fix: keep document updates within the active workflow

[shinpr]

Summary

• Keep in-flow requirement changes in the orchestrator-owned convergence record instead of forcing a requirement-analyzer rerun.
• Resume from the earliest invalidated gate while preserving outputs that remain valid.
• Restart document design only when the requirement change invalidates an approved requirement, contract, data flow, verification strategy, or task boundary.
• Bump the bundled plugin version to 0.24.9.

Why

Document updates already have an authorized target and requested outcome. Forcing them through fresh requirement analysis introduces unrelated scope and cost evaluation before applying the requested change.

Verification

• pnpm sync:check
• pnpm check:skills-index
• git diff --check
• claude plugin validate .claude-plugin/marketplace.json
• claude plugin validate dev-workflows
• claude plugin validate dev-workflows-frontend
• claude plugin validate dev-workflows-fullstack
• claude plugin validate dev-skills