core: improve plugin loading to handle builtin plugin failures gracefully

Author: thdxr

packages/opencode/src/plugin/index.ts

@@ -11,6 +11,8 @@ import { Flag } from "../flag/flag"
 export namespace Plugin {
   const log = Log.create({ service: "plugin" })
 
+  const BUILTIN = ["opencode-copilot-auth@0.0.9", "opencode-anthropic-auth@0.0.5"]
+
   const state = Instance.state(async () => {
     const client = createOpencodeClient({
       baseUrl: "http://localhost:4096",
@@ -29,16 +31,19 @@ export namespace Plugin {
     }
     const plugins = [...(config.plugin ?? [])]
     if (!Flag.OPENCODE_DISABLE_DEFAULT_PLUGINS) {
-      plugins.push("opencode-copilot-auth@0.0.9")
-      plugins.push("opencode-anthropic-auth@0.0.5")
+      plugins.push(...BUILTIN)
     }
     for (let plugin of plugins) {
       log.info("loading plugin", { path: plugin })
       if (!plugin.startsWith("file://")) {
         const lastAtIndex = plugin.lastIndexOf("@")
         const pkg = lastAtIndex > 0 ? plugin.substring(0, lastAtIndex) : plugin
         const version = lastAtIndex > 0 ? plugin.substring(lastAtIndex + 1) : "latest"
-        plugin = await BunProc.install(pkg, version)
+        plugin = await BunProc.install(pkg, version).catch((err) => {
+          if (BUILTIN.includes(pkg)) return ""
+          throw err
+        })
+        if (!plugin) continue
       }
       const mod = await import(plugin)
       for (const [_name, fn] of Object.entries<PluginInstance>(mod)) {