test(log): avoid global logger module mocking

Replace the effect-log tests' global util/log module mock with local spies on Log.create so the logger compatibility tests no longer leak into unrelated unit suites. Keep the coverage for routing, annotations, spans, and cause formatting while allowing the full package test workflow to run cleanly.

packages/opencode/test/util/effect-log.test.ts

@@ -1,21 +1,25 @@
-import { beforeEach, expect, mock, test } from "bun:test"
+import { afterEach, expect, mock, spyOn, test } from "bun:test"
 import { Cause, Effect } from "effect"
 import { CurrentLogAnnotations, CurrentLogSpans } from "effect/References"
 
+import * as EffectLog from "../../src/util/effect-log"
+import { Log } from "../../src/util/log"
+
 const debug = mock(() => {})
 const info = mock(() => {})
 const warn = mock(() => {})
 const error = mock(() => {})
-const create = mock(() => ({
+
+const logger = {
   debug,
   info,
   warn,
   error,
   tag() {
-    return this
+    return logger
   },
   clone() {
-    return this
+    return logger
   },
   time() {
     return {
@@ -23,18 +27,9 @@ const create = mock(() => ({
       [Symbol.dispose]() {},
     }
   },
-}))
+}
 
-mock.module("../../src/util/log", () => ({
-  Log: {
-    create,
-  },
-}))
-
-const EffectLog = await import("../../src/util/effect-log")
-
-beforeEach(() => {
-  create.mockClear()
+afterEach(() => {
   debug.mockClear()
   info.mockClear()
   warn.mockClear()
@@ -42,6 +37,8 @@ beforeEach(() => {
 })
 
 test("EffectLog.layer routes info logs through util/log", async () => {
+  using create = spyOn(Log, "create").mockReturnValue(logger)
+
   await Effect.runPromise(Effect.logInfo("hello").pipe(Effect.provide(EffectLog.layer({ service: "effect-test" }))))
 
   expect(create).toHaveBeenCalledWith({ service: "effect-test" })
@@ -49,6 +46,8 @@ test("EffectLog.layer routes info logs through util/log", async () => {
 })
 
 test("EffectLog.layer forwards annotations and spans to util/log", async () => {
+  using create = spyOn(Log, "create").mockReturnValue(logger)
+
   await Effect.runPromise(
     Effect.logInfo("hello").pipe(
       Effect.annotateLogs({ requestId: "req-123" }),
@@ -57,6 +56,7 @@ test("EffectLog.layer forwards annotations and spans to util/log", async () => {
     ),
   )
 
+  expect(create).toHaveBeenCalledWith({ service: "effect-test-meta" })
   expect(info).toHaveBeenCalledWith(
     "hello",
     expect.objectContaining({
@@ -71,9 +71,10 @@ test("EffectLog.layer forwards annotations and spans to util/log", async () => {
 })
 
 test("EffectLog.make formats structured messages and causes for legacy logger", () => {
-  const logger = EffectLog.make({ service: "effect-test-struct" })
+  using create = spyOn(Log, "create").mockReturnValue(logger)
+  const effect = EffectLog.make({ service: "effect-test-struct" })
 
-  logger.log({
+  effect.log({
     message: { hello: "world" },
     logLevel: "Warn",
     cause: Cause.fail(new Error("boom")),
@@ -88,6 +89,7 @@ test("EffectLog.make formats structured messages and causes for legacy logger",
     date: new Date(),
   } as never)
 
+  expect(create).toHaveBeenCalledWith({ service: "effect-test-struct" })
   expect(warn).toHaveBeenCalledWith(
     '{"hello":"world"}',
     expect.objectContaining({