huskies: merge 921

frontend/src/api/gateway.ts

@@ -54,6 +54,21 @@ export interface ServerMode {
 	mode: "gateway" | "standard";
 }
 
+/// Type guard: verify that an unknown value has the AllProjectsPipeline shape.
+/// Prevents silent "no active stories" when the backend response shape drifts.
+function isAllProjectsPipeline(value: unknown): value is AllProjectsPipeline {
+	if (typeof value !== "object" || value === null) return false;
+	const v = value as Record<string, unknown>;
+	if (typeof v.active !== "string") return false;
+	if (typeof v.projects !== "object" || v.projects === null) return false;
+	for (const proj of Object.values(v.projects as Record<string, unknown>)) {
+		if (typeof proj !== "object" || proj === null) return false;
+		const p = proj as Record<string, unknown>;
+		if (!Array.isArray(p.active) && typeof p.error !== "string") return false;
+	}
+	return true;
+}
+
 async function gatewayRequest<T>(
 	path: string,
 	options: RequestInit = {},
@@ -164,11 +179,15 @@ export const gatewayApi = {
 			const text = await res.text();
 			throw new Error(text || `Request failed (${res.status})`);
 		}
-		const rpc = await res.json() as { result?: AllProjectsPipeline; error?: { message: string } };
+		const rpc = await res.json() as { result?: unknown; error?: { message: string } };
 		if (rpc.error) {
 			throw new Error(rpc.error.message);
 		}
-		return rpc.result!;
+		const result = rpc.result;
+		if (!isAllProjectsPipeline(result)) {
+			throw new Error("pipeline.get returned unexpected shape");
+		}
+		return result;
 	},
 
 	/// Switch the active project via the MCP switch_project tool.