diff --git a/phase-ends/CURRENT_PHASE.md b/phase-ends/CURRENT_PHASE.md
index d5afdb4..b345743 100644
--- a/phase-ends/CURRENT_PHASE.md
+++ b/phase-ends/CURRENT_PHASE.md
@@ -767,3 +767,24 @@ makes the team structure work.
   P9-T8 phase-close docs.
 - Next: coordinator-facing phase-close — cookbook/conventions/verification
   records, negatives index extraction, clean gate review.
+
+## Cycle 4 closure — B's final synthesis (the three traps are one class)
+
+- The encoding traps (`lui` high halves, name-keyed gp markers,
+  literal-vs-symbol addresses) are ONE class with ONE detection habit:
+  when the instruction COUNT is already right and the residual is 1-8
+  bytes, compare the ENCODING not the mnemonic — the mnemonic is
+  identical in every case, only the operand encoding differs. To be
+  placed ABOVE the three cookbook entries in P9-T8.
+
+## Phase 9 status at coordinator review (context ~87%)
+
+- **400 distinct bodies / 409 regions** — P9-T6 checkpoint met on the
+  coordinator's gate. All gates green; SHA-1 stable; queue reconciled
+  (excluded_recorded_negative=115); workers rotated cleanly (A, B, C).
+- Remaining plan tasks: P9-T7 (500-body headroom), P9-T8 (cookbook /
+  conventions / verification records / negatives index extraction /
+  README / milestone confirmation request).
+- Coordinator context near the practical wall; the ledger + documented
+  merge flow are complete for a replacement coordinator if the close
+  documentation exceeds remaining budget.