chore(release): v2.4.21 - kill PTR on immersive Odin

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "app-ts",
-  "version": "2.4.19",
+  "version": "2.4.21",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "app-ts",
-      "version": "2.4.19",
+      "version": "2.4.21",
       "license": "ISC",
       "dependencies": {
         "@anthropic-ai/sdk": "^0.102.0",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "app-ts",
-  "version": "2.4.19",
+  "version": "2.4.21",
   "description": "",
   "main": "dist/server.js",
   "scripts": {

src/admin/components/odin/OdinChat.tsx

@@ -437,8 +437,13 @@ export default function OdinChat() {
         // page never scrolls and the chat's message list scrolls internally.
         // Desktop: svh === vh.
         // Mobile is immersive (AppShell hides its header and main padding on
-        // /odin): the chat owns the whole viewport, full-bleed.
+        // /odin): the chat owns the whole viewport, full-bleed. --app-height
-        height: { xs: "100svh", md: "calc(100svh - 100px)" },
+        // is AppShell's live window.innerHeight measurement — standalone-PWA
+        // viewports misreport svh/dvh (MIUI), only the measured value fits.
+        height: {
+          xs: "var(--app-height, 100svh)",
+          md: "calc(100svh - 100px)",
+        },
         display: "flex",
         // Longhand on purpose: a responsive `border` shorthand lands in a
         // media query AFTER borderColor and resets the color to black.

src/admin/ui/AppShell.tsx

@@ -28,6 +28,36 @@ export default function AppShell() {
   // button. Desktop keeps the normal shell.
   const immersiveOnMobile = location.pathname === "/odin";
 
+  // Installed-PWA (standalone) viewports lie to CSS units: on MIUI/Android
+  // svh/dvh are computed against a viewport that includes system UI the real
+  // layout viewport doesn't have, leaving scroll room no unit can remove
+  // (and Chrome can serve a stale viewport after minimize/restore). Measure
+  // the truth — window.innerHeight — into --app-height and keep it fresh;
+  // immersive layouts size from it with an svh fallback.
+  useEffect(() => {
+    if (!immersiveOnMobile) return;
+    const root = document.documentElement;
+    const set = () =>
+      root.style.setProperty("--app-height", `${window.innerHeight}px`);
+    set();
+    window.addEventListener("resize", set);
+    window.visualViewport?.addEventListener("resize", set);
+    // Kill pull-to-refresh: a PTR reload lands mid-viewport-settle and
+    // re-races the measurement (Chromium settles without a resize event).
+    // The immersive page is fixed-viewport — the gesture has no use here.
+    const prevRootOverscroll = root.style.overscrollBehaviorY;
+    const prevBodyOverscroll = document.body.style.overscrollBehaviorY;
+    root.style.overscrollBehaviorY = "none";
+    document.body.style.overscrollBehaviorY = "none";
+    return () => {
+      window.removeEventListener("resize", set);
+      window.visualViewport?.removeEventListener("resize", set);
+      root.style.removeProperty("--app-height");
+      root.style.overscrollBehaviorY = prevRootOverscroll;
+      document.body.style.overscrollBehaviorY = prevBodyOverscroll;
+    };
+  }, [immersiveOnMobile]);
+
   const handleLogout = useCallback(() => {
     setLoggingOut(true);
     setMobileOpen(false);
@@ -92,7 +122,7 @@ export default function AppShell() {
             // makes body scroll impossible regardless of dvh interpretation.
             minHeight: immersiveOnMobile ? { xs: 0, md: "100dvh" } : "100dvh",
             ...(immersiveOnMobile && {
-              height: { xs: "100svh", md: "auto" },
+              height: { xs: "var(--app-height, 100svh)", md: "auto" },
               overflow: { xs: "hidden", md: "visible" },
             }),
           }}