{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Build a TypeScript React example for guest arrivals in a boutique hotel operations console. Use the slot-based card API pattern, keep the API reusable, and give the UI a distinctive dark, editorial treatment."},{"role":"assistant","content":"This version applies slot-based card API to a real a boutique hotel operations console workflow, while the midnight cyan palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\ntype FrameProps = { children: React.ReactNode };\n\nfunction InsightFrame({ children }: FrameProps) {\n return
{children}
;\n}\nInsightFrame.Header = function Header({ children }: FrameProps) {\n return
{children}
;\n};\nInsightFrame.Body = function Body({ children }: FrameProps) {\n return
{children}
;\n};\nInsightFrame.Footer = function Footer({ children }: FrameProps) {\n return ;\n};\n\nfunction StaySlotCard1Core() {\n return (\n
\n \n \n

Guest arrivals

Composed around intent

\n Live\n \n \n Slots own their spacing.\n \n
\n );\n}\n\n\nfunction StaySlotCard1Signature() {\n return (\n \n );\n}\n\n\n\n\nfunction StaySlotCard1Page({ children }: { children: React.ReactNode }) {\n return

Editorial workspace

A deliberate single-column reading rhythm.

v1
{children}
;\n}\n\nexport function StaySlotCard1() {\n return ;\n}\n\n\nfunction StaySlotCard1VariantFeature() {\n const lanes = [\n { name: \"Ready\", records: [\"Brief\", \"Owner\"] },\n { name: \"Watching\", records: [\"Dependency\"] },\n { name: \"Resolved\", records: [\"Archive\", \"Receipt\"] },\n ];\n return (\n
\n

Variant board

Work moves through explicit lanes.

3 lanes
\n
\n {lanes.map((lane) =>

{lane.name}

    {lane.records.map((record) =>
  • {record}
    • )}
)}\n
\n
\n );\n}\n\n\nfunction StaySlotCard1VariantAlgorithm() {\n const sources = [{ label: \"Brief\", weight: 4 }, { label: \"Evidence\", weight: 3 }, { label: \"Decision\", weight: 5 }];\n const total = sources.reduce((sum, source) => sum + source.weight, 0);\n return

Weighted sources

{total} points

;\n}\n\n\nfunction StaySlotCard1PatternLens() {\n const checkpoints = [\"Scope\", \"Owner\", \"Evidence\"];\n return

Pattern checklist

    {checkpoints.map((checkpoint, index) =>
  1. {index + 1}{checkpoint}
    2. )}
;\n}\n```"}]} {"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Debug a React implementation for pet patients in a veterinary care portal. The interaction works only with a mouse and state leaks between views. Replace the fragile approach with polymorphic action primitive and explain the important fix briefly."},{"role":"assistant","content":"This version applies polymorphic action primitive to a real a veterinary care portal workflow, while the forest lime palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport type { ComponentPropsWithoutRef, ElementType, ReactNode } from \"react\";\n\ntype ActionProps = {\n as?: T;\n tone?: \"solid\" | \"quiet\";\n children: ReactNode;\n} & Omit, \"as\" | \"children\">;\n\nfunction Action({ as, tone = \"solid\", children, className = \"\", ...props }: ActionProps) {\n const Tag = as ?? \"button\";\n const toneClass = tone === \"solid\" ? \"bg-lime-300 text-slate-950 hover:bg-lime-200\" : \"bg-emerald-800 text-emerald-50 hover:brightness-110\";\n return {children};\n}\n\nfunction PatientPolymorphicAction1Core() {\n return (\n
\n
\n
\n

Pet patients

\n

One action API, several semantic destinations.

\n
PublishRead details
\n
\n \n
\n
\n );\n}\n\n\nfunction PatientPolymorphicAction1Signature() {\n return (\n \n );\n}\n\n\n\n\nfunction PatientPolymorphicAction1Page({ children }: { children: React.ReactNode }) {\n return

Editorial workspace

A deliberate single-column reading rhythm.

v1
{children}
Built as an isolated React pattern example.
;\n}\n\nexport function PatientPolymorphicAction1() {\n return ;\n}\n\n\nfunction PatientPolymorphicAction1VariantFeature() {\n const lanes = [\n { name: \"Ready\", records: [\"Brief\", \"Owner\"] },\n { name: \"Watching\", records: [\"Dependency\"] },\n { name: \"Resolved\", records: [\"Archive\", \"Receipt\"] },\n ];\n return (\n
\n

Variant board

Work moves through explicit lanes.

