRef.current(), []);\n\n  useEffect(() => {\n    const el = ref.current;\n    if (!el || typeof window === \"undefined\") return;\n\n    let wants = true; // false once the frame callback returns false\n    let inView = false;\n    let raf = 0;\n    let last = 0;\n    let t = 0;\n    const minFrame = fpsCap > 0 ? 1000 / fpsCap : 0;\n\n    const canRun = () => enabled && inView && document.visibilityState === \"visible\";\n    const stop = () => {\n      if (raf) cancelAnimationFrame(raf);\n      raf = 0;\n    };\n\n    const update = () => {\n      if (!enabled) {\n        stop();\n        el.dataset.loop = \"paused\";\n        return;\n      }\n      if (!wants) {\n        stop();\n        el.dataset.loop = \"idle\";\n        return;\n      }\n      if (!canRun()) {\n        stop();\n        el.dataset.loop = \"paused\";\n        return;\n      }\n      el.dataset.loop = \"running\";\n      if (!raf) {\n        last = performance.now();\n        raf = requestAnimationFrame(tick);\n      }\n    };\n\n    const tick = (now: number) => {\n      raf = 0;\n      if (!canRun() || !wants) {\n        update();\n        return;\n      }\n      const elapsed = now - last;\n      if (minFrame && elapsed < minFrame - 0.5) {\n        raf = requestAnimationFrame(tick);\n        return;\n      }\n      last = now;\n      const dt = Math.min(0.05, Math.max(0, elapsed / 1000));\n      t += dt;\n      const keep = frameRef.current(dt, t);\n      if (keep === false) {\n        wants = false;\n        update();\n        return;\n      }\n      raf = requestAnimationFrame(tick);\n    };\n\n    const observer = new IntersectionObserver(\n      ([entry]) => {\n        inView = entry.isIntersecting;\n        update();\n      },\n      { rootMargin },\n    );\n    observer.observe(el);\n\n    const onVisibility = () => update();\n    document.addEventListener(\"visibilitychange\", onVisibility);\n\n    wakeRef.current = () => {\n      wants = true;\n      update();\n    };\n\n    update();\n\n    return () => {\n      stop();\n      observer.disconnect();\n      document.removeEventListener(\"visibilitychange\", onVisibility);\n      wakeRef.current = () => {};\n    };\n  }, [ref, enabled, fpsCap, rootMargin]);\n\n  return useMemo(() => ({ wake }), [wake]);\n}\n\n// matchMedia based check. False on the server.\nexport function isCoarsePointer(): boolean {\n  if (typeof window === \"undefined\" || typeof window.matchMedia !== \"function\") return false;\n  return window.matchMedia(\"(pointer: coarse)\").matches;\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/_core/loop.ts"
    },
    {
      "path": "components/bjork-ui/_core/spring.ts",
      "content": "// Pure spring math, no React. Units: stiffness k, damping d (coefficient), mass m, time in seconds.\n\nexport interface SpringConfig {\n  stiffness: number;\n  damping: number;\n  mass: number;\n}\n\nexport interface SpringState {\n  x: number;\n  v: number;\n}\n\n// Damping ratio zeta = d / (2 * sqrt(k * m)).\nexport function dampingRatio(c: SpringConfig): number {\n  return c.damping / (2 * Math.sqrt(c.stiffness * c.mass));\n}\n\n// Exact solution of y'' = -(k/m) y - (d/m) y' for displacement y0 and velocity v0 at time t.\n// Returns displacement and velocity together so stepping can be exact, not integrated.\nfunction solveLinear(t: number, c: SpringConfig, y0: number, v0: number): { y: number; v: number } {\n  const w0 = Math.sqrt(c.stiffness / c.mass);\n  const z = dampingRatio(c);\n\n  if (Math.abs(z - 1) < 1e-9) {\n    // Critically damped.