feat(quotes,units): official-invoice badge, conversion text wrapping, seeded fixed conversions, universal proforma, EditModal fixes

1) Quote card header: an official/unofficial badge (رسمی / غیررسمی) renders next to the supplier name from quotes.is_official (the «فاکتور رسمی» checkbox) — green for official, muted slate for unofficial.

2) Conversion Factors sidebar: the material group and variant labels no longer truncate with ellipsis — whitespace-normal + break-words so long Persian names wrap cleanly to the next line.

3) Global fixed conversions are now seeded in the unified seeder (app/db/init_db.py — the same file that seeds categories, base units and the superuser path), NOT hardcoded in the frontend: تن→کیلوگرم (1000), کیلوگرم→گرم (1000), هزار عدد→عدد (1000). The supporting units (گرم, هزار عدد) were added to the idempotent BASE_UNITS seed; inserts use ON CONFLICT (from_unit, to_unit) DO NOTHING against the uq_standard_conversion key so every startup is safe. Verified live: 3 rows after first boot AND still 3 rows after an api restart.

4) Universal proforma attachments: the Edit modal now has a پیش‌فاکتورها section (list/upload/delete via the existing MinIO-backed files API) alongside the invoices section, active at every quote lifecycle stage — including accepted/arrived and receipts-locked quotes (the section is deliberately not gated by hasReceipts; the backend already permits uploads in any status). View/delete of existing proformas unchanged elsewhere.

5) EditModal fixes: (a) the supplier Combobox no longer opens on mount — Radix Dialog autofocus was triggering its onFocus; Combobox gains an openOnFocus prop (default true) and the modal passes false, so the dropdown now opens only on explicit click or typing; (b) the line-item material field binds to the material's own name (m.name) instead of its category relation, and the save path matches materials by name+brand+specs accordingly.

Validated: python compile, api + frontend image builds (tsc + vite) clean; seeding verified against the live local DB.

frontend/src/components/Combobox.tsx

@@ -25,6 +25,9 @@ export interface ComboboxProps {
   onAdd?: (val: string) => void;
   onInputChange?: (val: string) => void;
   onBlur?: () => void;
+  // با false، فوکوسِ برنامه‌ای (مثل فوکوسِ خودکار Dialog) منو را باز نمی‌کند —
+  // فقط کلیک یا تایپِ صریح کاربر بازش می‌کند.
+  openOnFocus?: boolean;
 }
 
 function toItem(x: ComboboxSourceItem): ComboboxItem {
@@ -49,6 +52,7 @@ export function Combobox({
   onAdd,
   onInputChange,
   onBlur,
+  openOnFocus = true,
 }: ComboboxProps) {
   const [text, setText] = useState(value ?? "");
   const [open, setOpen] = useState(false);
@@ -132,9 +136,13 @@ export function Combobox({
         onChange={(e) => {
           setText(e.target.value);
           setHighlight(-1);
+          if (!open) setOpen(true);
           onInputChange?.(e.target.value);
         }}
-        onFocus={() => setOpen(true)}
+        onFocus={() => {
+          if (openOnFocus) setOpen(true);
+        }}
+        onClick={() => setOpen(true)}
         onBlur={onBlur}
         onKeyDown={onKeyDown}
       />