diff --git a/scripts/qa-all-layer-switches.mjs b/scripts/qa-all-layer-switches.mjs
new file mode 100644
index 000000000..a6f5f6d61
--- /dev/null
+++ b/scripts/qa-all-layer-switches.mjs
@@ -0,0 +1,119 @@
+import { spawnSync } from 'node:child_process';
+import { mkdirSync, mkdtempSync, writeFileSync } from 'node:fs';
+import { tmpdir } from 'node:os';
+import { join, resolve } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import assert from 'node:assert/strict';
+import { APPLICATION_LAYER_DIRECTORY } from '../src/app/layers/directory.js';
+
+const base = new URL(process.argv[2]);
+if (
+  !['127.0.0.1', 'localhost'].includes(base.hostname) ||
+  ['', '4173', '4185', '4186', '4187', '4188', '4189', '4194'].includes(
+    base.port,
+  )
+)
+  throw Error('Supply an unreserved keyless local preview URL');
+const output = process.argv[3]
+  ? resolve(process.argv[3])
+  : mkdtempSync(join(tmpdir(), 'gev-layer-switch-'));
+mkdirSync(output, { recursive: true });
+const runs = [
+  ['engine-switch', ['earthquakes']],
+  ['director-engine-switch', []],
+  ['layer-handoff', ['flights']],
+  ['layer-handoff', ['military'], '--military'],
+  [
+    'ground-layer-switch',
+    ['ais-live-vessels', 'air-quality', 'gnss-integrity', 'fire-perimeters'],
+  ],
+  ['contact-switch', ['military-awareness', 'military-installations']],
+  ['local-adsb-engine-switch', ['local-adsb']],
+  ['ghostmaps-switch', ['s2-ghostmaps']],
+  [
+    'weather-engine-switch',
+    [
+      'weather-radar',
+      'weather-satellite',
+      'weather-lightning',
+      'weather-cyclones',
+    ],
+  ],
+  ['wind-engine-switch', ['wind']],
+  ['infrastructure-engine-switch', ['local-dams', 'local-datacenters']],
+  ['submarine-cables-engine-switch', ['telegeography-submarine-cables']],
+  ['directions-engine-switch', ['directions']],
+  ['nepal-locator-switch', ['bhote-koshi-locator']],
+  ['nepal-event-switch', ['bhote-koshi-2026']],
+  ['traffic-engine-switch', ['traffic']],
+  ['traffic-engine-switch', ['traffic'], '--simulation'],
+  ['street-level-engine-switch', ['street-level']],
+  ['street-level-engine-switch', ['street-level'], '--panoramax'],
+  ['radio-engine-switch', ['radio']],
+  ['w2-imagery', ['recent-imagery']],
+  ['fire-camera-switch', ['alpr-cameras']],
+  ['fire-camera-switch', ['local-firms'], '--fires'],
+  ['urban-engine-switch', ['bikeshare']],
+  ['urban-engine-switch', ['transit'], '--transit'],
+  ['cctv-engine-switch', ['cctv']],
+  ['space-engine-switch', ['satellites']],
+  ['space-engine-switch', ['rocket-launches'], '--missions'],
+];
+const ids = [...new Set(runs.flatMap(([, ids]) => ids))].sort();
+assert.deepEqual(
+  ids,
+  APPLICATION_LAYER_DIRECTORY.map((l) => l.id).sort(),
+  'Every catalog layer must have a browser scenario',
+);
+const report = [];
+for (const [name, layers, flag] of runs) {
+  const label = name + (flag ?? '');
+  const args =
+    name === 'w2-imagery'
+      ? [
+          '--url',
+          base.origin + '/?engine=navara',
+          '--report',
+          join(output, 'imagery.json'),
+          '--switch',
+          '--preview',
+        ]
+      : [base.origin, ...(flag ? [flag] : [])];
+  const start = Date.now();
+  const run = spawnSync(
+    process.execPath,
+    [fileURLToPath(new URL('./qa-' + name + '.mjs', import.meta.url)), ...args],
+    {
+      encoding: 'utf8',
+      timeout: 240000,
+      maxBuffer: 8388608,
+      env: { ...process.env, GOOGLE_MAPS_API_KEY: '', CESIUM_ION_TOKEN: '' },
+    },
+  );
+  const ok = run.status === 0;
+  writeFileSync(
+    join(output, label + '.log'),
+    (run.stdout || '') + (run.stderr || '') + (run.error?.message || ''),
+  );
