The Loyaly mark everywhere a person sees the product

Brand assets in brand/ (the 512px mark, sizes for each surface, a
multi-size .ico). Windows executables carry it as a compiled-in
resource (rsrc_windows_amd64.syso from go-winres) so Explorer, the
taskbar and the installer show it; installer/build.ps1 therefore uses a
plain go build rather than wails build, which would add a second copy
and fail the link. The tray icon is the mark with a state dot over its
corner - a plain coloured circle read as a generic status light among
other icons - rendered from the embedded PNG at 32px so it survives
150% scaling. The desktop app's login, setup and sidebar marks, the
head-office web app's mark and favicon, and the engine dashboard's
favicon are the same file.

Also found while packaging: no wheel so far shipped static/, so the
engine's own dashboard at :8010 on a Windows source install would have
failed with a missing file. package-data now includes it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KGcjxF1cNLcuwc3DAPcnfj

desktop/frontend/src/App.jsx

@@ -2,6 +2,7 @@ import { useCallback, useEffect, useState } from 'react'
 import { api, isDesktop, message } from './bridge.js'
 import { usePolled } from './hooks.js'
 import * as Icon from './ui/icons.jsx'
+import logo from './assets/loyaly-mark.png'
 import Login from './views/Login.jsx'
 import Setup from './views/Setup.jsx'
 import Live from './views/Live.jsx'
@@ -49,7 +50,7 @@ export default function App() {
     // error nobody will read.
     return (
       <div className="login"><div className="box">
-        <span className="mark"><Icon.Shield size={20} /></span>
+        <span className="mark"><img src={logo} alt="" /></span>
         <h1>Behavision</h1>
         <p className="lead">
           This is the Behavision window running outside the app, so it has no
@@ -80,7 +81,7 @@ export default function App() {
     <div className="shell">
       <aside className="side">
         <div className="brand">
-          <span className="mark"><Icon.Shield size={17} /></span>
+          <span className="mark"><img src={logo} alt="" /></span>
           <div className="id">
             <h1>Behavision</h1>
             <p>{session.site_name || session.user?.client_name || 'This shop'}</p>