pr-merge-with-post-merge-cleanup — 2026-05-16

Summary

PR #45 (wave-17, R-Dash main) merged via squash with 3-commit post-merge cleanup: ruff F401 unused MFAService import (1a213fb), ruff format on 3 files (521d4d6), mypy bytes annotation on snowflake driver (f95a6ef). Two GHA CI failures traced via gh run view —log-failed before each fix. Stale local branch chore/v1.4.0-version-cascade handled with content-equivalence check (not blind delete) — found work already in main, deleted with reflog backup. Final main CI 3/3 GREEN on f95a6ef. Repo now single-branch. Universal Completion Gate decision 0292db2c @ 0.94.