Papucs v0.7.0

Select a startup script per server type while keeping existing servers on the default runtime adapter.

• Add optional server build.runtime_script paths relative to the Papucs project root.
• Add %runtime_script% in Dockerfile templates for the selected script's build-context filename.
• Validate custom script paths and files in config validate, doctor, and image builds without imposing the default adapter's Perl contract.

Both papucs and create-papucs are released as 0.7.0. Omitting build.runtime_script keeps the existing scripts/papucs-runtime-replace.sh behavior.

Validation: 253 passing tests, formatting/lint/type checks, package builds, content/license audits, package checks, and release-version validation. The npm audit has no high or critical findings; two moderate development-tooling findings remain.

Full changelog: v0.6.0...v0.7.0