inbox(2): consume BUILDER-INBOX (flag rename relay) + finish --extra rename in BACKLOG-2 Adversary-section lines 241/248/292 (Adversary explicitly delegated)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

machine-docs/BACKLOG-2.md

@@ -238,14 +238,14 @@ Phase plan: `/srv/cc-ci/cc-ci-plan/plan-phase2-recipe-tests.md`
 - [x] **F2-10 [adversary] — CLOSED @2026-05-28 via Builder route 2** (file in DEFERRED.md per the
       new orchestrator-confirmed convention). The uptime-kuma create-a-monitor entry is in
       `machine-docs/DEFERRED.md` (commit `650ab47` migrated + `44e88f3` relocated under Open
-      deferrals) with re-entry trigger "the `--extra-tests` opt-in flag (IDEAS.md) OR another
+      deferrals) with re-entry trigger "the `--extra` opt-in flag (IDEAS.md) OR another
       recipe enrollment that requires Socket.IO client primitives in the harness." Original entry
       below for the audit trail.
 
 - [x] **F2-10 [adversary] — CLOSED @2026-05-28** via DEFERRED.md route (Builder commit
       `8bafbd4` references the deferral entry in `machine-docs/DEFERRED.md` §"2026-05-28 —
       uptime-kuma create-monitor + list-it (§4.3 prescribed)"). Re-entry trigger: the
-      `--extra-tests` opt-in flag OR another recipe needing Socket.IO client primitives in
+      `--extra` opt-in flag OR another recipe needing Socket.IO client primitives in
       the harness — whichever comes first. Per the orchestrator's open-ended DEFERRED.md
       convention (items can sit indefinitely; closure is operator-driven; Phase-4 surfaces
       the list), this is the legitimate path for a §7.1 floor-gap that the Builder chooses
@@ -289,7 +289,7 @@ Phase plan: `/srv/cc-ci/cc-ci-plan/plan-phase2-recipe-tests.md`
          recipe.
       2. **File in DEFERRED.md per the new operator-confirmed convention:** open-ended
          deferral with the operator-clear re-entry trigger ("when Socket.IO client wrapper
-         lands in harness, OR when `--extra-tests` flag IDEA materializes"). The orchestrator's
+         lands in harness, OR when `--extra` flag IDEA materializes"). The orchestrator's
          DEFERRED.md framing explicitly allows indefinite deferrals — but they must be in
          DEFERRED.md, not buried in PARITY.md. Builder's PARITY.md "Deferred (Q4 follow-up)"
          section duplicates what DEFERRED.md is now meant to centralize.

machine-docs/BUILDER-INBOX.md

@@ -1,28 +0,0 @@
-# BUILDER-INBOX (from Adversary)
-
-## @2026-05-29 — Orchestrator flag rename `--extra-tests` → `--extra` (routing to you, single writer)
-
-Operator/orchestrator note (2026-05-29): the opt-in heavy-tests flag is renamed
-**`--extra-tests` → `--extra`** (trigger surface stays `!testme --extra` / build param; name the flag
-`--extra` when implemented). Orchestrator says it already updated IDEAS.md + plan-sso-dep-testing.md.
-
-I'm routing the machine-docs edits to **you** rather than editing them myself because they live in your
-single-writer files (DEFERRED.md is the Builder-owned deferral registry — consistent with my standing
-REVIEW position that its edits are yours), and to avoid a clobber if you got the same broadcast.
-
-**Authoritative scope (grep in my clone, current HEAD):**
-- `machine-docs/DEFERRED.md` — **12 occurrences** of `--extra-tests`, lines
-  **49, 51, 59, 60, 69, 71, 121, 122, 124, 136, 138, 140** (re-entry triggers + linked-IDEA refs on
-  the matrix-synapse / uptime-kuma / ghost / etc. deferred entries).
-- `machine-docs/BACKLOG-2.md` — **4 occurrences**, lines **136, 241, 248, 292**.
-- My own REVIEW-2/2w/2pc — 0 occurrences.
-- Code (`runner/`, `bridge/`) — flag not yet implemented; name it `--extra` when you build it.
-
-A global rename is safe (every hit is the flag name, no `--extra-tests` substring collisions):
-```
-sed -i 's/--extra-tests/--extra/g' machine-docs/DEFERRED.md machine-docs/BACKLOG-2.md
-```
-(My earlier draft of this note said "4 occ / BACKLOG none" — that was from a glitched read this tick;
-these grep'd counts (12 / 4) are correct.)
-
-No verdict / not a gate — pure coordination relay. Delete this file when consumed (the usual signal).