From 64dff466085d8701ca5d7ccdd6e98c573452d1ba Mon Sep 17 00:00:00 2001
From: Cursor Agent <cursoragent@cursor.com>
Date: Fri, 4 Sep 2026 23:51:57 +0000
Subject: [PATCH 1/2] fix(pwa): require native install prompt

Co-authored-by: Roshan Raj Mishra <mishra.roshanraj@gmail.com>
---
 CHANGELOG.md          |  7 +++++++
 README.md             |  4 ++--
 index.html            |  2 +-
 js/pwa-install.js     | 33 ++++++++++++++++++++-------------
 js/ui.js              |  2 +-
 scripts/check-pwa.mjs | 12 +++++++++++-
 specs/pwa.md          |  7 ++++---
 sw.js                 |  2 +-
 8 files changed, 47 insertions(+), 22 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index d630617..cdbe974 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 All notable changes to FloRo Sign Controller are documented here. Version numbers match `APP_VERSION` in `js/ui.js`. Bump `CACHE_NAME` in `sw.js` when static assets change so installed PWAs pick up updates.
 
+## [2.2.2] - 2026-09-05
+
+### Fixed
+- Match Health Hub's native installation contract: Android and desktop show **Install** only while Chromium supplies `beforeinstallprompt`, and clicking it calls `prompt()` directly.
+- Remove the Android menu-help route that could lead users to **Create shortcut**, which is a Chrome bookmark and not a standalone PWA.
+- Hide Settings > Install App when no native Chromium prompt exists; iOS and already-installed app guidance remain available.
+
 ## [2.2.1] - 2026-09-05
 
 ### Fixed
diff --git a/README.md b/README.md
index d97d7fb..bab6be9 100644
--- a/README.md
+++ b/README.md
@@ -116,11 +116,11 @@ See [`specs/pwa.md`](specs/pwa.md). Short version: **Install** calls the browser
 
 | Platform | Banner | Install button |
 |----------|--------|----------------|
-| **Android (Chrome/Edge)** | Native prompt when available; otherwise immediate honest guidance | Native **Install**, or clearly labeled **Install help** |
+| **Android (Chrome/Edge)** | Native prompt when available; otherwise immediate status guidance | Native **Install** only—never a browser shortcut |
 | **iOS (Safari)** | On first visit (Share → Add to Home Screen copy) | Hidden (Apple has no auto-install) |
 | **Desktop** | Hidden until `beforeinstallprompt` | Native **Install** when Chrome/Edge offers it |
 
-Dismiss **Not now** stores `floro_install_dismissed_v6` for **7 days**. Settings > **Install App** still works (native prompt, or a help sheet). On Android, an installed app appears in the app drawer as **FloRo Sign**; the launcher may not automatically pin it to the Home screen.
+Dismiss **Not now** stores `floro_install_dismissed_v7` for **7 days**. On Android, **Install** appears only when Chrome offers the native standalone-app prompt; FloRo never routes users through **Create shortcut**. An installed app appears in the app drawer as **FloRo Sign**; the launcher may not automatically pin it to the Home screen.
 
 ## Assets
 
diff --git a/index.html b/index.html
index 782794d..e0660e3 100644
--- a/index.html
+++ b/index.html
@@ -298,7 +298,7 @@ <h3 class="settings-section-title">Activity Log</h3>
 
     <section class="settings-section settings-about">
       <p class="about-line">FloRo Sign Controller</p>
-      <p class="about-version" id="app-version">v2.2.1</p>
+      <p class="about-version" id="app-version">v2.2.2</p>
     </section>
 
     <button id="btn-close-settings" class="btn btn-secondary btn-full" type="button">Done</button>
diff --git a/js/pwa-install.js b/js/pwa-install.js
index 0b993a2..aa93a36 100644
--- a/js/pwa-install.js
+++ b/js/pwa-install.js
@@ -1,6 +1,6 @@
 /** Native PWA install with honest manual and already-installed fallbacks. */
 
