V0.7.0 shell contract (#54)

src/js/sw/sdk/index.js

@@ -154,7 +154,7 @@ export async function boot() {
         sw.ui = Object.freeze({});
     }
 
-    // Topbar — standard navigation bar for surfaces
+    // Topbar — standard navigation bar for surfaces (legacy API)
     try {
         const topbarMod = await import('../shell/topbar.js');
         _shell.Topbar = topbarMod.Topbar;
@@ -162,7 +162,16 @@ export async function boot() {
         console.warn('[sw] Topbar import failed:', e.message);
     }
 
-    // Freeze shell now that Topbar is loaded
+    // Shell Topbar — kernel-injected two-slot topbar
+    try {
+        const shellTopbarMod = await import('../shell/shell-topbar.js');
+        _shell.topbar = shellTopbarMod.shellTopbarAPI;
+        _shell._ShellTopbar = shellTopbarMod.ShellTopbar;
+    } catch (e) {
+        console.warn('[sw] ShellTopbar import failed:', e.message);
+    }
+
+    // Freeze shell now that all shell modules are loaded
     sw.shell = Object.freeze(_shell);
 
     // UserMenu render helper — surfaces call sw.userMenu(container, opts)
@@ -174,7 +183,7 @@ export async function boot() {
     };
 
     // Marker for idempotency
-    sw._sdk = '0.6.5';
+    sw._sdk = '0.7.0';
 
     // 8. Expose globally
     window.sw = sw;
@@ -210,7 +219,18 @@ export async function boot() {
         console.warn('[sw] Imperative host mount failed:', e.message);
     }
 
-    // 11. Signal ready
+    // 11. Auto-mount shell topbar if #shell-topbar exists
+    try {
+        const shellMount = document.getElementById('shell-topbar');
+        if (shellMount && sw.shell._ShellTopbar && auth.isAuthenticated) {
+            const { render } = preact;
+            render(html`<${sw.shell._ShellTopbar} />`, shellMount);
+        }
+    } catch (e) {
+        console.warn('[sw] Shell topbar mount failed:', e.message);
+    }
+
+    // 12. Signal ready
     events.emit('sdk.ready', {}, { localOnly: true });
     document.dispatchEvent(new CustomEvent('sw:ready', { detail: { sw } }));
     console.log(`[sw] SDK v${sw._sdk} ready`);