release: character-wizard 0.7.0

[volnuttz]

Summary

Describe the change and its user-visible effect.

Scope checklist

• This change stays within the current level-1 SRD scope, or explains the
  intentional scope expansion.
• JSON remains the canonical character record and the PDF remains a rendered
  view.
• Source PDFs and official template fixtures are unchanged.
• Dependencies are justified when the standard library and current tools are
  insufficient.

Verification

• cargo +1.88.0 fmt --check
• cargo +1.88.0 clippy --workspace --all-targets -- -D warnings
• cargo +1.88.0 test --workspace --locked
• cargo +1.88.0 audit and cargo +1.88.0 deny check
• Relevant CLI, PDF read-back, binary, packaging, or workflow checks run.

Documentation

• Tests cover changed behavior.
• docs/roadmap.md is updated when roadmap scope or status changes.
• CHANGELOG.md includes user-visible changes, if applicable.

Notes for reviewers

Call out compatibility concerns, known limitations, or follow-up work.