feat: mobilni responsivita, testy, klavesove zkratky, drag & drop, univerzalizace

- Mobile responsive CSS (touch targets 44px, iOS anti-zoom, reduced motion)
- Vitest setup s 39 testy (formatters, attendanceHelpers, useTableSort)
- Klavesove zkratky (Shift+? napoveda, Ctrl+S ulozit, navigace)
- Drag & drop pro polozky nabidek (@dnd-kit, SortableRow, useSortableList)
- Univerzalizace: odstraneni BOHA brandingu z UI, emailu, PDF
- Smazany nepotrebne soubory (deploy.sh, AUTH_SYSTEM.md, example_design, .htaccess)
- CORS konfigurovatelny pres env promennou

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

.claude/settings.local.json

@@ -21,7 +21,15 @@
       "Read(//tmp/**)",
       "Bash(read f:*)",
       "Bash(find D:\\\\Weby\\\\BOHA Website\\\\New\\\\api:*)",
-      "Bash(find:*)"
+      "Bash(find:*)",
+      "Bash(cd \"D:\\\\Claude\\\\BOHA Website\\\\app\" && npx vite build --mode development 2>&1 | grep -E \"built|error|✓\" | head -10)",
+      "Bash(cd \"D:\\\\Claude\\\\BOHA Website\\\\app\" && for f in api/admin/*.php; do php -l \"$f\" 2>&1; done)",
+      "Bash(cd \"D:\\\\Claude\\\\BOHA Website\\\\app\" && for f in api/admin/handlers/*.php; do php -l \"$f\" 2>&1; done)",
+      "Bash(cd \"D:\\\\Claude\\\\BOHA Website\\\\app\" && \\\\\necho \"=== session \\(no auth\\) ===\" && \\\\\ncurl -s http://localhost:8000/api/admin/session.php 2>&1 && \\\\\necho && echo \"=== refresh \\(no cookie\\) ===\" && \\\\\ncurl -s -X POST http://localhost:8000/api/admin/refresh.php 2>&1 && \\\\\necho && echo \"=== logout \\(no auth\\) ===\" && \\\\\ncurl -s -X POST http://localhost:8000/api/admin/logout.php 2>&1)",
+      "Bash(for f:*)",
+      "Bash(do echo:*)",
+      "Read(//d/Claude/BOHA Website/app/**)",
+      "Bash(done)"
     ]
   }
 }