## Summary
- Add non-blocking (incremental) Curve25519 key generation and shared secret via `WC_X25519_NONBLOCK`, modeled after the existing ECC non-blocking pattern (`WC_ECC_NONBLOCK`)
- Implement `curve25519_nb()` and `fe_inv__distinct_nb()` in `fe_low_mem.c` as state-machine variants that return `FP_WOULDBLOCK` to yield after each field multiply
- Add `wc_curve25519_set_nonblock()` API to attach/detach non-blocking context to a key
- Integrate X25519 non-blocking with TLS 1.2/1.3 key share generation and shared secret in `tls.c` and `internal.c` (behind `WC_X25519_NONBLOCK && WOLFSSL_ASYNC_CRYPT_SW`)
- Add `--enable-curve25519=nonblock` configure option (auto-enables `--enable-asynccrypt` and `--enable-asynccrypt-sw`)
- Add X25519 async software dispatch cases in `async.c` and types in `async.h`
- Fix async guard in `curve25519.c` to require `WOLFSSL_ASYNC_CRYPT_SW` (matching other algorithms)
- Overhaul `examples/async/` client/server: non-blocking I/O via `WOLFSSL_USER_IO`, standalone `Makefile`, X25519/ECC mode selection, CI-friendly ready-file sync
- Add `examples/configs/user_settings_curve25519nonblock.h` and CI coverage in `os-check.yml` and new `async-examples.yml` workflow
- Add wolfcrypt test and API test coverage for X25519 non-blocking
- Standardize header guards to WOLFSSL_USER_SETTINGS_H across all files
- Add #if 0/1 gates with labels for easy feature toggling
- Fix bugs: typos in eccnonblock (WOLFSL_SHA*), duplicates in fipsv5/all
- Add NO_DES3_TLS_SUITES alongside NO_DES3 where needed
- Update wolfboot_keytools with upstream PQ algorithms (ML-DSA, LMS, XMSS)
- Add settings.h validation rules with descriptive error messages
- Auto-define NO_DES3_TLS_SUITES when NO_DES3 is set (instead of error)
- Update README.md and add missing files to CI tests
* More PQC configurations
* More CMake setups
* Fix various bugs uncovered by these tests
Added some missing feature additions to CMake to make the example
`user_settings_all.` config file work for the CI test.
Exposes dynamic TLS certificate loading and OCSP stapling to allow applications to load certs lazily.
The server no longer needs to load the CA to staple OCSP responses.
Adds a certificate setup callback (WOLFSSL_CERT_SETUP_CB)
Adds an OCSP status callback to load OCSP responses directly
Adds `wc_NewOCSP`, `wc_FreeOCSP`, and `wc_CheckCertOcspResponse`
Don't call verify twice on the same error
Send correct alert on status response error
David Garske
Tobias Frauenschläger
Juliusz Sosinowicz
gojimmypi
JacobBarthelmeh
Daniel Pouzzner
Sean Parkinson
András Fekete
Bill Phipps
Anthony Hu
Eric Blankenhorn
Andras Fekete
kaleb-himes