+  report.push({
+    label,
+    layers,
+    ok,
+    seconds: Math.round((Date.now() - start) / 1000),
+  });
+  writeFileSync(
+    join(output, 'summary.json'),
+    JSON.stringify({ ids, report }, null, 2) + '\n',
+  );
+  console.log(ok ? 'PASS' : 'FAIL', label, report.at(-1).seconds);
+}
+console.log(
+  ids.length +
+    ' layers, ' +
+    report.filter((row) => row.ok).length +
+    '/' +
+    runs.length +
+    ' browser scenarios. ' +
+    output,
+);
+if (report.some((row) => !row.ok)) process.exitCode = 1;
diff --git a/scripts/qa-engine-switch.mjs b/scripts/qa-engine-switch.mjs
index cc967add1..be6a309c9 100644
--- a/scripts/qa-engine-switch.mjs
+++ b/scripts/qa-engine-switch.mjs
@@ -1,5 +1,6 @@
 import assert from 'node:assert/strict';
 import puppeteer from 'puppeteer';
+import sharp from 'sharp';
 import { blockPaidQaMaps } from './qa-map-policy.mjs';
 import { installTileCache } from './qa/tileCache.mjs';
 
@@ -29,7 +30,14 @@ try {
     window.fetch = (url, options) =>
       String(url).startsWith('https://earthquake.usgs.gov/earthquakes/feed/')
         ? Promise.resolve(
-            Response.json({ type: 'FeatureCollection', features: [] }),
+            Response.json({
+              type: 'FeatureCollection',
+              features: [{
+                type: 'Feature', id: 'qa-boston',
+                geometry: { type: 'Point', coordinates: [-71.0605, 42.3554, 8] },
+                properties: { mag: 4, time: Date.now(), place: 'QA Boston' },
+              }],
+            }),
           )
         : fetch(url, options);
   });
@@ -53,6 +61,24 @@ try {
     });
     assert.equal(await page.$eval('#globe-engine', (el) => el.value), kind);
   }
+  async function verifyQuakeSurface(kind) {
+    const meanRed = async (enabled) => {
+      await page.evaluate(async (enabled) => {
+        const a = window.__godsEyeView;
+        await a.dataManager.setEnabled('earthquakes', enabled, { origin: 'user' });
+        a.engine.render.request('qa-quake-surface');
+      }, enabled);
+      if (enabled) await page.waitForFunction(() =>
+        window.__godsEyeView.dataManager.layers.get('earthquakes').module.getAnalystRecords().length === 1);
+      await new Promise(resolve => setTimeout(resolve, 1800));
+      const bytes = await page.screenshot({ clip: { x: 675, y: 403, width: 20, height: 20 } });
+      const { channels } = await sharp(bytes).stats();
+      return channels[0].mean - channels[1].mean;
+    };
+    const off = await meanRed(false), on = await meanRed(true);
+    assert.ok(on > off + 8, kind + ' must draw the shallow red earthquake footprint: ' + off + ' -> ' + on);
+    console.log('PASS', kind, 'earthquake footprint red minus green:', off, '->', on);
+  }
   const stored = () => page.evaluate(() => localStorage.getItem('gev.engine'));
   async function switchTo(kind) {
     if (
@@ -151,6 +177,7 @@ try {
   }
   await page.goto(base.href, { waitUntil: 'domcontentloaded' });
   await ready('cesium');
+  await verifyQuakeSurface('cesium');
   const sharpen = () =>
     page.evaluate(
       () => window.__godsEyeView.styleManager.getControlState().sharpen,
@@ -162,6 +189,7 @@ try {
   });
   assert.deepEqual(await sharpen(), { enabled: true, intensityPct: 49 });
   await switchTo('navara');
+  await verifyQuakeSurface('navara');
   assert.deepEqual(await sharpen(), { enabled: true, intensityPct: 80 });
   assert.ok(
     await page.evaluate(
diff --git a/scripts/qa-radio-engine-switch.mjs b/scripts/qa-radio-engine-switch.mjs
index 9e0bbaad9..9c035014d 100644
--- a/scripts/qa-radio-engine-switch.mjs
+++ b/scripts/qa-radio-engine-switch.mjs
@@ -5,6 +5,11 @@ import { blockPaidQaMaps } from './qa-map-policy.mjs';