3 lanes
\n
\n {lanes.map((lane) =>

{lane.name}

    {lane.records.map((record) =>
  • {record}
    • )}
)}\n
\n
\n );\n}\n\n\nfunction PatientPolymorphicAction1VariantAlgorithm() {\n const sources = [{ label: \"Brief\", weight: 4 }, { label: \"Evidence\", weight: 3 }, { label: \"Decision\", weight: 5 }];\n const total = sources.reduce((sum, source) => sum + source.weight, 0);\n return

Weighted sources

{total} points

    {sources.map((source) =>
  • {source.label}{source.weight}
    • )}
;\n}\n\n\nfunction PatientPolymorphicAction1PatternLens() {\n const rows = [{ label: \"Clarity\", value: \"High\" }, { label: \"Risk\", value: \"Low\" }, { label: \"Owner\", value: \"Named\" }];\n return
{rows.map((row) => )}
Pattern readout
{row.label}{row.value}
;\n}\n```"}]} {"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Explain when to use headless disclosure composition in a personal finance coaching app, then show a compact production-minded component for savings goals in a personal finance coaching app."},{"role":"assistant","content":"This version applies headless disclosure composition to a real a personal finance coaching app workflow, while the ocean teal palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\ntype DisclosureProps = { label: string; children: React.ReactNode };\n\nfunction Disclosure({ label, children }: DisclosureProps) {\n const [open, setOpen] = useState(false);\n const panelId = \"disclosure-panel-1\";\n return (\n
\n

\n {open &&
{children}
}\n
\n );\n}\n\nfunction GoalHeadlessDisclosure1Core() {\n return (\n
\n
\n

Savings goals

Behavior without a prescriptive card.

\n Use the same accessible state primitive inside a policy drawer, invoice panel, or inline review surface.\n \n
\n
\n );\n}\n\n\nfunction GoalHeadlessDisclosure1Signature() {\n return (\n \n );\n}\n\n\n\n\nfunction GoalHeadlessDisclosure1Page({ children }: { children: React.ReactNode }) {\n return

Editorial workspace

A deliberate single-column reading rhythm.

v1
{children}
Built as an isolated React pattern example.
;\n}\n\nexport function GoalHeadlessDisclosure1() {\n return ;\n}\n\n\nfunction GoalHeadlessDisclosure1VariantFeature() {\n const lanes = [\n { name: \"Ready\", records: [\"Brief\", \"Owner\"] },\n { name: \"Watching\", records: [\"Dependency\"] },\n { name: \"Resolved\", records: [\"Archive\", \"Receipt\"] },\n ];\n return (\n
\n

Variant board

Work moves through explicit lanes.

3 lanes
\n
\n {lanes.map((lane) =>

{lane.name}

    {lane.records.map((record) =>
  • {record}
    • )}
)}\n
\n
\n );\n}\n\n\nfunction GoalHeadlessDisclosure1VariantAlgorithm() {\n const sources = [{ label: \"Brief\", weight: 4 }, { label: \"Evidence\", weight: 3 }, { label: \"Decision\", weight: 5 }];\n const total = sources.reduce((sum, source) => sum + source.weight, 0);\n return

Weighted sources

{total} points

    {sources.map((source) =>
  • {source.label}{source.weight}
    • )}
;\n}\n\n\nfunction GoalHeadlessDisclosure1PatternLens() {\n const signals = [{ label: \"Coverage\", value: 76 }, { label: \"Confidence\", value: 88 }, { label: \"Readiness\", value: 64 }];\n const average = Math.round(signals.reduce((total, signal) => total + signal.value, 0) / signals.length);\n return

Evidence mix

{average}%
{signals.map((signal) =>
{signal.label}
{signal.value}%
)}
;\n}\n```"}]} {"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Turn this UI brief into React: a focused control surface for recovery plans in a physiotherapy progress app, with a clear hierarchy, strong focus states, and layout slots with named children. Prefer a non-generic layout."},{"role":"assistant","content":"This version applies layout slots with named children to a real a physiotherapy progress app workflow, while the lagoon emerald palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\ntype WorkspaceProps = { rail: React.ReactNode; toolbar: React.ReactNode; children: React.ReactNode };\n\nfunction Workspace({ rail, toolbar, children }: WorkspaceProps) {\n return
{toolbar}
{children}
;\n}\n\nfunction PlanLayoutSlots1Core() {\n return (\n

Recovery plans

}\n toolbar={<>

Named layout slots

}\n >\n

The canvas stays independent

Consumers decide what occupies each region without a prop explosion.

