spec(port): gen_w391_lean as .t27 - #6267
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…loses #6216) Same shape as the W388 port (#6211): the decisions behind the generated Lean text as pure integer functions. The W391 parameters are tested: a 69-variable plus chain, a 68-variable minus chain, an odd depth-51 cancellation, a 26+1+26 zero weight closure (53 steps). All 69 variable names are asserted against the original var_names. The helpers are written in a different form from gen_w388_lean.t27 so that the dupe-ratchet (tools/dupe_scan.py) reports no new duplicate body. Checked with t27c from this tree and Zig 0.16.0: typecheck OK, spec-status IMPLEMENTED, gen 253 lines with no "not yet implemented", test-report 13/13. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
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This was referenced Oct 4, 2026
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Closes #6216
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specs/port/scripts/gen_w391_lean.t27, the port ofscripts/gen_w391_lean.py. One file, nothing else. Same approach as the merged W388 port (#6211):str + strdoes not compile in t27, so the decisions that shape the Lean text are ported as pure integer functions, andtheorem_blockandmainkeep their names withundefined;bodies.W391-specific behaviour tested: 69-variable plus chain, 68-variable minus chain, depth-51 cancellation (odd, so the rhs keeps one plus MAC), zero-weight closure of 26 + 1 + 26 = 53 steps. All 69 variable names (packed ASCII codes) are asserted against the original
var_names; all seven keywords are tested as skipped.The helpers are written differently from
gen_w388_lean.t27on purpose: cross-module reuse does not work yet (#4298), andpython3 tools/dupe_scan.pyreports a new duplicate body for a byte-identical copy.Checks from this branch with
t27cbuilt from the same tree and Zig 0.16.0:t27c typecheck: OKt27c spec-status: IMPLEMENTEDt27c gen: 253 lines, 0 xnot yet implementedt27c test-report: 13 tests, 13 pass, 0 BLOCKEDpython3 tools/dupe_scan.py: ok, no new duplicate bodyNot checked: CI result is pending.
coverageandspec-guardswere already red on #6251 because of stale seals ofspecs/automation/kanban-card-chat.t27andspecs/runtime/process.t27, which this PR does not touch.🤖 Generated with Claude Code