This pull request introduces several improvements and refactorings to the configuration and trait implementations for optimization algorithms in the codebase. The main changes include the addition of new builder methods for setting multiple parameters at once, enhanced parameter validation, expanded unit testing for configuration methods, and trait updates to improve thread safety and composability.

Configuration builder and validation improvements

• Added new methods to set multiple related parameters simultaneously for NelderMeadConfig (with_alpha_beta), HagerZhangLineSearch (with_delta_sigma), and MoreThuenteLineSearch (with_c1_c2), with strict validation and documentation for panics on invalid input. [1] [2] [3]
• Changed several builder methods in Swarm to consume and return Self instead of using mutable references, improving ergonomics and composability for swarm configuration.

Expanded unit test coverage

• Added comprehensive tests for all new and existing configuration builder methods in BacktrackingLineSearch, HagerZhangLineSearch, and MoreThuenteLineSearch, including checks for correct value assignment and expected panics on invalid input. [1] [2] [3] [4]

Trait enhancements for thread safety

• Updated core traits (AbortSignal, Algorithm, BoundLike, LineSearch, and Transform) to require Send and Sync, ensuring that algorithm components are safe for concurrent and multi-threaded execution. [1] [2] [3] [4] [5]

Documentation and minor algorithmic clarifications

• Improved documentation for simplex initialization in Nelder-Mead and clarified comments for parameter validation logic in line search algorithms. [1] [2] [3]

Minor refactoring

• Simplified Bound conversion logic for (Option<Float>, Option<Float>), removing unnecessary ordering and directly mapping to bound variants.
• Minor wording and comment changes for clarity in SwarmStatus and other modules.

Let me know if you'd like a deeper dive into any of these changes or want to discuss how the new builder methods and trait bounds affect usage patterns!This pull request introduces new convenience methods to set multiple related parameters at once in several optimization algorithm configuration structs, clarifies documentation and panic conditions, and improves thread safety and API consistency across traits and structs. The most significant changes are grouped below.

New convenience methods for configuration

• Added with_alpha_beta to NelderMeadConfig to set both the reflection and expansion coefficients simultaneously, with appropriate assertions.
• Added with_delta_sigma to HagerZhangLineSearch to set both Armijo and Wolfe condition parameters at once, with validation.
• Added with_c1_c2 to MoreThuenteLineSearch to set both control parameters for Armijo and Wolfe conditions simultaneously, with validation.

API consistency and ergonomics

• Updated several methods in Swarm to take and return Self by value instead of mutable references, improving method chaining and consistency.

Thread safety improvements

• Added Send + Sync bounds to core traits such as AbortSignal, Algorithm, BoundLike, LineSearch, and Transform, ensuring these types can be safely shared across threads. [1] [2] [3] [4] [5]

Documentation and validation clarity

• Improved documentation and panic condition descriptions for parameter-setting methods in HagerZhangLineSearch and MoreThuenteLineSearch to accurately reflect the mathematical requirements. [1] [2]
• Clarified simplex initialization in the Nelder-Mead algorithm documentation.

Minor improvements

• Simplified SwarmStatus field documentation for clarity.
• Refactored From<(Option<Float>, Option<Float>)> for Bound for clarity and correctness in bound construction.