revert: restore production to the state before 730d0bd (PM/RBAC work moved to 'pm')

Their three commits (730d0bd, 5a9b543, 387edfb) reached production by push and
auto-deployed. 387edfb expects a users.username column that the live database does
not have, so POST /api/v1/auth/login was returning HTTP 500. Their schema changes
never applied either (projects still has only id, name, description, start_date,
pm_user_id, created_at), so nothing depends on the reverted code.

This commit sets the tree back to exactly a02b3ea — verified with git diff against
it — while keeping history linear: the work itself is preserved on 'pm' at 387edfb.

frontend/src/pages/Dashboard/EditModal.tsx

@@ -86,6 +86,7 @@ export function EditModal({ quoteId, onClose }: EditModalProps) {
   const [selectedProjects, setSelectedProjects] = useState<string[]>([]);
   const [notes, setNotes] = useState("");
   const [invoices, setInvoices] = useState<Attachment[]>([]);
+  const [proformas, setProformas] = useState<Attachment[]>([]);
   const [itemRows, setItemRows] = useState<EditItemRow[]>([]);
   const [tsCards, setTsCards] = useState<EditTsCard[]>([]);
   const [quoteDate, setQuoteDate] = useState<string | null>(null);
@@ -189,6 +190,10 @@ export function EditModal({ quoteId, onClose }: EditModalProps) {
       .list(quoteId, "invoice")
       .then((list) => alive && setInvoices(list))
       .catch(() => alive && setInvoices([]));
+    void api.files
+      .list(quoteId, "proforma")
+      .then((list) => alive && setProformas(list))
+      .catch(() => alive && setProformas([]));
     return () => {
       alive = false;
     };
@@ -314,6 +319,7 @@ export function EditModal({ quoteId, onClose }: EditModalProps) {
     next.projects = [...selectedProjects];
     next.notes = notes.trim();
     next.invoices = invoices;
+    next.proformas = proformas;
 
     const tsIdMap: Record<string, string> = {};
     const newTermsheets: Termsheet[] = [];
@@ -865,6 +871,25 @@ export function EditModal({ quoteId, onClose }: EditModalProps) {
                     loadPreview={(a) => api.files.previewUrl(q.id, "invoice", a.id!)}
                   />
                 </div>
+
+                {/* پیش‌فاکتورها — در همه‌ی مراحل چرخه‌ی پیشنهاد قابل افزودن/ویرایش است */}
+                <div className="rounded-xl border border-gray-200 bg-white p-3.5 sm:p-4 space-y-2 shadow-xs">
+                  <div className="text-xs font-bold text-gray-900">پیش‌فاکتورها</div>
+                  <FileList
+                    files={proformas}
+                    onChange={setProformas}
+                    upload={(f) => api.files.upload(q.id, "proforma", f)}
+                    onDelete={(a) =>
+                      a.id &&
+                      void api.files.remove(q.id, "proforma", a.id).catch((err) =>
+                        toast.error(err instanceof Error ? err.message : "حذف پیش‌فاکتور ناموفق بود"),
+                      )
+                    }
+                    onDownload={(a) => api.files.download(q.id, "proforma", a.id!, a.name)}
+                    loadPreview={(a) => api.files.previewUrl(q.id, "proforma", a.id!)}
+                    label="افزودن پیش‌فاکتور"
+                  />
+                </div>
               </div>
             )}
           </div>