feat: add scoped history and artifacts

src/mcp/query-server.ts

@@ -8,6 +8,7 @@ import { localQueryDescriptions, localQueryInputs } from "./local-query-tools.js
 import { allowedQueryTools } from "../runtime/query-mcp-policy.js";
 import { localEvidenceResult } from "./evidence-result.js";
 import { nativeQueryTimeout, queryTimeouts } from "./query-timeouts.js";
+import { saveMcpArtifact } from "./artifact-files.js";
 
 export type LocalQueryName = typeof LOCAL_QUERY_TOOLS[number];
 const productNames = new Set<string>(PRODUCT_MCP_TOOLS);
@@ -16,6 +17,7 @@ export function createQueryMcpHandler(options: {
   internalToken: string; productClient: Pick<McpQueryClient, "query"> | null; productTools: Tool[];
   resolveReader: (id: string) => Promise<QueryOwner | null>;
   executeLocal: (name: LocalQueryName, args: Record<string, unknown>, context: RuntimeSessionContext, signal: AbortSignal) => Promise<unknown>;
+  artifactWorkspace?: (context: RuntimeSessionContext) => Promise<string>;
 }) {
   const definitions: Tool[] = [...options.productTools, ...LOCAL_QUERY_TOOLS.map((name) => ({ name, description: localQueryDescriptions[name],
     inputSchema: z.toJSONSchema(localQueryInputs[name], { io: "input" }) as Tool["inputSchema"], annotations: { readOnlyHint: true, destructiveHint: false, openWorldHint: name === "geocode" } }))];
@@ -38,7 +40,12 @@ export function createQueryMcpHandler(options: {
             // JSON-RPC IDs may restart on a native MCP reconnect. Use a host
             // request key, stable across this client's auth/transport retries,
             // so a later query cannot collide with a saved evidence receipt.
-            return localEvidenceResult(await options.productClient.query(id, owner, definition.name, query, randomUUID(), signal));
+            const result = await options.productClient.query(id, owner, definition.name, query, randomUUID(), signal);
+            if (["export_project_model", "export_sensor_placement"].includes(definition.name) && !result.isError) {
+              if (!options.artifactWorkspace) return rejected("Export workspace unavailable");
+              return await saveMcpArtifact(result, owner.context, await options.artifactWorkspace(owner.context));
+            }
+            return localEvidenceResult(result);
           }
           const value = await options.executeLocal(definition.name as LocalQueryName, args, owner.context, signal);
           signal.throwIfAborted();