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Exit Gate 0.27 — Compatibility Burn-In (Third Slice)

Deliverable Status
Triple-minor burn-in (v0_26/ fixtures; 0.25→0.26→0.27) Done
Protocol /1 freeze re-scoped to 0.28+ Done
Second-wave root removals (REM-RELIABILITY-ROOT + schema_drift + registry) Done
Wire matrix maintenance for v0_26/ Done
WP5 trust/docs residuals N/A — no release-blocking residuals beyond docs/version bump
Docs: What's New / Migration / this exit gate Done
Core + plugins bumped to 0.27.0 Done

Acceptance checklist

  • CI exercises 0.25 → 0.26 → 0.27 upgrade paths for etlantic.pipeline/1 and sibling burn-in artifacts (v0_26/ goldens + extended check scripts)
  • Plugin SDK /1 freeze decision — re-scoped to 0.28+ with owners (PROTOCOL_EVOLUTION.md)
  • REM-RELIABILITY-ROOT and schema_drift + registry demoted wave executed with migration notes (REMOVAL_CANDIDATES_0_37.md)
  • Wire schema ranges document the triple-minor window
  • What's New / Migration 0.26→0.27 / this exit gate pass docs gates
  • No wire-schema reset; control plane and GUI remain out of scope

Freeze blockers (carried to 0.28+)

  1. Document ≥1 external feedback cycle from a non-first-party plugin author (echo CI alone is insufficient per Exit Gate 0.22 freeze note).

Residual / follow-ons (0.28+)

  • Protocol /1 freeze closure — owned by Exit gate 0.28
  • Remaining demoted root aliases (sql, profile, lifecycle, …) — third wave in 0.28
  • Later 0.37 inventory items (REM-DATACONTRACTMODEL, experimental surfaces)

See also