diff --git a/scripts/lib/ghidra-installation-inspection.d.mts b/scripts/lib/ghidra-installation-inspection.d.mts
new file mode 100644
index 000000000..18e2c1bac
--- /dev/null
+++ b/scripts/lib/ghidra-installation-inspection.d.mts
@@ -0,0 +1,11 @@
+import type {
+  GhidraInstallationHost,
+  GhidraInstallationInspection,
+  GhidraInstallationOptions,
+} from "../../src/ghidra/GhidraInstallation.js";
+
+/** Inspect prerequisites with a real owner, including cleanup before completion. */
+export function inspectVerifierGhidraInstallation(
+  options: Omit<GhidraInstallationOptions, "resourceOwner">,
+  host?: GhidraInstallationHost,
+): Promise<GhidraInstallationInspection>;
diff --git a/scripts/lib/ghidra-installation-inspection.mjs b/scripts/lib/ghidra-installation-inspection.mjs
new file mode 100644
index 000000000..ad0b0bf62
--- /dev/null
+++ b/scripts/lib/ghidra-installation-inspection.mjs
@@ -0,0 +1,28 @@
+import { ArtifactResourceScope } from "../../dist/artifacts/ArtifactResourceScope.js";
+import { AnalysisCleanupLease } from "../../dist/artifacts/AnalysisCleanupLease.js";
+import { inspectGhidraInstallation } from "../../dist/ghidra/GhidraInstallation.js";
+import { closeVerifierResources } from "./verifier-cleanup.mjs";
+
+/** Complete one prerequisite inspection and release its exact retained owners. */
+export async function inspectVerifierGhidraInstallation(options, host) {
+  const resources = new ArtifactResourceScope();
+  const resourceOwner = {
+    retain(owner, resource) {
+      resources.retain({
+        kind: "lease",
+        resource,
+        lease: AnalysisCleanupLease.forCloseOwner(owner, resource),
+      });
+    },
+    run: (operation) => resources.run(operation),
+  };
+  let primaryError;
+  try {
+    return await inspectGhidraInstallation({ ...options, resourceOwner }, host);
+  } catch (cause) {
+    primaryError = cause;
+    throw cause;
+  } finally {
+    await closeVerifierResources([() => resources.close()], primaryError);
+  }
+}
diff --git a/scripts/lib/real-ghidra-namespace-annotations.mjs b/scripts/lib/real-ghidra-namespace-annotations.mjs
index c65c02e87..6966e77ad 100644
--- a/scripts/lib/real-ghidra-namespace-annotations.mjs
+++ b/scripts/lib/real-ghidra-namespace-annotations.mjs
@@ -7,7 +7,7 @@ import { tmpdir } from "node:os";
 import { basename, dirname, join } from "node:path";
 import { fileURLToPath } from "node:url";
 import { promisify } from "node:util";
-import { inspectGhidraInstallation } from "../../dist/ghidra/GhidraInstallation.js";
+import { inspectVerifierGhidraInstallation } from "./ghidra-installation-inspection.mjs";
 
 /** Exercise qualified annotation names against real demangled C++ ABI symbols. */
 export async function verifyGhidraNamespaceAnnotations({
@@ -353,8 +353,8 @@ async function verifyAddressNames(call, symbols, kind) {
 }
 
 async function requireNamespaceDemangler(env) {
-  const inspection = inspectGhidraInstallation({
-    environment: process.env,
+  const inspection = await inspectVerifierGhidraInstallation({
+    environment: env,
     installDir: env.GHIDRA_INSTALL_DIR,
     ...(env.JAVA_HOME === undefined ? {} : { javaHome: env.JAVA_HOME }),
   });
diff --git a/scripts/verify-real-ghidra-com.mjs b/scripts/verify-real-ghidra-com.mjs
index 5fabc1b8b..8a82331d8 100644
--- a/scripts/verify-real-ghidra-com.mjs
+++ b/scripts/verify-real-ghidra-com.mjs
@@ -12,7 +12,7 @@ import { Client } from "@modelcontextprotocol/client";
 import { StdioClientTransport } from "@modelcontextprotocol/client/stdio";
 import { parseEvidence } from "../dist/domain/evidence.js";
 import { functionDossierSchema } from "../dist/domain/hopperValues.js";
-import { inspectGhidraInstallation } from "../dist/ghidra/GhidraInstallation.js";