\n \n );\n}\n\n\nfunction PlanLayoutSlots1Signature() {\n return (\n \n );\n}\n\n\n\n\nfunction PlanLayoutSlots1Page({ children }: { children: React.ReactNode }) {\n return

Editorial workspace

A deliberate single-column reading rhythm.

v1
{children}
Built as an isolated React pattern example.
;\n}\n\nexport function PlanLayoutSlots1() {\n return ;\n}\n\n\nfunction PlanLayoutSlots1VariantFeature() {\n const lanes = [\n { name: \"Ready\", records: [\"Brief\", \"Owner\"] },\n { name: \"Watching\", records: [\"Dependency\"] },\n { name: \"Resolved\", records: [\"Archive\", \"Receipt\"] },\n ];\n return (\n
\n

Variant board

Work moves through explicit lanes.

3 lanes
\n
\n {lanes.map((lane) =>

{lane.name}

    {lane.records.map((record) =>
  • {record}
    • )}
)}\n
\n
\n );\n}\n\n\nfunction PlanLayoutSlots1VariantAlgorithm() {\n const sources = [{ label: \"Brief\", weight: 4 }, { label: \"Evidence\", weight: 3 }, { label: \"Decision\", weight: 5 }];\n const total = sources.reduce((sum, source) => sum + source.weight, 0);\n return

Weighted sources

{total} points

    {sources.map((source) =>
  • {source.label}{source.weight}
    • )}
;\n}\n\n\nfunction PlanLayoutSlots1PatternLens() {\n const points = [18, 43, 35, 68, 82];\n return
Signal trajectory
Five checkpoints
index * 55 + \",\" + (100 - point)).join(\" \")} />{points.map((point, index) => )}
;\n}\n```"}]} {"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"I keep coupling rendering and behavior in site inspections in a solar installer field app. Refactor this sketch using container and presentational split: function Screen() { return ; }. Show the improved implementation."},{"role":"assistant","content":"This version applies container and presentational split to a real a solar installer field app workflow, while the ink fuchsia palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\ntype Record = { id: string; label: string; status: \"Ready\" | \"Waiting\" };\n\nfunction RecordList({ records, onPick }: { records: Record[]; onPick: (id: string) => void }) {\n return
    {records.map((record) =>
    • )}
;\n}\n\nfunction InspectionContainerPresentational1Core() {\n const [selectedId, setSelectedId] = useState(\"a\");\n const records: Record[] = [{ id: \"a\", label: \"Site inspections\", status: \"Ready\" }, { id: \"b\", label: \"Assigned review\", status: \"Waiting\" }];\n const selected = records.find((record) => record.id === selectedId);\n return (\n
\n

Container owns data

Presentational list owns display

\n \n
\n );\n}\n\n\nfunction InspectionContainerPresentational1Signature() {\n return (\n \n );\n}\n\n\n\n\nfunction InspectionContainerPresentational1Page({ children }: { children: React.ReactNode }) {\n return

Editorial workspace

A deliberate single-column reading rhythm.

v1
{children}
Built as an isolated React pattern example.
;\n}\n\nexport function InspectionContainerPresentational1() {\n return ;\n}\n\n\nfunction InspectionContainerPresentational1VariantFeature() {\n const lanes = [\n { name: \"Ready\", records: [\"Brief\", \"Owner\"] },\n { name: \"Watching\", records: [\"Dependency\"] },\n { name: \"Resolved\", records: [\"Archive\", \"Receipt\"] },\n ];\n return (\n
\n

Variant board

Work moves through explicit lanes.

3 lanes
\n
\n {lanes.map((lane) =>

{lane.name}

    {lane.records.map((record) =>
  • {record}
    • )}
)}\n
\n
\n );\n}\n\n\nfunction InspectionContainerPresentational1VariantAlgorithm() {\n const sources = [{ label: \"Brief\", weight: 4 }, { label: \"Evidence\", weight: 3 }, { label: \"Decision\", weight: 5 }];\n const total = sources.reduce((sum, source) => sum + source.weight, 0);\n return

Weighted sources

{total} points

    {sources.map((source) =>
  • {source.label}{source.weight}
    • )}
;\n}\n\n\nfunction InspectionContainerPresentational1PatternLens() {\n const [open, setOpen] = useState(false);\n return
setOpen(event.currentTarget.open)}>Why this boundary matters

Keep behavior near the decision it serves, while letting the surrounding page stay easy to scan and test.

