fix(client): debug console review fixes — D-088 pause, settings state, response guard

- Add D-088 Overlay pause/unpause signals to DebugConsole, wire in main.gd
  so sim does not advance while typing debug commands
- Settings dialog reads live DebugConsole.is_enabled() instead of ConfigFile
  directly, preventing checkbox/state divergence
- append_response respects disabled state — no auto-open when user disabled
  console via settings
- tp command warns on invalid z value instead of silently defaulting to 0

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

client/scripts/main.gd

@@ -129,6 +129,11 @@ func _ready() -> void:
 	if settings_dialog and debug_console:
 		settings_dialog.debug_console_toggled.connect(debug_console.set_enabled)
 
+	# #581 D-088: Wire debug console pause/unpause — sim must not advance during debug input
+	if debug_console:
+		debug_console.pause_requested.connect(_on_dialogue_pause_requested)
+		debug_console.unpause_requested.connect(_on_dialogue_unpause_requested)
+
 
 func _process(delta: float) -> void:
 	# Main game loop: poll snapshot, apply state, flush input