feat(api): add SSH private key auth support and verify SSH/E2B providers
- SSH Provider: add automatic private key detection in ssh_password
field (RSA/Ed25519/ECDSA) alongside existing password auth.
- SSH Provider verified end-to-end on EC2: connection, command exec,
CLI binary upload via SFTP, dify init, tool symlink creation.
- E2B Provider verified: cloud sandbox creation, CLI binary upload,
dify init with tool symlinks.
- Add linux/amd64 CLI binary for E2B (x86_64 cloud sandboxes).
Made-with: Cursor
Yansong Zhang
218c10ba4f