docs: backfill no-print decision - #17
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Record the standing rule that source never calls print() — CLI output uses sys.stdout.write / sys.stderr.write with an explicit newline — as a planning decision, with context, rationale, and a revisit trigger. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Keep the live directive in CLAUDE.md but single-source the rationale and scope in the decision file, so the two can't drift. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Backfills the standing no
print()in source rule as a planning decision, now thatplanning/decisions/exists (convention adopted in #15).planning/decisions/2026-06-26-no-print-in-source.mdrecords:print(); CLI output goes throughsys.stdout.write/sys.stderr.writewith an explicit\n.write→print()swap that prompted the rule, and the two options weighed.writeis preferred (visible stream + terminator), and thatprint()is still fine in tests/scratch/REPL.Links to
architecture/cli.md, where theFixing <file>line is emitted.Verification
just check-planning→planning: OK; the decision shows up injust index.just lint-cipasses.🤖 Generated with Claude Code