diff --git a/src/browser/BrowserProcessStartup.ts b/scripts/lib/browser-process-startup.mts
similarity index 100%
rename from src/browser/BrowserProcessStartup.ts
rename to scripts/lib/browser-process-startup.mts
diff --git a/scripts/lib/browser-runtime-fixture-lifecycle.mjs b/scripts/lib/browser-runtime-fixture-lifecycle.mjs
index 3205e34112..3d85b15ec9 100644
--- a/scripts/lib/browser-runtime-fixture-lifecycle.mjs
+++ b/scripts/lib/browser-runtime-fixture-lifecycle.mjs
@@ -8,12 +8,16 @@ import { spawnOwnedProviderProcess } from "../../dist/process/ProviderProcess.js
 import { createSystemProcessOwnershipHost } from "../../dist/process/ProcessOwnershipObservation.js";
 import { liveProcesses } from "../../dist/process/ProcessOwnershipProcessTree.js";
 import { CdpConnection } from "../../dist/browser/CdpConnection.js";
-import {
-  BROWSER_DEVTOOLS_STARTUP_TIMEOUT_MS,
-  waitForBrowserDevtoolsPort,
-} from "../../dist/browser/BrowserProcessStartup.js";
+import { importVerifierSource } from "./verifier-source-loader.mjs";
+
 import { requireOrdinaryWindowsVerifierCaller } from "./windows-ordinary-user-verifier.mjs";
 
+const { BROWSER_DEVTOOLS_STARTUP_TIMEOUT_MS, waitForBrowserDevtoolsPort } =
+  await importVerifierSource(
+    new URL("./browser-process-startup.mts", import.meta.url).href,
+    import.meta.url,
+  );
+
 /** Launch the synthetic fixture browser and await CDP in its own verified process group. */
 export async function startRuntimeFixtureBrowser(executable, origin) {
   await requireOrdinaryWindowsVerifierCaller();
diff --git a/src/application/WindowsCapabilities.ts b/scripts/lib/windows-capabilities.mts
similarity index 97%
rename from src/application/WindowsCapabilities.ts
rename to scripts/lib/windows-capabilities.mts
index 61b96c40f8..d4acd5ff6e 100644
--- a/src/application/WindowsCapabilities.ts
+++ b/scripts/lib/windows-capabilities.mts
@@ -6,11 +6,11 @@ import { join } from "node:path";
 import {
   windowsNativeCapabilities,
   type WindowsNativeCapabilitySet,
-} from "../process/WindowsAuthority.js";
+} from "../../src/process/WindowsAuthority.js";
 import {
   probeProcessCaptureCapability,
   type ProcessCaptureCapability,
-} from "../process/capture/ProcessCaptureCapability.js";
+} from "../../src/process/capture/ProcessCaptureCapability.js";
 
 /** One named Windows host observation without inferred authority. */
 export type WindowsCapabilityOutcome =
diff --git a/scripts/verify-real-browser.mjs b/scripts/verify-real-browser.mjs
index 98c4be1935..e3fa15e819 100644
--- a/scripts/verify-real-browser.mjs
+++ b/scripts/verify-real-browser.mjs
@@ -9,10 +9,8 @@ import { join } from "node:path";
 import { fileURLToPath } from "node:url";
 
 import { CdpBrowserProvider } from "../dist/browser/CdpBrowserProvider.js";
-import {
-  BROWSER_DEVTOOLS_STARTUP_TIMEOUT_MS,
-  waitForBrowserDevtoolsPort,
-} from "../dist/browser/BrowserProcessStartup.js";
+import { importVerifierSource } from "./lib/verifier-source-loader.mjs";
+
 import { createBrowserScenarioProvider } from "../dist/composition/browserScenario.js";
 import {
   inspectWebPageInputSchema,
@@ -57,6 +55,12 @@ import { verifyScenarioStorageFingerprints } from "./lib/browser-scenario-storag
 import { verifyScenarioServiceWorkers } from "./lib/browser-scenario-service-workers-e2e.mjs";
 import { verifyBrowserUrlUserInfo } from "./lib/browser-url-userinfo-e2e.mjs";
 
