Split shared RPC handler by domain

packages/shared/src/rpc/modelRpc.ts

@@ -0,0 +1,16 @@
+import type { Db } from "../db/database.js";
+import { getModel, updateModelCell } from "../db/queries.js";
+import { ok } from "./result.js";
+import type { RpcHandlers } from "./types.js";
+
+export function modelHandlers(db: Db): RpcHandlers<"model.get" | "model.updateCell" | "model.runScenario"> {
+  return {
+    "model.get": ({ companyId, tab }) => ok("model.get", getModel(db, companyId, tab)),
+    "model.updateCell": ({ companyId, tab, row, col, value }) =>
+      ok("model.updateCell", updateModelCell(db, companyId, tab, row, col, value)),
+    "model.runScenario": ({ companyId }) => {
+      const model = getModel(db, companyId, "income");
+      return ok("model.runScenario", model);
+    },
+  };
+}