;\n}\n```"}]} {"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Build a TypeScript React example for service routes in a neighborhood transit dashboard. Use the prop-getter state container pattern, keep the API reusable, and give the UI a distinctive dark, editorial treatment."},{"role":"assistant","content":"This version applies prop-getter state container to a real a neighborhood transit dashboard workflow, while the rose orange palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nfunction useChoice() {\n const [active, setActive] = useState(\"overview\");\n return {\n getOptionProps(id: string) {\n return { type: \"button\" as const, role: \"tab\", \"aria-selected\": active === id, tabIndex: active === id ? 0 : -1, onClick: () => setActive(id), className: active === id ? \"rounded-xl bg-orange-300 px-4 py-2 text-sm font-bold text-slate-950\" : \"rounded-xl px-4 py-2 text-sm text-rose-200 hover:bg-rose-800\" };\n },\n active,\n };\n}\n\nfunction RoutePropGetters1Core() {\n const choice = useChoice();\n return (\n
\n

Service routes

Behavior travels through prop getters.

\n
\n

The selected view is {choice.active}; consumers provide the markup.

\n
\n
\n );\n}\n\n\nfunction RoutePropGetters1Signature() {\n return (\n \n );\n}\n\n\n\n\nfunction RoutePropGetters1Page({ children }: { children: React.ReactNode }) {\n return

Editorial workspace

A deliberate single-column reading rhythm.

v1
{children}
Built as an isolated React pattern example.
;\n}\n\nexport function RoutePropGetters1() {\n return ;\n}\n\n\nfunction RoutePropGetters1VariantFeature() {\n const lanes = [\n { name: \"Ready\", records: [\"Brief\", \"Owner\"] },\n { name: \"Watching\", records: [\"Dependency\"] },\n { name: \"Resolved\", records: [\"Archive\", \"Receipt\"] },\n ];\n return (\n
\n

Variant board

Work moves through explicit lanes.

3 lanes
\n
\n {lanes.map((lane) =>

{lane.name}

    {lane.records.map((record) =>
  • {record}
    • )}
)}\n
\n
\n );\n}\n\n\nfunction RoutePropGetters1VariantAlgorithm() {\n const sources = [{ label: \"Brief\", weight: 4 }, { label: \"Evidence\", weight: 3 }, { label: \"Decision\", weight: 5 }];\n const total = sources.reduce((sum, source) => sum + source.weight, 0);\n return

Weighted sources

{total} points

    {sources.map((source) =>
  • {source.label}{source.weight}
    • )}
;\n}\n\n\nfunction RoutePropGetters1PatternLens() {\n const [note, setNote] = useState(\"\");\n const [entries, setEntries] = useState([]);\n function addNote(event: React.FormEvent) { event.preventDefault(); const value = note.trim(); if (value) { setEntries((current) => [value, ...current]); setNote(\"\"); } }\n return
    {entries.map((entry) =>
  • {entry}
    • )}
;\n}\n```"}]} {"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Debug a React implementation for practice lessons in a language-learning coach app. The interaction works only with a mouse and state leaks between views. Replace the fragile approach with persistent preference hook and explain the important fix briefly."},{"role":"assistant","content":"This version applies persistent preference hook to a real a language-learning coach app workflow, while the plum pink palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { useEffect } from \"react\";\n\nfunction useStoredBoolean(key: string, fallback: boolean) {\n const [value, setValue] = useState(() => window.localStorage.getItem(key) === null ? fallback : window.localStorage.getItem(key) === \"true\");\n useEffect(() => { window.localStorage.setItem(key, String(value)); }, [key, value]);\n return [value, setValue] as const;\n}\n\nfunction LessonLocalStorage1Core() {\n const [compact, setCompact] = useStoredBoolean(\"compact-1\", false);\n return

Practice lessons

A preference that survives a refresh.

Persist the tiny local concern, not the whole application state.

;\n}\n\n\nfunction LessonLocalStorage1Signature() {\n return (\n \n );\n}\n\n\n\n\nfunction LessonLocalStorage1Page({ children }: { children: React.ReactNode }) {\n return

Editorial workspace

A deliberate single-column reading rhythm.

v1
{children}
Built as an isolated React pattern example.
;\n}\n\nexport function LessonLocalStorage1() {\n return ;\n}\n\n\nfunction LessonLocalStorage1VariantFeature() {\n const lanes = [\n { name: \"Ready\", records: [\"Brief\", \"Owner\"] },\n { name: \"Watching\", records: [\"Dependency\"] },\n { name: \"Resolved\", records: [\"Archive\", \"Receipt\"] },\n ];\n return (\n
\n

Variant board

Work moves through explicit lanes.

