fix(scripts): exclude false positives from TODO scan

Exclude false positive TODOs from scan results:
- todo-scan.js script's own markers (in comments/strings)
- Documentation comments that mention TODO intentionally

This ensures core code count accurately reflects production code TODOs.

Verification:
- Core code count now shows actual production TODOs only
- Script's own markers excluded
- Documentation comments excluded

scripts/todo-scan.js

@@ -72,11 +72,18 @@ function scanFile(fp) {
   const lines = text.split(/\r?\n/);
 
   const hits = [];
+  const relPath = path.relative(ROOT, fp).replace(/\\/g, "/");
+  const isThisScript = relPath === "scripts/todo-scan.js";
+  
   for (let i = 0; i < lines.length; i++) {
     const line = lines[i];
     for (const m of MARKERS) {
       // require marker as a token-ish substring
       if (line.includes(m + ":") || line.includes(m + " ")) {
+        // Exclude this script's own markers (in comments/strings)
+        if (isThisScript) continue;
+        // Exclude comment-only lines that are documentation
+        if (line.trim().startsWith("*") && line.includes("intentionally")) continue;
         hits.push({ line: i + 1, marker: m, text: line.trim() });
         break;
       }