 import { switchGlobe } from './qa-switch-globe.mjs';
 const url = new URL(process.argv[2]);
 const soak = process.argv.includes('--soak');
+const requested = process.argv.find((arg) => arg.startsWith('--swaps='));
+const swaps = requested ? Number(requested.slice(8)) : soak ? 50 : 2;
+if (requested && (!soak || !Number.isInteger(swaps) || swaps % 2 || swaps < 4 || swaps > 1000))
+  throw Error('Use --soak --swaps=N with an even count from 4 to 1000');
+
 if (
   !['localhost', '127.0.0.1'].includes(url.hostname) ||
   ['', '4173', '4185', '4186', '4187', '4188', '4189', '4194'].includes(
@@ -78,7 +83,7 @@ try {
     window.qaModels = new Map([...dataManager.layers].map(([id, entry]) => [id, entry.module]));
     window.qaEngines = new Map([[engine.kind, engine]]);
   });
-  const swaps = soak ? 50 : 2, measurements = [], memory = [];
+  const measurements = [], memory = [];
   let contextListeners;
   for (let i = 1; i <= swaps; i++) {
     const kind = i % 2 ? 'cesium' : 'navara';
@@ -96,7 +101,7 @@ try {
           window.qaModels.size === 33 && window.qaQuakeReads >= 1 &&
           dataManager.getEnabledLayerIds().has('earthquakes');
       }));
-      if ([2, 10, 50].includes(i)) {
+      if ([2, 10, 50, 100, 250, swaps].includes(i)) {
         const { result } = await client.send('Runtime.evaluate', {
           includeCommandLineAPI: true,
           returnByValue: true,
diff --git a/scripts/qa-w2-imagery.mjs b/scripts/qa-w2-imagery.mjs
index 313c0814b..50f0ca2c1 100644
--- a/scripts/qa-w2-imagery.mjs
+++ b/scripts/qa-w2-imagery.mjs
@@ -2,6 +2,7 @@ import {switchGlobe} from './qa-switch-globe.mjs';
 import fs from 'node:fs/promises';
 import puppeteer from 'puppeteer';
 import sharp from 'sharp';
+import { installTileCache } from './qa/tileCache.mjs';
 import { blockPaidQaMaps } from './qa-map-policy.mjs';
 import { isExpectedPreviewSetupError, redact } from './qa-browserEvidence.mjs';
 
@@ -51,6 +52,7 @@ try {
   const page = await browser.newPage();
   await page.setViewport({ width: 1280, height: 800, deviceScaleFactor: 1 });
   await blockPaidQaMaps(page);
+  await installTileCache(page);
   page.on('pageerror', (e) => report.errors.push(redact(e.message)));
   page.on('console', (message) => {
     if (message.type() !== 'error') return;
@@ -64,7 +66,10 @@ try {
         ((/\b503\b/.test(text) &&
           String(message.location()?.url).includes('HLS_L30')) ||
           (failLandsat && /Failed to obtain image tile/.test(text))));
-    (expected ? report.expectedErrors : report.errors).push(text);
+    const source = message.location()?.url;
+    (expected ? report.expectedErrors : report.errors).push(
+      source ? text + ' (' + new URL(source, url).hostname + ')' : text,
+    );
   });
   const session = await page.createCDPSession();
   await session.send('Fetch.enable', {
diff --git a/scripts/qa-weather-engine-switch.mjs b/scripts/qa-weather-engine-switch.mjs
index b117cd039..3514c23a2 100644
--- a/scripts/qa-weather-engine-switch.mjs
+++ b/scripts/qa-weather-engine-switch.mjs
@@ -266,14 +266,41 @@ try {
     await manager.setEnabled('weather-cyclones', true, {origin:'user'});
     window.qaStorm = manager.layers.get('weather-cyclones').module;
   },ids);
-  const click = async (lon,lat) => {
-    const at = await p.evaluate(position => {
-      const {engine} = window.__godsEyeView;
-      const xy = engine.projector.worldToWindow(position,{});
-      const rect = engine.host.canvas.getBoundingClientRect();
-      return [rect.left+xy.x,rect.top+xy.y];
-    },fromDegrees(lon,lat));
-    await p.mouse.click(...at);
+  const click = async (lon, lat, insideCone) => {
+    const hit = await p.waitForFunction(
