[#478] Base App migration — SDK restricted to Farcaster only

src/app/layout.tsx

@@ -67,6 +67,9 @@ export const metadata: Metadata = {
     title: appName,
   },
   themeColor,
+  other: {
+    "base:app_id": "69c257e93c2c56b9bbd2f62a",
+  },
 };
 
 export default function RootLayout({

src/components/FarcasterMiniApp.tsx

@@ -1,26 +1,24 @@
 "use client";
 
 import { useEffect } from "react";
+import { usePlatformDetection } from "../hooks/usePlatformDetection";
 
 /**
- * Detects whether the app is running inside a Farcaster client via sdk.context
- * and calls `sdk.actions.ready()` to dismiss the splash screen.
+ * Calls `sdk.actions.ready()` to dismiss the splash screen — only in Farcaster clients.
+ * After Base App migration (April 2026), Base App operates as standard web app.
  *
  * Renders nothing — mount once near the root of the component tree.
  */
 export function FarcasterMiniApp() {
+  const { platform, isLoading } = usePlatformDetection();
+
   useEffect(() => {
-    if (typeof window === "undefined") return;
+    if (isLoading || platform !== "farcaster") return;
 
     let cancelled = false;
 
     import("@farcaster/miniapp-sdk").then(async ({ sdk }) => {
       if (cancelled) return;
-
-      // sdk.context is only available when running inside a Farcaster client
-      const context = await sdk.context;
-      if (!context || cancelled) return;
-
       sdk.actions.ready();
     }).catch(() => {
       // Not in a Farcaster context — silently ignore
@@ -29,7 +27,7 @@ export function FarcasterMiniApp() {
     return () => {
       cancelled = true;
     };
-  }, []);
+  }, [platform, isLoading]);
 
   return null;
 }

src/components/ShareToFarcaster.tsx

@@ -1,9 +1,10 @@
 "use client";
 
-import { useEffect, useState, useCallback } from "react";
+import { useCallback } from "react";
+import { usePlatformDetection } from "../hooks/usePlatformDetection";
 
 /**
- * "Share to Farcaster" button — only renders inside a Farcaster Mini App context.
+ * "Share to Farcaster" button — only renders when platform === 'farcaster'.
  * Calls sdk.actions.composeCast() with pre-filled text and story URL as embed.
  */
 export function ShareToFarcaster({
@@ -13,27 +14,7 @@ export function ShareToFarcaster({
   storylineId: number;
   title: string;
 }) {
-  const [visible, setVisible] = useState(false);
-
-  useEffect(() => {
-    if (typeof window === "undefined") return;
-
-    let cancelled = false;
-
-    import("@farcaster/miniapp-sdk")
-      .then(async ({ sdk }) => {
-        if (cancelled) return;
-        const ctx = await sdk.context;
-        if (ctx && !cancelled) setVisible(true);
-      })
-      .catch(() => {
-        // Not in a Farcaster context
-      });
-
-    return () => {
-      cancelled = true;
-    };
-  }, []);
+  const { platform, isLoading } = usePlatformDetection();
 
   const handleShare = useCallback(async () => {
     const { sdk } = await import("@farcaster/miniapp-sdk");
@@ -48,7 +29,7 @@ export function ShareToFarcaster({
     });
   }, [storylineId, title]);
 
-  if (!visible) return null;
+  if (isLoading || platform !== "farcaster") return null;
 
   return (
     <button

src/components/token/SwapInterface.tsx

@@ -47,9 +47,9 @@ export function SwapInterface() {
     );
   }
 
-  // Farcaster / Base App — native swap
-  if (platform === "farcaster" || platform === "base") {
-    const platformName = platform === "base" ? "Base App" : "Farcaster";
+  // Farcaster only — native swap (Base App migrated to standard web app Apr 2026)
+  if (platform === "farcaster") {
+    const platformName = "Farcaster";
 
     return (
       <div className="border-border rounded border p-5 space-y-4">