feat: add Key Storage Manager (KSM) module with HSM support
Add luci-app-ksm-manager - comprehensive cryptographic key management
module with hardware security module support for Nitrokey and YubiKey.
Features:
- Cryptographic key management (RSA, ECDSA, Ed25519)
- Hardware Security Module support (Nitrokey, YubiKey)
- Certificate management with CSR generation
- Encrypted secrets storage (AES-256-GCM)
- SSH key management and deployment
- Comprehensive audit logging
- Backup and restore functionality
Implementation:
- 22 RPCD methods for complete key lifecycle management
- 8 LuCI views (overview, keys, HSM, certificates, secrets, SSH, audit, settings)
- Full API client with utility functions
- Comprehensive README with setup and usage guides
Validation:
- All naming conventions verified
- Menu paths match view files
- JSON syntax validated
- JavaScript syntax checked
- RPCD script executable and properly named
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>