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

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

packages/opencode/src/session/message.ts

@@ -1,9 +1,10 @@
 import { Schema } from "effect"
 import { SessionID } from "./schema"
-import { ModelID, ProviderID } from "../provider/schema"
+
 import { NonNegativeInt } from "@opencode-ai/core/schema"
 import { MessageError } from "./message-error"
 import { AuthError, OutputLengthError } from "./message-error"
+import { ProviderV2 } from "@opencode-ai/core/provider"
 export { AuthError, OutputLengthError } from "./message-error"
 
 export const ToolCall = Schema.Struct({
@@ -119,8 +120,8 @@ export const Info = Schema.Struct({
     assistant: Schema.optional(
       Schema.Struct({
         system: Schema.Array(Schema.String),
-        modelID: ModelID,
-        providerID: ProviderID,
+        modelID: ProviderV2.ModelID,
+        providerID: ProviderV2.ID,
         path: Schema.Struct({
           cwd: Schema.String,
           root: Schema.String,