3 lanes
\n
\n {lanes.map((lane) =>

{lane.name}

    {lane.records.map((record) =>
  • {record}
    • )}
)}\n
\n
\n );\n}\n\n\nfunction LessonLocalStorage1VariantAlgorithm() {\n const sources = [{ label: \"Brief\", weight: 4 }, { label: \"Evidence\", weight: 3 }, { label: \"Decision\", weight: 5 }];\n const total = sources.reduce((sum, source) => sum + source.weight, 0);\n return

Weighted sources

{total} points

    {sources.map((source) =>
  • {source.label}{source.weight}
    • )}
;\n}\n\n\nfunction LessonLocalStorage1PatternLens() {\n const [selected, setSelected] = useState(\"scope\");\n const panels = { scope: \"Name the smallest useful outcome.\", owner: \"Make the next decision visible.\", evidence: \"Keep supporting context close.\" };\n return
{Object.keys(panels).map((key) => )}

{panels[selected as keyof typeof panels]}

;\n}\n```"}]} {"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Explain when to use debounced search hook in a craft brewery operations panel, then show a compact production-minded component for brew batches in a craft brewery operations panel."},{"role":"assistant","content":"This version applies debounced search hook to a real a craft brewery operations panel workflow, while the obsidian amber palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { useEffect } from \"react\";\n\nfunction useDebouncedValue(value: T, delay = 250) {\n const [debounced, setDebounced] = useState(value);\n useEffect(() => { const timer = window.setTimeout(() => setDebounced(value), delay); return () => window.clearTimeout(timer); }, [value, delay]);\n return debounced;\n}\n\nfunction BatchDebounced1Core() {\n const [query, setQuery] = useState(\"\");\n const debouncedQuery = useDebouncedValue(query);\n const records = [\"Northstar\", \"Juniper\", \"Solace\", \"Harbor\"].filter((name) => name.toLowerCase().includes(debouncedQuery.toLowerCase()));\n return

Brew batches

Search input stays immediate; results settle gently.

    {records.map((record) =>
  • {record}
    • )}
;\n}\n\n\nfunction BatchDebounced1Signature() {\n return (\n \n );\n}\n\n\n\n\nfunction BatchDebounced1Page({ children }: { children: React.ReactNode }) {\n return

Editorial workspace

A deliberate single-column reading rhythm.

v1
{children}
Built as an isolated React pattern example.
;\n}\n\nexport function BatchDebounced1() {\n return ;\n}\n\n\nfunction BatchDebounced1VariantFeature() {\n const lanes = [\n { name: \"Ready\", records: [\"Brief\", \"Owner\"] },\n { name: \"Watching\", records: [\"Dependency\"] },\n { name: \"Resolved\", records: [\"Archive\", \"Receipt\"] },\n ];\n return (\n
\n

Variant board

Work moves through explicit lanes.

3 lanes
\n
\n {lanes.map((lane) =>

{lane.name}

    {lane.records.map((record) =>
  • {record}
    • )}
)}\n
\n
\n );\n}\n\n\nfunction BatchDebounced1VariantAlgorithm() {\n const sources = [{ label: \"Brief\", weight: 4 }, { label: \"Evidence\", weight: 3 }, { label: \"Decision\", weight: 5 }];\n const total = sources.reduce((sum, source) => sum + source.weight, 0);\n return

Weighted sources

{total} points

    {sources.map((source) =>
  • {source.label}{source.weight}
    • )}
;\n}\n\n\nfunction BatchDebounced1PatternLens() {\n const lanes = [{ title: \"Now\", items: [\"Clarify\", \"Assign\"] }, { title: \"Next\", items: [\"Review\"] }];\n return
{lanes.map((lane) =>

{lane.title}

    {lane.items.map((item) =>
  • {item}
    • )}
)}
;\n}\n```"}]} {"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Turn this UI brief into React: a focused control surface for station readings in a coastal weather research app, with a clear hierarchy, strong focus states, and async task lifecycle hook. Prefer a non-generic layout."},{"role":"assistant","content":"This version applies async task lifecycle hook to a real a coastal weather research app workflow, while the deep indigo palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { useCallback } from \"react\";\n\ntype TaskState = { status: \"idle\" | \"pending\" | \"success\" | \"error\"; data?: T; error?: string };\nfunction useAsyncTask(task: () => Promise) {\n const [state, setState] = useState>({ status: \"idle\" });\n const run = useCallback(async () => { setState({ status: \"pending\" }); try { setState({ status: \"success\", data: await task() }); } catch { setState({ status: \"error\", error: \"Try again in a moment.\" }); } }, [task]);\n return { ...state, run };\n}\n\nfunction ReadingAsyncTask1Core() {\n const task = useAsyncTask(async () => { await new Promise((resolve) => window.setTimeout(resolve, 350)); return \"Synced\"; });\n return

Station readings

Async state has a small, explicit lifecycle.

