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{"type":"item.completed","item":{"id":"item_0","type":"agent_message","text":"<requirement name=\"python-interpreter-architecture\" stories=\"architecture-foundation\">\nThe implementation language is Python, fixed by this Target's `TECHNOLOGY_STACK.md` and governed by `stack/python.md`.\n</requirement>\n<requirement name=\"jq-executable-interface\" stories=\"EXEC-001\">\nThe interface contract\n</requirement>\n<requirement name=\"process-exit-diagnostics\" stories=\"EXEC-002\">\nExit codes follow jq's own, and the distinction is load-bearing because the harness grades on it:\n</requirement>\n<requirement name=\"json-stream-io\" stories=\"EXEC-003\">\nIt writes each value the program produces to **stdout** as one compact JSON value per line, and exits `0`.\n</requirement>\n<requirement name=\"lexical-scanning\" stories=\"PARSE-001\">\nFollow `sources/lexer.l` and `sources/parser.y` directly. Produce an AST.\n</requirement>\n<requirement name=\"literals-strings-interpolation\" stories=\"PARSE-002\">\nPrecedence, `?` suffixes, string interpolation, and the `def` forms are all settled there.\n</requirement>\n<requirement name=\"filter-grammar\" stories=\"PARSE-003\">\njq is a small language with a large semantic core.\n</requirement>\n<requirement name=\"advanced-grammar-rejection\" stories=\"PARSE-004\">\nThe module *grammar* cases are **not** excluded and must pass.\n</requirement>\n<requirement name=\"generator-evaluation\" stories=\"CORE-001,CORE-002\">\nAlmost every filter is a **generator**:\nit takes one input and produces a stream of zero, one, or many outputs, and downstream\nfilters run once per upstream output.\n</requirement>\n<requirement name=\"runtime-errors-and-optional\" stories=\"CORE-003\">\nA case may legitimately emit several values and then raise; the harness compares the values\nproduced before the raise, so exit `5` is not by itself a failure.\n</requirement>\n<requirement name=\"truthiness-comparison\" stories=\"CORE-004\">\n`reduce`, `foreach`, `limit`, `first`,\n`label`/`break`, and the `?//` destructuring alternative are all defined in terms of it.\n</requirement>\n<requirement name=\"value-model-numbers\" stories=\"VALUE-001\">\nNumbers and edge cases. `nan`, `infinite`, integer/float equality, large literals,\nand the `have_decnum` builtin — return `false` from it and the corpus takes its\nnon-decNumber branch, which native floats satisfy.\n</requirement>\n<requirement name=\"value-accessors\" stories=\"VALUE-002\">\nfield access, iteration, arithmetic, comparison, and\n`empty`.\n</requirement>\n<requirement name=\"slices-and-iteration\" stories=\"VALUE-003\">\nGet the core correctly before reaching for coverage.\n</requirement>\n<requirement name=\"type-and-numeric-primitives\" stories=\"VALUE-004\">\nBuiltins. Work outward from `sources/builtin.jq` and the manual: strings, arrays, objects,\n</requirement>\n<requirement name=\"conformance-assets\" stories=\"CONF-001\">\nThese four files are the exam. They are hash-verified against the import and restored\nbefore grading, so a modification is reported as tampering rather than honoured:\n</requirement>\n<requirement name=\"arithmetic-structural-operators\" stories=\"FLOW-001\">\nEvery later feature is expressed in terms of this.\n</requirement>\n<requirement name=\"boolean-alternative-operators\" stories=\"FLOW-002\">\n`//`,\n`reduce`, `foreach`, `label`/`break`, `limit`, `first`, `last`, `until`, `while`,\n`recurse`.\n</requirement>\n<requirement name=\"conditionals-exception-flow\" stories=\"FLOW-003\">\nControl flow. `if`/`then`/`elif`/`else`/`end`, `try`/`catch` and `?`, `//`,\n</requirement>\n<requirement name=\"labels-breaks\" stories=\"FLOW-004\">\n`label`/`break`\n</requirement>\n<requirement name=\"reductions-iteration-control\" stories=\"FLOW-005\">\n`reduce`, `foreach`, `limit`, `first`, `last`, `until`, `while`,\n</requirement>\n<requirement name=\"recursive-generators\" stories=\"FLOW-006\">\n`recurse`.\n</requirement>\n<requirement name=\"variable-bindings\" stories=\"FUNC-001\">\nFunctions, variables, and destructuring.\n</requirement>\n<requirement name=\"function-parameters\" stories=\"FUNC-002\">\n`def` with arity and closures,\n</requirement>\n<requirement name=\"function-definitions\" stories=\"FUNC-003\">\n`def` with arity and closures, `as`\nbindings,\n</requirement>\n<requirement name=\"destructuring-alternatives\" stories=\"FUNC-004\">\nobject and array patterns, and the `?//` alternative operator.\n</requirement>\n<requirement name=\"path-discovery\" stories=\"PATH-001\">\nPaths and assignment. `path(f)`, getpath, setpath, delpaths, del,\n</requirement>\n<requirement name=\"path-primitives\" stories=\"PATH-002\">\n`path(f)`, `getpath`, `setpath`, `delpaths`, `del`,\n</requirement>\n<requirement name=\"assignment-operators\" stories=\"PATH-003\">\nand then `=`, `|=`, `+=`, and friends.\n</requirement>\n<requirement name=\"complex-assignments\" stories=\"PATH-004\">\nAssignment is defined over path expressions, so this\ncannot precede step 2.\n</requirement>\n<requirement name=\"collection-transformations\" stories=\"DATA-001\">\nBuiltins. Work outward from `sources/builtin.jq` and the manual: strings, arrays, objects,\n</requirement>\n<requirement name=\"sorting-grouping-extrema\" stories=\"DATA-002\">\n`sort_by`/`group_by`/`unique_by`,\n</requirement>\n<requirement name=\"object-entries-containment\" stories=\"DATA-003\">\nobjects,\n</requirement>\n<requirement name=\"index-membership-search\" stories=\"DATA-004\">\n`in`,\n</requirement>\n<requirement name=\"string-manipulation\" stories=\"TEXT-001\">\nstrings,\n</requirement>\n<requirement name=\"formats-serialization\" stories=\"TEXT-002\">\n`@base64`/`@uri`/`@csv`/`@tsv`/`@sh`\nformats,\n</requirement>\n<requirement name=\"regular-expressions\" stories=\"TEXT-003\">\nthe date functions, `tostream`, `input`/`inputs`, `$__loc__`, `debug`.\n</requirement>\n<requirement name=\"date-time-filters\" stories=\"TEXT-004\">\nthe date functions,\n</requirement>\n<requirement name=\"input-controls\" stories=\"IO-001\">\n`input`/`inputs`,\n</requirement>\n<requirement name=\"diagnostics-stderr\" stories=\"IO-002\">\n`$__loc__`, `debug`.\n</requirement>\n<requirement name=\"streaming-transformations\" stories=\"IO-003\">\n`tostream`,\n</requirement>\n<requirement name=\"scoped-conformance\" stories=\"CONF-002\">\nEvery other story runs its own slice, and the slice executes cases.\n</requirement>\n<requirement name=\"full-conformance\" stories=\"CONF-003\">\nDefinition of Done\n</requirement>"}}
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