feat: release Development Kit v0.11.0 with Secrets & Configuration Readiness Gate

[eybersjp]

Summary

Implements DKF v0.11.0 — Secrets & Configuration Readiness Gate.

• Adds deterministic Secrets & Configuration Readiness Gate in
  untime/orchestration/configuration-readiness.mjs\
• Integrates gate with Development Contracts (v1.1.0 schema), Plan Validator, Acceptance Engine, Evidence Store, and Autopilot Result Gate
• Zero-credential exposure invariant: credentials are never stored in registry files, gate state, setup guides, or AI role contexts
• Git tracking protection refuses credential entry into files tracked by Git
• Control Center view and Runtime API endpoints for Configuration Readiness
• Passes 100% of unit, integration, security, and full release validation test suites