Skill: modernize-move

Detect and modernize outdated Move V1 syntax, patterns, and APIs to Move V2+. Preserves correctness through tiered transformations with test verification after each tier.

Essential Principles

Five non-negotiable rules for every modernization:

Test safety net is mandatory WHY: Modernization must preserve behavior. No tests = no safety net. If no tests exist, invoke generate-tests skill first to create comprehensive tests before making any changes.
Analyze before modifying WHY: The user must see exactly what will change and confirm the scope. Never surprise-edit code. Present the full analysis report and wait for confirmation.
Tiered execution order WHY: Syntax changes (Tier 1) are zero-risk. API migrations (Tier 3) change semantics. Always apply safest changes first so riskier changes build on a clean, verified foundation.