Honor Num Lock during Remote keyboard capture

Forward numeric keypad identities with Num Lock enabled and preserve held-key pairing across lock changes. Suppress local lock feedback during remote capture so it cannot interrupt incoming speech. Add debug speech and capture-end diagnostics, expand private keypad checks, and repair the suspension probe source list.

Validated affected Go packages, focused remote speech race checks, the private X11 Remote input harness, and a reader build. Live physical keyboard, audible PowerShell speech, Braille, and disconnect-cause verification remain pending; the active reader session was left running.

internal/platform/xorg/commands_native.c

@@ -634,6 +634,17 @@ int next_command_key(CommandDevice *device, CommandKey *key) {
     }
     key->pressed=(event.type==KeyPress); key->code=event.xkey.keycode;
     key->symbol=XLookupKeysym(&event.xkey,0);
+    key->remoteSymbol=key->symbol;
+    // Remote keypad identities must follow Num Lock. Keep ordinary command
+    // matching at level zero, and forward Shift separately like other keys.
+    // Retain this identity in the capture owner until the physical release.
+    if (IsKeypadKey(key->symbol)) {
+        unsigned int consumed;
+        KeySym translated;
+        if (XkbLookupKeySym(device->display,event.xkey.keycode,
+                event.xkey.state & device->numlockMask,&consumed,&translated))
+            key->remoteSymbol=translated;
+    }
     key->modifiers=event.xkey.state & ~device->ignoredModifierMask;
     key->text[0]=0; key->textSymbol=0;
     if (device->internalUI && event.type==KeyPress) {