Release 8.6.0: announce the /flow-reviewer deprecation

.agents/plans/11-reviewer-deprecation-release/README.md

@@ -0,0 +1,58 @@
+# Offline qualification for the 8.6.0 deprecation notice
+
+The operator explicitly authorized a provider-free qualification path for this
+release on 2026-09-15, after being shown that the alternatives were a funded live
+campaign or holding the release. This path covers only 8.6.0 and
+reviewer-command-deprecation-v1. It does not establish live model behavior and is
+not a reusable exemption.
+
+## Why this release exists
+
+`docs/release-qualification.md` requires a surface that is going away to be
+announced in one release and removed no earlier than the next major. The
+`/flow-reviewer` deprecation landed on main in #82 but no published version
+carried it, so 9.0.0 could not remove the command without stranding anyone
+upgrading straight from 8.5.0. This release is that announcement.
+
+It is the third consecutive offline release, which the operator accepted
+knowingly. The exception was written for individually reviewed features, and a
+deprecation notice is a weaker claim on it than 8.4.0 or 8.5.0 were. Four
+releases now sit between the candidate and the last live measurement.
+
+## Frozen scope
+
+`scripts/feature-release.ts` pins commit 4c59cdd3d6a0065f3fc79fabc5e19df3f9004c80,
+which holds the final package manifest, README pins and changelog. The frozen
+file list is the same one 8.5.0 froze: only the reviewed commit advances, because
+this release changes no picker source except one palette title.
+
+Every enumerated picker and planning source, server configuration adapter, prompt
+surface, flow-plan and flow-run guide, package manifest and build/type surface
+must match that commit's Git blob and regular-file mode exactly. Other
+differences from the fully measured 8.3.0 source must satisfy the existing patch
+tooling/documentation allowance.
+
+## Baseline and assurance
+
+The baseline is 8.3.0, the last release with a live multi-provider campaign and
+canary. It is deliberately not 8.4.0 or 8.5.0. `OFFLINE_FEATURE_BASELINE` holds
+that invariant and the tests assert no authorized feature names it.
+
+The retained 8.5.0 seal could not be reused: the grader closure covers
+`package.json`, so the version bump alone invalidated it. The same original
+8.3.0 campaign and canary were regraded offline into this plan's baselines
+directory, with no model calls. That retains existing evidence and produces no
+new measurement.
+
+Candidate assurance is reviewed frozen code, full deterministic checks, all
+retained gated replays, package checks, and the provider-free OpenCode smoke.
+None of these measure planning quality or coding outcomes. Generated release
+notes state that no candidate live model eval or canary ran, and that no release
+after 8.3.0 has been measured live.
+
+## What this unblocks
+
+9.0.0 may now remove `/flow-reviewer`, the `flow.reviewer.select` command and the
+`opencode-plugin-flow.reviewer-picker` module id. See
+[10-reviewer-command-deprecation](../10-reviewer-command-deprecation/README.md)
+for the exact deletions.