-export const DISMISS_KEY = 'floro_install_dismissed_v6';
+export const DISMISS_KEY = 'floro_install_dismissed_v7';
 const DISMISS_TTL_MS = 7 * 24 * 60 * 60 * 1000;
 
 export function isStandalone() {
@@ -63,7 +63,7 @@ function installHelpText(hasNativePrompt, installedPwa) {
     return 'Open this page in Safari, tap Share, then Add to Home Screen.';
   }
   if (isAndroid() && !hasNativePrompt) {
-    return 'Chrome has not offered one-tap install yet. You can still install from the Chrome menu.';
+    return 'Waiting for Chrome’s app installer. Do not create a shortcut—it opens as a browser tab.';
   }
   return 'Install FloRo so it opens full screen, not as a browser tab.';
 }
@@ -112,13 +112,22 @@ export function setupPwaInstall({
       btnInstall.classList.toggle('hidden', !hasNativePrompt || installedPwa);
     }
     if (btnInstallHelp) {
-      btnInstallHelp.textContent = installedPwa ? 'Find app' : 'Install help';
+      btnInstallHelp.textContent = installedPwa ? 'Find app' : 'How to install';
       btnInstallHelp.classList.toggle(
         'hidden',
-        hasNativePrompt || (!installedPwa && !isAndroid() && !isIOS())
+        hasNativePrompt || (!installedPwa && !isIOS())
       );
     }
     btnDismiss?.classList.remove('hidden');
+    syncSettingsInstall();
+  }
+
+  function syncSettingsInstall() {
+    const section = settingsBtn?.closest('.settings-section');
+    if (!section) return;
+    const canInstallOrHelp =
+      !isStandalone() && (Boolean(deferredPrompt) || installedPwa || isIOS());
+    section.classList.toggle('hidden', !canInstallOrHelp);
   }
 
   function renderModalSteps(items) {
@@ -160,14 +169,14 @@ export function setupPwaInstall({
       return;
     }
 
-    modalTitle.textContent = 'Install FloRo Sign';
+    modalTitle.textContent = 'App install not ready';
     modalDesc.textContent =
-      'Chrome can delay or temporarily suppress its one-tap prompt. Manual installation is always available:';
+      'Chrome has not made native app installation available yet. A shortcut is only a bookmark and will keep the browser bar.';
     renderModalSteps([
       'Open this page directly in Chrome or Edge, not an in-app browser',
-      'Tap the three-dot Chrome menu',
-      'Tap Add to Home screen (or Install and create shortcut), then choose Install app',
-      'After installation, swipe up and search your app drawer for FloRo Sign',
+      'Keep the page open briefly and interact with it so Chrome can finish checking the app',
+      'Reload the page and use FloRo’s Install button when it appears',
+      'Do not choose Create shortcut from Chrome’s menu',
     ]);
   }
 
@@ -217,6 +226,7 @@ export function setupPwaInstall({
   } else {
     hideBanner();
   }
+  syncSettingsInstall();
 
   window.addEventListener('appinstalled', () => {
     installedPwa = true;
@@ -224,6 +234,7 @@ export function setupPwaInstall({
     deferredPrompt = null;
     window.__floroDeferredInstall = null;
     showBanner();
+    syncSettingsInstall();
   });
 
   btnInstall?.addEventListener('click', async () => {
@@ -256,10 +267,6 @@ export function setupPwaInstall({
     if (e.target === modal) closeHelpSheet();
   });
 
-  if (settingsBtn && isStandalone()) {
-    settingsBtn.closest('.settings-section')?.classList.add('hidden');
-  }
-
   detectInstalledPwa().then((installed) => {
     if (!installed || isStandalone()) return;
     installedPwa = true;
diff --git a/js/ui.js b/js/ui.js
index 7e5b4c2..77c16b9 100644
--- a/js/ui.js
+++ b/js/ui.js
@@ -1,6 +1,6 @@
 import { formatModeLabel, getModeName, MODE_COUNT } from './mode-names.js';
 
