fix: validate ticket repository summaries

web/workspace/src/lib/workspace/api/workspace-model.ts

@@ -1,3 +1,4 @@
+import type { ApiResult } from "$lib/workspace/api/http";
 import type {
   Diagnostic,
   GitCommitSummary,
@@ -529,6 +530,22 @@ export function parseRepositoryListResponse(
   };
 }
 
+export function parseRepositoryListApiResult(
+  result: ApiResult<unknown>,
+): ApiResult<RepositoryListResponse> {
+  if (result.data === null) return { data: null, error: result.error };
+  try {
+    return { data: parseRepositoryListResponse(result.data), error: null };
+  } catch (cause) {
+    return {
+      data: null,
+      error: cause instanceof Error
+        ? cause.message
+        : "invalid repository list response",
+    };
+  }
+}
+
 export function parseRepositoryDetailResponse(
   value: unknown,
 ): RepositoryDetailResponse {

web/workspace/src/routes/w/[workspaceId]/tickets/[ticketId]/+page.ts

@@ -1,14 +1,12 @@
 import { redirect } from "@sveltejs/kit";
 import { loadJson, workspaceApiPath } from "$lib/workspace/api/http";
+import { parseRepositoryListApiResult } from "$lib/workspace/api/workspace-model";
 import {
   canonicalResourceReference,
   resourceKey,
 } from "$lib/workspace/resource-links";
 import type { WorkspaceOrchestratorStatus } from "$lib/workspace/tickets/ticket-panel";
-import type {
+import type { TicketDetail } from "$lib/workspace/sidebar/types";
-  RepositoryListResponse,
-  TicketDetail,
-} from "$lib/workspace/sidebar/types";
 import type { PageLoad } from "./$types";
 
 export const load = (async ({ fetch, params }) => {
@@ -17,9 +15,9 @@ export const load = (async ({ fetch, params }) => {
     params.workspaceId,
     `/tickets/${encodeURIComponent(reference)}`,
   );
-  const [ticket, repositories, orchestrator] = await Promise.all([
+  const [ticket, repositoriesRaw, orchestrator] = await Promise.all([
     loadJson<TicketDetail>(fetch, ticketPath),
-    loadJson<RepositoryListResponse>(
+    loadJson<unknown>(
       fetch,
       workspaceApiPath(params.workspaceId, "/repositories"),
     ),
@@ -42,6 +40,8 @@ export const load = (async ({ fetch, params }) => {
       );
     }
   }
+  const repositories = parseRepositoryListApiResult(repositoriesRaw);
+
   return {
     workspaceId: params.workspaceId,
     ticketId: ticket.data?.id ?? reference,

web/workspace/tests/workspace-model.test.ts

@@ -3,6 +3,7 @@ declare const Deno: {
 };
 
 import {
+  parseRepositoryListApiResult,
   parseRepositoryListResponse,
   parseWorkspaceResponse,
 } from "../src/lib/workspace/api/workspace-model.ts";
@@ -55,6 +56,24 @@ Deno.test("stale repository aliases fail closed at the JSON boundary", () => {
   );
 });
 
+Deno.test("repository API result converts stale payloads into bounded page errors", () => {
+  const result = parseRepositoryListApiResult({
+    data: {
+      workspace_id: "w-a",
+      items: { main: repositoryList.items[0] },
+      source: "workspace-control-plane",
+      diagnostics: [],
+    },
+    error: null,
+  });
+  if (result.data !== null) {
+    throw new Error("stale payload must not reach the page");
+  }
+  if (!result.error?.includes("items must be an array")) {
+    throw new Error(`unexpected bounded error: ${result.error}`);
+  }
+});
+
 Deno.test("workspace response requires the permission projection", () => {
   const stale = {
     workspace_id: "w-a",