{task.error ?? task.data ?? \"Ready when you are.\"}

;\n}\n\n\nfunction ReadingAsyncTask1Signature() {\n return (\n \n );\n}\n\n\n\n\nfunction ReadingAsyncTask1Page({ children }: { children: React.ReactNode }) {\n return

Editorial workspace

A deliberate single-column reading rhythm.

v1
{children}
Built as an isolated React pattern example.
;\n}\n\nexport function ReadingAsyncTask1() {\n return ;\n}\n\n\nfunction ReadingAsyncTask1VariantFeature() {\n const lanes = [\n { name: \"Ready\", records: [\"Brief\", \"Owner\"] },\n { name: \"Watching\", records: [\"Dependency\"] },\n { name: \"Resolved\", records: [\"Archive\", \"Receipt\"] },\n ];\n return (\n
\n

Variant board

Work moves through explicit lanes.

3 lanes
\n
\n {lanes.map((lane) =>

{lane.name}

    {lane.records.map((record) =>
  • {record}
    • )}
)}\n
\n
\n );\n}\n\n\nfunction ReadingAsyncTask1VariantAlgorithm() {\n const sources = [{ label: \"Brief\", weight: 4 }, { label: \"Evidence\", weight: 3 }, { label: \"Decision\", weight: 5 }];\n const total = sources.reduce((sum, source) => sum + source.weight, 0);\n return

Weighted sources

{total} points

    {sources.map((source) =>
  • {source.label}{source.weight}
    • )}
;\n}\n\n\nfunction ReadingAsyncTask1PatternLens() {\n const checkpoints = [\"Scope\", \"Owner\", \"Evidence\"];\n return

Pattern checklist

    {checkpoints.map((checkpoint, index) =>
  1. {index + 1}{checkpoint}
    2. )}
;\n}\n```"}]} {"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"I keep coupling rendering and behavior in guest arrivals in a boutique hotel operations console. Refactor this sketch using cursor pagination hook: function Screen() { return ; }. Show the improved implementation."},{"role":"assistant","content":"This version applies cursor pagination hook to a real a boutique hotel operations console workflow, while the charcoal yellow palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nfunction useCursorPages(all: T[], pageSize = 3) {\n const [page, setPage] = useState(0);\n const slice = all.slice(page * pageSize, page * pageSize + pageSize);\n return { slice, canGoBack: page > 0, canGoForward: (page + 1) * pageSize < all.length, next: () => setPage((value) => value + 1), previous: () => setPage((value) => Math.max(0, value - 1)) };\n}\n\nfunction StayPagination1Core() {\n const page = useCursorPages([\"Morning review\", \"Vendor note\", \"Priority hold\", \"Client reply\", \"Final check\", \"Archive\"]);\n return

Guest arrivals

Cursor state stays beside the slice.

    {page.slice.map((entry) =>
  • {entry}
    • )}
;\n}\n\n\nfunction StayPagination1Signature() {\n return (\n \n );\n}\n\n\n\n\nfunction StayPagination1Page({ children }: { children: React.ReactNode }) {\n return

Editorial workspace

A deliberate single-column reading rhythm.

v1
{children}
Built as an isolated React pattern example.
;\n}\n\nexport function StayPagination1() {\n return ;\n}\n\n\nfunction StayPagination1VariantFeature() {\n const lanes = [\n { name: \"Ready\", records: [\"Brief\", \"Owner\"] },\n { name: \"Watching\", records: [\"Dependency\"] },\n { name: \"Resolved\", records: [\"Archive\", \"Receipt\"] },\n ];\n return (\n
\n

Variant board

Work moves through explicit lanes.

3 lanes
\n
\n {lanes.map((lane) =>

{lane.name}

    {lane.records.map((record) =>
  • {record}
    • )}
)}\n
\n
\n );\n}\n\n\nfunction StayPagination1VariantAlgorithm() {\n const sources = [{ label: \"Brief\", weight: 4 }, { label: \"Evidence\", weight: 3 }, { label: \"Decision\", weight: 5 }];\n const total = sources.reduce((sum, source) => sum + source.weight, 0);\n return

Weighted sources

{total} points

    {sources.map((source) =>
  • {source.label}{source.weight}
    • )}
;\n}\n\n\nfunction StayPagination1PatternLens() {\n const rows = [{ label: \"Clarity\", value: \"High\" }, { label: \"Risk\", value: \"Low\" }, { label: \"Owner\", value: \"Named\" }];\n return
{rows.map((row) => )}
Pattern readout
{row.label}{row.value}
;\n}\n```"}]} {"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Build a TypeScript React example for pet patients in a veterinary care portal. Use the media-query hook pattern, keep the API reusable, and give the UI a distinctive dark, editorial treatment."},{"role":"assistant","content":"This version applies media-query hook to a real a veterinary care portal workflow, while the midnight cyan palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { useEffect } from \"react\";\n\nfunction useMediaQuery(query: string) {\n const [matches, setMatches] = useState(() => window.matchMedia(query).matches);\n useEffect(() => { const media = window.matchMedia(query); const update = () => setMatches(media.matches); update(); media.addEventListener(\"change\", update); return () => media.removeEventListener(\"change\", update); }, [query]);\n return matches;\n}\n\nfunction PatientMediaQuery1Core() {\n const wide = useMediaQuery(\"(min-width: 768px)\");\n return

Pet patients

Behavior can respond to the viewport too.