-export const APP_VERSION = '2.2.1';
+export const APP_VERSION = '2.2.2';
 
 export function createLogger(consoleBody) {
   return function log(message, type = 'info') {
diff --git a/scripts/check-pwa.mjs b/scripts/check-pwa.mjs
index 68dc8ea..76de08d 100644
--- a/scripts/check-pwa.mjs
+++ b/scripts/check-pwa.mjs
@@ -42,7 +42,7 @@ if (!html.includes('id="btn-install"') || !html.includes('install-banner-action-
   fail('Install button must start hidden until a native prompt exists');
 }
 if (!html.includes('id="btn-install-help"')) {
-  fail('Android needs an honest manual-install fallback when Chrome withholds prompt()');
+  fail('install help is required for iOS and already-installed app guidance');
 }
 if (!html.includes("updateViaCache: 'none'")) {
   fail('service worker registration must bypass stale HTTP caches');
@@ -138,6 +138,16 @@ if (!nativeInstallHandler.includes('triggerNativeInstall') ||
 if (!pwaSrc.includes("btnInstall.classList.toggle('hidden', !hasNativePrompt || installedPwa)")) {
   fail('Install button visibility must follow hasNativePrompt');
 }
+if (!pwaSrc.includes("hasNativePrompt || (!installedPwa && !isIOS())")) {
+  fail('Android must not show a manual install action without the native prompt');
+}
+if (!pwaSrc.includes('syncSettingsInstall')) {
+  fail('Settings install action must be hidden until native install or valid platform help exists');
+}
+if (pwaSrc.includes('Install and create shortcut') ||
+    pwaSrc.includes('Tap the three-dot Chrome menu')) {
+  fail('Android install guidance must never route users into Chrome shortcut creation');
+}
 
 if (!process.exitCode) {
   console.log('check-pwa: ok');
diff --git a/specs/pwa.md b/specs/pwa.md
index 024251a..ded0797 100644
--- a/specs/pwa.md
+++ b/specs/pwa.md
@@ -61,15 +61,15 @@ Module: `js/pwa-install.js`. Early capture in `index.html` (before other scripts
 | Situation | Banner | Install button | Click |
 |-----------|--------|----------------|-------|
 | `beforeinstallprompt` fired | Show | Show | `event.prompt()` only |
-| Android, no native event | Show immediately (honest copy) | **Install help** | Chrome menu instructions |
+| Android, no native event | Show immediately (honest copy) | Hidden | Wait for native eligibility; never create a shortcut |
 | Android, PWA already installed | Show find-app copy | **Find app** | App-drawer instructions |
 | iOS, not standalone | Show (Share → A2HS copy) | **Install help** | Share → Add to Home Screen instructions |
 | Desktop, no event | Hidden | Hidden | Settings help sheet only |
 | Already standalone | Hidden | Hidden | Settings install row hidden |
 
-Dismiss **Not now** writes `localStorage` `floro_install_dismissed_v6` with a 7-day TTL. Settings → **Install App** ignores dismiss: native `prompt()` if held, otherwise the help sheet. A self-reference in `related_applications` lets supporting Chrome versions distinguish “prompt unavailable” from “already installed.” Android launchers may install into the app drawer without pinning a Home screen icon, so the installed help names both **FloRo Sign** and the old **FloRo** short name.
+Dismiss **Not now** writes `localStorage` `floro_install_dismissed_v7` with a 7-day TTL. On Android and desktop, Settings → **Install App** is visible only while a native prompt is held or an existing installation was detected. It never directs users into Chrome’s **Create shortcut** flow, which creates a browser bookmark instead of a standalone app. A self-reference in `related_applications` lets supporting Chrome versions distinguish “prompt unavailable” from “already installed.” Android launchers may install into the app drawer without pinning a Home screen icon, so the installed help names both **FloRo Sign** and the old **FloRo** short name.
 
-`preventDefault` on `beforeinstallprompt` is required to call `prompt()` later. The in-page **Install** button must call that event directly. If Chrome does not emit the event (for example, after a recent dismissal), the separately labeled **Install help** action may explain the manual menu route; it must never pretend to invoke native installation.
+`preventDefault` on `beforeinstallprompt` is required to call `prompt()` later. The in-page **Install** button must call that event directly. If Chrome does not emit the event, FloRo must not offer an Android install action. **Create shortcut** is not an installation and must never be presented as a fallback.
 
