fix(desktop): bundle core in packaged app

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: 1fc19188-72f7-45c9-9cb3-fc3aad38a17c

Author: SlowGreekMSFT

packages/desktop/electron.vite.config.ts

@@ -33,7 +33,9 @@ const require = __cjs_mod__.createRequire(import.meta.url);
 `,
         },
       },
-      externalizeDeps: { include: [nodePtyPkg] },
+      // Core publishes TypeScript source exports for Bun consumers. Bundle it so
+      // packaged Electron never asks Node to strip types inside node_modules.
+      externalizeDeps: { exclude: ["@opencode-ai/core"], include: [nodePtyPkg] },
     },
     plugins: [
       {

packages/desktop/src/renderer/html.test.ts

@@ -60,3 +60,10 @@ describe("electron vite publicDir", () => {
     expect(existsSync(join(resolved, "oc-theme-preload.js"))).toBe(true)
   })
 })
+
+describe("electron vite main bundle", () => {
+  test("bundles workspace core instead of loading TypeScript from node_modules", async () => {
+    const config = await Bun.file(join(root, "electron.vite.config.ts")).text()
+    expect(config).toMatch(/externalizeDeps:\s*\{[^}]*exclude:\s*\[\s*["']@opencode-ai\/core["']/s)
+  })
+})