Administrators have access to all inboxes in an account but the
validate_inbox_access filter only checked InboxMember records, returning
401 for admins not explicitly added as inbox members.
* feat: add per-inbox signature management
- Introduced `InboxSignature` model to manage signatures specific to each inbox.
- Added API endpoints for fetching, creating, updating, and deleting inbox signatures.
- Updated UI components to support inbox-specific signatures, including overrides for signature position and separator.
- Implemented a new composable `useInboxSignatures` for managing inbox signatures in the frontend.
- Enhanced existing components to utilize inbox signatures, including the reply box and message signature settings.
- Added tests for the new inbox signatures functionality, ensuring proper behavior of the API and model validations.
- Updated translations for new UI elements related to inbox signatures.
* feat: implement inbox access validation and add related tests
* feat: enhance inbox signatures fetching and management logic
## Linear:
- https://github.com/chatwoot/chatwoot/issues/486
## Description
This PR implements Multi-Factor Authentication (MFA) support for user
accounts, enhancing security by requiring a second form of verification
during login. The feature adds TOTP (Time-based One-Time Password)
authentication with QR code generation and backup codes for account
recovery.
## Type of change
- [ ] New feature (non-breaking change which adds functionality)
## How Has This Been Tested?
- Added comprehensive RSpec tests for MFA controller functionality
- Tested MFA setup flow with QR code generation
- Verified OTP validation and backup code generation
- Tested login flow with MFA enabled/disabled
## Checklist:
- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my code
- [ ] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules
---------
Co-authored-by: Pranav <pranav@chatwoot.com>
Co-authored-by: Sojan Jose <sojan@pepalo.com>
Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>
