wip: check-pnpm-flag-spellings gate

Claude-Session: https://claude.ai/code/session_local_00307fb7-db7a-4ba8-84c3-65a062e8a14d
Co-authored-by: Claude <noreply@anthropic.com>

Author: hotlong

.github/workflows/lint.yml

@@ -4057,6 +4057,12 @@ jobs:
         continue-on-error: true
         run: pnpm check:agent-test-spelling
 
+      # Rationale: `scripts/check-pnpm-flag-spellings.mjs` header (#23777).
+      - name: No committed pnpm call spells a flag the pnpm 11 frontend rejects
+        id: no-committed-pnpm-call-spells-a-rejected-flag
+        continue-on-error: true
+        run: pnpm check:pnpm-flag-spellings
+
       # Every `<pkg>#<task>` override in turbo.json must name a package the
       # workspace HAS and a script that package RUNS (#12046).
       #

package.json

@@ -109,6 +109,7 @@
     "check:single-claim-paths": "node scripts/check-single-claim-paths.mjs --self-test",
     "check:closing-target-claim": "node scripts/check-closing-target-claim.mjs --self-test",
     "check:pnpm-filter-targets": "node scripts/pnpm-filter-targets.mjs --self-test && node scripts/check-pnpm-filter-targets.mjs --self-test && node scripts/check-pnpm-filter-targets.mjs",
+    "check:pnpm-flag-spellings": "node scripts/check-pnpm-flag-spellings.mjs --self-test && node scripts/check-pnpm-flag-spellings.mjs",
     "check:turbo-task-graph": "node scripts/check-turbo-task-graph.mjs --self-test && node scripts/check-turbo-task-graph.mjs",
     "check:workspace-manifest-cycles": "node scripts/check-workspace-manifest-cycles.mjs --self-test && node scripts/check-workspace-manifest-cycles.mjs",
     "check:adr-anchors": "node scripts/check-adr-anchors.mjs --self-test && node scripts/check-adr-anchors.mjs",