feat: P1 quick wins - useDebounce hook, DB indexy, odstraneni TCPDF

- useDebounce hook (300ms) integrovan do useListData pro debounce hledani
- useListData rozsiren o page/perPage/pagination parametry (priprava pro P2)
- Migracni SQL s indexy na attendance, invoices, quotations, refresh_tokens, audit_log
- Odstranen nepouzivany TCPDF z composer.json
- Vite build plugin: graceful handling kdyz composer neni v PATH

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

composer.json

@@ -5,7 +5,6 @@
     "require": {
         "php": ">=8.1",
         "firebase/php-jwt": "^6.11",
-        "tecnickcom/tcpdf": "^6.7",
         "robthree/twofactorauth": "^3.0",
         "chillerlan/php-qrcode": "^5.0"
     },