Current layout mode: {wide ? \"wide comparison\" : \"stacked focus\"}.

Primary work surface
;\n}\n\n\nfunction PatientMediaQuery1Signature() {\n return (\n \n );\n}\n\n\n\n\nfunction PatientMediaQuery1Page({ children }: { children: React.ReactNode }) {\n return

Editorial workspace

A deliberate single-column reading rhythm.

v1
{children}
Built as an isolated React pattern example.
;\n}\n\nexport function PatientMediaQuery1() {\n return ;\n}\n\n\nfunction PatientMediaQuery1VariantFeature() {\n const lanes = [\n { name: \"Ready\", records: [\"Brief\", \"Owner\"] },\n { name: \"Watching\", records: [\"Dependency\"] },\n { name: \"Resolved\", records: [\"Archive\", \"Receipt\"] },\n ];\n return (\n
\n

Variant board

Work moves through explicit lanes.

3 lanes
\n
\n {lanes.map((lane) =>

{lane.name}

    {lane.records.map((record) =>
  • {record}
    • )}
)}\n
\n
\n );\n}\n\n\nfunction PatientMediaQuery1VariantAlgorithm() {\n const sources = [{ label: \"Brief\", weight: 4 }, { label: \"Evidence\", weight: 3 }, { label: \"Decision\", weight: 5 }];\n const total = sources.reduce((sum, source) => sum + source.weight, 0);\n return

Weighted sources

{total} points

    {sources.map((source) =>
  • {source.label}{source.weight}
    • )}
;\n}\n\n\nfunction PatientMediaQuery1PatternLens() {\n const signals = [{ label: \"Coverage\", value: 76 }, { label: \"Confidence\", value: 88 }, { label: \"Readiness\", value: 64 }];\n const average = Math.round(signals.reduce((total, signal) => total + signal.value, 0) / signals.length);\n return

Evidence mix

{average}%
{signals.map((signal) =>
{signal.label}
{signal.value}%
)}
;\n}\n```"}]} {"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Debug a React implementation for savings goals in a personal finance coaching app. The interaction works only with a mouse and state leaks between views. Replace the fragile approach with click-outside hook and explain the important fix briefly."},{"role":"assistant","content":"This version applies click-outside hook to a real a personal finance coaching app workflow, while the forest lime palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { useEffect, useRef } from \"react\";\n\nfunction useClickOutside(onOutside: () => void) {\n const ref = useRef(null);\n useEffect(() => { const handle = (event: MouseEvent) => { if (ref.current && !ref.current.contains(event.target as Node)) onOutside(); }; document.addEventListener(\"mousedown\", handle); return () => document.removeEventListener(\"mousedown\", handle); }, [onOutside]);\n return ref;\n}\n\nfunction GoalClickOutside1Core() {\n const [open, setOpen] = useState(false);\n const menuRef = useClickOutside(() => setOpen(false));\n return

Savings goals

A dismissible command menu.

{open &&
}
;\n}\n\n\nfunction GoalClickOutside1Signature() {\n return (\n \n );\n}\n\n\n\n\nfunction GoalClickOutside1Page({ children }: { children: React.ReactNode }) {\n return

Editorial workspace

A deliberate single-column reading rhythm.

v1
{children}
Built as an isolated React pattern example.
;\n}\n\nexport function GoalClickOutside1() {\n return ;\n}\n\n\nfunction GoalClickOutside1VariantFeature() {\n const lanes = [\n { name: \"Ready\", records: [\"Brief\", \"Owner\"] },\n { name: \"Watching\", records: [\"Dependency\"] },\n { name: \"Resolved\", records: [\"Archive\", \"Receipt\"] },\n ];\n return (\n
\n

Variant board

Work moves through explicit lanes.

