feat(admin): truck report link + pre-fill form via ?truck_id=

Scanning truck QR opens /ims/report?truck_id=<id>, which pre-selects
incident_type=transport and the truck in the form. TruckManager shows
"Report link / QR target" per truck, mirroring zones.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CPf5Rc8QPx6V8KLEEgfKEQ

components/admin/truck-manager.tsx

@@ -89,16 +89,25 @@ export function TruckManager({ trucks }: Props) {
         ) : (
           <ul className="divide-y divide-gray-100">
             {trucks.map(tk => (
-              <li key={tk.id} className="flex items-center gap-3 py-2">
-                <span className="text-sm font-medium text-gray-900">{tk.truck_no}</span>
-                {tk.carrier && (
-                  <span className="text-xs text-gray-500">{tk.carrier}</span>
-                )}
-                {!tk.active && (
-                  <span className="ml-auto text-xs font-medium px-2 py-0.5 rounded-full bg-gray-100 text-gray-500">
-                    Inactive
-                  </span>
-                )}
+              <li key={tk.id} className="flex items-center justify-between py-2">
+                <div className="flex items-center gap-3">
+                  <span className="text-sm font-medium text-gray-900">{tk.truck_no}</span>
+                  {tk.carrier && (
+                    <span className="text-xs text-gray-500">{tk.carrier}</span>
+                  )}
+                  {!tk.active && (
+                    <span className="text-xs font-medium px-2 py-0.5 rounded-full bg-gray-100 text-gray-500">
+                      Inactive
+                    </span>
+                  )}
+                </div>
+                <a
+                  href={`/ims/report?truck_id=${tk.id}`}
+                  target="_blank"
+                  className="text-xs text-blue-600 hover:underline"
+                >
+                  Report link / QR target
+                </a>
               </li>
             ))}
           </ul>