Stop the socket timeout from killing the remote mid-session

Issue #1's fix gave accepted sockets a read deadline so idle connections
could no longer pin threads — but NanoHTTPD's 5 s default also applies to
the long-lived WebSocket, and pings only ran every 8 s. The remote was
therefore dropped roughly five seconds into every session, right after a
command or two, with no close frame.

The deadline stays (that was the point) but is now 40 s, comfortably above
the ping interval, so pongs keep an active session alive while a truly idle
socket still gets reaped.

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

app/build.gradle.kts

@@ -12,8 +12,8 @@ android {
         applicationId = "dev.castarr.tv"
         minSdk = 26
         targetSdk = 35
-        versionCode = 34
-        versionName = "0.11.1"
+        versionCode = 35
+        versionName = "0.11.2"
     }
 
     // Release signing from environment (see ~/.keys/castarr-release.env on the

app/src/main/java/dev/castarr/tv/server/ControlServer.kt

@@ -97,7 +97,12 @@ class ControlServer(
     fun startServer() {
         // A busy port must not take the whole app down — the remote is
         // optional, everything else keeps working.
-        running = runCatching { start(NanoHTTPD.SOCKET_READ_TIMEOUT, true) }
+        // NanoHTTPD's 5 s default also applies to the long-lived WebSocket:
+        // with pings only every 8 s the socket timed out mid-session and the
+        // remote was thrown out after a few seconds. The timeout still has to
+        // exist (idle connections must not pin threads), it just has to be
+        // comfortably longer than the ping interval.
+        running = runCatching { start(SOCKET_TIMEOUT_MS, true) }
             .onFailure { Log.w(TAG, "control server unavailable: ${it.javaClass.simpleName}") }
             .isSuccess
         if (!running) return
@@ -354,6 +359,7 @@ class ControlServer(
     private companion object {
         const val TAG = "ControlServer"
         const val PING_INTERVAL_MS = 8_000L
+        const val SOCKET_TIMEOUT_MS = 40_000
         const val ATTEMPT_WINDOW_MS = 60_000L
         const val ATTEMPT_MAX = 5
         const val MAX_TRACKED_ADDRESSES = 64