Prepare avm 0.2.7 release

[DracoRunner]

Summary

• prepare the v0.2.7 release under the @prajanova/avm package name
• add shell-mode alias execution, install pinning, timeout handling, and malformed config recovery
• update changelog entries for the release

Verification

• cargo fmt --check
• cargo test --workspace
• GITHUB_REF_NAME=v0.2.7 bash scripts/check-release-version.sh
• npm pack --dry-run --cache /private/tmp/avm-npm-cache
• docker/tests/run-docker-tests.sh