Rename Foundry handoffs to tasks (#239)

* Restore foundry onboarding stack

* Consolidate foundry rename

* Create foundry tasks without prompts

* Rename Foundry handoffs to tasks

foundry/packages/backend/src/actors/sandbox-instance/db/schema.ts

@@ -0,0 +1,31 @@
+import { integer, sqliteTable, text } from "rivetkit/db/drizzle";
+
+// SQLite is per sandbox-instance actor instance.
+export const sandboxInstance = sqliteTable("sandbox_instance", {
+  id: integer("id").primaryKey(),
+  metadataJson: text("metadata_json").notNull(),
+  status: text("status").notNull(),
+  updatedAt: integer("updated_at").notNull(),
+});
+
+// Persist sandbox-agent sessions/events in SQLite instead of actor state so they survive
+// serverless actor evictions and backend restarts.
+export const sandboxSessions = sqliteTable("sandbox_sessions", {
+  id: text("id").notNull().primaryKey(),
+  agent: text("agent").notNull(),
+  agentSessionId: text("agent_session_id").notNull(),
+  lastConnectionId: text("last_connection_id").notNull(),
+  createdAt: integer("created_at").notNull(),
+  destroyedAt: integer("destroyed_at"),
+  sessionInitJson: text("session_init_json"),
+});
+
+export const sandboxSessionEvents = sqliteTable("sandbox_session_events", {
+  id: text("id").notNull().primaryKey(),
+  sessionId: text("session_id").notNull(),
+  eventIndex: integer("event_index").notNull(),
+  createdAt: integer("created_at").notNull(),
+  connectionId: text("connection_id").notNull(),
+  sender: text("sender").notNull(),
+  payloadJson: text("payload_json").notNull(),
+});