+const { BROWSER_DEVTOOLS_STARTUP_TIMEOUT_MS, waitForBrowserDevtoolsPort } =
+  await importVerifierSource(
+    new URL("./lib/browser-process-startup.mts", import.meta.url).href,
+    import.meta.url,
+  );
+
 const SCENARIO_SECRET_VALUE = "rea-browser-verifier-secret";
 const SCENARIO_URL_SECRET_VALUE = "rea-browser-url-verifier-secret";
 process.env.REA_BROWSER_VERIFIER_SECRET = SCENARIO_SECRET_VALUE;
diff --git a/scripts/windows-capabilities.mjs b/scripts/windows-capabilities.mjs
index bba22a3298..482ecc6fde 100644
--- a/scripts/windows-capabilities.mjs
+++ b/scripts/windows-capabilities.mjs
@@ -1,6 +1,10 @@
 #!/usr/bin/env node
 
-import { probeWindowsCapabilities } from "../dist/application/WindowsCapabilities.js";
+import { importVerifierSource } from "./lib/verifier-source-loader.mjs";
+const { probeWindowsCapabilities } = await importVerifierSource(
+  new URL("./lib/windows-capabilities.mts", import.meta.url).href,
+  import.meta.url,
+);
 
 const report = await probeWindowsCapabilities();
 await new Promise((resolveOutput) =>
diff --git a/tests/boundary/browser/browserProcessStartup.test.ts b/tests/boundary/browser/browserProcessStartup.test.ts
index b02488cbfe..17f0171f24 100644
--- a/tests/boundary/browser/browserProcessStartup.test.ts
+++ b/tests/boundary/browser/browserProcessStartup.test.ts
@@ -13,7 +13,7 @@ import {
   BROWSER_DEVTOOLS_STARTUP_TIMEOUT_MS,
   BrowserStartupError,
   waitForBrowserDevtoolsPort,
-} from "../../../src/browser/BrowserProcessStartup.js";
+} from "../../../scripts/lib/browser-process-startup.mjs";
 import { assertOrdinaryWindowsVerifierCaller } from "../../../scripts/lib/windows-ordinary-user-verifier.mjs";
 
 describe("browser process startup", () => {
diff --git a/tests/boundary/browser/cdpSvgXlinkHref.test.ts b/tests/boundary/browser/cdpSvgXlinkHref.test.ts
index 7d1e2a6274..668c2372c0 100644
--- a/tests/boundary/browser/cdpSvgXlinkHref.test.ts
+++ b/tests/boundary/browser/cdpSvgXlinkHref.test.ts
@@ -5,7 +5,7 @@ import { join } from "node:path";
 import { expect } from "vitest";
 
 import { CdpBrowserProvider } from "../../../src/browser/CdpBrowserProvider.js";
-import { waitForBrowserDevtoolsPort } from "../../../src/browser/BrowserProcessStartup.js";
+import { waitForBrowserDevtoolsPort } from "../../../scripts/lib/browser-process-startup.mjs";
 import {
   inspectWebPageInputSchema,
   listBrowserTargetsInputSchema,
diff --git a/tests/conformance/providers/ghidra/windowsCapabilities.test.ts b/tests/conformance/providers/ghidra/windowsCapabilities.test.ts
index 77d2bca8bd..d7857c2199 100644
--- a/tests/conformance/providers/ghidra/windowsCapabilities.test.ts
+++ b/tests/conformance/providers/ghidra/windowsCapabilities.test.ts
@@ -4,7 +4,7 @@ import {
   probeWindowsCapabilities,
   systemNoFollowOpenCapability,
   type WindowsCapabilityDependencies,
-} from "../../../../src/application/WindowsCapabilities.js";
+} from "../../../../scripts/lib/windows-capabilities.mjs";
 
 const dependencies = (
   overrides: Partial<WindowsCapabilityDependencies> = {},