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

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

packages/opencode/src/session/tools.ts

@@ -1,4 +1,5 @@
 import { Agent } from "@/agent/agent"
+import { SessionLegacy } from "@opencode-ai/core/session/legacy"
 import { Provider } from "@/provider/provider"
 import { ProviderTransform } from "@/provider/transform"
 import { MCP } from "@/mcp"
@@ -7,7 +8,7 @@ import { Tool } from "@/tool/tool"
 import { ToolJsonSchema } from "@/tool/json-schema"
 import { ToolRegistry } from "@/tool/registry"
 import { Truncate } from "@/tool/truncate"
-import { ModelID } from "@/provider/schema"
+
 import { Plugin } from "@/plugin"
 import type { TaskPromptOps } from "@/tool/task"
 import { type Tool as AITool, tool, jsonSchema, type ToolExecutionOptions, asSchema } from "ai"
@@ -18,6 +19,7 @@ import { SessionProcessor } from "./processor"
 import { PartID } from "./schema"
 import * as Log from "@opencode-ai/core/util/log"
 import { EffectBridge } from "@/effect/bridge"
+import { ProviderV2 } from "@opencode-ai/core/provider"
 
 const log = Log.create({ service: "session.tools" })
 
@@ -27,7 +29,7 @@ export const resolve = Effect.fn("SessionTools.resolve")(function* (input: {
   session: Session.Info
   processor: Pick<SessionProcessor.Handle, "message" | "updateToolCall" | "completeToolCall">
   bypassAgentCheck: boolean
-  messages: MessageV2.WithParts[]
+  messages: SessionLegacy.WithParts[]
   promptOps: TaskPromptOps
 }) {
   using _ = log.time("resolveTools")
@@ -73,7 +75,7 @@ export const resolve = Effect.fn("SessionTools.resolve")(function* (input: {
   })
 
   for (const item of yield* registry.tools({
-    modelID: ModelID.make(input.model.api.id),
+    modelID: ProviderV2.ModelID.make(input.model.api.id),
     providerID: input.model.providerID,
     agent: input.agent,
   })) {
@@ -151,7 +153,7 @@ export const resolve = Effect.fn("SessionTools.resolve")(function* (input: {
           )
 
           const textParts: string[] = []
-          const attachments: Omit<MessageV2.FilePart, "id" | "sessionID" | "messageID">[] = []
+          const attachments: Omit<SessionLegacy.FilePart, "id" | "sessionID" | "messageID">[] = []
           for (const contentItem of result.content) {
             if (contentItem.type === "text") textParts.push(contentItem.text)
             else if (contentItem.type === "image") {