fix(core): use file:// URLs for local dynamic import() on Windows+Node (#23639)

packages/opencode/src/tool/registry.ts

@@ -157,9 +157,9 @@ export const layer: Layer.Layer<
         if (matches.length) yield* config.waitForDependencies()
         for (const match of matches) {
           const namespace = path.basename(match, path.extname(match))
-          const mod = yield* Effect.promise(
-            () => import(process.platform === "win32" ? match : pathToFileURL(match).href),
-          )
+          // `match` is an absolute filesystem path from `Glob.scanSync(..., { absolute: true })`.
+          // Import it as `file://` so Node on Windows accepts the dynamic import.
+          const mod = yield* Effect.promise(() => import(pathToFileURL(match).href))
           for (const [id, def] of Object.entries<ToolDefinition>(mod)) {
             custom.push(fromPlugin(id === "default" ? namespace : `${namespace}_${id}`, def))
           }