+import { inspectVerifierGhidraInstallation } from "./lib/ghidra-installation-inspection.mjs";
 import { buildDosComFixture } from "../tests/conformance/ghidra/dos-com-fixture.mjs";
 import { createVerifierRun, completeVerifierRun } from "./lib/verifier-run.mjs";
 import { verifyGhidraAddressBoundaries } from "./lib/real-ghidra-address-boundaries.mjs";
@@ -28,7 +28,7 @@ if (process.env.GHIDRA_INSTALL_DIR === undefined)
   throw new Error(
     "verify:ghidra:com prerequisite missing: GHIDRA_INSTALL_DIR (bring your own Ghidra).",
   );
-const installation = inspectGhidraInstallation({
+const installation = await inspectVerifierGhidraInstallation({
   environment: process.env,
   installDir: process.env.GHIDRA_INSTALL_DIR,
   ...(process.env.JAVA_HOME === undefined
diff --git a/scripts/verify-real-ghidra-dos.mjs b/scripts/verify-real-ghidra-dos.mjs
index b212a018d..6743e518d 100644
--- a/scripts/verify-real-ghidra-dos.mjs
+++ b/scripts/verify-real-ghidra-dos.mjs
@@ -22,7 +22,7 @@ import {
   functionBodySchema,
   functionDossierSchema,
 } from "../dist/domain/hopperValues.js";
-import { inspectGhidraInstallation } from "../dist/ghidra/GhidraInstallation.js";
+import { inspectVerifierGhidraInstallation } from "./lib/ghidra-installation-inspection.mjs";
 import { buildDosMzFixture } from "../tests/conformance/ghidra/dos-mz-fixture.mjs";
 import {
   assertVerifierCleanupComplete,
@@ -42,7 +42,7 @@ if (process.env.GHIDRA_INSTALL_DIR === undefined)
   throw new Error(
     "verify:ghidra:dos prerequisite missing: GHIDRA_INSTALL_DIR (bring your own Ghidra).",
   );
-const installation = inspectGhidraInstallation({
+const installation = await inspectVerifierGhidraInstallation({
   environment: process.env,
   installDir: process.env.GHIDRA_INSTALL_DIR,
   ...(process.env.JAVA_HOME === undefined
diff --git a/scripts/verify-real-ghidra-mips-relocatable.mjs b/scripts/verify-real-ghidra-mips-relocatable.mjs
index 700b93b8d..5ce1704e2 100755
--- a/scripts/verify-real-ghidra-mips-relocatable.mjs
+++ b/scripts/verify-real-ghidra-mips-relocatable.mjs
@@ -13,7 +13,7 @@ import { parseBinaryTarget } from "../dist/application/BinaryTargetResolver.js";
 import { parseEvidence } from "../dist/domain/evidence.js";
 import { parseAnalysisSnapshot } from "../dist/domain/analysisSnapshot.js";
 import { functionDossierSchema } from "../dist/domain/hopperValues.js";
-import { inspectGhidraInstallation } from "../dist/ghidra/GhidraInstallation.js";
+import { inspectVerifierGhidraInstallation } from "./lib/ghidra-installation-inspection.mjs";
 import { buildMipsRelocatableFixture } from "../tests/conformance/ghidra/mips-fixture.mjs";
 import {
   assertMipsRelocations,
@@ -34,7 +34,7 @@ if (!["linux", "darwin"].includes(process.platform))
   );
 if (process.env.GHIDRA_INSTALL_DIR === undefined)
   throw new Error("Missing prerequisite: caller-supplied GHIDRA_INSTALL_DIR");
-const installation = inspectGhidraInstallation({
+const installation = await inspectVerifierGhidraInstallation({
   environment: process.env,
   installDir: process.env.GHIDRA_INSTALL_DIR,
   ...(process.env.JAVA_HOME === undefined
diff --git a/scripts/verify-real-ghidra-mips.mjs b/scripts/verify-real-ghidra-mips.mjs
index 350ee3b90..2edecf4f5 100644
--- a/scripts/verify-real-ghidra-mips.mjs
+++ b/scripts/verify-real-ghidra-mips.mjs
@@ -22,7 +22,7 @@ import {
 import { parseEvidence } from "../dist/domain/evidence.js";
 import { parseAnalysisSnapshot } from "../dist/domain/analysisSnapshot.js";
 import { functionDossierSchema } from "../dist/domain/hopperValues.js";
-import { inspectGhidraInstallation } from "../dist/ghidra/GhidraInstallation.js";
+import { inspectVerifierGhidraInstallation } from "./lib/ghidra-installation-inspection.mjs";
 import { buildMipsFixture } from "../tests/conformance/ghidra/mips-fixture.mjs";
 import {
   buildPspFixture,
