v0.1.1 - Protocol, Codex, and GPT integration guide

This release adds the Codex integration and clarifies Emotion Engine's protocol and GPT/API integration boundary.

Included:

• Codex user-level Skill package
• OpenAI GPT / API host-side integration guide
• emotion-engine-state/v2 protocol and schema docs
• Clearer trust v1 semantics: agent-to-user only
• trust_history as numeric ledger, with explanations kept in emotion_log
• GitHub Pages root redirect to the live demo

Verification:

• 42 tests passed