docs: define storage recovery and Komodo roadmap

[Serph91P]

Summary

• define safe local directory deletion, directory sizes, storage selection, and durable operation progress
• define a password-protected DockerVault recovery bundle and first-run restore flow
• define capability-negotiated Komodo stack lifecycle orchestration
• provide an 18-task TDD implementation plan split across four serial PRs

Scope

Documentation and implementation planning only. No runtime behavior changes.

Validation

• git diff --check
• no placeholders in the design or plan
• balanced Markdown code fences
• no U+2013 or U+2014 characters in changed files

All implementation pull requests will target develop and receive independent review.