js/app.js (1)

106-114: ⚠️ Potential issue | 🟠 Major | ⚡ Quick win

Normalize loaded records before returning from storage.

JSON.parse(saved) is returned as-is. A malformed/stale item (e.g., missing owner or status) will later throw at filter/render time when calling string methods. Validate that parsed data is an array and normalize each check shape at load time.

Proposed fix

 function loadChecks() {
   const saved = localStorage.getItem(STORAGE_KEY);

   if (!saved) {
     return [...demoChecks];
   }

   try {
-    return JSON.parse(saved);
+    const parsed = JSON.parse(saved);
+    if (!Array.isArray(parsed)) return [...demoChecks];
+    return parsed.map((item) => ({
+      id: Number(item?.id ?? Date.now()),
+      title: String(item?.title ?? "").trim(),
+      category: String(item?.category ?? ""),
+      priority: String(item?.priority ?? "Low"),
+      status: String(item?.status ?? "Pending"),
+      owner: String(item?.owner ?? "Unassigned"),
+      dueDate: String(item?.dueDate ?? new Date().toISOString().slice(0, 10)),
+      notes: String(item?.notes ?? ""),
+    }));
   } catch (error) {
     console.warn("Could not parse saved launch checks.", error);
     return [...demoChecks];
   }
 }

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@js/app.js` around lines 106 - 114, The code in the try block returns the
parsed JSON without validating its structure or normalizing the data. After the
JSON.parse(saved) call, add validation to ensure the returned data is an array,
and then normalize each check object in that array to guarantee required fields
like owner and status exist with default values if missing. This prevents
runtime errors later when the filter and render operations attempt to call
string methods on potentially undefined properties. Return the normalized array
instead of the raw parsed result.