refactor(core): replace legacy logger with Effect logging (#31310)

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

@@ -5,7 +5,6 @@ import { EventV2 } from "@opencode-ai/core/event"
 import { SessionProjector } from "@opencode-ai/core/session/projector"
 import { Deferred, Effect, Exit, Layer } from "effect"
 import { Session as SessionNs } from "@/session/session"
-import * as Log from "@opencode-ai/core/util/log"
 import { MessageV2 } from "../../src/session/message-v2"
 import { MessageID, PartID, type SessionID } from "../../src/session/schema"
 import { CrossSpawnSpawner } from "@opencode-ai/core/cross-spawn-spawner"
@@ -17,8 +16,6 @@ import { BackgroundJob } from "@/background/job"
 import { EventV2Bridge } from "@/event-v2-bridge"
 import { GlobalBus } from "@/bus/global"
 
-void Log.init({ print: false })
-
 const it = testEffect(
   Layer.mergeAll(
     SessionNs.layer.pipe(