feat: improve CCA preauth cell filling, implants category, preauth no recording

- Selenium: bulletproof Wait→Click→Clear→Type→Verify for tooth, billed amt cells
- Selenium: fix billed amt to click td[23] (correct column) to trigger edit mode
- Selenium: skip tentative date (auto-filled by page after tooth entry)
- Frontend: add Implants category with Implant/Abut/Crown, Fixture, Abutment, Crown buttons (D6010/D6057/D6058)
- Frontend: pdf-preview-modal renders PNG screenshots as <img> instead of PDF iframe
- Backend: CCA preauth route creates claim record if none exists
- Backend: CCA preauth processor saves authNumber into claimNumber column after submission

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

apps/Frontend/src/components/insurance-status/pdf-preview-modal.tsx

@@ -54,6 +54,7 @@ export function PdfPreviewModal({
   autoDownload = false,
 }: Props) {
   const [fileBlobUrl, setFileBlobUrl] = useState<string | null>(null);
+  const [isImage, setIsImage] = useState(false);
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
   const [resolvedFilename, setResolvedFilename] = useState<string | null>(null);
@@ -98,8 +99,13 @@ export function PdfPreviewModal({
         const arrayBuffer = await res.arrayBuffer();
         if (aborted) return;
 
-        const blob = new Blob([arrayBuffer], { type: "application/pdf" });
+        const lowerName = finalName.toLowerCase();
+        const isPng = lowerName.endsWith(".png");
+        const isJpg = lowerName.endsWith(".jpg") || lowerName.endsWith(".jpeg");
+        const mimeType = isPng ? "image/png" : isJpg ? "image/jpeg" : "application/pdf";
+        const blob = new Blob([arrayBuffer], { type: mimeType });
         objectUrl = URL.createObjectURL(blob);
+        setIsImage(isPng || isJpg);
         setFileBlobUrl(objectUrl);
 
         if (autoDownload) {
@@ -132,6 +138,7 @@ export function PdfPreviewModal({
       controller.abort();
       if (objectUrl) URL.revokeObjectURL(objectUrl);
       setFileBlobUrl(null);
+      setIsImage(false);
       setError(null);
       setLoading(false);
       setResolvedFilename(null);
@@ -194,12 +201,20 @@ export function PdfPreviewModal({
           {loading && <div>Loading PDF…</div>}
           {error && <div className="text-destructive">Error: {error}</div>}
           {fileBlobUrl && (
-            <iframe
-              title="PDF Preview"
-              src={fileBlobUrl}
-              className="w-full h-full border"
-              style={{ minHeight: 0 }}
-            />
+            isImage ? (
+              <img
+                src={fileBlobUrl}
+                alt={resolvedFilename ?? "Preview"}
+                className="max-w-full max-h-full object-contain mx-auto"
+              />
+            ) : (
+              <iframe
+                title="PDF Preview"
+                src={fileBlobUrl}
+                className="w-full h-full border"
+                style={{ minHeight: 0 }}
+              />
+            )
           )}
         </div>
       </div>