Add documentation and enhance Conferma entity with QR code tracking

- Add Claude Code documentation (CLAUDE.md) with project overview and development commands
- Add specialized agent configurations (spring-boot-engineer, vue3-frontend-engineer)
- Add feature specifications (check liberatorie, configurazione disponibilità, profilo utente)
- Enhance Conferma entity with codiceQrLink and presenzaConfermata fields
- Update Liquibase changelog and test data for Conferma changes
- Update frontend Conferma component and model with new tracking fields

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/main/webapp/app/shared/model/conferma.model.ts

@@ -4,6 +4,7 @@ import { type IUtenteApp } from '@/shared/model/utente-app.model';
 export interface IConferma {
   id?: number;
   motivoConferma?: string | null;
+  codice?: string | null;
   tipoConferma?: keyof typeof TipoConferma | null;
   confermataDa?: IUtenteApp | null;
 }
@@ -12,6 +13,7 @@ export class Conferma implements IConferma {
   constructor(
     public id?: number,
     public motivoConferma?: string | null,
+    public codice?: string | null,
     public tipoConferma?: keyof typeof TipoConferma | null,
     public confermataDa?: IUtenteApp | null,
   ) {}