improvise-formula's comments carried three arguments worth keeping and
several restatements of the code. The arguments move to
context/code/formula-and-io.md (pipe quoting's one home, the keyword guard
and why PEG rule ordering is not a rule, the unquoted formula target, and
why a new grammar production needs generator coverage) and the bug
narratives to context/test-evidence/formula-and-io.md, keyed by test name.
No behaviour change: comments only.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Edward Langley
a5d240b0d4