test(server): reproduce heap exhaustion in overlapping directory searches

scripts/repro-directory-search-memory.py

@@ -0,0 +1,25 @@
+"""Create the real directory tree for the opt-in directory-search memory regression test.
+
+Run from the checkout root, then run:
+PASEO_REPRO_SEARCH_ROOT="$PWD/.diagnose-4879/home" npm exec --workspace=@getpaseo/server -- vitest run src/utils/directory-suggestions-memory.local.e2e.test.ts
+The fixture needs approximately 6 GB of disk space. No heap limit or delay is injected.
+"""
+import os
+import time
+
+root = os.path.join(os.getcwd(), ".diagnose-4879", "home")
+os.makedirs(root, exist_ok=True)
+start = time.monotonic()
+for branch_index in range(100):
+    branch = os.path.join(root, f"repos-{branch_index:03}")
+    os.makedirs(branch, exist_ok=True)
+    for package_index in range(140):
+        package = os.path.join(branch, f"packages-{package_index:03}")
+        os.makedirs(package, exist_ok=True)
+        for component_index in range(100):
+            os.makedirs(os.path.join(package, f"component-{component_index:03}"), exist_ok=True)
+    if branch_index % 10 == 9:
+        print(f"{branch_index + 1} branches built in {time.monotonic() - start:.1f}s", flush=True)
+for name in ["ai-credential-refresh", "ai-engineer-reference", "ai-tevv", "gmail-local-sync"]:
+    os.makedirs(os.path.join(root, "workspace", "projects", name), exist_ok=True)
+print("Created 1,414,106 directories", flush=True)