\n    const e = Math.exp(-w0 * t);\n    const b = v0 + w0 * y0;\n    return { y: e * (y0 + b * t), v: e * (b - w0 * (y0 + b * t)) };\n  }\n  if (z < 1) {\n    // Underdamped.\n    const wd = w0 * Math.sqrt(1 - z * z);\n    const a = z * w0;\n    const B = (v0 + a * y0) / wd;\n    const e = Math.exp(-a * t);\n    const cos = Math.cos(wd * t);\n    const sin = Math.sin(wd * t);\n    return {\n      y: e * (y0 * cos + B * sin),\n      v: e * (-a * (y0 * cos + B * sin) + wd * (-y0 * sin + B * cos)),\n    };\n  }\n  // Overdamped.\n  const s = w0 * Math.sqrt(z * z - 1);\n  const r1 = -z * w0 + s;\n  const r2 = -z * w0 - s;\n  const B = (v0 - r1 * y0) / (r2 - r1);\n  const A = y0 - B;\n  const e1 = Math.exp(r1 * t);\n  const e2 = Math.exp(r2 * t);\n  return { y: A * e1 + B * e2, v: A * r1 * e1 + B * r2 * e2 };\n}\n\n// Analytic position at time t for a spring from `from` to `to` with initial velocity v0.\nexport function springAt(t: number, c: SpringConfig, from = 0, to = 1, v0 = 0): number {\n  return to + solveLinear(t, c, from - to, v0).y;\n}\n\n// Overshoot as a fraction of the total travel. Zero when critically or overdamped.\nexport function overshoot(c: SpringConfig): number {\n  const z = dampingRatio(c);\n  if (z >= 1) return 0;\n  return Math.exp((-Math.PI * z) / Math.sqrt(1 - z * z));\n}\n\n// Seconds until the spring stays within epsilon of its target (fraction of travel).\n// Found by scanning backwards from a bound derived from the slowest decay rate.\nexport function settleTime(c: SpringConfig, epsilon = 0.001): number {\n  const w0 = Math.sqrt(c.stiffness / c.mass);\n  const z = dampingRatio(c);\n  const slowest = z < 1 ? z * w0 : (z - Math.sqrt(z * z - 1)) * w0;\n  const tEnd = (Math.log(1 / epsilon) / slowest) * 1.5 + 0.05;\n  const steps = 4000;\n  const dt = tEnd / steps;\n  const band = epsilon;\n  let last = 0;\n  for (let i = 0; i <= steps; i++) {\n    const t = i * dt;\n    if (Math.abs(springAt(t, c, 1, 0, 0)) >= band) last = t;\n  }\n  return last + dt;\n}\n\n// Advances the state by dt towards `target`. Uses the exact solution of the linear spring\n// (no integration), so it tracks springAt to rounding error at any step size and stays stable\n// for stiff configs where a fixed-step integrator drifts.\nexport function stepSpring(s: SpringState, target: number, c: SpringConfig, dt: number): void {\n  if (dt <= 0) return;\n  const r = solveLinear(dt, c, s.x - target, s.v);\n  s.x = target + r.y;\n  s.v = r.v;\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/_core/spring.ts"
    }
  ],
  "cssVars": {
    "light": {
      "bjork-bg": "#f7f3ea",
      "bjork-surface": "#fffcf6",
      "bjork-surface-muted": "rgba(250, 246, 237, 0.94)",
      "bjork-surface-hover": "#f5efe3",
      "bjork-surface-active": "#efe7d8",
      "bjork-panel": "#f8f2e7",
      "bjork-menu": "rgba(255, 252, 246, 0.98)",
      "bjork-field": "rgba(255, 252, 246, 0.96)",
      "bjork-field-muted": "rgba(248, 242, 231, 0.82)",
      "bjork-field-inset": "rgba(239, 231, 216, 0.72)",
      "bjork-error-bg": "#fff0e8",
      "bjork-text": "#171717",
      "bjork-text-strong": "rgba(23, 23, 23, 0.9)",
      "bjork-text-medium": "rgba(23, 23, 23, 0.78)",
      "bjork-text-muted": "rgba(23, 23, 23, 0.68)",
      "bjork-text-soft": "rgba(23, 23, 23, 0.62)",
      "bjork-text-faint": "rgba(23, 23, 23, 0.22)",
      "bjork-inverted-text": "#fff8f0",
      "bjork-border": "#eee6db",
      "bjork-border-muted": "#f5ede2",