@@ -50,7 +50,7 @@ if (!["linux", "darwin"].includes(process.platform))
   );
 if (process.env.GHIDRA_INSTALL_DIR === undefined)
   throw new Error("Missing prerequisite: caller-supplied GHIDRA_INSTALL_DIR");
-const installation = inspectGhidraInstallation({
+const installation = await inspectVerifierGhidraInstallation({
   environment: process.env,
   installDir: process.env.GHIDRA_INSTALL_DIR,
   ...(process.env.JAVA_HOME === undefined
diff --git a/scripts/verify-real-ghidra-noreturn.mjs b/scripts/verify-real-ghidra-noreturn.mjs
index 884bcadd9..95c354a98 100644
--- a/scripts/verify-real-ghidra-noreturn.mjs
+++ b/scripts/verify-real-ghidra-noreturn.mjs
@@ -10,7 +10,7 @@ import { promisify } from "node:util";
 import { parseBinaryTarget } from "../dist/application/BinaryTargetResolver.js";
 import { parseConfig } from "../dist/config/parseConfig.js";
 import { GhidraClient } from "../dist/ghidra/GhidraClient.js";
-import { inspectGhidraInstallation } from "../dist/ghidra/GhidraInstallation.js";
+import { inspectVerifierGhidraInstallation } from "./lib/ghidra-installation-inspection.mjs";
 import { SUPPORTED_GHIDRA_VERSION } from "../dist/ghidra/GhidraReleasePolicy.js";
 import { GhidraProvider } from "../dist/ghidra/GhidraProvider.js";
 import { silentLogger } from "../dist/logger.js";
@@ -35,7 +35,7 @@ assert.ok(
 );
 const config = parseConfig(process.env);
 if (!config.ok) throw config.error;
-const installation = inspectGhidraInstallation({
+const installation = await inspectVerifierGhidraInstallation({
   environment: process.env,
   installDir: config.value.ghidraInstallDir,
   javaHome: config.value.ghidraJavaHome,
diff --git a/scripts/verify-real-ghidra-ppc.mjs b/scripts/verify-real-ghidra-ppc.mjs
index 591d32b2b..84313625d 100644
--- a/scripts/verify-real-ghidra-ppc.mjs
+++ b/scripts/verify-real-ghidra-ppc.mjs
@@ -19,7 +19,7 @@ import {
 import { parseEvidence } from "../dist/domain/evidence.js";
 import { parseAnalysisSnapshot } from "../dist/domain/analysisSnapshot.js";
 import { functionDossierSchema } from "../dist/domain/hopperValues.js";
-import { inspectGhidraInstallation } from "../dist/ghidra/GhidraInstallation.js";
+import { inspectVerifierGhidraInstallation } from "./lib/ghidra-installation-inspection.mjs";
 import { buildPowerPcFixture } from "../tests/conformance/ghidra/ppc-fixture.mjs";
 import { requireMcpOperationResult } from "./lib/mcp-verifier-results.mjs";
 import { createVerifierRun, completeVerifierRun } from "./lib/verifier-run.mjs";
@@ -33,7 +33,7 @@ if (!["linux", "darwin"].includes(process.platform))
   );
 if (process.env.GHIDRA_INSTALL_DIR === undefined)
   throw new Error("Missing prerequisite: caller-supplied GHIDRA_INSTALL_DIR");
-const installation = inspectGhidraInstallation({
+const installation = await inspectVerifierGhidraInstallation({
   environment: process.env,
   installDir: process.env.GHIDRA_INSTALL_DIR,
   ...(process.env.JAVA_HOME === undefined
diff --git a/scripts/verify-real-ghidra-raw.mjs b/scripts/verify-real-ghidra-raw.mjs
index 4341b5cfd..1db0f8cf9 100644
--- a/scripts/verify-real-ghidra-raw.mjs
+++ b/scripts/verify-real-ghidra-raw.mjs
@@ -11,7 +11,7 @@ import { Client } from "@modelcontextprotocol/client";
 import { StdioClientTransport } from "@modelcontextprotocol/client/stdio";
 
 import { parseEvidence } from "../dist/domain/evidence.js";
-import { inspectGhidraInstallation } from "../dist/ghidra/GhidraInstallation.js";
+import { inspectVerifierGhidraInstallation } from "./lib/ghidra-installation-inspection.mjs";
 import { requireMcpOperationResult } from "./lib/mcp-verifier-results.mjs";
 import { createVerifierRun, completeVerifierRun } from "./lib/verifier-run.mjs";
 
@@ -25,7 +25,7 @@ if (process.env.GHIDRA_INSTALL_DIR === undefined)
   throw new Error(
