feat(slip-preview): render PDFs in an iframe instead of download-only

src/components/slip-preview.tsx

@@ -0,0 +1,70 @@
+"use client";
+
+import { Download, FileImage } from "lucide-react";
+import { PB_BASE_URL } from "@/lib/pb";
+
+/**
+ * Renders a delivery-note slip image or PDF download link.
+ *
+ * `filename` is the PB file-store path PocketBase stores on the
+ * `delivery_notes.slip_image` field — shaped `recordId/collectionId/stored`.
+ * PB exposes the bytes at
+ *   {PB_BASE_URL}/api/files/<collectionId>/<recordId>/<encoded stored path>
+ * so we split + reassemble + URL-encode to fetch from the browser.
+ *
+ * Shared between the PO detail view (existing) and the "Awaiting PO
+ * assignment" modal (new). Keep the URL builder consistent with
+ * api/delivery-notes/[id]/slip/route.ts which uses the same pattern
+ * server-side.
+ */
+export function SlipPreview({ filename }: { filename: string }) {
+  if (!filename) {
+    return (
+      <div className="flex items-center justify-center gap-2 rounded-md border border-dashed border-border bg-muted/30 p-6 text-sm text-muted-foreground">
+        <FileImage className="h-6 w-6" />
+        <span>No slip uploaded for this delivery note.</span>
+      </div>
+    );
+  }
+  const parts = filename.split("/");
+  const recordId = parts[0];
+  const collectionId = parts[1];
+  const stored = parts.slice(2).join("/");
+  const url = `${PB_BASE_URL}/api/files/${collectionId}/${recordId}/${encodeURIComponent(stored)}`;
+  const isPdf = filename.toLowerCase().endsWith(".pdf");
+  return (
+    <div className="space-y-3">
+      {isPdf ? (
+        <>
+          <iframe
+            src={url}
+            title="Delivery slip"
+            className="h-[70vh] w-full rounded-md border border-border bg-white"
+          />
+          <p className="text-xs text-muted-foreground">
+            <a
+              href={url}
+              target="_blank"
+              rel="noreferrer"
+              className="inline-flex items-center gap-1.5 text-[#F2B165] hover:underline"
+            >
+              <Download className="h-3.5 w-3.5" />
+              Download PDF slip
+            </a>
+            {" · opens in a new tab if the viewer above is blank"}
+          </p>
+        </>
+      ) : (
+        // eslint-disable-next-line @next/next/no-img-element
+        <img
+          src={url}
+          alt="Delivery slip"
+          className="max-h-[70vh] w-full rounded-md border border-border object-contain"
+        />
+      )}
+      <p className="text-xs text-muted-foreground">
+        Stored at <span className="font-mono">{filename}</span>
+      </p>
+    </div>
+  );
+}