diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 229a4d599..5d70ee765 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -256,3 +256,10 @@ jobs:
         env:
           PYTEST_SHARD: ${{ matrix.shard }}
         run: python -m pytest -q -rs --durations=25 --shard "$PYTEST_SHARD"
+
+      - name: Playwright mobile layout checks (shard 1/4 only)
+        if: steps.docs-check.outputs.docs_only != 'true' && matrix.shard == '1/4'
+        run: |
+          ODYSSEUS_TEST_PYTHON=python ODYSSEUS_LAYOUT_BROWSER=chromium npx --no-install playwright test \
+            --config tests/e2e/ios-layout.config.cjs \
+            --reporter=line
diff --git a/package.json b/package.json
index aa454e017..79cf83c3d 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,11 @@
     "test:photo-editor": "playwright test --config tests/e2e/playwright.config.js",
     "test:photo-editor:install": "playwright install chromium firefox webkit",
     "test:photo-editor:firefox": "PHOTO_EDITOR_E2E_BROWSER=firefox playwright test --config tests/e2e/playwright.config.js",
-    "test:photo-editor:webkit": "PHOTO_EDITOR_E2E_BROWSER=webkit playwright test --config tests/e2e/playwright.config.js"
+    "test:photo-editor:webkit": "PHOTO_EDITOR_E2E_BROWSER=webkit playwright test --config tests/e2e/playwright.config.js",
+    "test:ios-layout": "playwright test --config tests/e2e/ios-layout.config.cjs",
+    "test:ios-layout:chromium": "ODYSSEUS_LAYOUT_BROWSER=chromium playwright test --config tests/e2e/ios-layout.config.cjs",
+    "test:ios-layout:webkit": "ODYSSEUS_LAYOUT_BROWSER=webkit playwright test --config tests/e2e/ios-layout.config.cjs",
+    "test:ios-layout:install": "playwright install chromium webkit"
   },
   "devDependencies": {
     "@antithesishq/bombadil": "^0.7.0",
diff --git a/static/css/17-research.css b/static/css/17-research.css
index c4de5cb75..2c43aa2c8 100644
--- a/static/css/17-research.css
+++ b/static/css/17-research.css
@@ -2690,11 +2690,14 @@ body.theme-frosted .modal {
     max-height: 95dvh !important;
   }
 
+  /* Notes and Documents must respect the same viewport and safe-area
+     top as other mobile full-height sheets. Keep these authoritative rules
+     consistent with 05-documents.css and 14-email.css. */
   body.doc-view .doc-editor-pane,
   body.notes-view .notes-pane {
-    inset: auto 0 0 !important;
-    height: 95dvh !important;
-    max-height: 95dvh !important;
+    inset: var(--sheet-top) 0 0 !important;
+    height: calc(var(--app-height) - var(--sheet-top)) !important;
+    max-height: calc(var(--app-height) - var(--sheet-top)) !important;
   }
 }
 
diff --git a/static/index.html b/static/index.html
index aafacc2e1..df3045af3 100644
--- a/static/index.html
+++ b/static/index.html
@@ -16,13 +16,6 @@
   <link rel="apple-touch-icon" href="/static/icons/icon-192.png">
   <script nonce="{{CSP_NONCE}}">
   window._odysseusLoadTime = Date.now();
-  // Stops iOS focus-zoom on every field; iOS still allows pinch-zoom, other platforms would not.