     "Set GHIDRA_INSTALL_DIR to a bring-your-own Ghidra installation.",
   );
-const installation = inspectGhidraInstallation({
+const installation = await inspectVerifierGhidraInstallation({
   environment: process.env,
   installDir: process.env.GHIDRA_INSTALL_DIR,
   ...(process.env.JAVA_HOME === undefined
diff --git a/scripts/verify-real-ghidra-riscv.mjs b/scripts/verify-real-ghidra-riscv.mjs
index a87adeeb5..b0c036b98 100644
--- a/scripts/verify-real-ghidra-riscv.mjs
+++ b/scripts/verify-real-ghidra-riscv.mjs
@@ -22,7 +22,7 @@ import { parseBinaryTarget } from "../dist/application/BinaryTargetResolver.js";
 import { parseAnalysisSnapshot } from "../dist/domain/analysisSnapshot.js";
 import { parseEvidence } from "../dist/domain/evidence.js";
 import { functionDossierSchema } from "../dist/domain/hopperValues.js";
-import { inspectGhidraInstallation } from "../dist/ghidra/GhidraInstallation.js";
+import { inspectVerifierGhidraInstallation } from "./lib/ghidra-installation-inspection.mjs";
 import { buildRiscvFixture } from "../tests/conformance/ghidra/riscv-fixture.mjs";
 import {
   mcpTextValue,
@@ -42,7 +42,7 @@ for (const key of ["REA_GHIDRA_LANGUAGE_ID", "REA_GHIDRA_COMPILER_SPEC_ID"])
     throw new Error(
       `Unset ${key}: this lane verifies provider-pinned selection.`,
     );
-const installation = inspectGhidraInstallation({
+const installation = await inspectVerifierGhidraInstallation({
   environment: process.env,
   installDir: process.env.GHIDRA_INSTALL_DIR,
   ...(process.env.JAVA_HOME === undefined
diff --git a/scripts/verify-real-ghidra-swift.mjs b/scripts/verify-real-ghidra-swift.mjs
index 5cdf04427..ecb823950 100644
--- a/scripts/verify-real-ghidra-swift.mjs
+++ b/scripts/verify-real-ghidra-swift.mjs
@@ -15,7 +15,7 @@ import { fileURLToPath } from "node:url";
 import { promisify } from "node:util";
 import { Client } from "@modelcontextprotocol/client";
 import { StdioClientTransport } from "@modelcontextprotocol/client/stdio";
-import { inspectGhidraInstallation } from "../dist/ghidra/GhidraInstallation.js";
+import { inspectVerifierGhidraInstallation } from "./lib/ghidra-installation-inspection.mjs";
 import { cleanupOwnedProcessGroup } from "../dist/process/ProcessOwnership.js";
 import {
   ProviderProcessSupervisor,
@@ -27,7 +27,7 @@ import { createVerifierRun, completeVerifierRun } from "./lib/verifier-run.mjs";
 
 const execute = promisify(execFile);
 const run = createVerifierRun();
-const installation = inspectGhidraInstallation({
+const installation = await inspectVerifierGhidraInstallation({
   environment: process.env,
   installDir: process.env.GHIDRA_INSTALL_DIR,
   javaHome: process.env.JAVA_HOME,
diff --git a/scripts/verify-real-ghidra-switch.mjs b/scripts/verify-real-ghidra-switch.mjs
index 624c14a42..5d43c2bc4 100644
--- a/scripts/verify-real-ghidra-switch.mjs
+++ b/scripts/verify-real-ghidra-switch.mjs
@@ -68,13 +68,13 @@ for (const [role, command] of Object.entries(commands)) {
 }
 let installation;
 if (!compilerOnly) {
-  const { inspectGhidraInstallation } =
-    await import("../dist/ghidra/GhidraInstallation.js");
+  const { inspectVerifierGhidraInstallation } =
+    await import("./lib/ghidra-installation-inspection.mjs");
   assert.ok(
     process.env.GHIDRA_INSTALL_DIR,
     "Ghidra switch lane prerequisite missing: GHIDRA_INSTALL_DIR (bring your own)",
   );
-  installation = inspectGhidraInstallation({
+  installation = await inspectVerifierGhidraInstallation({
     environment: process.env,
     installDir: process.env.GHIDRA_INSTALL_DIR,
     ...(process.env.JAVA_HOME === undefined
diff --git a/scripts/verify-real-ghidra-windows.mjs b/scripts/verify-real-ghidra-windows.mjs
index f34f32bfa..fa297fd71 100644
--- a/scripts/verify-real-ghidra-windows.mjs
+++ b/scripts/verify-real-ghidra-windows.mjs