 ## Verification
 
@@ -83,5 +83,6 @@ Manual: Chrome or Edge on Android, https://rawshn.com/sign-controller/, tap **In
 
 | Date | Change |
 |------|--------|
+| 2026-09-05 | Removed Android shortcut flow; only native `beforeinstallprompt` can expose Install |
 | 2026-09-05 | Register SW immediately, detect existing installs, add honest manual fallback, and make cached launches fast |
 | 2026-09-05 | Reimplemented to match Health Hub: native prompt only, static manifest, relative scope |
diff --git a/sw.js b/sw.js
index faa3c22..db94448 100644
--- a/sw.js
+++ b/sw.js
@@ -1,4 +1,4 @@
-const CACHE_NAME = 'floro-controller-v62';
+const CACHE_NAME = 'floro-controller-v63';
 const ASSETS = [
   './',
   './index.html',

From ca0b2aa56e0a6364c3b69b9ae51e3bb8a2199e87 Mon Sep 17 00:00:00 2001
From: Cursor Agent <cursoragent@cursor.com>
Date: Fri, 4 Sep 2026 23:55:16 +0000
Subject: [PATCH 2/2] fix(pwa): match Health Hub installer exactly

Co-authored-by: Roshan Raj Mishra <mishra.roshanraj@gmail.com>
---
 CHANGELOG.md          |  4 ++-
 index.html            |  1 -
 js/app.js             |  1 -
 js/pwa-install.js     | 66 ++++++-------------------------------------
 manifest.webmanifest  |  8 +-----
 scripts/check-pwa.mjs | 22 +++++++--------
 specs/pwa.md          | 11 +++-----
 sw.js                 |  2 +-
 8 files changed, 27 insertions(+), 88 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index cdbe974..dfd06f0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,9 @@ All notable changes to FloRo Sign Controller are documented here. Version number
 ### Fixed
 - Match Health Hub's native installation contract: Android and desktop show **Install** only while Chromium supplies `beforeinstallprompt`, and clicking it calls `prompt()` directly.
 - Remove the Android menu-help route that could lead users to **Create shortcut**, which is a Chrome bookmark and not a standalone PWA.
-- Hide Settings > Install App when no native Chromium prompt exists; iOS and already-installed app guidance remain available.
+- Hide Settings > Install App when no native Chromium prompt exists; iOS guidance remains available.
+- Remove the separate install-help control, self-referential `related_applications`, and installed-app detection for strict Health Hub parity.
+- Restore the canonical production manifest ID used by Health Hub's identity pattern.
 
 ## [2.2.1] - 2026-09-05
 
diff --git a/index.html b/index.html
index e0660e3..baa8b9c 100644
--- a/index.html
+++ b/index.html
@@ -249,7 +249,6 @@
       <p id="install-banner-subtitle" class="install-banner-subtitle">Install FloRo so it opens full screen, not as a browser tab.</p>
       <div class="install-banner-actions">
         <button id="btn-install" class="btn btn-primary install-banner-action install-banner-action-primary hidden" type="button">Install</button>
-        <button id="btn-install-help" class="btn btn-primary install-banner-action install-banner-action-primary hidden" type="button">Install help</button>
         <button id="btn-dismiss-install" class="btn btn-secondary install-banner-action install-banner-action-dismiss" type="button">Not now</button>
       </div>
     </div>
diff --git a/js/app.js b/js/app.js
index 56a9502..e98b2cb 100644
--- a/js/app.js
+++ b/js/app.js
@@ -1190,7 +1190,6 @@ setupPwaInstall({
   bannerTitle: document.getElementById('install-banner-title'),
   bannerSubtitle: document.getElementById('install-banner-subtitle'),
   btnInstall: document.getElementById('btn-install'),
-  btnInstallHelp: document.getElementById('btn-install-help'),
   btnDismiss: document.getElementById('btn-dismiss-install'),
   settingsBtn: document.getElementById('btn-settings-install'),
   modal: document.getElementById('install-modal'),
diff --git a/js/pwa-install.js b/js/pwa-install.js
index aa93a36..0b0aaea 100644
--- a/js/pwa-install.js
+++ b/js/pwa-install.js
@@ -43,22 +43,7 @@ function shouldSuppressBanner() {
   return isStandalone() || isDismissed();
 }
 