-  (function(){
-    var ua = navigator.userAgent || '';
-    var isIOS = /iPad|iPhone|iPod/.test(ua) || (/Macintosh/.test(ua) && navigator.maxTouchPoints > 1);
-    var vp = document.querySelector('meta[name="viewport"]');
-    if (isIOS && vp) vp.setAttribute('content', vp.getAttribute('content') + ', maximum-scale=1');
-  })();
   (function(){
     try {
       var t = JSON.parse(localStorage.getItem('odysseus-theme'));
diff --git a/static/js/init.js b/static/js/init.js
index e554deaa7..516cbe186 100644
--- a/static/js/init.js
+++ b/static/js/init.js
@@ -379,7 +379,6 @@ document.addEventListener('DOMContentLoaded', markComposerUserEdited, { once: tr
       root.classList.toggle('keyboard-open', keyboardOpen);
       if (keyboardOpen) root.style.setProperty('--keyboard-viewport-height', vv.height + 'px');
       else root.style.removeProperty('--keyboard-viewport-height');
-      if (window.scrollY) window.scrollTo(0, 0);
     };
     // iOS fires visualViewport resize only once, mid-animation, and no focusin when
     // the tapped field already had focus (e.g. the composer after a new chat)
@@ -392,7 +391,6 @@ document.addEventListener('DOMContentLoaded', markComposerUserEdited, { once: tr
     window.visualViewport.addEventListener('scroll', _syncKeyboardViewport);
     document.addEventListener('focusin', _syncThroughKeyboardAnimation);
     document.addEventListener('focusout', _syncThroughKeyboardAnimation);
-    window.addEventListener('scroll', () => { if (window.scrollY) window.scrollTo(0, 0); }, { passive: true });
 
     let _lastVVHeight = window.visualViewport.height;
     window.visualViewport.addEventListener('resize', function() {
diff --git a/static/js/windowResize.js b/static/js/windowResize.js
index b71feac51..33469d3ed 100644
--- a/static/js/windowResize.js
+++ b/static/js/windowResize.js
@@ -267,8 +267,9 @@ export function makeWindowResizable(content, options = {}) {
           content.style.maxWidth = 'none';
           content.style.maxHeight = 'none';
           const left = parseFloat(content.style.left);
-          if (Number.isFinite(left) && left + w > window.innerWidth - padRight) {
-            content.style.left = Math.max(padLeft, window.innerWidth - padRight - w) + 'px';
+          if (Number.isFinite(left)) {
+            const rightmostLeft = Math.max(padLeft, window.innerWidth - padRight - w);
+            content.style.left = Math.max(padLeft, Math.min(left, rightmostLeft)) + 'px';
           }
         }
       } catch (_) {}
diff --git a/tests/e2e/README.md b/tests/e2e/README.md
index 859bf6b9d..9bd7c127f 100644
--- a/tests/e2e/README.md
+++ b/tests/e2e/README.md
@@ -1,5 +1,7 @@
 # Browser End-to-End Tests
 
+## Photo Editor Release Gate
+
 The photo editor release gate launches an isolated Odysseus server on port
 `7013` with a temporary SQLite database and disposable authenticated account.
 
@@ -18,3 +20,53 @@ The disposable account is created in the temporary data directory and exercises
 owner-scoped draft and notification routes without using an existing account.
 `PHOTO_EDITOR_E2E_AUTH=0` selects the legacy unauthenticated configuration for
 investigating it; offline-upgrade coverage requires the authenticated mode.
+
+## Mobile and iOS Layout Suite
+
+The dedicated mobile and iOS layout suite exercises viewport behavior,
+accessibility zoom, scrolling, mobile safe-area geometry (Notes and Documents
+panes), and floating window restoration against an isolated local Odysseus server
+running on port `17739`.
+
+```bash
+npm install
+npm run test:ios-layout:chromium
+```
+
+### Profiles and Browser Prerequisites
+
+- **Chromium profiles** (`desktop-chromium`, `phone-chromium-portrait`, `phone-chromium-landscape`, `tablet-chromium`):
+  Provide automated baseline coverage in CI and local development without requiring
+  WebKit dependencies.
+- **WebKit profiles** (`phone-webkit-portrait`, `phone-webkit-landscape`, `tablet-webkit`):
+  Used for platform-oriented WebKit rendering validation. WebKit requires browser binaries:
+
+```bash
+npm run test:ios-layout:install
+# or: npx playwright install webkit
+npm run test:ios-layout:webkit
+```
+
+To run all installed profiles:
+
+```bash
+npm run test:ios-layout
+```
+
+### Evidence and Cleanup
+
+- **Evidence artifacts**: Screenshots are written to `test-results/ios-layout/` by
+  default and traces are written to `test-results/ios-layout-traces/`. Both paths
+  are git-ignored. Set `ODYSSEUS_LAYOUT_EVIDENCE_DIR` to override the screenshot
+  output path.
