Fix standalone mode detection for port 7777 (v0.52.6)

- Add port 7777 to list of known relay ports in config.js
- Prevents false-positive standalone mode detection

Files modified:
- app/web/src/config.js: Add 7777 to relay port list
- pkg/version/version: Bump to v0.52.6

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/web/src/config.js

@@ -26,7 +26,7 @@ export function initConfig() {
     // 4. Not running on a typical relay port (3334) - likely a static server
     const hasStoredRelay = !!localStorage.getItem("relayUrl");
     const isFileProtocol = window.location.protocol === 'file:';
-    const isNonRelayPort = !['3334', '443', '80', ''].includes(window.location.port);
+    const isNonRelayPort = !['3334', '7777', '443', '80', ''].includes(window.location.port);
 
     const standalone = BUILD_STANDALONE_MODE || hasStoredRelay || isFileProtocol || isNonRelayPort;
     isStandaloneMode.set(standalone);

pkg/version/version

@@ -1 +1 @@
-v0.52.5
+v0.52.6