-async function detectInstalledPwa() {
-  if (isStandalone()) return true;
-  if (!('getInstalledRelatedApps' in navigator)) return false;
-
-  try {
-    const apps = await navigator.getInstalledRelatedApps();
-    return apps.some((app) => app.platform === 'webapp');
-  } catch {
-    return false;
-  }
-}
-
-function installHelpText(hasNativePrompt, installedPwa) {
-  if (installedPwa) {
-    return 'FloRo Sign is installed. Find it in your Android app drawer; Chrome may not add a Home screen icon.';
-  }
+function installHelpText(hasNativePrompt) {
   if (isIOS() && !hasNativePrompt) {
     return 'Open this page in Safari, tap Share, then Add to Home Screen.';
   }
@@ -73,7 +58,6 @@ export function setupPwaInstall({
   bannerTitle,
   bannerSubtitle,
   btnInstall,
-  btnInstallHelp,
   btnDismiss,
   settingsBtn,
   modal,
@@ -85,7 +69,6 @@ export function setupPwaInstall({
   log,
 }) {
   let deferredPrompt = window.__floroDeferredInstall || null;
-  let installedPwa = isStandalone();
 
   function showBanner() {
     if (!bannerEl || shouldSuppressBanner()) return;
@@ -102,21 +85,14 @@ export function setupPwaInstall({
   function syncBanner() {
     const hasNativePrompt = Boolean(deferredPrompt);
     if (bannerTitle) {
-      bannerTitle.textContent = installedPwa ? 'FloRo Sign is installed' : 'Install FloRo Sign';
+      bannerTitle.textContent = 'Install FloRo Sign';
     }
     if (bannerSubtitle) {
-      bannerSubtitle.textContent = installHelpText(hasNativePrompt, installedPwa);
+      bannerSubtitle.textContent = installHelpText(hasNativePrompt);
     }
     if (btnInstall) {
       btnInstall.textContent = 'Install';
-      btnInstall.classList.toggle('hidden', !hasNativePrompt || installedPwa);
-    }
-    if (btnInstallHelp) {
-      btnInstallHelp.textContent = installedPwa ? 'Find app' : 'How to install';
-      btnInstallHelp.classList.toggle(
-        'hidden',
-        hasNativePrompt || (!installedPwa && !isIOS())
-      );
+      btnInstall.classList.toggle('hidden', !hasNativePrompt);
     }
     btnDismiss?.classList.remove('hidden');
     syncSettingsInstall();
@@ -126,7 +102,7 @@ export function setupPwaInstall({
     const section = settingsBtn?.closest('.settings-section');
     if (!section) return;
     const canInstallOrHelp =
-      !isStandalone() && (Boolean(deferredPrompt) || installedPwa || isIOS());
+      !isStandalone() && (Boolean(deferredPrompt) || isIOS());
     section.classList.toggle('hidden', !canInstallOrHelp);
   }
 
@@ -146,18 +122,6 @@ export function setupPwaInstall({
     modalSteps?.classList.remove('hidden');
     modalAction?.classList.add('hidden');
 
-    if (installedPwa) {
-      modalTitle.textContent = 'Find FloRo Sign';
-      modalDesc.textContent =
-        'Android installs the app in your app drawer, but your launcher may not add it to the Home screen.';
-      renderModalSteps([
-        'Swipe up from your Home screen to open the app drawer',
-        'Search for FloRo Sign (older installs may appear as FloRo)',
-        'Long-press the app icon and drag it to your Home screen',
-      ]);
-      return;
-    }
-
     if (isIOS()) {
       modalTitle.textContent = 'Add to Home Screen';
       modalDesc.textContent = 'iPhone and iPad cannot auto-install. In Safari:';
@@ -186,13 +150,10 @@ export function setupPwaInstall({
 
   async function triggerNativeInstall() {
     if (!deferredPrompt) return false;
-    let accepted = false;
     try {
       deferredPrompt.prompt();
       const { outcome } = await deferredPrompt.userChoice;
       if (outcome === 'accepted') {
-        accepted = true;
-        installedPwa = true;
         log?.('User installed FloRo Sign.', 'success');
       }
     } catch (err) {
@@ -202,15 +163,14 @@ export function setupPwaInstall({
     deferredPrompt = null;
     window.__floroDeferredInstall = null;
     closeHelpSheet();
-    if (accepted) showBanner();
-    else hideBanner();
+    hideBanner();
+    syncSettingsInstall();
     return true;
   }
 
   function capturePrompt(event) {
     event.preventDefault();
     deferredPrompt = event;
-    installedPwa = false;
     window.__floroDeferredInstall = event;
     showBanner();
   }
@@ -229,11 +189,10 @@ export function setupPwaInstall({
   syncSettingsInstall();
 
   window.addEventListener('appinstalled', () => {
-    installedPwa = true;
     log?.('FloRo Sign installed.', 'success');
     deferredPrompt = null;
     window.__floroDeferredInstall = null;
-    showBanner();
+    hideBanner();
     syncSettingsInstall();
   });
 
