fix(tui): gate Zed context on terminal env (#28517)

packages/opencode/src/effect/config-service.ts

@@ -48,12 +48,14 @@ export const Service =
       }
 
       static get defaultLayer() {
+        const tag = this
         return Layer.effect(
-          this,
-          Config.all(fields).pipe(
+          tag,
+          Effect.gen(function* () {
+            const config = yield* Config.all(fields)
             // oxlint-disable-next-line typescript-eslint/no-unsafe-type-assertion -- Config.all preserves the field shape, but its conditional return type also supports iterable inputs.
-            Effect.map((config) => this.of(config as Shape<Fields>)),
-          ),
+            return tag.of(config as Shape<Fields>)
+          }),
         )
       }
     }