xP: improve the activity indicator

Also adjust the Makefile to reflect resource embedding.

xP/Makefile

@@ -6,7 +6,7 @@ tools = ../liberty/tools
 outputs = xP proto.go public/proto.js public/mithril.js
 all: $(outputs) public/ircfmt.woff2
 
-xP: xP.go proto.go
+xP: xP.go proto.go public/proto.js public/mithril.js public/xP.css public/xP.js
 	go build -o $@
 proto.go: $(tools)/lxdrgen.awk $(tools)/lxdrgen-go.awk ../xC.lxdr
 	$(AWK) -f $(tools)/lxdrgen.awk -f $(tools)/lxdrgen-go.awk \

xP/public/xP.css

@@ -66,6 +66,9 @@ body {
 	bottom: -1px;
 	background: #ccc;
 }
+.invisible {
+	visibility: hidden;
+}
 
 .toolbar {
 	display: flex;

xP/public/xP.js

@@ -1,4 +1,4 @@
-// Copyright (c) 2022 - 2025, Přemysl Eric Janouch <p@janouch.name>
+// Copyright (c) 2022 - 2026, Přemysl Eric Janouch <p@janouch.name>
 // SPDX-License-Identifier: 0BSD
 import * as Relay from './proto.js'
 
@@ -1127,7 +1127,9 @@ let Main = {
 			overlay,
 			m('.title', {}, [
 				m('span', [
-					rpc.busy ? '⋯ ' : undefined,
+					// Midline Horizontal Ellipsis, No-Break Space
+					m('span', {class: rpc.busy ? undefined : 'invisible'},
+						`\u22EF\u00A0`),
 					m('b', {}, `xP`),
 				]),
 				m(Topic),