feat: add TNC solver and parameter transforms

TODO.md

@@ -183,7 +183,7 @@ numerical work against analytic cases and reference implementations.
   factorizations, and feasibility and stationarity diagnostics. This is a
   larger project than the current barrier and augmented-Lagrangian adapters.
 - [ ] **Assess remaining local methods.** Consider Powell's direction-set
-  method, line-search Newton-CG, TNC, GLTR/`trust-krylov`, and SR1 Hessian
+  method, line-search Newton-CG, GLTR/`trust-krylov`, and SR1 Hessian
   updates when a workload demonstrates value. Powell's direction-set method
   is distinct from NEWUOA and BOBYQA; GLTR is distinct from Steihaug CG.
   Compare against [SciPy's local

crates/basin/COPYRIGHT

@@ -5,6 +5,35 @@ LICENSE-MIT for the full texts.
 Basin incorporates code derived from third-party software. The required notices
 are reproduced below.
 
+================================================================================
+sisyfuzz 0.1.0 (https://docs.rs/crate/sisyfuzz/0.1.0/source/)
+================================================================================
+
+The TNC solver, its limited-memory preconditioner, and the parameter-transform
+adapter (src/solver/tnc.rs, src/solver/tnc/history.rs, and
+src/core/parameter_transform.rs) are adapted from sisyfuzz 0.1.0.
+
+Copyright 2026 Frans Henskens
+
+The upstream code is licensed under the Apache License, Version 2.0. Its author
+submitted this adaptation under Basin's contribution terms, licensing the
+contribution under either MIT or Apache-2.0, at the recipient's option.
+See LICENSE-MIT and LICENSE-APACHE for the full texts.
+
+Upstream Apache-2.0 notice:
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
 ================================================================================
 PRIMA (https://github.com/libprima/prima)
 ================================================================================

crates/basin/src/core.rs

@@ -69,6 +69,7 @@ pub mod numdiff;
 pub mod observer;
 #[doc(hidden)]
 pub mod parallel;
+pub mod parameter_transform;
 pub mod problem;
 pub mod rng;
 pub mod run_control;