diff --git a/.github/workflows/binance-orderbook-ui.yml b/.github/workflows/binance-orderbook-ui.yml
index e798eac..39a6ed9 100644
--- a/.github/workflows/binance-orderbook-ui.yml
+++ b/.github/workflows/binance-orderbook-ui.yml
@@ -9,7 +9,11 @@ on:
       - "playwright.config.js"
       - "src/binance-orderbook-trade/**"
       - "scripts/binance-orderbook-trade.user.js"
+      - "scripts/binance-*.mjs"
       - "e2e/binance-orderbook/**"
+      - "test/unit/binance-*.test.js"
+      - "test/unit/binance-orderbook-trade/**"
+      - "test/dom/binance-orderbook-trade/**"
   push:
     branches:
       - main
@@ -20,7 +24,11 @@ on:
       - "playwright.config.js"
       - "src/binance-orderbook-trade/**"
       - "scripts/binance-orderbook-trade.user.js"
+      - "scripts/binance-*.mjs"
       - "e2e/binance-orderbook/**"
+      - "test/unit/binance-*.test.js"
+      - "test/unit/binance-orderbook-trade/**"
+      - "test/dom/binance-orderbook-trade/**"
 
 permissions:
   contents: read
@@ -37,7 +45,7 @@ jobs:
           cache: npm
       - run: npm ci
       - run: npx playwright install --with-deps chromium
-      - run: npm run test:binance-orderbook-trade
+      - run: npm run test:binance-orderbook-ui-toolchain
       - run: npm run build:binance-orderbook-trade
       - run: git diff --exit-code -- scripts/binance-orderbook-trade.user.js
       - run: npm run test:ui
diff --git a/docs/binance-orderbook-trade-ui-automation.md b/docs/binance-orderbook-trade-ui-automation.md
index 6597fa5..9045812 100644
--- a/docs/binance-orderbook-trade-ui-automation.md
+++ b/docs/binance-orderbook-trade-ui-automation.md
@@ -127,7 +127,10 @@ test orders from count changes alone.
   lifecycle.
 - Add a deterministic Binance Futures fixture with React-style subtree replacement.
 - Add scenario data, interaction probes, and the core cancel-current-symbol matrix.
-- Run L2 in the PR gate.
+- Run the complete Binance orderbook unit/DOM toolchain and L2 in the PR gate.
+  This includes the Stage 3/4 capture utilities without coupling the gate to
+  unrelated userscript suites. Changes limited to Stage 3/4 scripts or their unit
+  tests must still trigger this workflow.
 
 ### Stage 2: Expanded Host and Fault Matrix
 
diff --git a/package.json b/package.json
index 1853e72..ff62a26 100644
--- a/package.json
+++ b/package.json
@@ -20,6 +20,7 @@
     "check:m3u8-downloader": "node --check scripts/m3u8-downloader.user.js",
     "test": "node --test",
     "test:binance-orderbook-trade": "node --test test/unit/binance-orderbook-trade/*.test.js test/dom/binance-orderbook-trade/*.test.js",
+    "test:binance-orderbook-ui-toolchain": "node --test test/unit/binance-orderbook-trade/*.test.js test/dom/binance-orderbook-trade/*.test.js test/unit/binance-*.test.js",
     "test:ui": "playwright test",
     "test:ui:headed": "playwright test --headed",
     "test:ui:debug": "playwright test --debug"
diff --git a/test/unit/binance-ui-workflow.test.js b/test/unit/binance-ui-workflow.test.js
new file mode 100644
index 0000000..0c58d78
--- /dev/null
+++ b/test/unit/binance-ui-workflow.test.js
@@ -0,0 +1,21 @@
+import assert from 'node:assert/strict';
+import { readFile } from 'node:fs/promises';
+import test from 'node:test';
+
+const WORKFLOW_PATH = new URL('../../.github/workflows/binance-orderbook-ui.yml', import.meta.url);
+
+test('Binance UI workflow gates the complete deterministic and live test toolchain', async () => {
+  const workflow = await readFile(WORKFLOW_PATH, 'utf8');
+
+  for (const pathPattern of [
+    'scripts/binance-*.mjs',
+    'test/unit/binance-*.test.js',
+    'test/unit/binance-orderbook-trade/**',
+    'test/dom/binance-orderbook-trade/**',
+  ]) {
+    assert.ok(workflow.includes(`- "${pathPattern}"`), `Missing workflow path: ${pathPattern}`);
+  }
+  assert.match(workflow, /- run: npm run test:binance-orderbook-ui-toolchain\n/);
+  assert.doesNotMatch(workflow, /- run: npm test\n/);
+  assert.match(workflow, /- run: npm run test:ui\n/);
+});