v2 message format and upgrade to ai sdk v5 (#743)

Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: Liang-Shih Lin <liangshihlin@proton.me>
Co-authored-by: Dominik Engelhardt <dominikengelhardt@ymail.com>
Co-authored-by: Jay V <air@live.ca>
Co-authored-by: adamdottv <2363879+adamdottv@users.noreply.github.com>

packages/opencode/src/cli/cmd/generate.ts

@@ -10,9 +10,6 @@ export const GenerateCommand = {
     const dir = "gen"
     await fs.rmdir(dir, { recursive: true }).catch(() => {})
     await fs.mkdir(dir, { recursive: true })
-    await Bun.write(
-      path.join(dir, "openapi.json"),
-      JSON.stringify(specs, null, 2),
-    )
+    await Bun.write(path.join(dir, "openapi.json"), JSON.stringify(specs, null, 2))
   },
 } satisfies CommandModule