Task #668: Rename Protocol side-menu items (bilingual AR/EN)

Relabeled three Protocol (العلاقات العامة والمراسم) menu items to match real usage:
- photos: "تصوير" -> "الصور" / "Photos"
- gifts (item catalog where أصناف are added): "الإهداءات" -> "المستودع" / "Warehouse"
- issues (giving gifts out): "طلبات الصرف" -> "الإهداءات" / "Dedications"

Swapped menu icons to match new meanings: gifts->Warehouse, issues->Gift,
photos->ImageIcon. Removed now-unused imports (PackageCheck, Camera).

Grouped المستودع + الإهداءات under one expandable submenu (parent label
"الهدايا"/"Gifts", new i18n key protocol.tabs.giftsGroup, HandHeart icon,
ChevronDown toggle). Group auto-expands when a child tab is active; state
giftsGroupOpen. RTL-aware (ms-auto chevron, md:ps-6 child indent).

Aligned in-screen wording with new names in both locales:
dashboard.pendingIssues, issues.new, issues.empty reworded from
issuance/صرف to dedication/إهداء.

Deviation: submenu grouping and parent-group naming ("الهدايا") were an
interpretation of the user's "sub-menu" request (user_query was unavailable
during planning). Kept scope tight: remaining secondary "issuance/صرف"
strings in reports/actions/dashboard stats (e.g. giftsIssuedThisMonth,
actions.issued, reports.byGift) were left unchanged and proposed as a
follow-up.

Unchanged (deliberately): internal tab keys (gifts/issues/photos) and URL
slugs (gifts, gift-issues, photos) so deep links keep working. No feature,
API, or data changes.

Verified: pnpm --filter @workspace/tx-os run typecheck passes; architect
code review passed after issues icon corrected to Gift.

artifacts/tx-os/src/locales/ar.json

@@ -1669,9 +1669,10 @@
       "dashboard": "لوحة المعلومات",
       "bookings": "حجوزات القاعات",
       "external": "اللقاءات الخارجية",
-      "gifts": "الإهداءات",
-      "issues": "طلبات الصرف",
-      "photos": "تصوير",
+      "giftsGroup": "الهدايا",
+      "gifts": "المستودع",
+      "issues": "الإهداءات",
+      "photos": "الصور",
       "reports": "التقارير",
       "audit": "سجل النشاط",
       "rooms": "القاعات"
@@ -1704,7 +1705,7 @@
       "pendingBookings": "حجوزات بانتظار الاعتماد",
       "upcomingExternal": "لقاءات خارجية قادمة",
       "giftStock": "إجمالي مخزون الهدايا",
-      "pendingIssues": "طلبات صرف معلّقة",
+      "pendingIssues": "إهداءات معلّقة",
       "roomsAvailableNow": "القاعات المتاحة الآن",
       "giftsIssuedThisMonth": "الدروع المصروفة هذا الشهر"
     },
@@ -1763,8 +1764,8 @@
       "empty": "لا توجد قاعات."
     },
     "issues": {
-      "new": "طلب صرف",
-      "empty": "لا توجد طلبات صرف.",
+      "new": "إهداء جديد",
+      "empty": "لا توجد إهداءات.",
       "recipient": "المستفيد",
       "gift": "الصنف",
       "occasion": "المناسبة",