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/page.ts

@@ -887,6 +887,50 @@ function bridgeScript(options: PageOptions): string {
   onReady(renderDecisionsRail);
   onReady(describeElements);
   onReady(renderModeSwitch);
+
+  // Archify Sync: one labelled button, top right, on every page of an Archify
+  // file (diagram, model, graph, registry, decision). It opens the Sync menu.
+  function renderSyncButton() {
+    if (!(config.source || config.model || config.registry || config.decision || config.graph)) return;
+    if (document.getElementById('archify-sync-button')) return;
+    var style = document.createElement('style');
+    style.textContent = SYNC_BUTTON_STYLE;
+    document.head.appendChild(style);
+    var button = document.createElement('button');
+    button.id = 'archify-sync-button';
+    button.type = 'button';
+    button.title = 'Archify Sync: sign in, share this model with others, or join one';
+    button.addEventListener('click', function (event) { event.stopPropagation(); post({ type: 'syncMenu' }); });
+    document.body.appendChild(button);
+    showSyncState(false);
+    post({ type: 'syncReady' });
+  }
+  // Not shared: a cloud, "Sync". Shared (the model has an .archify-sync file): broadcast waves, "Shared".
+  var SYNC_ICONS = {
+    off: '<svg viewBox="0 0 16 16" width="15" height="15" aria-hidden="true"><path fill="currentColor" d="M12.5 13H4.25a3.25 3.25 0 0 1-.6-6.44 4.5 4.5 0 0 1 8.7-.81A3.6 3.6 0 0 1 12.5 13Zm-8.25-1h8.25a2.6 2.6 0 0 0 0-5.2h-.5l-.12-.39a3.5 3.5 0 0 0-6.82.66l-.04.4-.4.05A2.25 2.25 0 0 0 4.25 12Z"/></svg>',
+    on: '<svg viewBox="0 0 16 16" width="15" height="15" aria-hidden="true"><circle cx="8" cy="8" r="1.75" fill="currentColor"/><path fill="none" stroke="currentColor" stroke-width="1.3" stroke-linecap="round" d="M5.2 5.2a4 4 0 0 0 0 5.6M10.8 5.2a4 4 0 0 1 0 5.6M3.1 3.1a7 7 0 0 0 0 9.8M12.9 3.1a7 7 0 0 1 0 9.8"/></svg>',
+  };
+  function showSyncState(shared) {
+    var button = document.getElementById('archify-sync-button');
+    if (!button) return;
+    button.classList.toggle('is-shared', !!shared);
+    button.innerHTML = (shared ? SYNC_ICONS.on : SYNC_ICONS.off) + '<span>' + (shared ? 'Shared' : 'Sync') + '</span>';
+    button.title = shared
+      ? 'This model is shared with Archify Sync: invite people, publish a version, see versions'
+      : 'Archify Sync: sign in, share this model with others, or join one';
+  }
+  window.addEventListener('message', function (event) {
+    var message = event.data || {};
+    if (message.type === 'syncState') showSyncState(message.shared);
+  });
+  var SYNC_BUTTON_STYLE = '#archify-sync-button { position: fixed; top: 12px; right: 18px; z-index: 1001; display: inline-flex; align-items: center; gap: 6px;'
+    + ' padding: 6px 12px; border-radius: 8px; cursor: pointer; font: 600 13px/1 var(--vscode-font-family, system-ui, sans-serif);'
+    + ' color: var(--vscode-button-foreground, #fff); background: var(--vscode-button-background, #0e639c); border: 1px solid var(--vscode-button-border, transparent); }'
+    + ' #archify-sync-button:hover { background: var(--vscode-button-hoverBackground, #1177bb); }'
+    + ' #archify-sync-button.is-shared { color: #fff; background: #1f8f5f; }'
+    + ' #archify-sync-button.is-shared:hover { background: #23a36c; }'
+    + ' #archify-sync-button:focus-visible { outline: 2px solid var(--vscode-focusBorder, #007fd4); outline-offset: 2px; }';
+  onReady(renderSyncButton);
   if (config.source) {
     // The host answers with the problem count for the Source badge.
     post({ type: 'sourceReady' });