feat: add MFA/TOTP auth, PII encryption, agents/leads/inquiries modules, and comprehensive tests

- Add TOTP-based MFA with setup, verify, disable, backup codes, and challenge flow
- Add PII field encryption middleware with AES-256-GCM and deterministic search hashes
- Add agents, inquiries, and leads domain modules with entities, events, value objects
- Add web dashboard pages for inquiries and leads with detail dialogs
- Add 30+ component tests (valuation, charts, listings, search, providers, UI)
- Add Prisma migrations for encryption hash columns and MFA TOTP support
- Fix all ESLint errors (unused imports, duplicate imports, lint auto-fixes)
- Update dependencies and lock file
- Clean up obsolete exploration/QA docs, add audit documentation

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/api/src/modules/inquiries/application/index.ts

@@ -0,0 +1,4 @@
+export { CreateInquiryCommand } from './commands/create-inquiry/create-inquiry.command';
+export { MarkInquiryReadCommand } from './commands/mark-inquiry-read/mark-inquiry-read.command';
+export { GetInquiriesByAgentQuery } from './queries/get-inquiries-by-agent/get-inquiries-by-agent.query';
+export { GetInquiriesByListingQuery } from './queries/get-inquiries-by-listing/get-inquiries-by-listing.query';

apps/api/src/modules/inquiries/domain/entities/index.ts

@@ -0,0 +1 @@
+export { InquiryEntity, type InquiryProps } from './inquiry.entity';

apps/api/src/modules/inquiries/domain/events/index.ts

@@ -0,0 +1,2 @@
+export { InquiryCreatedEvent } from './inquiry-created.event';
+export { InquiryReadEvent } from './inquiry-read.event';

apps/api/src/modules/inquiries/domain/index.ts

@@ -0,0 +1,3 @@
+export * from './entities';
+export * from './events';
+export * from './repositories';

apps/api/src/modules/inquiries/domain/repositories/index.ts

@@ -0,0 +1,6 @@
+export {
+  INQUIRY_REPOSITORY,
+  type IInquiryRepository,
+  type PaginatedResult,
+} from './inquiry.repository';
+export { type InquiryReadDto } from './inquiry-read.dto';