diff --git a/scripts/test-projects.test-support.mjs b/scripts/test-projects.test-support.mjs
index 5873ac9283c..c6c2fc6c366 100644
--- a/scripts/test-projects.test-support.mjs
+++ b/scripts/test-projects.test-support.mjs
@@ -1795,6 +1795,16 @@ function resolveConventionalToolingTestTargets(changedPath, cwd = process.cwd())
   const dashedStem = stem.replaceAll("/", "-");
   const e2eLibStem = stem.startsWith("e2e/lib/") ? stem.slice("e2e/lib/".length) : null;
   const e2eLibDashedStem = e2eLibStem?.replaceAll("/", "-");
+  const e2eLibParts = e2eLibStem?.split("/") ?? [];
+  const e2eLibFamily = e2eLibParts.length > 1 ? e2eLibParts[0] : null;
+  const e2eLibFamilyCandidates = e2eLibFamily
+    ? [
+        `test/scripts/${e2eLibFamily}.test.ts`,
+        `test/scripts/${e2eLibFamily}-client.test.ts`,
+        `test/scripts/${e2eLibFamily}-assertions.test.ts`,
+        `test/scripts/${e2eLibFamily}-probe.test.ts`,
+      ]
+    : [];
   const candidates = [
     `test/scripts/${stem}.test.ts`,
     `test/scripts/${dashedStem}.test.ts`,
@@ -1802,6 +1812,7 @@ function resolveConventionalToolingTestTargets(changedPath, cwd = process.cwd())
     ...(e2eLibDashedStem
       ? [`test/scripts/${e2eLibDashedStem}.test.ts`, `test/scripts/e2e-${e2eLibDashedStem}.test.ts`]
       : []),
+    ...e2eLibFamilyCandidates,
     `src/scripts/${stem}.test.ts`,
     `src/scripts/${dashedStem}.test.ts`,
     `src/scripts/${basename}.test.ts`,
diff --git a/test/scripts/test-projects.test.ts b/test/scripts/test-projects.test.ts
index 8873f839999..d25e0d5d584 100644
--- a/test/scripts/test-projects.test.ts
+++ b/test/scripts/test-projects.test.ts
@@ -312,6 +312,46 @@ describe("scripts/test-projects changed-target routing", () => {
         "scripts/e2e/lib/bundled-plugin-install-uninstall/probe.mjs",
         ["test/scripts/bundled-plugin-install-uninstall-probe.test.ts"],
       ],
+      [
+        "scripts/e2e/lib/browser-cdp-snapshot/assert-snapshot.mjs",
+        ["test/scripts/browser-cdp-snapshot.test.ts"],
+      ],
+      [
+        "scripts/e2e/lib/browser-cdp-snapshot/fixture-server.mjs",
+        ["test/scripts/browser-cdp-snapshot.test.ts"],
+      ],
+      [
+        "scripts/e2e/lib/codex-media-path/fake-codex-app-server.mjs",
+        ["test/scripts/codex-media-path-client.test.ts"],
+      ],
+      [
+        "scripts/e2e/lib/codex-media-path/scenario.sh",
+        ["test/scripts/codex-media-path-client.test.ts"],
+      ],
+      [
+        "scripts/e2e/lib/codex-media-path/jsonl-request-tail.mjs",
+        ["test/scripts/codex-media-path-client.test.ts"],
+      ],
+      [
+        "scripts/e2e/lib/codex-media-path/limits.mjs",
+        ["test/scripts/codex-media-path-client.test.ts"],
+      ],
+      [
+        "scripts/e2e/lib/codex-media-path/write-config.mjs",
+        ["test/scripts/codex-media-path-client.test.ts"],
+      ],
+      [
+        "scripts/e2e/lib/gateway-network/limits.mjs",
+        ["test/scripts/gateway-network-client.test.ts"],
+      ],
+      [
+        "scripts/e2e/lib/gateway-network/ws-frames.mjs",
+        ["test/scripts/gateway-network-client.test.ts"],
+      ],
+      [
+        "scripts/e2e/lib/npm-telegram-live/prepare-package.mjs",
+        ["test/scripts/npm-telegram-live.test.ts"],
+      ],
       [
         "scripts/e2e/lib/kitchen-sink-plugin/assertions.mjs",
         ["test/scripts/kitchen-sink-plugin-assertions.test.ts"],
@@ -320,14 +360,43 @@ describe("scripts/test-projects changed-target routing", () => {
         "scripts/e2e/lib/live-plugin-tool/assertions.mjs",
         ["test/scripts/live-plugin-tool-assertions.test.ts"],
       ],
-      [
-        "scripts/e2e/lib/plugins/assertions.mjs",
-        ["test/scripts/plugins-assertions.test.ts"],
-      ],
+      ["scripts/e2e/lib/plugins/assertions.mjs", ["test/scripts/plugins-assertions.test.ts"]],
       [
         "scripts/e2e/lib/release-user-journey/assertions.mjs",
         ["test/scripts/release-user-journey-assertions.test.ts"],
       ],
+      [
+        "scripts/e2e/lib/openai-chat-tools/write-config.mjs",
+        ["test/scripts/openai-chat-tools-client.test.ts"],
+      ],
+      [
+        "scripts/e2e/lib/openai-chat-tools/scenario.sh",
+        ["test/scripts/openai-chat-tools-client.test.ts"],
+      ],
+      [
+        "scripts/e2e/lib/openai-web-search-minimal/mock-server.mjs",
+        [
+          "test/scripts/openai-web-search-minimal-client.test.ts",
+          "test/scripts/openai-web-search-minimal-assertions.test.ts",
+        ],
+      ],
+      ["scripts/e2e/lib/openwebui/http-probe.mjs", ["test/scripts/openwebui-probe.test.ts"]],
+      [
+        "scripts/e2e/lib/plugins/npm-registry-server.mjs",
+        ["test/scripts/plugins-assertions.test.ts"],
+      ],
+      [
+        "scripts/e2e/lib/release-scenarios/write-cli-plugin.mjs",
+        ["test/scripts/release-scenarios-assertions.test.ts"],
+      ],
+      [
+        "scripts/e2e/lib/release-user-journey/clickclack-fixture.mjs",
+        ["test/scripts/release-user-journey-assertions.test.ts"],
+      ],
+      [
+        "scripts/e2e/lib/upgrade-survivor/run.sh",
+        ["test/scripts/upgrade-survivor-assertions.test.ts"],
+      ],
       ["scripts/e2e/lib/run-with-pty.mjs", ["test/scripts/e2e-run-with-pty.test.ts"]],
     ]);