@@ -18,7 +18,7 @@ import {
   parseGhidraInventoryInput,
   parseGhidraInventoryResult,
 } from "../dist/ghidra/GhidraInventoryValues.js";
-import { inspectGhidraInstallation } from "../dist/ghidra/GhidraInstallation.js";
+import { inspectVerifierGhidraInstallation } from "./lib/ghidra-installation-inspection.mjs";
 import { SUPPORTED_GHIDRA_VERSION } from "../dist/ghidra/GhidraReleasePolicy.js";
 import { GhidraHeadlessLauncher } from "../dist/ghidra/GhidraLauncher.js";
 import { GHIDRA_PROVIDER_IDENTITY } from "../dist/ghidra/GhidraProviderCapabilities.js";
@@ -59,7 +59,7 @@ if (installDir === undefined || !isAbsolute(installDir))
   throw new Error(
     "Set GHIDRA_INSTALL_DIR to the absolute root of Ghidra 12.1.4.",
   );
-const installation = inspectGhidraInstallation({
+const installation = await inspectVerifierGhidraInstallation({
   environment: process.env,
   installDir,
   ...(process.env.JAVA_HOME === undefined
diff --git a/scripts/verify-real-ghidra.mjs b/scripts/verify-real-ghidra.mjs
index 74c0197b2..612e4f9f1 100644
--- a/scripts/verify-real-ghidra.mjs
+++ b/scripts/verify-real-ghidra.mjs
@@ -10,7 +10,7 @@ import { promisify } from "node:util";
 import { parseBinaryTarget } from "../dist/application/BinaryTargetResolver.js";
 import { resolveGhidraAnalysisProfile } from "../dist/ghidra/GhidraAnalysisProfile.js";
 import { GhidraClient } from "../dist/ghidra/GhidraClient.js";
-import { inspectGhidraInstallation } from "../dist/ghidra/GhidraInstallation.js";
+import { inspectVerifierGhidraInstallation } from "./lib/ghidra-installation-inspection.mjs";
 import { SUPPORTED_GHIDRA_VERSION } from "../dist/ghidra/GhidraReleasePolicy.js";
 import { GhidraHeadlessLauncher } from "../dist/ghidra/GhidraLauncher.js";
 import { GHIDRA_PROVIDER_IDENTITY } from "../dist/ghidra/GhidraProviderCapabilities.js";
@@ -49,7 +49,7 @@ if (installDir === undefined || !isAbsolute(installDir))
   throw new Error(
     "Set GHIDRA_INSTALL_DIR to the absolute root of an extracted Ghidra 12.1.4 release.",
   );
-const installation = inspectGhidraInstallation({
+const installation = await inspectVerifierGhidraInstallation({
   environment: process.env,
   installDir,
   ...(process.env.JAVA_HOME === undefined
diff --git a/tests/boundary/process/verifierFileResources.test.ts b/tests/boundary/process/verifierFileResources.test.ts
index 366774bfb..a87824e27 100644
--- a/tests/boundary/process/verifierFileResources.test.ts
+++ b/tests/boundary/process/verifierFileResources.test.ts
@@ -1,9 +1,11 @@
 import { spawnSync } from "node:child_process";
 import { createHash } from "node:crypto";
-import { readFile, writeFile } from "node:fs/promises";
+import { readFile, readdir, writeFile } from "node:fs/promises";
 import { join } from "node:path";
 
 import { expect, it } from "vitest";
+import ts from "typescript6";
+import type { inspectVerifierGhidraInstallation } from "../../../scripts/lib/ghidra-installation-inspection.mjs";
 
 import { createTestTempDirectory } from "../../fixtures/temporaryDirectory.js";
 
@@ -84,3 +86,178 @@ it("hashes and closes a clean verifier input", async () => {
       .digest("hex"),
   });
 });
+
+it("Ghidra verifier probes await the shared owned inspection contract", async () => {
+  const names = (await readdir("scripts")).filter(
+    (name) => name.startsWith("verify-real-ghidra") && name.endsWith(".mjs"),
+  );
+  const paths = [
+    ...names.map((name) => `scripts/${name}`),
+    "scripts/lib/real-ghidra-namespace-annotations.mjs",
+  ];
+  const probes: string[] = [];
+  const violations: { path: string; reason: string }[] = [];
+  for (const path of paths) {
+    const source = ts.createSourceFile(
+      path,
+      await readFile(path, "utf8"),
+      ts.ScriptTarget.Latest,
+      true,
+      ts.ScriptKind.JS,
+    );