+- **Teardown**: Disposable application state and database files created in the
+  OS temporary directory are automatically cleaned up on both normal and failure
+  teardown, preserving diagnostic screenshots and failure traces.
+
+### Platform Considerations
+
+Emulated Chromium and WebKit viewports validate deterministic CSS cascade,
+computed layout geometry, viewport meta tags, and JavaScript restoration. However,
+browser emulation is not a physical device substitute: physical iOS Safari and
+standalone installed PWAs should still be verified separately for native gesture
+pinch-zoom, software keyboard dismissal transitions, and dynamic hardware notch/island insets.
diff --git a/tests/e2e/ios-layout-teardown.cjs b/tests/e2e/ios-layout-teardown.cjs
new file mode 100644
index 000000000..5c42374dd
--- /dev/null
+++ b/tests/e2e/ios-layout-teardown.cjs
@@ -0,0 +1,28 @@
+const fs = require('node:fs');
+const os = require('node:os');
+const path = require('node:path');
+
+/**
+ * Global teardown for the iOS/mobile layout Playwright test suite.
+ * Cleans up only disposable temporary application data directories,
+ * preserving diagnostic artifacts (screenshots and failure traces) in test-results/.
+ */
+module.exports = async () => {
+  const dataDirectory = process.env.ODYSSEUS_LAYOUT_DATA_DIR;
+  if (!dataDirectory || typeof dataDirectory !== 'string') return;
+
+  try {
+    const resolvedData = path.resolve(dataDirectory);
+    const allowedTmpBases = [os.tmpdir(), '/var/tmp', '/tmp'].map(b => path.resolve(b));
+    const isTmp = allowedTmpBases.some(base => resolvedData.startsWith(base + path.sep));
+    const baseName = path.basename(resolvedData);
+
+    if (isTmp && (baseName.startsWith('odysseus-ios-layout-') || baseName.startsWith('odysseus-pr6396-'))) {
+      if (fs.existsSync(resolvedData)) {
+        fs.rmSync(resolvedData, { recursive: true, force: true });
+      }
+    }
+  } catch (err) {
+    console.warn(`[ios-layout-teardown] Warning: failed to clean temporary runtime dir: ${err.message}`);
+  }
+};
diff --git a/tests/e2e/ios-layout.config.cjs b/tests/e2e/ios-layout.config.cjs
new file mode 100644
index 000000000..73d2707ed
--- /dev/null
+++ b/tests/e2e/ios-layout.config.cjs
@@ -0,0 +1,148 @@
+// Tests against the running Odysseus app, not a static mock page.
+const fs = require('node:fs');
+const os = require('node:os');
+const path = require('node:path');
+const { defineConfig } = require('@playwright/test');
+
+const repositoryRoot = path.resolve(__dirname, '../..');
+const port = Number(process.env.ODYSSEUS_LAYOUT_PORT || '17739');
+const baseURL = `http://127.0.0.1:${port}`;
+const defaultPython = process.platform === 'win32'
+  ? path.join(repositoryRoot, '.venv', 'Scripts', 'python.exe')
+  : path.join(repositoryRoot, '.venv', 'bin', 'python');
+const python = process.env.ODYSSEUS_TEST_PYTHON
+  || (fs.existsSync(defaultPython) ? defaultPython : 'python3');
+
+const dataDirectory = process.env.ODYSSEUS_LAYOUT_DATA_DIR
+  || fs.mkdtempSync(path.join(os.tmpdir(), 'odysseus-ios-layout-'));
+process.env.ODYSSEUS_LAYOUT_DATA_DIR = dataDirectory;
+
+// Default evidence directory to repository-relative test-results/ios-layout
+// while preserving the environment-variable override if provided.
