refactor(core): move database schema ownership (#29068)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>

packages/opencode/test/project/worktree.test.ts

@@ -5,8 +5,6 @@ import { CrossSpawnSpawner } from "@opencode-ai/core/cross-spawn-spawner"
 import { Cause, Deferred, Effect, Exit, Fiber, Layer } from "effect"
 import { GlobalBus, type GlobalEvent } from "../../src/bus/global"
 import { Git } from "../../src/git"
-import { InstanceRef } from "../../src/effect/instance-ref"
-import { InstanceRuntime } from "../../src/project/instance-runtime"
 import { Worktree } from "../../src/worktree"
 import { disposeAllInstances, provideInstance, TestInstance } from "../fixture/fixture"
 import { testEffect } from "../lib/effect"
@@ -41,11 +39,6 @@ const waitReady = Effect.fn("WorktreeTest.waitReady")(function* () {
 const removeCreatedWorktree = (directory: string) =>
   Effect.gen(function* () {
     const svc = yield* Worktree.Service
-    const ctx = yield* Effect.gen(function* () {
-      return yield* InstanceRef
-    }).pipe(provideInstance(directory))
-    if (!ctx) return yield* Effect.die(new Error("missing test instance"))
-    yield* Effect.promise(() => InstanceRuntime.disposeInstance(ctx))
     const ok = yield* svc.remove({ directory })
     if (!ok) return yield* Effect.fail(new Error(`failed to remove worktree ${directory}`))
   })