{
  "schemaVersion": 1,
  "slug": "anchored-strip-snap-through",
  "ownerPath": "/templates/anchored-strip-snap-through",
  "semanticKey": "smooth bowed strip crosses its endpoint chord and remains in the opposite bowed state after pad withdrawal",
  "demand": {
    "type": "independent-product-lookup-value",
    "historicalExactQuery": null,
    "exactSearchVolume": null,
    "rationale": "Describe one change between two bowed poses while both endpoints stay in place. The distinguishing ending is an inverted arch that remains after the pressing pad withdraws. This is an authored visual target; the drawing alone cannot prove that a real strip would be bistable.",
    "status": "author-proposed; independent admission pending"
  },
  "input": "first-frame.png",
  "inputRoles": {
    "first-frame": "one authored PNG",
    "last-frame": null,
    "guide": "review only; do not upload"
  },
  "constraints": [
    "Both endpoint pins stay fixed and the strip stays attached to them.",
    "The coral midpoint crosses from above to below the endpoint line.",
    "The transition keeps one smooth connected strip without new discrete hinges or tears.",
    "The pad presses vertically and later visibly separates from the strip.",
    "After separation, the strip remains bowed downward for the ending hold.",
    "The same midpoint mark and two endpoints remain identifiable; no replacement strip appears."
  ],
  "steps": [
    "Locate both endpoints, then compare the midpoint height with their shared horizontal line. A replacement image needs clear open space below, otherwise inversion would collide with the floor or disappear out of frame.",
    "Request a single downward press through the endpoint line, followed by pad withdrawal. State the intended opposite arch after release rather than a return to the original bow.",
    "Review the connected strip before crossing, while crossing and after the pad has separated. A lower pose held down by the pad does not yet establish the requested released ending."
  ],
  "nearestOwners": [
    "/templates/sponge-compress-release-shape",
    "/templates/accordion-paper-crease-collapse"
  ],
  "substantiveDifference": "The sponge returns approximately to its original outline after release; accordion paper closes existing panel hinges. This task uses no discrete hinges and ends in the opposite smooth arch after external contact is removed. The endpoint-line crossing and released hold are distinct acceptance events.",
  "modelExecution": {
    "performed": false,
    "taskId": null,
    "result": null,
    "paidCalls": 0
  },
  "sourceType": "original-local-deterministic-illustration",
  "rights": "Original authored geometry and prose; no third-party media. Independent review pending."
}