+const evidenceDir = process.env.ODYSSEUS_LAYOUT_EVIDENCE_DIR
+  || path.join(repositoryRoot, 'test-results', 'ios-layout');
+const outputDir = path.join(repositoryRoot, 'test-results', 'ios-layout-traces');
+
+// Emergency process-exit cleanup for disposable application runtime state
+const cleanDataDirSync = () => {
+  const dir = process.env.ODYSSEUS_LAYOUT_DATA_DIR;
+  if (!dir || typeof dir !== 'string') return;
+  try {
+    const resolved = path.resolve(dir);
+    const allowed = [os.tmpdir(), '/var/tmp', '/tmp'].map(b => path.resolve(b));
+    if (allowed.some(base => resolved.startsWith(base + path.sep))) {
+      const baseName = path.basename(resolved);
+      if (baseName.startsWith('odysseus-ios-layout-') || baseName.startsWith('odysseus-pr6396-')) {
+        if (fs.existsSync(resolved)) {
+          fs.rmSync(resolved, { recursive: true, force: true });
+        }
+      }
+    }
+  } catch (_) {}
+};
+
+process.once('SIGINT', () => { cleanDataDirSync(); process.exit(130); });
+process.once('SIGTERM', () => { cleanDataDirSync(); process.exit(143); });
+
+function isWebKitInstalled() {
+  try {
+    const { webkit } = require('@playwright/test');
+    return fs.existsSync(webkit.executablePath());
+  } catch (_) {
+    return false;
+  }
+}
+
+const chromiumProjects = [
+  {
+    name: 'desktop-chromium',
+    use: { browserName: 'chromium', viewport: { width: 1440, height: 900 } },
+  },
+  {
+    name: 'phone-chromium-portrait',
+    use: { browserName: 'chromium', viewport: { width: 390, height: 844 }, hasTouch: true, isMobile: true },
+  },
+  {
+    name: 'phone-chromium-landscape',
+    use: { browserName: 'chromium', viewport: { width: 844, height: 390 }, hasTouch: true, isMobile: true },
+  },
+  {
+    name: 'tablet-chromium',
+    use: { browserName: 'chromium', viewport: { width: 820, height: 1000 }, hasTouch: true, isMobile: true },
+  },
+];
+
+const webkitProjects = [
+  {
+    name: 'phone-webkit-portrait',
+    use: { browserName: 'webkit', viewport: { width: 390, height: 844 }, hasTouch: true, isMobile: true },
+  },
+  {
+    name: 'phone-webkit-landscape',
+    use: { browserName: 'webkit', viewport: { width: 844, height: 390 }, hasTouch: true, isMobile: true },
+  },
+  {
+    name: 'tablet-webkit',
+    use: { browserName: 'webkit', viewport: { width: 820, height: 1000 }, hasTouch: true, isMobile: true },
+  },
+];
+
+// Determine active projects based on environment and local browser availability
+const requestedBrowser = (process.env.ODYSSEUS_LAYOUT_BROWSER || 'all').toLowerCase();
+let selectedProjects = [];
+
+if (requestedBrowser === 'chromium') {
+  selectedProjects = chromiumProjects;
+} else if (requestedBrowser === 'webkit') {
+  selectedProjects = webkitProjects;
+} else {
+  // 'all': Include chromium always; include webkit if installed or if explicitly targeted via cli args
+  const hasCliWebKitTarget = process.argv.some(arg => arg.toLowerCase().includes('webkit'));
+  if (isWebKitInstalled() || hasCliWebKitTarget) {
+    selectedProjects = [...chromiumProjects, ...webkitProjects];
+  } else {
+    // Only Chromium is available locally (e.g. standard CI / default runner)
+    selectedProjects = chromiumProjects;
+  }
+}
+
+module.exports = defineConfig({
+  testDir: path.join(__dirname, 'ios-layout'),
+  testMatch: ['**/*.spec.cjs'],
+  outputDir,
+  timeout: 90_000,
+  expect: { timeout: 15_000 },
+  retries: 0,
+  workers: 1,
+  reporter: [['line']],
+  globalTeardown: require.resolve('./ios-layout-teardown.cjs'),
+  use: {
+    baseURL,
+    headless: true,
+    serviceWorkers: 'block',
+    screenshot: 'only-on-failure',
+    trace: 'retain-on-failure',
+  },
+  projects: selectedProjects,
+  metadata: { evidenceDir },
+  webServer: {
+    command: `${JSON.stringify(python)} -m uvicorn app:app --host 127.0.0.1 --port ${port}`,
+    cwd: repositoryRoot,
+    url: baseURL,
+    timeout: 120_000,
+    reuseExistingServer: false,
+    env: {
+      ...process.env,
+      AUTH_ENABLED: 'false',
+      // Never connect the disposable app to the host's real ChromaDB.
