chore(release): duroxide 0.1.30

[pinodeca]

Summary

• bump duroxide from 0.1.29 to 0.1.30
• publish release notes for safer sub-orchestration IDs, collision handling, parent-link preservation across continue-as-new, and UUID generation
• add the missing changelog entry for PR Preserve sub-orchestration parent link across ContinueAsNew #31
• update the README latest-release link and summary
• apply formatter and current-toolchain Clippy cleanups required by the release gate
• make the heterogeneous session test account for at-least-once activity retries after transient ack failures

Validation

• cargo fmt --all --check
• cargo clippy --all-targets --all-features -- -D warnings
• cargo nt --no-fail-fast: 1,117 passed
• cargo nextest run --no-default-features --no-fail-fast: 1,114 passed
• cargo test --doc: 46 passed, 74 ignored
• test_multi_worker_heterogeneous_config: 10/10 repeated isolated passes
• cargo package -p duroxide --locked --allow-dirty: passed
• package/archive inspection: 263 clean entries
• cargo publish -p duroxide --dry-run --locked --allow-dirty: passed

Dependency audit

cargo audit reports RUSTSEC-2023-0071 for rsa 0.9.10, an unused lockfile entry pulled through sqlx-mysql. cargo tree --all-features --target all -e all --invert rsa and the equivalent sqlx-mysql query show no reachable dependency edge. The audit passes when only this unreachable advisory is scoped out; no other advisories are reported.