diff --git a/ai-mcp-pmm-controller b/ai-mcp-pmm-controller
index 3e3f55f..cb92278 160000
--- a/ai-mcp-pmm-controller
+++ b/ai-mcp-pmm-controller
@@ -1 +1 @@
-Subproject commit 3e3f55fe79e3740b318ce7e6fe21e938c93fa723
+Subproject commit cb92278affeb2958924355ec018fefc757d29058
diff --git a/docs/00-meta/SUBMODULE_HYGIENE.md b/docs/00-meta/SUBMODULE_HYGIENE.md
index 7b8d338..9b1cd8e 100644
--- a/docs/00-meta/SUBMODULE_HYGIENE.md
+++ b/docs/00-meta/SUBMODULE_HYGIENE.md
@@ -31,7 +31,7 @@ Stricter than `git status -sb` (fails on any porcelain output). Use after large
 
 ### Surgical artifact cleanup (generated files only)
 
-Some submodules historically tracked **build output** (TypeScript `.js` next to `.ts` under `packages/*/src`, or Foundry `artifacts/`). That noise is removed with **gitignore + `git rm --cached`**, not by discarding real source edits.
+Some submodules historically tracked **build output** (TypeScript `.js` next to `.ts` under `packages/*/src`, Foundry `artifacts/`, or root `metamask-integration/dist/` from `tsc`). That noise is removed with **gitignore + `git rm --cached`**, not by discarding real source edits.
 
 - Repeatable helper (idempotent): `bash scripts/maintenance/surgical-clean-submodule-artifacts.sh [--dry-run]`
 - After it reports changes, **commit inside the submodule**, then bump the **parent** submodule pointer.
diff --git a/metamask-integration b/metamask-integration
index 2b26a31..c55eedf 160000
--- a/metamask-integration
+++ b/metamask-integration
@@ -1 +1 @@
-Subproject commit 2b26a315ff695a9bc21211fb47d881bc083fd488
+Subproject commit c55eedf3f15b988f1a5b82d5e3a6ff5d9deb75b7
diff --git a/scripts/maintenance/surgical-clean-submodule-artifacts.sh b/scripts/maintenance/surgical-clean-submodule-artifacts.sh
index dc32404..c4f886f 100755
--- a/scripts/maintenance/surgical-clean-submodule-artifacts.sh
+++ b/scripts/maintenance/surgical-clean-submodule-artifacts.sh
@@ -3,8 +3,9 @@
 # Does not discard intentional source edits (.ts, .go, .md WIP stays dirty until you commit/stash).
 #
 # Applies:
-#   the-order     — gitignore + untrack tsc emit under packages/*/src (outDir is dist/)
-#   smom-dbis-138 — gitignore + untrack Foundry artifacts/
+#   the-order            — gitignore + untrack tsc emit under packages/*/src (outDir is dist/)
+#   smom-dbis-138        — gitignore + untrack Foundry artifacts/
+#   metamask-integration — root .gitignore dist/ + git rm --cached dist/ (tsc outDir)
 #
 # Idempotent: safe to re-run after commits already landed (no-op if nothing tracked).
 #
@@ -74,12 +75,34 @@ clean_smom() {
   fi
 }
 
+clean_metamask_integration() {
+  local sub="$ROOT/metamask-integration"
+  [[ -d "$sub/.git" ]] || return 0
+  log "metamask-integration: ensure root .gitignore has dist/"
+  if ! $DRY && [[ -f "$sub/.gitignore" ]] && ! grep -qE '^dist/?$' "$sub/.gitignore" 2>/dev/null; then
+    log "  WARN: add dist/ to metamask-integration/.gitignore (tsc outDir)"
+  fi
+  local n
+  n=$(git -C "$sub" ls-files 2>/dev/null | grep -c '^dist/' || true)
+  if [[ "${n:-0}" -eq 0 ]]; then
+    log "metamask-integration: no tracked dist/ (OK)"
+    return 0
+  fi
+  if $DRY; then
+    log "metamask-integration: would git rm -r --cached dist/ ($n files)"
+    return 0
+  fi
+  log "metamask-integration: git rm -r --cached dist/ ($n files)"
+  git -C "$sub" rm -r -f --cached dist/ 2>/dev/null || true
+}
+
 if ! grep -q '^artifacts/' "$ROOT/smom-dbis-138/.gitignore" 2>/dev/null; then
   log "WARN: smom-dbis-138/.gitignore should contain 'artifacts/' (add before next commit)"
 fi
 
 clean_the_order
 clean_smom
+clean_metamask_integration
 
 log "Done. Run: bash scripts/verify/submodules-clean.sh"
 log "Other submodules with only source/config edits need manual commit or stash (not touched here)."