3 lanes
\n
\n {lanes.map((lane) =>

{lane.name}

    {lane.records.map((record) =>
  • {record}
    • )}
)}\n
\n
\n );\n}\n\n\nfunction GoalClickOutside1VariantAlgorithm() {\n const sources = [{ label: \"Brief\", weight: 4 }, { label: \"Evidence\", weight: 3 }, { label: \"Decision\", weight: 5 }];\n const total = sources.reduce((sum, source) => sum + source.weight, 0);\n return

Weighted sources

{total} points

    {sources.map((source) =>
  • {source.label}{source.weight}
    • )}
;\n}\n\n\nfunction GoalClickOutside1PatternLens() {\n const points = [18, 43, 35, 68, 82];\n return
Signal trajectory
Five checkpoints
index * 55 + \",\" + (100 - point)).join(\" \")} />{points.map((point, index) => )}
;\n}\n```"}]} {"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Explain when to use keyboard shortcut hook in a physiotherapy progress app, then show a compact production-minded component for recovery plans in a physiotherapy progress app."},{"role":"assistant","content":"This version applies keyboard shortcut hook to a real a physiotherapy progress app workflow, while the ocean teal palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { useEffect } from \"react\";\n\nfunction useShortcut(key: string, handler: () => void) {\n useEffect(() => { const onKeyDown = (event: KeyboardEvent) => { if ((event.metaKey || event.ctrlKey) && event.key.toLowerCase() === key) { event.preventDefault(); handler(); } }; window.addEventListener(\"keydown\", onKeyDown); return () => window.removeEventListener(\"keydown\", onKeyDown); }, [key, handler]);\n}\n\nfunction PlanKeyboardShortcut1Core() {\n const [saved, setSaved] = useState(false);\n useShortcut(\"s\", () => setSaved(true));\n return

Recovery plans

Power users get a visible, discoverable shortcut.

Press Ctrl or Cmd + S to save this review.

⌘ S
;\n}\n\n\nfunction PlanKeyboardShortcut1Signature() {\n return (\n \n );\n}\n\n\n\n\nfunction PlanKeyboardShortcut1Page({ children }: { children: React.ReactNode }) {\n return

Editorial workspace

A deliberate single-column reading rhythm.

v1
{children}
Built as an isolated React pattern example.
;\n}\n\nexport function PlanKeyboardShortcut1() {\n return ;\n}\n\n\nfunction PlanKeyboardShortcut1VariantFeature() {\n const lanes = [\n { name: \"Ready\", records: [\"Brief\", \"Owner\"] },\n { name: \"Watching\", records: [\"Dependency\"] },\n { name: \"Resolved\", records: [\"Archive\", \"Receipt\"] },\n ];\n return (\n
\n

Variant board

Work moves through explicit lanes.

3 lanes
\n
\n {lanes.map((lane) =>

{lane.name}

    {lane.records.map((record) =>
  • {record}
    • )}
)}\n
\n
\n );\n}\n\n\nfunction PlanKeyboardShortcut1VariantAlgorithm() {\n const sources = [{ label: \"Brief\", weight: 4 }, { label: \"Evidence\", weight: 3 }, { label: \"Decision\", weight: 5 }];\n const total = sources.reduce((sum, source) => sum + source.weight, 0);\n return

Weighted sources

{total} points

    {sources.map((source) =>
  • {source.label}{source.weight}
    • )}
;\n}\n\n\nfunction PlanKeyboardShortcut1PatternLens() {\n const [open, setOpen] = useState(false);\n return
setOpen(event.currentTarget.open)}>Why this boundary matters

Keep behavior near the decision it serves, while letting the surrounding page stay easy to scan and test.

;\n}\n```"}]} {"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer. Produce correct, maintainable React code with semantic HTML, keyboard access, resilient state boundaries, and visually polished UI rather than generic default components."},{"role":"user","content":"Turn this UI brief into React: a focused control surface for site inspections in a solar installer field app, with a clear hierarchy, strong focus states, and draft autosave hook. Prefer a non-generic layout."},{"role":"assistant","content":"This version applies draft autosave hook to a real a solar installer field app workflow, while the lagoon emerald palette keeps the hierarchy intentional rather than generic. The code keeps the interaction boundary small and exposes accessible semantics where they matter.\n\n```tsx\nimport { useState } from \"react\";\n\nimport { useEffect } from \"react\";\n\nfunction useDraft(key: string, initial: string) {\n const [draft, setDraft] = useState(() => window.sessionStorage.getItem(key) ?? initial);\n useEffect(() => { window.sessionStorage.setItem(key, draft); }, [key, draft]);\n return [draft, setDraft] as const;\n}\n\nfunction InspectionDraft1Core() {\n const [note, setNote] = useDraft(\"draft-1\", \"\");\n return

Site inspections

Drafts recover after an accidental navigation.