      "bjork-border-strong": "#e1d7c8",
      "bjork-thumb": "#a49b8e",
      "bjork-track": "#ded6ca",
      "bjork-accent": "#ec7d43",
      "bjork-accent-hover": "#f0935f",
      "bjork-accent-soft": "rgba(236, 125, 67, 0.1)",
      "bjork-accent-muted": "rgba(236, 125, 67, 0.2)",
      "bjork-accent-badge": "rgba(236, 125, 67, 0.16)",
      "bjork-accent-badge-foreground": "#8d421d",
      "bjork-accent-foreground": "#3f2112",
      "bjork-accent-fill": "#ec7d43",
      "bjork-accent-fill-hover": "#f0935f",
      "bjork-shadow-surface": "inset 0 7px 14px rgba(88, 72, 49, 0.045), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.92), inset 1px 0 0 rgba(88, 72, 49, 0.026), inset -1px 0 0 rgba(255, 255, 255, 0.68), 0 14px 22px -9px rgba(66, 52, 33, 0.11)",
      "bjork-shadow-soft": "inset 0 1px 0 rgba(88, 72, 49, 0.045), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.86)",
      "bjork-shadow-panel": "inset 0 1px 0 rgba(88, 72, 49, 0.04), inset 1px 0 0 rgba(88, 72, 49, 0.024), inset -1px 0 0 rgba(255, 255, 255, 0.64), 0 18px 38px -30px rgba(66, 52, 33, 0.2)",
      "bjork-shadow-menu": "inset 0 1px 0 rgba(88, 72, 49, 0.04), inset 0 12px 24px rgba(88, 72, 49, 0.022), inset 1px 0 0 rgba(88, 72, 49, 0.024), inset -1px 0 0 rgba(255, 255, 255, 0.62), 0 22px 44px -26px rgba(66, 52, 33, 0.22)",
      "bjork-shadow-inset": "inset 0 1px 10px rgba(88, 72, 49, 0.12), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.72)",
      "bjork-ring-offset": "#f7f3ea"
    },
    "dark": {
      "bjork-bg": "#111111",
      "bjork-surface": "#121212",
      "bjork-surface-muted": "rgba(22, 22, 22, 0.92)",
      "bjork-surface-hover": "#161616",
      "bjork-surface-active": "#202020",
      "bjork-panel": "#0d0d0d",
      "bjork-menu": "rgba(18, 18, 18, 0.98)",
      "bjork-field": "rgba(18, 18, 18, 0.95)",
      "bjork-field-muted": "rgba(18, 18, 18, 0.55)",
      "bjork-field-inset": "rgba(9, 9, 9, 0.75)",
      "bjork-error-bg": "#130d0a",
      "bjork-text": "#ededed",
      "bjork-text-strong": "rgba(237, 237, 237, 0.9)",
      "bjork-text-medium": "rgba(237, 237, 237, 0.72)",
      "bjork-text-muted": "rgba(237, 237, 237, 0.6)",
      "bjork-text-soft": "rgba(237, 237, 237, 0.5)",
      "bjork-text-faint": "rgba(237, 237, 237, 0.22)",
      "bjork-inverted-text": "#080808",
      "bjork-border": "#232323",
      "bjork-border-muted": "#1c1c1c",
      "bjork-border-strong": "#343434",
      "bjork-thumb": "#626262",
      "bjork-track": "#090909",
      "bjork-accent": "#ec5c13",
      "bjork-accent-hover": "#f07832",
      "bjork-accent-soft": "rgba(236, 92, 19, 0.12)",
      "bjork-accent-muted": "rgba(236, 92, 19, 0.24)",
      "bjork-accent-badge": "#b84a12",
      "bjork-accent-badge-foreground": "#fff2ea",
      "bjork-accent-foreground": "#fff2ea",
      "bjork-accent-fill": "#b84a12",
      "bjork-accent-fill-hover": "#a84a14",
      "bjork-shadow-surface": "inset 0 7px 14px rgba(255, 255, 255, 0.03), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.06), 0 14px 20px -6px rgba(0, 0, 0, 0.45)",
      "bjork-shadow-soft": "inset 0 1px 0 rgba(255, 255, 255, 0.045)",
      "bjork-shadow-panel": "inset 0 1px 0 rgba(255, 255, 255, 0.035), 0 18px 36px -28px rgba(0, 0, 0, 0.9)",
      "bjork-shadow-menu": "inset 0 1px 0 rgba(255, 255, 255, 0.055), inset 0 12px 24px rgba(255, 255, 255, 0.018), inset 0 -18px 26px rgba(0, 0, 0, 0.24), 0 22px 42px -22px rgba(0, 0, 0, 0.9)",
      "bjork-shadow-inset": "inset 0 1px 10px rgba(0, 0, 0, 0.45)",
