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

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

packages/opencode/test/tool/task.test.ts

@@ -1,8 +1,10 @@
 import { afterEach, describe, expect } from "bun:test"
+import { SessionLegacy } from "@opencode-ai/core/session/legacy"
+import { Database } from "@opencode-ai/core/database/database"
 import { Effect, Exit, Fiber, Layer } from "effect"
 import { Agent } from "../../src/agent/agent"
 import { BackgroundJob } from "@/background/job"
-import { Bus } from "@/bus"
+import { EventV2Bridge } from "@/event-v2-bridge"
 import { Config } from "@/config/config"
 import { CrossSpawnSpawner } from "@opencode-ai/core/cross-spawn-spawner"
 import { Session } from "@/session/session"
@@ -11,28 +13,29 @@ import type { SessionPrompt } from "../../src/session/prompt"
 import { MessageID, PartID, SessionID } from "../../src/session/schema"
 import { SessionRunState } from "@/session/run-state"
 import { SessionStatus } from "@/session/status"
-import { ModelID, ProviderID } from "../../src/provider/schema"
+
 import { TaskTool, type TaskPromptOps } from "../../src/tool/task"
 import { Truncate } from "@/tool/truncate"
 import { ToolRegistry } from "@/tool/registry"
 import { RuntimeFlags } from "@/effect/runtime-flags"
 import { disposeAllInstances } from "../fixture/fixture"
 import { testEffect } from "../lib/effect"
+import { ProviderV2 } from "@opencode-ai/core/provider"
 
 afterEach(async () => {
   await disposeAllInstances()
 })
 
 const ref = {
-  providerID: ProviderID.make("test"),
-  modelID: ModelID.make("test-model"),
+  providerID: ProviderV2.ID.make("test"),
+  modelID: ProviderV2.ModelID.make("test-model"),
 }
 
 const layer = (flags: Partial<RuntimeFlags.Info> = {}) =>
   Layer.mergeAll(
     Agent.defaultLayer,
     BackgroundJob.defaultLayer,
-    Bus.defaultLayer,
+    EventV2Bridge.defaultLayer,
     Config.defaultLayer,
     CrossSpawnSpawner.defaultLayer,
     Session.defaultLayer,
@@ -40,6 +43,7 @@ const layer = (flags: Partial<RuntimeFlags.Info> = {}) =>
     SessionStatus.defaultLayer,
     Truncate.defaultLayer,
     ToolRegistry.defaultLayer,
+    Database.defaultLayer,
     RuntimeFlags.layer(flags),
   )
 
@@ -65,7 +69,7 @@ const seed = Effect.fn("TaskToolTest.seed")(function* (title = "Pinned") {
     model: ref,
     time: { created: Date.now() },
   })
-  const assistant: MessageV2.Assistant = {
+  const assistant: SessionLegacy.Assistant = {
     id: MessageID.ascending(),
     role: "assistant",
     parentID: user.id,
@@ -95,7 +99,7 @@ function stubOps(opts?: { onPrompt?: (input: SessionPrompt.PromptInput) => void;
   }
 }
 
-function reply(input: SessionPrompt.PromptInput, text: string): MessageV2.WithParts {
+function reply(input: SessionPrompt.PromptInput, text: string): SessionLegacy.WithParts {
   const id = MessageID.ascending()
   return {
     info: {