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>

vite.config.js

@@ -41,14 +41,21 @@ import { defineConfig } from 'vite'
 
         try {
           if (existsSync(vendorSrc)) {
-            execSync('composer install --no-dev --quiet', { cwd: resolve(__dirname) })
+            try {
+              execSync('composer install --no-dev --quiet', { cwd: resolve(__dirname) })
+            } catch {
+              console.warn('⚠ composer not found, copying vendor as-is')
+            }
             copyFolderSync(vendorSrc, vendorDest)
-            execSync('composer install --quiet', { cwd: resolve(__dirname) })
-            console.log('✓ Vendor folder copied to dist/vendor (production only)')
+            try {
+              execSync('composer install --quiet', { cwd: resolve(__dirname) })
+            } catch {
+              // composer not in PATH - dev deps already present
+            }
+            console.log('✓ Vendor folder copied to dist/vendor')
           }
         } catch (err) {
           console.error('Error copying vendor folder:', err)
-          execSync('composer install --quiet', { cwd: resolve(__dirname) })
         }
 
         console.log('✓ Build complete!')