fix: remove the receive-only notice, and stop the CW record scrolling itself

Two things the operator asked for after running 4.6.1.

The receive-only notice named a state this app does not have. APRS-IS lets an unverified
station connect and then discards its packets, which is what "receive-only" means at the
protocol level - but this app only reports its own position. There is no receiving side to
it, and none intended, so telling the operator they are in receive-only mode described a
mode that does not exist here. Without a passcode the packet does not arrive, and the
unverified notice already says exactly that. The string is gone from all five locales,
along with the AprsReport.receiveOnly field, which had no remaining consumer.

AprsPasscode.classify stays: loginValue still uses it, and its tests hold the distinction
between a deliberate -1 and a typo, which is a separate defect worth keeping fixed.

The CW history pane no longer follows the decode. Its whole purpose is to be read back, and
a record that scrolls itself is worse than paper - as the operator put it, if it scrolls
away then why use a decoder instead of listening and writing it down, since paper does not
erase itself. The single line above it is where new characters appear; that still scrolls,
because that is its job. A down arrow in the toolbar jumps to the newest text when wanted.

Not fixed here: logged times in the log page look wrong and inconsistent. I proposed a
timezone explanation and wrote a probe, and the probe disproved it - on a real JVM both the
session header and the row times are stable and both resolve to local time. That reverted
attempt is not in this commit. The cause is still unknown.

core/data/src/main/java/com/rtbishop/look4sat/core/data/aprs/AprsReporter.kt

@@ -52,7 +52,7 @@ data class AprsReport(
      * test a setup without putting anything on the network - was reported as a wrong passcode
      * and sent the operator to fix something they had set on purpose.
      */
-    val receiveOnly: Boolean = false
+
 )
 
 /** Report scheduler (periodic + manual trigger); connection management lives in the foreground service */
@@ -127,13 +127,6 @@ class AprsReporter(
             }
             val packetLine = (beacon as AprsBeacon.Result.Line).text
 
-            // Receive-only is a deliberate choice and has to be told apart from a typo, because
-            // both log in with -1 and the server answers "unverified" to each. Classifying rather
-            // than asking canTransmit: that collapses ReceiveOnly and Mismatch into one boolean,
-            // so a mistyped passcode would be told it is in receive-only mode - the same
-            // mis-diagnosis as before, pointing the other way.
-            val wantsReceiveOnly =
-                AprsPasscode.classify(cfg.callsign, cfg.passcode) is AprsPasscode.Entry.ReceiveOnly
             val c = client ?: AprsIsClient(
                 host = cfg.server,
                 port = cfg.port,
@@ -166,14 +159,13 @@ class AprsReporter(
             // report, say that instead.
             val reported = when {
                 ok -> detail
-                refused && wantsReceiveOnly -> "receive-only, not forwarded"
                 refused -> "login not verified"
                 else -> detail
             }
             onReport(
                 AprsReport(
                     System.currentTimeMillis(), packetLine, ok, reported,
-                    verified = !refused, receiveOnly = wantsReceiveOnly
+                    verified = !refused
                 )
             )
             if (ok) onState(AprsState.Connected) else onState(AprsState.Error)