feat(core): moving sessions (#30640)

packages/core/src/session/event.ts

@@ -7,6 +7,8 @@ import { ToolOutput } from "../tool-output"
 import { V2Schema } from "../v2-schema"
 import { FileAttachment, Prompt } from "./prompt"
 import { SessionSchema } from "./schema"
+import { Location } from "../location"
+import { RelativePath } from "../schema"
 
 export { FileAttachment }
 
@@ -65,6 +67,17 @@ export const ModelSwitched = EventV2.define({
 })
 export type ModelSwitched = typeof ModelSwitched.Type
 
+export const Moved = EventV2.define({
+  type: "session.next.moved",
+  ...options,
+  schema: {
+    ...Base,
+    location: Location.Ref,
+    subdirectory: RelativePath.pipe(Schema.optional),
+  },
+})
+export type Moved = typeof Moved.Type
+
 export const Prompted = EventV2.define({
   type: "session.next.prompted",
   ...options,
@@ -387,6 +400,7 @@ export namespace Compaction {
 const DurableDefinitions = [
   AgentSwitched,
   ModelSwitched,
+  Moved,
   Prompted,
   Synthetic,
   Shell.Started,

packages/core/src/session/message-updater.ts

@@ -142,6 +142,7 @@ export function update(adapter: Adapter, event: SessionEvent.Event) {
           }),
         )
       },
+      "session.next.moved": () => Effect.void,
       "session.next.prompted": (event) => {
         return adapter.appendMessage(
           new SessionMessage.User({

packages/core/src/session/projector.ts

@@ -10,6 +10,7 @@ import { WorkspaceTable } from "../control-plane/workspace.sql"
 import { SessionMessage } from "./message"
 import { SessionMessageUpdater } from "./message-updater"
 import { SessionInput } from "./input"
+import { WorkspaceV2 } from "../workspace"
 import { MessageTable, PartTable, SessionMessageTable, SessionTable } from "./sql"
 import type { DeepMutable } from "../schema"
 
@@ -245,6 +246,19 @@ export const layer = Layer.effectDiscard(
         .run()
         .pipe(Effect.orDie),
     )
+    yield* events.project(SessionEvent.Moved, (event) =>
+      db
+        .update(SessionTable)
+        .set({
+          directory: event.data.location.directory,
+          path: event.data.subdirectory,
+          workspace_id: event.data.location.workspaceID ? WorkspaceV2.ID.make(event.data.location.workspaceID) : null,
+          time_updated: DateTime.toEpochMillis(event.data.timestamp),
+        })
+        .where(eq(SessionTable.id, event.data.sessionID))
+        .run()
+        .pipe(Effect.orDie),
+    )
     yield* events.project(SessionV1.Event.Deleted, (event) =>
       db.delete(SessionTable).where(eq(SessionTable.id, event.data.sessionID)).run().pipe(Effect.orDie),
     )