skill(rosetta-language-sweep): efficiency lessons from the cobol sweep (#2567) - #11
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…p (#2567) Five instruments the second sweep proved out, inlined where they're used: - bucket 2: the overlap-cost check is one grep against the language's other rules (CALL/ENTRY/INVOKE all in api killed cobol's args authoring idea) - bucket 3: run the authoring test EMPIRICALLY via a scratch git-init + --db-only scan; file-level totals count rule MATCHES, not per-function derived counts (13-name USING still records struct_args 1) - bucket 3: comment_lines = sum(total_loc - coding_loc), blanks count; the classification test is one blank+comment grep vs morphology siblings - Phase 4: the "anything else moving is a red flag" rule has a known benign cause (stale bias_data cache vs engine main) -- attribute movers by which DB columns the change can feed, don't re-scan in circles - Phase 5: workflow_dispatch of rosetta-audit on main after the pin bump = cheap end-to-end proof the loop closed Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01BsVATdyMPhUoAUNBKbMUVi
This was referenced Sep 1, 2026
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Summary
Folds the cobol sweep's (gitgalaxy#2567) five efficiency lessons into the skill, inlined at the
point of use rather than as an appendix:
(
CALL/ENTRY/INVOKEall sitting in cobol'sapirule killed the args authoring ideain minutes; same decision shape as jcl's
DISP=).--db-onlyscan, read the column. Documents the engine fact that file-level signal totalscount rule matches, not per-function derived counts (a 13-name
PROCEDURE DIVISION USINGstill recordsstruct_args1).comment_linesis Σ(total_loc − coding_loc), so blank lines count; thebucket-1-vs-3 test is one blank+comment grep against morphology siblings.
stale
bias_data.jsoncache vs engine main (the #2618 case). Attribute movers by which DBcolumns the change feeds instead of re-scanning.
workflow_dispatchofrosetta-audit.ymlon gitgalaxy main after theKEYWORD_ROSETTA_REFbump as the end-to-end closing proof.Skill/docs-only; no
data/diff, so CI runs all 46 gates — expected green (engine main has#2622, manifests re-baselined by #10).
Cross-repo
all merged; no ordering constraints for this PR.
🤖 Generated with Claude Code
https://claude.ai/code/session_01BsVATdyMPhUoAUNBKbMUVi