debug: add some transaction debugging

damus/ContentView.swift

@@ -462,23 +462,27 @@ struct ContentView: View {
             damus_state.pool.disconnect()
         }
         .onReceive(NotificationCenter.default.publisher(for: UIApplication.willEnterForegroundNotification)) { obj in
-            print("📙 DAMUS ACTIVE NOTIFY")
-            try? damus_state.ndb.reopen()
+            print("txn: 📙 DAMUS ACTIVE NOTIFY")
+            if damus_state.ndb.reopen() {
+                print("txn: NOSTRDB REOPENED")
+            } else {
+                print("txn: NOSTRDB FAILED TO REOPEN closed:\(damus_state.ndb.closed)")
+            }
         }
         .onChange(of: scenePhase) { (phase: ScenePhase) in
             guard let damus_state else { return }
             switch phase {
             case .background:
-                print("📙 DAMUS BACKGROUNDED")
+                print("txn: 📙 DAMUS BACKGROUNDED")
                 Task { @MainActor in
                     damus_state.ndb.close()
                 }
                 break
             case .inactive:
-                print("📙 DAMUS INACTIVE")
+                print("txn: 📙 DAMUS INACTIVE")
                 break
             case .active:
-                print("📙 DAMUS ACTIVE")
+                print("txn: 📙 DAMUS ACTIVE")
                 damus_state.pool.ping()
             @unknown default:
                 break

damus/Models/DamusState.swift

@@ -94,6 +94,7 @@ struct DamusState: HeadlessDamusState {
     }
 
     func close() {
+        print("txn: damus close")
         pool.close()
         ndb.close()
     }

nostrdb/Ndb.swift

@@ -178,17 +178,20 @@ class Ndb {
     func close() {
         guard !self.closed else { return }
         self.closed = true
+        print("txn: CLOSING NOSTRDB")
         ndb_destroy(self.ndb.ndb)
+        print("txn: NOSTRDB CLOSED")
     }
 
-    func reopen() throws {
+    func reopen() -> Bool {
         guard self.closed,
               let db = Self.open(path: self.path, owns_db_file: self.owns_db) else {
-            throw DatabaseError.failed_open
+            return false
         }
 
         self.closed = false
         self.ndb = db
+        return true
     }
 
     func lookup_note_by_key_with_txn<Y>(_ key: NoteKey, txn: NdbTxn<Y>) -> NdbNote? {

nostrdb/NdbTxn.swift

@@ -65,7 +65,7 @@ class NdbTxn<T> {
 
         #if TXNDEBUG
         txn_count -= 1;
-        print("closing transaction \(txn_count)")
+        print("txn: closing transaction \(txn_count)")
         #endif
         ndb_end_query(&self.txn)
         Thread.current.threadDictionary.removeObject(forKey: "ndb_txn")