0.10.4: a real Sync button on every Archify page

A labelled Sync button sits top right on every Archify page, also in Source, and opens the Sync menu. On a shared model it turns green and reads Shared. The title-bar icon and the pre-share status bar entry are gone, with their settings.

src/webview/source/index.ts

@@ -20,7 +20,7 @@ type HostMessage =
 
 const STYLE = `
 html.archify-source-on .container > :not(.header):not(#archify-source),
-html.archify-source-on body > :not(.toolbar):not(.container):not(.archify-model-head):not(.archify-model-switch-row):not(#archify-source):not(script):not(style):not(.archify-modal-backdrop),
+html.archify-source-on body > :not(.toolbar):not(.container):not(.archify-model-head):not(.archify-model-switch-row):not(#archify-source):not(#archify-sync-button):not(script):not(style):not(.archify-modal-backdrop),
 html.archify-source-on #btn-3d,
 html.archify-source-on .archify-vscode-notice { display: none !important; }
 html:not(.archify-source-on) #archify-source { display: none !important; }