+    const visit = (node: ts.Node): void => {
+      if (
+        ts.isCallExpression(node) &&
+        ts.isIdentifier(node.expression) &&
+        [
+          "inspectGhidraInstallation",
+          "inspectVerifierGhidraInstallation",
+        ].includes(node.expression.text)
+      ) {
+        probes.push(path);
+        if (!ts.isAwaitExpression(node.parent))
+          violations.push({
+            path,
+            reason: "installation result was not awaited",
+          });
+        if (node.expression.text !== "inspectVerifierGhidraInstallation")
+          violations.push({
+            path,
+            reason: "inspection has no shared cleanup owner",
+          });
+      }
+      ts.forEachChild(node, visit);
+    };
+    visit(source);
+  }
+  expect(probes.length).toBeGreaterThan(0);
+  expect(violations).toEqual([]);
+});
+
+it.each(["late-close", "retry-close", "retained-close", "opaque-cancellation"])(
+  "owns Ghidra verifier prerequisite finalization: %s",
+  async (mode) => {
+    const root = await createTestTempDirectory("rea-verifier-ghidra-owner-");
+    const options = {
+      environment: {},
+      installDir: root,
+      platform: process.platform,
+      architecture: "x64",
+    } satisfies Parameters<typeof inspectVerifierGhidraInstallation>[0];
+    const script = String.raw`
+      import assert from 'node:assert/strict';
+      import { mkdir, open, writeFile } from 'node:fs/promises';
+      import { join } from 'node:path';
+      import { inspectVerifierGhidraInstallation } from ${JSON.stringify(new URL("../../../scripts/lib/ghidra-installation-inspection.mjs", import.meta.url).href)};
+      import { systemGhidraInstallationHost } from ${JSON.stringify(new URL("../../../dist/ghidra/GhidraInstallation.js", import.meta.url).href)};
+      import { SUPPORTED_GHIDRA_VERSION, SUPPORTED_GHIDRA_JAVA_MAJOR } from ${JSON.stringify(new URL("../../../dist/ghidra/GhidraReleasePolicy.js", import.meta.url).href)};
+      import { OwnedFileHandle } from ${JSON.stringify(new URL("../../../dist/filesystem/OwnedFileHandle.js", import.meta.url).href)};
+      import { RegularFileCleanupFailure } from ${JSON.stringify(new URL("../../../dist/filesystem/OwnedRegularFile.js", import.meta.url).href)};
+      import { ArtifactResourceRetryFailure } from ${JSON.stringify(new URL("../../../dist/artifacts/ArtifactResourceScope.js", import.meta.url).href)};
+      const root = process.argv[1], mode = process.argv[2], options = JSON.parse(process.argv[3]);
+      await mkdir(join(root, 'Ghidra'));
+      await writeFile(join(root, 'Ghidra', 'application.properties'), 'application.version=' + SUPPORTED_GHIDRA_VERSION + '\napplication.java.min=' + SUPPORTED_GHIDRA_JAVA_MAJOR + '\n');
+      const controller = new AbortController();
+      let foreign;
+      if (mode === 'opaque-cancellation') {
+        const path = join(root, 'foreign'); await writeFile(path, 'foreign');
+        foreign = new OwnedFileHandle(await open(path, 'r'));
+        controller.abort(new RegularFileCleanupFailure(path, foreign, { kind: 'completed', value: 'opaque' }, new Error('not this inspection owner')));
+      }
+      let entered, release;
+      const entering = new Promise(resolve => { entered = resolve; });
+      const finishing = new Promise(resolve => { release = resolve; });
+      const handles = new Set();
+      let attempts = 0, denied = true;
+      const originalClose = OwnedFileHandle.prototype.close;
+      OwnedFileHandle.prototype.close = async function () {
+        handles.add(this.handle); attempts++;
+        if (mode === 'late-close' && attempts === 1) { entered(); await finishing; }
+        if ((mode === 'retry-close' && attempts === 1) || (mode === 'retained-close' && denied)) throw new Error('controlled inspection close refusal');
