v1.1.1: SOCA Gate + Evidence Bundle

[arnaudassoumani-collab]

Parent epic: #14

Scope

• Add deterministic release gate script for v1.1.1
• Generate RSI, ZHV, ZHDEEV, TRUST metrics and evidence bundle
• Capture provider matrix logs, bridge probes, diff summary, hashes, and UI screenshot

Acceptance

• Gate emits reports/v1.1.1/soca-gate.md and soca-gate.json
• RSI, ZHV, ZHDEEV, TRUST all reach 100 before release
• Evidence artifacts are reproducible