diff --git a/.github/workflows/browser-suite.yml b/.github/workflows/browser-suite.yml
new file mode 100644
index 000000000..1b515cf1e
--- /dev/null
+++ b/.github/workflows/browser-suite.yml
@@ -0,0 +1,57 @@
+# Runs the ClojureScript test suite in headless Chromium (lein fig:test, then
+# test/e2e/cljs-harness.js; docs/kb/cljs-headless-harness.md).
+#
+# The JVM suite runs on integration through locale.yml, but the builder's wiring
+# (re-frame events, interceptors, subscriptions) is tested only in the browser,
+# so until this ran a change that broke it passed CI.
+
+name: Browser suite
+
+on:
+  push:
+    branches: [integration, develop, main]
+  pull_request:
+    branches: [integration, develop, main]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  cljs-suite:
+    name: ClojureScript suite in Chromium
+    runs-on: ubuntu-latest
+    timeout-minutes: 25
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: '21'
+
+      # Pinned to the version locale.yml and continuous-integration.yml use.
+      - name: Install Leiningen
+        run: |
+          curl -fsSL -o "$HOME/lein" \
+            https://raw.githubusercontent.com/technomancy/leiningen/2.11.2/bin/lein
+          chmod +x "$HOME/lein"
+          echo "$HOME" >> "$GITHUB_PATH"
+          "$HOME/lein" version
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+
+      # package.json declares Playwright; its own Chromium, which find-chrome falls back to.
+      - name: Install Playwright and Chromium
+        run: |
+          npm install --no-audit --no-fund
+          npx playwright install --with-deps chromium
+
+      - name: Compile the test build
+        run: lein fig:test
+
+      # Exits 0 only when every test passes and no FAIL or ERROR is reported.
+      - name: Run the suite headless
+        run: node test/e2e/cljs-harness.js
diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 83aa9268d..7e8ea72da 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -6,9 +6,9 @@ name: CI
 
 on:
   push:
-    branches: [develop, main]
+    branches: [integration, develop, main]
   pull_request:
-    branches: [develop, main]
+    branches: [integration, develop, main]
   workflow_dispatch:
 
 permissions:
@@ -134,7 +134,8 @@ jobs:
     name: Submit Clojure dependencies
     runs-on: ubuntu-latest
     needs: detect-stack
-    if: github.event_name != 'pull_request'
+    # Not integration: alerts read the default branch, and this job ran only for develop and main.
+    if: github.event_name != 'pull_request' && github.ref_name != 'integration'
     permissions:
       contents: write
     steps:
diff --git a/test/e2e/cljs-harness.js b/test/e2e/cljs-harness.js
index b8a81a738..d0e9f677a 100644
--- a/test/e2e/cljs-harness.js
+++ b/test/e2e/cljs-harness.js
@@ -2,7 +2,10 @@
 const http=require('http'),fs=require('fs'),path=require('path');const {chromium}=require('playwright');
 const {findChrome}=require('../browser/lib/find-chrome');
 const ROOT=path.resolve('target/test');
+// fig:test writes only the scripts; the page that runs them is served from here unless one exists.
+const RUNNER='<body><div id="app-auto-testing"></div><script src="js/test-auto-testing.js"></script></body>';
 const srv=http.createServer((q,r)=>{const u=decodeURIComponent(q.url.split('?')[0]);const f=path.join(ROOT,u==='/'?'runner-all.html':u);
+ if(f===path.join(ROOT,'runner-all.html')&&!fs.existsSync(f)){r.writeHead(200,{'Content-Type':'text/html; charset=utf-8'});return r.end(RUNNER);}
  if(!f.startsWith(ROOT)||!fs.existsSync(f)||fs.statSync(f).isDirectory()){r.writeHead(404);return r.end();}
  r.writeHead(200,{'Content-Type':f.endsWith('.js')?'application/javascript; charset=utf-8':f.endsWith('.html')?'text/html; charset=utf-8':'application/octet-stream'});fs.createReadStream(f).pipe(r);});
 (async()=>{await new Promise(r=>srv.listen(0,r));const port=srv.address().port;
@@ -18,7 +21,8 @@ const srv=http.createServer((q,r)=>{const u=decodeURIComponent(q.url.split('?')[
  const totals=ti>=0?lines.slice(ti+1,lines.indexOf('Hide/Show Passing',ti)).join(', '):'';
  const verdict=ti>0?lines[ti-1]:'';
  console.log('SUMMARY:',ran.slice(-1)[0]||(totals?`${verdict}: ${totals}`:'(none)'),tot.slice(-1)[0]||'');
- const passed=ran.length?/ 0 failures, 0 errors/.test(' '+(tot.slice(-1)[0]||'')):verdict==='All Tests Passed';
+ // Figwheel says "All Tests Passed" for zero tests too (none found or loaded), so a pass needs a count.
+ const passed=ran.length?/ 0 failures, 0 errors/.test(' '+(tot.slice(-1)[0]||'')):verdict==='All Tests Passed'&&/\b[1-9]\d*\s+Tests\b/.test(totals);
  process.exitCode=passed?0:1;
  // The auto-testing page marks each failed assertion with a .test-fail node inside its test's node.
  const shown=await pg.evaluate(()=>[...document.querySelectorAll('.test-fail')].map(n=>
@@ -28,6 +32,5 @@ const srv=http.createServer((q,r)=>{const u=decodeURIComponent(q.url.split('?')[
  fs.writeFileSync('target/test/cljs-run.log',all);
  // Green only on a complete summary reading zero failures and zero errors; a
  // timeout or crash leaves no summary and must not pass.
- const last=tot.slice(-1)[0]||''; const clean=ran.length>0&&/^0 failures, 0 errors\./.test(last);
- process.exitCode=clean&&fails.length===0?0:1;
+ process.exitCode=passed&&fails.length===0?0:1;
  await br.close();srv.close();})();