Fix catalog-price-check.js served from wrong wwwroot

File was written to repo-root wwwroot/ instead of
src/PowderCoating.Web/wwwroot/ — causing a 404 and MIME type refusal.
Moved to the correct location.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/PowderCoating.Web/wwwroot/js/catalog-price-check.js

@@ -53,7 +53,7 @@
         // Animate progress: fast to ~85%, then slow crawl toward 99%.
         // Uses two easing phases so it never "finishes" before the server responds.
         var start = Date.now();
-        var phase1End = totalSecs * 0.80 * 1000; // 80% of time → 85% progress
+        var phase1End = totalSecs * 0.80 * 1000; // 80% of time -> 85% progress
         var raf;
 
         function tick() {
@@ -61,11 +61,11 @@
             var pct;
 
             if (elapsed < phase1End) {
-                // Phase 1: ease-out from 0 → 85
+                // Phase 1: ease-out from 0 -> 85
                 var t = elapsed / phase1End;
                 pct = 85 * (1 - Math.pow(1 - t, 2));
             } else {
-                // Phase 2: slow crawl 85 → 99 (never quite reaches 99)
+                // Phase 2: slow crawl 85 -> 99 (never quite reaches 99)
                 var t2 = (elapsed - phase1End) / (totalSecs * 1000);
                 pct = 85 + 14 * (1 - Math.exp(-t2 * 1.5));
             }
@@ -76,8 +76,8 @@
 
         raf = requestAnimationFrame(tick);
 
-        // Safety: if the server takes much longer than estimated, keep the overlay up.
-        // The page navigation itself will tear it down.
+        // The page navigation itself tears down the overlay; cancel the RAF to avoid
+        // running after the page is gone.
         window.addEventListener('pagehide', function () {
             cancelAnimationFrame(raf);
         });