feat(utilities+vault): TVA configurable rate, scale/rooms calculators, multi-user vault
Mini Utilities:
- TVA calculator: rate now configurable (5%/9%/19%/21% presets + custom input)
replaces hardcoded 19% constant; displays effective rate in results
- New tab: Calculator scară desen — real↔drawing conversion with 6 scale presets
(1:50..1:5000) + custom, shows cm equivalent for drawing→real
- New tab: Calculator suprafețe camere — multi-room area accumulator
(name + W×L×H), live m²/m³ per room, running total, copy-all
Password Vault:
- New VaultUser type: { username, password, email?, notes? }
- VaultEntry.additionalUsers: VaultUser[] — backward compat (defaults to [])
- VaultForm: collapsible "Utilizatori suplimentari" section, add/remove rows
- Card list: badge showing count of additional users when present
- useVault: normalizes legacy entries (additionalUsers ?? [])
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
AI Assistant
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