+      CHROMADB_HOST: '127.0.0.1',
+      CHROMADB_PORT: String(port + 1),
+      LLM_HOST: '127.0.0.1',
+      EMBEDDING_URL: `http://127.0.0.1:${port + 1}/v1/embeddings`,
+      DATABASE_URL: `sqlite:///${path.join(dataDirectory, 'app.db')}`,
+      ODYSSEUS_DATA_DIR: dataDirectory,
+      ODYSSEUS_STARTUP_WARMUPS: '0',
+      RESPONSE_COMPRESSION_ENABLED: 'false',
+    },
+  },
+});
diff --git a/tests/e2e/ios-layout/postmerge-layout.spec.cjs b/tests/e2e/ios-layout/postmerge-layout.spec.cjs
new file mode 100644
index 000000000..42f420032
--- /dev/null
+++ b/tests/e2e/ios-layout/postmerge-layout.spec.cjs
@@ -0,0 +1,313 @@
+const { test, expect } = require('@playwright/test');
+const fs = require('node:fs');
+const path = require('node:path');
+
+async function openApp(page) {
+  const response = await page.goto('/', { waitUntil: 'domcontentloaded' });
+  expect(response?.ok()).toBeTruthy();
+  // The runtime currently produces two #message nodes. Select the
+  // initialized composer while diagnosing whether both are visible.
+  const composers = await page.locator('textarea#message').evaluateAll(nodes =>
+    nodes.map((el, index) => ({
+      index,
+      initialized: el.dataset.startupPreserveBound === '1',
+      visible: !!el.getClientRects().length &&
+        getComputedStyle(el).visibility !== 'hidden',
+      parent: el.parentElement?.className || '',
+    }))
+  );
+  if (composers.length !== 1) {
+    console.log('Composer DOM diagnostic:', JSON.stringify(composers));
+  }
+  const activeComposer = page.locator(
+    'textarea#message[data-startup-preserve-bound="1"]'
+  );
+  await expect(activeComposer).toHaveCount(1);
+  await expect(activeComposer).toBeVisible();
+  expect(
+    composers.filter(composer => composer.visible).length,
+    'Exactly one composer should be visible'
+  ).toBe(1);
+}
+
+function isMobileViewport(testInfo) {
+  const width = testInfo.project.use?.viewport?.width || 0;
+  return width > 0 && width <= 768;
+}
+
+/**
+ * Reach Settings through genuine UI controls on either desktop or mobile viewports.
+ * On mobile (<=768px), the rail is hidden and the sidebar must be opened via hamburger.
