refactor: sjednoceni skeleton loading a animaci napric vsemi moduly

- AttendanceAdmin: full-page skeleton misto castecneho (header+filtry+karty+tabulka)
- AttendanceHistory: fond karta vzdy v DOM se skeleton behem loading (fix pozdni animace)
- Trips: skeleton odpovida realne strukture (stat cards + tabulka misto circle rows)
- ReceivedInvoices: 3 skeleton radky zvyseny na 5 (konzistence)
- ProjectDetail: notes spinner nahrazen skeleton bloky
- Settings: 2FA text "Nacitani..." nahrazen skeleton line
- Sjednoceny animation delays: 0.05/0.12 opraveny na standardni 0.1/0.15
- OffersTemplates: pridany chybejici stagger delays
- Invoices: opraveny duplicitni delays na spravny stagger
- Attendance sidebar: delay snizen na 0.1 (soucasne s hlavnim obsahem)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/admin/pages/OffersTemplates.jsx

@@ -169,7 +169,7 @@ function ItemTemplatesTab() {
         className="admin-card"
         initial={{ opacity: 0, y: 20 }}
         animate={{ opacity: 1, y: 0 }}
-        transition={{ duration: 0.4 }}
+        transition={{ duration: 0.4, delay: 0.1 }}
       >
         <div className="admin-card-header" style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
           <h3 className="admin-card-title">Šablony položek ({templates.length})</h3>
@@ -442,7 +442,7 @@ function ScopeTemplatesTab() {
         className="admin-card"
         initial={{ opacity: 0, y: 20 }}
         animate={{ opacity: 1, y: 0 }}
-        transition={{ duration: 0.4 }}
+        transition={{ duration: 0.4, delay: 0.1 }}
       >
         <div className="admin-card-header" style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
           <h3 className="admin-card-title">Šablony rozsahu ({templates.length})</h3>