nip55: source the batch cap from keep-mobile via nip55MaxBatchSize()

app/src/main/kotlin/io/privkey/keep/nip55/Nip55Activity.kt

@@ -27,6 +27,7 @@ import io.privkey.keep.uniffi.Nip55RequestType
 import io.privkey.keep.uniffi.Nip55RelayAuthGate
 import io.privkey.keep.uniffi.Nip55Response
 import io.privkey.keep.uniffi.nip55ExtractRelayHost
+import io.privkey.keep.uniffi.nip55MaxBatchSize
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
@@ -60,7 +61,9 @@ class Nip55Activity : FragmentActivity() {
     // pending list, the displayed snapshot the decision binds to, and the commit lock,
     // and enforces the three TOCTOU guards so a late-racing request can never be folded
     // into the signed set (gh #372).
-    private val gate = BatchConsentGate<PendingNip55Request, DisplayedCaller>(MAX_BATCH_SIZE) { it.request.requestType }
+    private val gate by lazy {
+        BatchConsentGate<PendingNip55Request, DisplayedCaller>(MAX_BATCH_SIZE) { it.request.requestType }
+    }
 
     private class PendingNip55Request(
         val request: Nip55Request,
@@ -103,8 +106,13 @@ class Nip55Activity : FragmentActivity() {
         private const val MAX_CONTENT_LENGTH = 1024 * 1024
         private const val MAX_PUBKEY_LENGTH = 128
         private const val MAX_EXTRA_LENGTH = 2048
-        // Mirrors keep-mobile MAX_BATCH_SIZE; bounds accumulation against a spammy caller.
-        private const val MAX_BATCH_SIZE = 20
+        // keep-mobile owns the batch cap; read it rather than duplicate the value and
+        // risk drift across the RMP boundary. Bounds accumulation against a spammy caller.
+        // Computed (not a stored val) so the FFI call happens at the use site during
+        // request handling rather than at class-init: in the degraded state where
+        // initializeKeepMobile() failed, a NIP-55 intent then fails on the signing path
+        // as a handled error rather than an opaque ExceptionInInitializerError at load.
+        private val MAX_BATCH_SIZE: Int get() = nip55MaxBatchSize().toInt()
     }
 
     override fun onCreate(savedInstanceState: Bundle?) {

keep.version

@@ -1 +1 @@
-3a6aa55094d48465583ac653438c5f86460497c3
+750d8f5f44304b009ef1c45313999447020dbd9a