fix(verifiers): preserve results and own cleanup through completion

Attempt independent resource cleanup without losing primary failures, retain unresolved owners, and publish completion after release. Bound existing producer commands, preserve helper return values, and settle startup and fixture children on failure.

Validation: 29 focused boundary tests passed; actual helper-value and import-bound filesystem cleanup controls passed. The real inert-child termination control and targeted JavaScript binding checks passed, alongside typecheck, lint and formatting. Live Ghidra, Cutter, Electron GUI and Windows addon qualification was not run.

scripts/verify/javascript/recovery.mjs

@@ -1,4 +1,8 @@
 #!/usr/bin/env node
+import {
+  closeVerifierResources,
+  withVerifierCleanup,
+} from "../../lib/verifier-cleanup.mjs";
 import assert from "node:assert/strict";
 import { execFile } from "node:child_process";
 import { createHash } from "node:crypto";
@@ -51,7 +55,7 @@ const call = async (name, args) => {
 const fingerprint = (bytes) => createHash("sha256").update(bytes).digest("hex");
 const counts = [];
 let finalReport;
-try {
+await withVerifierCleanup(async () => {
   const fixtures = await buildRecoveryFixtures(
     root,
     process.env.REA_JAVASCRIPT_FIXTURE_TOOLS,
@@ -165,11 +169,15 @@ try {
     results: counts,
     verified: true,
   };
-} finally {
-  await client.close();
-  await transport.close();
-  await rm(root, { recursive: true, force: true });
-}
+}, [
+  async () => {
+    await closeVerifierResources([
+      () => client.close(),
+      () => transport.close(),
+    ]);
+    await rm(root, { recursive: true, force: true });
+  },
+]);
 console.log(JSON.stringify(finalReport));
 
 async function assertRecoveredArtifacts(evidence, result, fixture) {