+ */
+async function openSettings(page, isMobile) {
+  let settingsButton;
+  if (isMobile) {
+    const hamburger = page.locator('#hamburger-btn:visible').first();
+    await expect(hamburger, 'Hamburger button must be visible on mobile').toBeVisible({ timeout: 5000 });
+    await hamburger.click();
+    const sidebar = page.locator('#sidebar:not(.hidden)');
+    await expect(sidebar, 'Sidebar must open upon hamburger tap').toBeVisible({ timeout: 5000 });
+    await page.waitForTimeout(300);
+    settingsButton = sidebar.locator('#user-bar-settings');
+  } else {
+    settingsButton = page.locator('#rail-settings:visible, #user-bar-settings:visible').first();
+  }
+
+  await expect(settingsButton, 'Settings button must be reachable and visible').toBeVisible({ timeout: 5000 });
+  await settingsButton.click();
+  const dialog = page.locator('#settings-modal');
+  await expect(dialog, 'Settings modal must become visible').toBeVisible({ timeout: 5000 });
+  return dialog;
+}
+
+/**
+ * Reach Notes through genuine UI controls on either desktop or mobile viewports.
+ */
+async function openNotes(page, isMobile) {
+  let notesButton;
+  if (isMobile) {
+    const hamburger = page.locator('#hamburger-btn:visible').first();
+    await expect(hamburger, 'Hamburger button must be visible on mobile').toBeVisible({ timeout: 5000 });
+    await hamburger.click();
+    const sidebar = page.locator('#sidebar:not(.hidden)');
+    await expect(sidebar, 'Sidebar must open upon hamburger tap').toBeVisible({ timeout: 5000 });
+    await page.waitForTimeout(300);
+    notesButton = sidebar.locator('#tool-notes-btn');
+  } else {
+    notesButton = page.locator('#rail-notes:visible, #tool-notes-btn:visible').first();
+  }
+
+  await expect(notesButton, 'Notes button must be reachable and visible').toBeVisible({ timeout: 5000 });
+  await notesButton.click();
+  const realNotes = page.locator('.notes-pane').first();
+  await expect(realNotes, 'Notes pane must become visible').toBeVisible({ timeout: 5000 });
+  return realNotes;
+}
+
+/**
+ * Reach Document editor through genuine UI controls on either desktop or mobile viewports.
+ */
+async function openDocument(page, isMobile) {
+  let docButton;
+  if (isMobile) {
+    const hamburger = page.locator('#hamburger-btn:visible').first();
+    await expect(hamburger, 'Hamburger button must be visible on mobile').toBeVisible({ timeout: 5000 });
+    await hamburger.click();
+    const sidebar = page.locator('#sidebar:not(.hidden)');
+    await expect(sidebar, 'Sidebar must open upon hamburger tap').toBeVisible({ timeout: 5000 });
+    await page.waitForTimeout(300);
+    docButton = sidebar.locator('#library-new-doc-btn');
+  } else {
+    docButton = page.locator('#library-new-doc-btn:visible').first();
+    if (!(await docButton.count())) {
+      const hamburger = page.locator('#hamburger-btn:visible').first();
+      if (await hamburger.count()) {
+        await hamburger.click();
+        await page.waitForTimeout(300);
+        docButton = page.locator('#sidebar:not(.hidden) #library-new-doc-btn');
+      }
+    }
+  }
+
+  await expect(docButton, 'Document creation button must be reachable and visible').toBeVisible({ timeout: 5000 });
+  await docButton.click();
+  const docPane = page.locator('.doc-editor-pane').first();
+  await expect(docPane, 'Document editor pane must become visible').toBeVisible({ timeout: 10000 });
+  return docPane;
+}
+
+test('renders actual Odysseus UI and captures review screenshots', async ({ page }, testInfo) => {
+  await openApp(page);
+  const out = testInfo.config.metadata.evidenceDir;
+  fs.mkdirSync(out, { recursive: true });
+  const name = testInfo.project.name;
+  const isMobile = isMobileViewport(testInfo);
+
+  // 1. Chat screenshot (default view)
+  await page.screenshot({ path: path.join(out, `${name}-chat.png`), fullPage: false, animations: 'disabled' });