@@ -241,8 +200,6 @@ export function setupPwaInstall({
     await triggerNativeInstall();
   });
 
-  btnInstallHelp?.addEventListener('click', openHelpSheet);
-
   btnDismiss?.addEventListener('click', () => {
     try {
       localStorage.setItem(DISMISS_KEY, String(Date.now()));
@@ -267,11 +224,4 @@ export function setupPwaInstall({
     if (e.target === modal) closeHelpSheet();
   });
 
-  detectInstalledPwa().then((installed) => {
-    if (!installed || isStandalone()) return;
-    installedPwa = true;
-    deferredPrompt = null;
-    window.__floroDeferredInstall = null;
-    showBanner();
-  });
 }
diff --git a/manifest.webmanifest b/manifest.webmanifest
index a75b601..d3b9df8 100644
--- a/manifest.webmanifest
+++ b/manifest.webmanifest
@@ -4,19 +4,13 @@
   "description": "Control your FloRo neon sign over Bluetooth",
   "start_url": "./",
   "scope": "./",
-  "id": "./",
+  "id": "https://rawshn.com/sign-controller/",
   "display": "standalone",
   "display_override": ["standalone"],
   "orientation": "portrait",
   "background_color": "#020D0A",
   "theme_color": "#020D0A",
   "prefer_related_applications": false,
-  "related_applications": [
-    {
-      "platform": "webapp",
-      "url": "./manifest.webmanifest"
-    }
-  ],
   "launch_handler": {
     "client_mode": ["navigate-existing", "auto"]
   },
diff --git a/scripts/check-pwa.mjs b/scripts/check-pwa.mjs
index 76de08d..898d653 100644
--- a/scripts/check-pwa.mjs
+++ b/scripts/check-pwa.mjs
@@ -41,8 +41,8 @@ if (!html.includes('beforeinstallprompt')) {
 if (!html.includes('id="btn-install"') || !html.includes('install-banner-action-primary hidden')) {
   fail('Install button must start hidden until a native prompt exists');
 }
-if (!html.includes('id="btn-install-help"')) {
-  fail('install help is required for iOS and already-installed app guidance');
+if (html.includes('id="btn-install-help"')) {
+  fail('do not expose a separate install-help action; match Health Hub native prompt flow');
 }
 if (!html.includes("updateViaCache: 'none'")) {
   fail('service worker registration must bypass stale HTTP caches');
@@ -68,8 +68,8 @@ if (manifest) {
   if (manifest.start_url !== './' || manifest.scope !== './') {
     fail('manifest start_url and scope must be "./" (portable across localhost and /sign-controller/)');
   }
-  if (manifest.id !== './') {
-    fail('manifest id must be "./" so it resolves consistently on production and localhost');
+  if (manifest.id !== 'https://rawshn.com/sign-controller/') {
+    fail('manifest id must be the canonical production identity');
   }
   if (manifest.display !== 'standalone') {
     fail('manifest display must be standalone');
@@ -89,10 +89,8 @@ if (manifest) {
   if (!icons.some((i) => i.sizes === '192x192') || !icons.some((i) => i.sizes === '512x512')) {
     fail('manifest needs 192x192 and 512x512 icons');
   }
-  if (!manifest.related_applications?.some(
-    (app) => app.platform === 'webapp' && app.url === './manifest.webmanifest'
-  )) {
-    fail('manifest must self-reference so Android can detect an existing installation');
+  if (manifest.related_applications) {
+    fail('do not self-reference related applications; it is not part of Health Hub installation');
   }
 }
 
