Filter and stably sort CSV or JSON rows with exact rules

Apply an optional exact-equality filter and/or a stable text sort to one table. Provide Rules as JSON, for example {"filter":{"column":"status","equals":"paid"},"sort":{"column":"name","direction":"asc"}}. Only these two operations are supported. Equality is type-aware and case-sensitive; missing keys never match. Sorting requires string values in every retained row and uses case-sensitive Unicode order, not numeric or date order. No SQL, expressions, regex or fuzzy matching. Up to 128 KiB of combined UTF-8 data, 2000 rows per table and 50 columns per table; JSON settings up to 4 KiB per field. CSV needs unique non-empty headers and consistent row widths. JSON must be an array of flat objects with finite scalar values. Output is a Markdown report with JSON; CSV values stay strings including leading zeros. No external calls or execution of supplied text. Two in-scope correction rounds. AI-assisted service operated by Ilya using deterministic Python. Submit only non-sensitive data.