diff --git a/.github/workflows/cross-repo-python-integration.yml b/.github/workflows/cross-repo-python-integration.yml
index 718f87458..fc5e88783 100644
--- a/.github/workflows/cross-repo-python-integration.yml
+++ b/.github/workflows/cross-repo-python-integration.yml
@@ -82,12 +82,11 @@ jobs:
             test_command: xvfb-run --auto-servernum pytest tests/shared_contracts/ --timeout=60 --timeout-method=thread -v --tb=short
             env_name: REQUIRE_REAL_TOOLS_REPO
             sparse_checkout: |
-              chat
-              contracts.py
-              python/src/utils
-              shared
-              sidekick
-              src/shared/python
+              src/chat
+              src/contracts.py
+              src/python/src/utils
+              src/shared
+              src/sidekick
               tests/shared_contracts
               tests/support
 
diff --git a/src/p1am_control_system/frontend/src/lib/explorer/csv.ts b/src/p1am_control_system/frontend/src/lib/explorer/csv.ts
index 8c8562ac8..02830cfe4 100644
--- a/src/p1am_control_system/frontend/src/lib/explorer/csv.ts
+++ b/src/p1am_control_system/frontend/src/lib/explorer/csv.ts
@@ -177,8 +177,11 @@ export function parseCsv(text: string): CsvTable {
   const colCount = header.length;
 
   // Materialize each source column's raw cells (padding short rows).
-  // ⚡ Bolt Optimization: Replace dataRows.map() per column with a single-pass loop
-  const rawColumns: string[][] = Array.from({ length: colCount }, () => new Array(dataRows.length));
+  // ⚡ Bolt Optimization: Avoid Array.from({ length }) overhead by using new Array + for-loop
+  const rawColumns: string[][] = new Array(colCount);
+  for (let c = 0; c < colCount; c += 1) {
+    rawColumns[c] = new Array(dataRows.length);
+  }
   for (let r = 0; r < dataRows.length; r += 1) {
     const row = dataRows[r];
     for (let c = 0; c < colCount; c += 1) {