Summary

• document Rust error-handling fundamentals, masterror usage, crate comparisons, and troubleshooting recipes in a new docs/wiki
• surface the wiki from the README template and regenerate the published README
• bump the crate version to 0.11.1 and record the documentation work in the changelog

Testing

• cargo +nightly fmt --
• cargo +1.90.0 build --all-targets
• cargo +1.90.0 test --all
• cargo +1.90.0 clippy -- -D warnings
• cargo +1.90.0 doc --no-deps
• cargo audit
• cargo deny check

https://chatgpt.com/codex/tasks/task_e_68cf5b8f9628832bab1f823eced42a5b