Readiness scanner: feature inventory extractor — every COBOL/CICS/SQL feature, data type and option an estate uses, with program counts #4723

What. From an estate's sources (plus JCL and bind cards where present), produce a structured inventory of what the estate uses, each with how many and which programs use it:

• statement forms;
• data types and PICTURE features (P-scaling, COMP-1/2, national, edited);
• CICS commands and options;
• SQL forms (static/dynamic, cursors, WHENEVER, …);
• intrinsic functions;
• compile options (from CBL/PROCESS cards and JCL PARM);
• copybook resolution gaps.

Builds on: the engine scan, cics_census (CICS/SQL command counts), det source.py / layout.py / stmt.py parsing, and fact_crosscheck.

Acceptance.

• A deterministic JSON inventory with a schema.
• Run on all burned estates and committed as fixtures.
• Unknown or unparsed constructs are counted explicitly, not dropped.

Part of the estate readiness scanner epic (linked from the epic). Owner-approved direction, 2026-10-08.

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