+
+  // 2. Settings screenshot via actual user-visible navigation
+  await openApp(page);
+  await openSettings(page, isMobile);
+  await page.screenshot({ path: path.join(out, `${name}-settings.png`), fullPage: false, animations: 'disabled' });
+
+  // 3. Notes screenshot via actual user-visible navigation
+  await openApp(page);
+  await openNotes(page, isMobile);
+  await page.screenshot({ path: path.join(out, `${name}-notes.png`), fullPage: false, animations: 'disabled' });
+
+  testInfo.annotations.push({ type: 'evidence', description: out });
+});
+
+test('viewport meta does not restrict user zoom', async ({ page }) => {
+  await openApp(page);
+  const meta = await page.locator('meta[name="viewport"]').getAttribute('content');
+  expect(meta || '').not.toMatch(/maximum-scale\s*=\s*1(?:\b|\.)/i);
+  expect(meta || '').not.toMatch(/user-scalable\s*=\s*no/i);
+});
+
+test('browser-owned window scrolling is not globally reset', async ({ page }) => {
+  await openApp(page);
+  const value = await page.evaluate(async () => {
+    document.documentElement.style.overflowY = 'auto';
+    document.body.style.overflowY = 'auto';
+    document.body.style.height = 'auto';
+    document.body.style.minHeight = '3200px';
+    const spacer = document.createElement('div');
+    spacer.style.cssText = 'position:absolute;top:3100px;width:1px;height:10px;pointer-events:none;';
+    document.body.appendChild(spacer);
+    window.scrollTo(0, 250);
+    await new Promise(resolve => setTimeout(resolve, 150));
+    return window.scrollY;
+  });
+  expect(value).toBeGreaterThan(100);
+});
+
+test('CSS cascade rules for mobile Notes and Documents respect safe areas', async ({ page }, testInfo) => {
+  test.skip(!isMobileViewport(testInfo), 'Only mobile viewports <=768px');
+  await openApp(page);
+  const results = await page.evaluate(() => {
+    document.documentElement.style.setProperty('--safe-top', '44px');
+    document.documentElement.style.setProperty('--sheet-top', '68px');
+    document.documentElement.style.setProperty('--app-height', '844px');
+    const values = {};
+    for (const [key, bodyClass, paneClass] of [
+      ['notes', 'notes-view', 'notes-pane'],
+      ['document', 'doc-view', 'doc-editor-pane'],
+    ]) {
+      const pane = document.createElement('section');
+      pane.className = paneClass;
+      pane.style.opacity = '0'; // CSS cascade regression check
+      document.body.appendChild(pane);
+      document.body.classList.add(bodyClass);
+      const style = window.getComputedStyle(pane);
+      values[key] = {
+        top: style.top,
+        height: style.height,
+        insetTop: pane.getBoundingClientRect().top,
+      };
+      pane.remove();
+      document.body.classList.remove(bodyClass);
+    }
+    return values;
+  });
+  for (const key of ['notes', 'document']) {
+    expect(results[key].top, key).toBe('68px');
+    expect(parseFloat(results[key].height), key).toBeGreaterThanOrEqual(770);
+  }
+});
+
+test('real Notes and Document panes honor safe-area geometry in the live application', async ({ page }, testInfo) => {
+  const isMobile = isMobileViewport(testInfo);
+  test.skip(!isMobile, 'Only mobile viewports <=768px');
+  await openApp(page);
+
+  // Configure simulated safe-area insets (e.g. iPhone notch / Dynamic Island)
+  await page.evaluate(() => {
+    document.documentElement.style.setProperty('--safe-top', '44px');
+    document.documentElement.style.setProperty('--sheet-top', '68px');
+    document.documentElement.style.setProperty('--app-height', '844px');
+  });
+
+  // 1. Verify actual Notes UI
+  const realNotes = await openNotes(page, isMobile);
+  const notesMetrics = await realNotes.evaluate(el => {
+    const style = window.getComputedStyle(el);
+    const rect = el.getBoundingClientRect();
+    return {
+      top: style.top,
+      height: style.height,
