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

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

packages/opencode/test/tool/grep.test.ts

@@ -4,7 +4,7 @@ import os from "os"
 import path from "path"
 import { Effect, Layer } from "effect"
 import { GrepTool } from "../../src/tool/grep"
-import { provideInstance, TestInstance, tmpdirScoped } from "../fixture/fixture"
+import { provideInstance, testInstanceStoreLayer, TestInstance, tmpdirScoped } from "../fixture/fixture"
 import { SessionID, MessageID } from "../../src/session/schema"
 import { CrossSpawnSpawner } from "@opencode-ai/core/cross-spawn-spawner"
 import { Global } from "@opencode-ai/core/global"
@@ -42,6 +42,7 @@ const toolLayer = (flags: Partial<RuntimeFlags.Info> = {}) =>
 
 const it = testEffect(toolLayer())
 const scout = testEffect(toolLayer({ experimentalScout: true }))
+const rooted = testEffect(Layer.mergeAll(toolLayer(), testInstanceStoreLayer))
 
 const ctx = {
   sessionID: SessionID.make("ses_test"),
@@ -90,7 +91,7 @@ const git = Effect.fn("GrepToolTest.git")(function* (cwd: string, args: string[]
 })
 
 describe("tool.grep", () => {
-  it.live("basic search", () =>
+  rooted.live("basic search", () =>
     Effect.gen(function* () {
       const info = yield* GrepTool
       const grep = yield* info.init()