      "bjork-ring-offset": "#080808"
    }
  },
  "css": {
    ".bjork-range": {
      "box-shadow": "inset 0 1px 1px rgba(255, 255, 255, 0.04), 0 0 14px rgba(189, 69, 20, 0.06)"
    },
    ".bjork-range::-webkit-slider-thumb": {
      "appearance": "none",
      "width": "16px",
      "height": "8px",
      "border": "0",
      "border-radius": "999px",
      "background": "var(--bjork-thumb)",
      "box-shadow": "inset 0 1px 0 rgba(255, 255, 255, 0.18), 0 0 0 1px rgba(0, 0, 0, 0.42)"
    },
    ".bjork-range::-moz-range-thumb": {
      "width": "16px",
      "height": "8px",
      "border": "0",
      "border-radius": "999px",
      "background": "var(--bjork-thumb)",
      "box-shadow": "inset 0 1px 0 rgba(255, 255, 255, 0.18), 0 0 0 1px rgba(0, 0, 0, 0.42)"
    },
    ".bjork-layered-button-accent, .bjork-layered-button-raised": {
      "position": "relative",
      "isolation": "isolate",
      "appearance": "none",
      "overflow": "hidden",
      "border": "0",
      "border-radius": "13px",
      "box-shadow": "inset 0 1px 0 #ffffff38, 0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a",
      "transition": "filter 150ms ease-out, box-shadow 150ms ease-out"
    },
    ".bjork-layered-button-accent::after, .bjork-layered-button-raised::after": {
      "position": "absolute",
      "inset": "0",
      "pointer-events": "none",
      "content": "\"\"",
      "border": "1.5px solid transparent",
      "border-radius": "inherit",
      "background": "linear-gradient(#ffffffb8, #0000003d 41% 75%, #ffffff47) border-box",
      "mix-blend-mode": "overlay",
      "-webkit-mask-image": "linear-gradient(#000, #000), linear-gradient(#000, #000)",
      "mask-image": "linear-gradient(#000, #000), linear-gradient(#000, #000)",
      "-webkit-mask-clip": "padding-box, border-box",
      "mask-clip": "padding-box, border-box",
      "-webkit-mask-origin": "padding-box, border-box",
      "mask-origin": "padding-box, border-box",
      "-webkit-mask-composite": "xor",
      "mask-composite": "exclude"
    },
    ".bjork-layered-button-accent": {
      "color": "oklch(100% 0 0)",
      "text-shadow": "0 -1px #00000040",
      "background": "radial-gradient(ellipse at -20px top, rgba(255, 255, 255, 0.14), transparent), linear-gradient(180deg, #ec5c13 0%, #ec5c13 62%, color-mix(in oklab, #ec5c13 84%, black 16%) 100%)"
    },
    ".bjork-layered-button-raised": {
      "color": "oklch(100% 0 0)",
      "text-shadow": "0 -1px #00000026",
      "background": "radial-gradient(ellipse at -20px top, #ffffff38, #fff0), linear-gradient(180deg, oklch(0.1881 0.006 265), oklch(0.5493 0.0081 265))"
    },
    ".dark .bjork-layered-button-raised": {
      "color": "oklch(0.2574 0.0056 265)",
      "text-shadow": "0 -1px #00000026",
      "background": "radial-gradient(ellipse at -20px top, #ffffff38, #fff0), linear-gradient(180deg, color-mix(in oklab, oklch(0.9674 0.0013 265) 80%, oklch(0.2574 0.0056 265) 20%), color-mix(in oklab, oklch(0.669 0.0107 265) 80%, oklch(0.2574 0.0056 265) 20%))"
    },
    "@media (hover: hover)": {
      ".bjork-layered-button-accent:hover": {
        "filter": "brightness(1.08) saturate(1.04)"
      },
      ".bjork-layered-button-raised:hover": {
        "filter": "brightness(1.08) contrast(0.9)"
      }
    }
  },
  "meta": {
    "collection": "AI",
    "registryUrl": "https://ui.isaiahbjork.com/approval-gate.json",
    "installCommand": "npx shadcn@latest add https://ui.isaiahbjork.com/approval-gate.json"
  },
  "type": "registry:component"
}