fix(plugins): restore workbench refresh and bootstrap

apps/desktop/src/lib/plugins/pluginHostBridge.spec.ts

@@ -384,12 +384,19 @@ describe("plugin SDK source", () => {
     dbxPlugin?: { invoke: (method: string, params?: unknown, options?: { timeoutMs?: number }) => Promise<unknown> };
   }
 
-  function loadSdk(posted: unknown[]): SdkWindow {
+  function loadSdk(posted: unknown[], initialTheme?: { appearance: "dark" | "light"; tokens: Record<string, string> }): SdkWindow {
     const sandbox = {} as SdkWindow;
+    const document = {
+      documentElement: {
+        dataset: {} as Record<string, string>,
+        style: { colorScheme: "", setProperty: vi.fn() },
+      },
+      dispatchEvent: vi.fn(),
+    } as unknown as Document;
     // The SDK IIFE only touches window and the bare-global addEventListener at
     // boot; parent.postMessage is captured for later request() calls, so a
     // stub window/parent is enough here.
-    new Function("window", "parent", "addEventListener", pluginSdkSource())(sandbox, { postMessage: (message: unknown) => posted.push(message) }, () => {});
+    new Function("window", "parent", "addEventListener", "document", pluginSdkSource(initialTheme))(sandbox, { postMessage: (message: unknown) => posted.push(message) }, () => {}, document);
     return sandbox;
   }
 
@@ -421,6 +428,14 @@ describe("plugin SDK source", () => {
     expect(JSON.stringify(message.params.params.sessionIds)).toBe(JSON.stringify(["session-a", "session-b"]));
   });
 
+  it("boots successfully when the host provides the initial theme", () => {
+    const posted: unknown[] = [];
+    const { dbxPlugin } = loadSdk(posted, { appearance: "dark", tokens: { "--color-background": "#131416" } });
+
+    expect(dbxPlugin).toBeDefined();
+    expect(posted[0]).toMatchObject({ source: "dbx-plugin", type: "ready" });
+  });
+
   it("keeps cloneable values intact and plain scalars by reference", () => {
     const posted: unknown[] = [];
     const { dbxPlugin } = loadSdk(posted);

apps/desktop/src/lib/plugins/pluginHostBridge.ts

@@ -349,7 +349,6 @@ export function pluginSdkSource(initialTheme?: PluginBridgeTheme): string {
     const applyTheme = (value) => {
       if (!value || typeof value !== 'object') return;
       theme = value;
-      const theme = value;
       const root = document.documentElement;
       root.dataset.dbxTheme = theme.appearance === "dark" ? "dark" : "light";
       root.style.colorScheme = theme.appearance === "dark" ? "dark" : "light";