fix(config): accept '_' digit separator in addr port

parsePort used Integer.parseInt, which rejects underscores, while every
other numeric config key parses via Numbers.parseInt/parseLong, which
treat '_' as a digit-group separator. The merge-base ingress parser
(Sender.addAddressEntry) also used Numbers.parseInt, so addr=host:9_000
parsed before this refactor and regressed to rejection.

Switch parsePort to Numbers.parseInt (catching NumericException) to
restore prior behaviour and align addr with the other numeric keys.

Author: bluestreak01

core/src/main/java/io/questdb/client/impl/ConfigView.java

@@ -234,8 +234,8 @@ private static boolean outOfRange(ConfigSchema.KeySpec spec, long v) {
     private static int parsePort(String portStr, String entry) {
         int port;
         try {
-            port = Integer.parseInt(portStr.trim());
-        } catch (NumberFormatException e) {
+            port = Numbers.parseInt(portStr.trim());
+        } catch (NumericException e) {
             throw new IllegalArgumentException("invalid port in addr: " + entry);
         }
         if (port < 1 || port > 65535) {

core/src/test/java/io/questdb/client/test/impl/ConfigViewTest.java

@@ -61,6 +61,14 @@ public void testAddrEmptyEntryRejected() {
         assertParseError("ws::addr=a,,b;", "empty addr entry");
     }
 
+    @Test
+    public void testAddrPortAcceptsUnderscoreSeparator() {
+        // Numeric config keys parse with Numbers.parseInt, which treats '_' as
+        // a digit-group separator; the addr port must stay consistent.
+        Assert.assertEquals(list("h:9000"), hostPorts("ws::addr=h:9_000;"));
+        Assert.assertEquals(list("::1:9001"), hostPorts("ws::addr=[::1]:9_001;"));
+    }
+
     @Test
     public void testAddrPortOutOfRangeRejected() {
         assertParseError("ws::addr=h:0;", "port out of range in addr");