fix(review): the coordinator and orchestrator texts say what the code does on refutation and the brief-conflict exception

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

agents/review-coordinator.md

@@ -136,8 +136,9 @@ Succinctness and Actionability read the finding's *packaging*; neither
 examines the claim, so neither can establish the finding is unreal. Accuracy
 does: a citation that escapes the repo root, or a negative line, refutes the
 finding as a claim about this codebase. A line past the end of the file does
-not: the citation is wrong, the claim is unchecked. A line number alone never
-refutes a finding, so it goes to `unverified` (`accuracy:line-out-of-range`).
+not: the citation is wrong, the claim is unchecked. Any other line number alone
+never refutes the finding, so a line past the end of the file sends it to
+`unverified` (`accuracy:line-out-of-range`).
 
 **No finding is struck for length** (ordre 5). Before review_version 1.1 an
 over-long `detail` sent a finding to `unverified`, and S118's most serious

agents/review-orchestrator.md

@@ -54,8 +54,8 @@ You will receive a prompt containing:
   contract that bounds review scope.
 - **Mode** — `default`, `quick`, `validate`, or `dry-run`.
   - `default` — run the full pipeline.
-  - `quick` — skip the coordinator's reasonableness filter; use single
-    reviewer (code-correctness only) for faster turnaround.
+  - `quick` — skip the coordinator's reasonableness filter except the
+    brief-conflict rule; use single reviewer (code-correctness only) for faster turnaround.
   - `validate` — schema-only check on existing review.md, no LLM calls.
   - `dry-run` — print the discovered scope and triage map; skip writes.
 - **Since-ref** (optional) — explicit `--since <ref>` override for the SHA
@@ -191,6 +191,9 @@ The coordinator runs a 4-pass process:
    `RULE_CATALOGUE` (`unknown-rule_key`) or whose file cannot be checked
    (`file-existence:indeterminate`) to `unverified`, which forbids `ALLOW`;
    reset a severity that does not match its catalogue tier.
+   The one exception to the reset is the brief-conflict lowering: a
+   `/code-review` finding marked `contradicts_brief`, at the MAJOR tier and
+   at severity MAJOR, drops to MINOR with `brief_lowered_from: MAJOR`.
    Skipped at high effort, as in `quick` mode (below); at high effort an
    unknown `rule_key` is normalized to `PLAN_EXECUTE_DRIFT` instead
    (`agents/review-coordinator.md`, "High-effort normalization"); the