Release masterror 0.10.5 with derive re-export

[RAprogramm]

Summary

• publish masterror-derive 0.6.1 and re-export its macros from the masterror crate so users only depend on one package
• replace the release workflow with MSRV/tag validation and a gated publish sequence that retries masterror-derive before masterror
• bump workspace versions/documentation to 0.10.5 and update the changelog for the release

Testing

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

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https://chatgpt.com/codex/tasks/task_e_68ce9c702c4c832b938c67984be59f57