test(core): simplify cross-spawn layer wiring

packages/core/test/effect/cross-spawn-spawner.test.ts

@@ -6,9 +6,10 @@ import { Effect, Exit, Stream } from "effect"
 import type * as PlatformError from "effect/PlatformError"
 import { ChildProcess, ChildProcessSpawner } from "effect/unstable/process"
 import { CrossSpawnSpawner } from "@opencode-ai/core/cross-spawn-spawner"
+import { LayerNode } from "@opencode-ai/core/effect/layer-node"
 import { testEffect } from "../lib/effect"
 
-const live = CrossSpawnSpawner.defaultLayer
+const live = LayerNode.buildLayer(CrossSpawnSpawner.node)
 const fx = testEffect(live)
 
 function js(code: string, opts?: ChildProcess.CommandOptions) {

packages/opencode/src/session/message-v2.ts

@@ -22,6 +22,7 @@ import {
 import { NamedError } from "@opencode-ai/core/util/error"
 import { APICallError, convertToModelMessages, LoadAPIKeyError, type ModelMessage, type UIMessage } from "ai"
 import { Database } from "@opencode-ai/core/database/database"
+import { LayerNode } from "@opencode-ai/core/effect/layer-node"
 import { NotFoundError } from "@/storage/storage"
 import { and } from "drizzle-orm"
 import { desc } from "drizzle-orm"
@@ -38,6 +39,8 @@ import type { SystemError } from "bun"
 import type { Provider } from "@/provider/provider"
 import { Effect, Schema } from "effect"
 
+export const node = LayerNode.group([Database.node])
+
 /** Error shape thrown by Bun's fetch() when gzip/br decompression fails mid-stream */
 interface FetchDecompressionError extends Error {
   code: "ZlibError"

packages/opencode/test/git/git.test.ts

@@ -3,12 +3,13 @@ import { describe, expect } from "bun:test"
 import fs from "fs/promises"
 import path from "path"
 import { Effect } from "effect"
+import { LayerNode } from "@opencode-ai/core/effect/layer-node"
 import { Git } from "../../src/git"
 import { tmpdir } from "../fixture/fixture"
 import { testEffect } from "../lib/effect"
 
 const weird = process.platform === "win32" ? "space file.txt" : "tab\tfile.txt"
-const it = testEffect(Git.defaultLayer)
+const it = testEffect(LayerNode.buildLayer(Git.node))
 
 const scopedTmpdir = (options?: Parameters<typeof tmpdir>[0]) =>
   Effect.acquireRelease(

packages/opencode/test/session/messages-pagination.test.ts

@@ -1,7 +1,8 @@
 import { describe, expect, test } from "bun:test"
 import { SessionV1 } from "@opencode-ai/core/v1/session"
-import { Database } from "@opencode-ai/core/database/database"
-import { Effect, Layer, Option } from "effect"
+import { LayerNode } from "@opencode-ai/core/effect/layer-node"
+import { SessionProjector } from "@opencode-ai/core/session/projector"
+import { Effect, Option } from "effect"
 import { Session as SessionNs } from "@/session/session"
 import { MessageV2 } from "../../src/session/message-v2"
 import { MessageID, PartID, type SessionID } from "../../src/session/schema"
@@ -11,7 +12,7 @@ import { testEffect } from "../lib/effect"
 import { ProviderV2 } from "@opencode-ai/core/provider"
 import { ModelV2 } from "@opencode-ai/core/model"
 
-const it = testEffect(Layer.mergeAll(SessionNs.defaultLayer, Database.defaultLayer))
+const it = testEffect(LayerNode.buildLayer(LayerNode.group([SessionNs.node, MessageV2.node, SessionProjector.node])))
 
 const withSession = <A, E, R>(
   fn: (input: { session: SessionNs.Interface; sessionID: SessionID }) => Effect.Effect<A, E, R>,

packages/opencode/test/session/retry.test.ts

@@ -3,7 +3,8 @@ import { SessionV1 } from "@opencode-ai/core/v1/session"
 import type { NamedError } from "@opencode-ai/core/util/error"
 import { APICallError } from "ai"
 import { setTimeout as sleep } from "node:timers/promises"
-import { Effect, Layer, Schedule, Schema } from "effect"
+import { Effect, Schedule, Schema } from "effect"
+import { LayerNode } from "@opencode-ai/core/effect/layer-node"
 import { CrossSpawnSpawner } from "@opencode-ai/core/cross-spawn-spawner"
 import { SessionRetry } from "../../src/session/retry"
 import { MessageV2 } from "../../src/session/message-v2"
@@ -15,7 +16,7 @@ import { ProviderV2 } from "@opencode-ai/core/provider"
 
 const providerID = ProviderV2.ID.make("test")
 const retryProvider = "test"
-const it = testEffect(Layer.mergeAll(SessionStatus.defaultLayer, CrossSpawnSpawner.defaultLayer))
+const it = testEffect(LayerNode.buildLayer(LayerNode.group([SessionStatus.node, CrossSpawnSpawner.node])))
 
 function apiError(headers?: Record<string, string>): SessionV1.APIError {
   return Schema.decodeUnknownSync(SessionV1.APIError.Schema)(