+        return originalClose.call(this);
+      };
+      const host = {
+        ...systemGhidraInstallationHost(),
+        executable: () => true,
+        executableHeader: () => ({ ok: true, value: undefined }),
+        probeJava: async () => ({ ok: true, value: { major: SUPPORTED_GHIDRA_JAVA_MAJOR, version: '21.0.11', home: '/fixture/jdk', bits: 64, runtime: 'jdk', osArch: 'amd64', osName: options.platform === 'win32' ? 'Windows' : options.platform === 'darwin' ? 'Mac OS X' : 'Linux' } }),
+      };
+      let settled = false;
+      const pending = inspectVerifierGhidraInstallation({ ...options, signal: controller.signal }, host).then(
+        value => { settled = true; return { value }; },
+        error => { settled = true; return { error }; },
+      );
+      try {
+        if (mode === 'late-close') { await entering; assert.equal(settled, false); release(); }
+        const outcome = await pending;
+        if (mode === 'late-close') { assert.equal(outcome.value?.status, 'available'); assert.equal(handles.size, 1); }
+        else if (mode === 'retry-close') {
+          assert.ok(outcome.error); assert.equal(outcome.error.cleanupIncomplete, false);
+          assert.ok(attempts >= 2); assert.equal(handles.size, 1);
+        } else if (mode === 'retained-close') {
+          assert.ok(outcome.error instanceof AggregateError);
+          const primary = outcome.error.errors.find(error => error.cleanupIncomplete === true);
+          const cleanup = outcome.error.errors.find(error => error instanceof ArtifactResourceRetryFailure);
+          assert.ok(primary); assert.ok(cleanup); assert.ok(cleanup.cleanupLeases.length > 0);
+          denied = false;
+          for (const lease of cleanup.cleanupLeases) await lease.release();
+          assert.equal(primary.cleanupIncomplete, false);
+          assert.equal(handles.size, 1);
+        } else {
+          assert.equal(outcome.error?._tag, 'AnalysisCancelledError');
+          assert.equal(outcome.error.cause, controller.signal.reason);
+          assert.equal(handles.size, 0); assert.ok(foreign.handle.fd >= 0);
+        }
+        for (const handle of handles) assert.equal(handle.fd, -1);
+        console.log(JSON.stringify({ mode, verified: true }));
+      } finally {
+        denied = false; release();
+        await pending;
+        OwnedFileHandle.prototype.close = originalClose;
+        for (const handle of handles) await handle.close();
+        await foreign?.close();
+      }
+    `;
+    const result = spawnSync(
+      process.execPath,
+      [
+        "--input-type=module",
+        "-e",
+        script,
+        root,
+        mode,
+        JSON.stringify(options),
+      ],
+      { encoding: "utf8", timeout: 10_000 },
+    );
+    expect(result.status, `${result.stdout}\n${result.stderr}`).toBe(0);
+    expect(JSON.parse(result.stdout.trim())).toEqual({ mode, verified: true });
+  },
+);
+
+it("Ghidra verifier awaits native prerequisite rejection before creating target fixtures", async () => {
+  const root = await createTestTempDirectory(
+    "rea-verifier-ghidra-prerequisite-",
+  );
+  const result = spawnSync(
+    process.execPath,
+    ["scripts/verify-real-ghidra.mjs"],
+    {
+      encoding: "utf8",
+      timeout: 10_000,
+      env: {
+        PATH: root,
+        HOME: root,
+        USERPROFILE: root,
+        GHIDRA_INSTALL_DIR: join(root, "absent-installation"),
+        JAVA_HOME: join(root, "absent-jdk"),
+      },
+    },
+  );
+  expect(result.status, result.stderr).toBe(1);
+  expect(result.stderr).toContain(
+    'Ghidra installation is unavailable: {"status":"unavailable"',
+  );
+  expect(result.stderr).not.toContain("TypeError");
+  expect(result.stderr).not.toContain("Ghidra installation is unavailable: {}");
+});