+      maxHeight: style.maxHeight,
+      rectTop: rect.top,
+      rectHeight: rect.height,
+    };
+  });
+
+  expect(notesMetrics.top, 'Real Notes pane top must match --sheet-top').toBe('68px');
+  expect(parseFloat(notesMetrics.height), 'Real Notes pane height must respect safe area').toBeGreaterThanOrEqual(770);
+  expect(notesMetrics.rectTop, 'Real Notes pane must not overlap the 44px safe-area top notch').toBeGreaterThanOrEqual(44);
+
+  // 2. Verify actual Document UI
+  await openApp(page);
+  await page.evaluate(() => {
+    document.documentElement.style.setProperty('--safe-top', '44px');
+    document.documentElement.style.setProperty('--sheet-top', '68px');
+    document.documentElement.style.setProperty('--app-height', '844px');
+  });
+
+  const realDoc = await openDocument(page, isMobile);
+  const docMetrics = await realDoc.evaluate(el => {
+    const style = window.getComputedStyle(el);
+    const rect = el.getBoundingClientRect();
+    return {
+      top: style.top,
+      height: style.height,
+      maxHeight: style.maxHeight,
+      rectTop: rect.top,
+      rectHeight: rect.height,
+    };
+  });
+
+  expect(docMetrics.top, 'Real Document pane top must match --sheet-top').toBe('68px');
+  expect(parseFloat(docMetrics.height), 'Real Document pane height must respect safe area').toBeGreaterThanOrEqual(770);
+  expect(docMetrics.rectTop, 'Real Document pane must not overlap the 44px safe-area top notch').toBeGreaterThanOrEqual(44);
+});
+
+test('restored floating windows clamp away from a left safe area', async ({ page }, testInfo) => {
+  test.skip(isMobileViewport(testInfo), 'Geometry test uses desktop resizable windows');
+  await openApp(page);
+  const value = await page.evaluate(async () => {
+    document.documentElement.style.setProperty('--safe-left', '58px');
+    document.body.style.setProperty('padding-left', '58px', 'important');
+    const probe = document.createElement('div');
+    probe.style.cssText = 'position:fixed;left:10px;top:80px;width:420px;height:250px;z-index:999999;';
+    document.body.appendChild(probe);
+    const key = 'odysseus-layout-restore-test';
+    localStorage.setItem(key, JSON.stringify({ w: 480, h: 280 }));
+    try {
+      // Body horizontal padding transitions over 160ms. Wait for the
+      // simulated safe-area change to settle before restoring geometry.
+      await new Promise(resolve => setTimeout(resolve, 300));
+
+      const padAtRestore = parseFloat(
+        getComputedStyle(document.body).paddingLeft
+      );
+
+      if (Math.abs(padAtRestore - 58) > 0.5) {
+        throw new Error(
+          `Safe-area fixture did not settle: ${padAtRestore}px`
+        );
+      }
+
+      // Verify the running server actually serves the patched module.
+      const response = await fetch(
+        '/static/js/windowResize.js',
+        { cache: 'no-store' }
+      );
+      if (!response.ok) {
+        throw new Error('Cannot fetch windowResize.js');
+      }
+      const moduleSource = await response.text();
+      if (!moduleSource.includes('const rightmostLeft = Math.max(padLeft')) {
+        throw new Error('Running server is serving unpatched windowResize.js');
+      }
+
+      const { makeWindowResizable } = await import('/static/js/windowResize.js');
+      makeWindowResizable(probe, { storageKey: key, mobileSkip: 768 });
+      await new Promise(resolve => setTimeout(resolve, 300));
+      return {
+        left: parseFloat(probe.style.left),
+        width: parseFloat(probe.style.width),
+        paddingLeft: parseFloat(getComputedStyle(document.body).paddingLeft),
+        viewportWidth: window.innerWidth,
+      };
+    } finally {
+      localStorage.removeItem(key);
+      probe.remove();
+    }
+  });
+
+  expect(value.paddingLeft).toBeGreaterThanOrEqual(58);
+  expect(value.width).toBe(480);
+  expect(value.left).toBeGreaterThanOrEqual(value.paddingLeft);
+});