fix: enforce edition-specific Search checks

[dajiaohuang]

Summary

• enforce source-specific Search contracts for 2014 and 2024
• derive Search proficiency and modifiers from the actor card
• validate the complete Search action boundary before rolling or persistence

Source

Bundled SRD 2014 Order of Combat: Search uses Wisdom (Perception) or Intelligence (Investigation). The 2024 rule remains edition-separated and uses Wisdom, optionally with the listed skills.

Validation

• 5 focused Search MCP regressions
• action payment, stale revision, idempotency replay, random no-consumption, and failure no-write coverage
• Ruff and CI

Closes #132