diff --git a/AGENTS.md b/AGENTS.md
new file mode 100644
index 000000000..643577dfa
--- /dev/null
+++ b/AGENTS.md
@@ -0,0 +1,9 @@
+<!-- BEGIN:nextjs-agent-rules -->
+
+# This is NOT the Next.js you know
+
+This version has breaking changes — APIs, conventions, and file structure may all differ from your training data. Read the relevant guide in `node_modules/next/dist/docs/` (resolved from this file's directory; in monorepos the `next` package may not be visible from the repo root) before writing any code. Heed deprecation notices.
+
+This block is written and re-added by `next dev` — verify at `node_modules/next/dist/server/lib/generate-agent-files.js`. Removing it from a diff only re-creates the uncommitted change; committing it with your work keeps the tree clean.
+
+<!-- END:nextjs-agent-rules -->
diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 100644
index 000000000..43c994c2d
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1 @@
+@AGENTS.md
diff --git a/e2e/goals.spec.ts b/e2e/goals.spec.ts
index d630b6033..13fcad59c 100644
--- a/e2e/goals.spec.ts
+++ b/e2e/goals.spec.ts
@@ -274,7 +274,7 @@ test("[Goals E2E] deleting a goal removes it from the list", async ({
   });
 
   // DELETE /api/goals/:id
-  await page.route("**/api/goals/**", async (route) => {
+  await page.route(/\/api\/goals\/(?!sync).*/, async (route) => {
     if (route.request().method() === "DELETE") {
       const url = route.request().url();
       const id = url.split("/api/goals/")[1]?.split("?")[0];