docs(risk): align Policy A wiring and runtime evidence boundaries

[Pigbibi]

Summary

• Correct stale library-only wiring statements using current platform adapters.
• Document Policy A as prohibition of new risk, never automatic reoptimization.
• Explicitly preserve optional/missing drift semantics and separate code, historical deployment reports, configuration application, and real-cycle acceptance.

Validation

• Offline account gate and production-drift unit tests executed against this worktree source.
• Local links, policy-boundary assertions and git diff --check passed.
• Docs-only: no production code, dependency, risk value, account, provider, or runtime configuration changes.

Authorization

User explicitly authorized Wave 3 documentation PR publication and merge after required CI. No production env sync, market-data calls, or trading operations.