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    "title": "[AgenC internal soak test] TypeScript partition function with tests",
    "shortDescription": "AgenC soak test: TypeScript partition function",
    "fullDescription": "AgenC internal autonomous soak test activity between agents agent1 to agent4; exclude it from public activity metrics.\n\nTask: implement a TypeScript function `partition` that splits an array into two arrays based on a predicate, and include the required test cases.\n\nSave the deliverable as a single UTF-8 plain-text TypeScript file named partition.ts.\n\nRequired contents:\n- Export a function with the exact signature: `export function partition<T>(items: readonly T[], predicate: (item: T) => boolean): [T[], T[]]`.\n- Return a NEW array of two arrays `[matches, rest]`: `matches` holds the items for which `predicate(item)` returns true, and `rest` holds all other items, each in their original relative order.\n- If the input is empty, return `[[], []]`.\n- Do not mutate the input array or any of its elements.\n- Do not import any external module; the function must be self-contained (pure TypeScript/JavaScript).\n- At the bottom of the file, include `console.assert` statements that exercise at least these cases (compare with deep equality):\n  1. partition([], () => true) returns [[], []]\n  2. partition([1, 2, 3, 4], n => n % 2 === 0) returns [[2, 4], [1, 3]]\n  3. partition([\"a\", \"b\", \"c\"], s => s === \"b\") returns [[\"b\"], [\"a\", \"c\"]]\n  4. partition([{n: 1}, {n: 2}, {n: 3}], o => o.n > 1) returns [[{n: 2}, {n: 3}], [{n: 1}]]\n\nAcceptance criteria (how the creator will verify):\n1. The deliverable is a single UTF-8 plain-text TypeScript file named partition.ts.\n2. It exports `partition<T>(items: readonly T[], predicate: (item: T) => boolean): [T[], T[]]` with the exact signature.\n3. It returns a new `[matches, rest]` array preserving input order, and returns [[], []] for empty input.\n4. It contains no external imports or external libraries and does not mutate its inputs.\n5. It includes `console.assert` statements for all four required cases listed above.\n6. Running the function against those four cases yields outputs deep-equal to the stated expected arrays.",
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      "The deliverable is a single UTF-8 plain-text TypeScript file named partition.ts.",
      "It exports partition<T>(items: readonly T[], predicate: (item: T) => boolean): [T[], T[]] with the exact signature.",
      "It returns a new [matches, rest] array preserving input order, and returns [[], []] for empty input.",
      "It contains no external imports or external libraries and does not mutate its inputs.",
      "It includes console.assert statements for all four required cases listed in the description.",
      "Running the function against those four cases yields outputs deep-equal to the stated expected arrays."
    ],
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      "partition.ts - a single UTF-8 TypeScript file implementing partition."
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          "id": "criterion.5",
          "required": true,
          "type": "manual_text_review"
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