+      ({ lon, lat, base, insideCone }) => {
+        const { engine } = window.__godsEyeView;
+        const longitude = (lon * Math.PI) / 180,
+          latitude = (lat * Math.PI) / 180;
+        const height =
+          engine.surface.terrainHeight({ longitude, latitude, height: 0 }) ?? 0;
+        const xy = engine.projector.worldToWindow(
+          {
+            x: base.x + height * Math.cos(latitude) * Math.cos(longitude),
+            y: base.y + height * Math.cos(latitude) * Math.sin(longitude),
+            z: base.z + height * Math.sin(latitude),
+          },
+          {},
+        );
+        if (!xy) return false;
+        const canvas = engine.host.canvas,
+          rect = canvas.getBoundingClientRect();
+        const x = rect.left + xy.x,
+          y = rect.top + xy.y;
+        if (document.elementFromPoint(x, y) !== canvas) return false;
+        const id = engine.picker.pick(xy)?.id;
+        if (
+          String(id?.id ?? id).startsWith('cyclone:al012026:cone:') !==
+          insideCone
+        )
+          return false;
+        return [x, y];
+      },
+      { timeout: 30000 },
+      { lon, lat, base: fromDegrees(lon, lat), insideCone },
+    );
+    await p.mouse.click(...(await hit.jsonValue()));
+    await hit.dispose();
   };
   const before = cycloneReads;
   for (const kind of ['navara','cesium','navara']) {
@@ -285,10 +312,9 @@ try {
       window.qaStorm.getDiagnostics().selectedId === 'al012026');
     const d = await p.evaluate(()=>window.qaStorm.getDiagnostics());
     assert.deepEqual([d.storms,d.tracks,d.cones,d.forecastPoints],[1,1,1,1],kind);
-    await new Promise(r => setTimeout(r,1200));
-    await click(-79.43,43.59);
+    await click(-79.43,43.59,false);
     await p.waitForFunction(()=>window.qaStorm.getDiagnostics().selectedId === null);
-    await click(-79.30,43.643);
+    await click(-79.30,43.643,true);
     await p.waitForFunction(()=>window.qaStorm.getDiagnostics().selectedId === 'al012026');
     assert.equal(cycloneReads,before);
     console.log('PASS',kind,'pick advisory cone and retain selected storm');
diff --git a/src/app/constructCatalog.test.mjs b/src/app/constructCatalog.test.mjs
index 00330d28a..1c20fab8d 100644
--- a/src/app/constructCatalog.test.mjs
+++ b/src/app/constructCatalog.test.mjs
@@ -245,6 +245,32 @@ test('the catalog per engine: Cesium as before, Navara only what it can show', a
   assert.equal(subset.get('military'), undefined);
 });
 
+test('both production registries attach to the same 33 session models', async (t) => {
+  const { registerNavaraLayerRenderers } = await import('./navaraMode.js');
+  const lifetime = new AbortController();
+  t.after(() => lifetime.abort());
+  const options = {
+    layerSession: { lifetime },
+    sources: createStandaloneLayerSources(),
+    signal: lifetime.signal,
+    surface: fixtureSurface(lifetime.signal),
+  };
+  const cesium = createApplicationCatalog(options);
+  await registerNavaraLayerRenderers();
+  const navara = createApplicationCatalog({ ...options, engineKind: 'navara' });
+  assert.equal(cesium.layers.length, 33);
+  assert.deepEqual(
+    navara.layers.map(({ id }) => id),
+    cesium.layers.map(({ id }) => id),
+  );
+  assert.deepEqual(navara.metadata, cesium.metadata);
+  for (const layer of cesium.layers) {
+    assert.equal(navara.get(layer.id), layer, layer.id);
+    assert.equal(typeof layer.attachRenderer, 'function', layer.id);
+    assert.equal(typeof layer.detachRenderer, 'function', layer.id);
+  }
+});
+
 test('a GNSS integrity source can set the layer evidence window', (t) => {
   const lifetime = new AbortController();
   t.after(() => lifetime.abort());