@@ -135,15 +133,15 @@ if (!nativeInstallHandler.includes('triggerNativeInstall') ||
     nativeInstallHandler.includes('openHelpSheet')) {
   fail('Install button click must call prompt() only; do not open the help sheet');
 }
-if (!pwaSrc.includes("btnInstall.classList.toggle('hidden', !hasNativePrompt || installedPwa)")) {
+if (!pwaSrc.includes("btnInstall.classList.toggle('hidden', !hasNativePrompt)")) {
   fail('Install button visibility must follow hasNativePrompt');
 }
-if (!pwaSrc.includes("hasNativePrompt || (!installedPwa && !isIOS())")) {
-  fail('Android must not show a manual install action without the native prompt');
-}
 if (!pwaSrc.includes('syncSettingsInstall')) {
   fail('Settings install action must be hidden until native install or valid platform help exists');
 }
+if (pwaSrc.includes('getInstalledRelatedApps')) {
+  fail('do not let installed-app detection clear a valid deferred native prompt');
+}
 if (pwaSrc.includes('Install and create shortcut') ||
     pwaSrc.includes('Tap the three-dot Chrome menu')) {
   fail('Android install guidance must never route users into Chrome shortcut creation');
diff --git a/specs/pwa.md b/specs/pwa.md
index ded0797..a191d93 100644
--- a/specs/pwa.md
+++ b/specs/pwa.md
@@ -30,14 +30,12 @@ No `<base>` tag. Relative URLs resolve against the page URL (`/` locally, `/sign
 |-------|--------|
 | `name` / `short_name` | FloRo Sign Controller / FloRo Sign |
 | `start_url` / `scope` | `./` |
-| `id` | `./` (resolves to the canonical scope in production and localhost in development) |
+| `id` | `https://rawshn.com/sign-controller/` (canonical production identity) |
 | `display` | `standalone` |
 | `display_override` | `["standalone"]` |
 | `launch_handler.client_mode` | `["navigate-existing", "auto"]` (array, not a string) |
 | `icons` | `./icons/icon-192.png` (`any`), `./icons/icon-512.png` (`any` + `maskable`) |
 | `theme_color` / `background_color` | `#020D0A` |
-| `related_applications` | Self-reference used to detect an existing Android installation |
-
 `prefer_related_applications` stays `false` so Chrome does not skip the install UI looking for a Play Store app.
 
 ## Service worker
@@ -62,12 +60,11 @@ Module: `js/pwa-install.js`. Early capture in `index.html` (before other scripts
 |-----------|--------|----------------|-------|
 | `beforeinstallprompt` fired | Show | Show | `event.prompt()` only |
 | Android, no native event | Show immediately (honest copy) | Hidden | Wait for native eligibility; never create a shortcut |
-| Android, PWA already installed | Show find-app copy | **Find app** | App-drawer instructions |
-| iOS, not standalone | Show (Share → A2HS copy) | **Install help** | Share → Add to Home Screen instructions |
-| Desktop, no event | Hidden | Hidden | Settings help sheet only |
+| iOS, not standalone | Show (Share → A2HS copy) | Hidden | Settings retains Share → Add to Home Screen help |
+| Desktop, no event | Hidden | Hidden | Settings install row hidden |
 | Already standalone | Hidden | Hidden | Settings install row hidden |
 
-Dismiss **Not now** writes `localStorage` `floro_install_dismissed_v7` with a 7-day TTL. On Android and desktop, Settings → **Install App** is visible only while a native prompt is held or an existing installation was detected. It never directs users into Chrome’s **Create shortcut** flow, which creates a browser bookmark instead of a standalone app. A self-reference in `related_applications` lets supporting Chrome versions distinguish “prompt unavailable” from “already installed.” Android launchers may install into the app drawer without pinning a Home screen icon, so the installed help names both **FloRo Sign** and the old **FloRo** short name.
+Dismiss **Not now** writes `localStorage` `floro_install_dismissed_v7` with a 7-day TTL. On Android and desktop, Settings → **Install App** is visible only while a native prompt is held. It never directs users into Chrome’s **Create shortcut** flow, which creates a browser bookmark instead of a standalone app. As in Health Hub, FloRo does not use `related_applications` or installed-app detection as part of installation.
 
 `preventDefault` on `beforeinstallprompt` is required to call `prompt()` later. The in-page **Install** button must call that event directly. If Chrome does not emit the event, FloRo must not offer an Android install action. **Create shortcut** is not an installation and must never be presented as a fallback.
 
diff --git a/sw.js b/sw.js
index db94448..303dc52 100644
--- a/sw.js
+++ b/sw.js
@@ -1,4 +1,4 @@
-const CACHE_NAME = 'floro-controller-v63';
+const CACHE_NAME = 'floro-controller-v64';
 const ASSETS = [
   './',
   './index.html',