diff --git a/web/e2e/fixtures/error-allowlist.ts b/web/e2e/fixtures/error-allowlist.ts
new file mode 100644
index 0000000000..738c55c1d0
--- /dev/null
+++ b/web/e2e/fixtures/error-allowlist.ts
@@ -0,0 +1,16 @@
+/**
+ * Global allowlist of regex patterns that the error collector ignores.
+ *
+ * Each entry MUST include a comment explaining what it silences and why.
+ * The allowlist is filtered at collection time, so failure messages list
+ * only unfiltered errors.
+ *
+ * Per-spec additions go through the `expectedErrors` test fixture parameter
+ * (see error-collector.ts), not by editing this file. That keeps allowlist
+ * drift visible per-PR rather than buried in shared infrastructure.
+ */
+
+export const GLOBAL_ALLOWLIST: RegExp[] = [
+  // No global entries yet. Add only after triaging which errors are
+  // genuinely benign (e.g. dev-server pings) and which are real bugs.
+];