Fix: omit proxyUrl when no proxy configured (prevents URL parse panic)

Switch to pre-built kiro-rs Docker image (ghcr.io/hank9999/kiro-rs:beta-7d4d74)

fix: Use Rust 1.86 for edition2024

Switch to kiro-rs (Rust) - build from source

feat: Add 2 ChatGPT Mail Kiro accounts (private domains)

feat: Add personal Kiro account for testing

feat: Replace with fresh account, disable health check to avoid ban trigger

fix: Token refresh bugs - null refreshToken, missing expiresIn fallback, isExpiryDateNear error handling

feat: Add 3 fresh Kiro accounts

fix: Simplify Dockerfile, skip TLS sidecar, explicit port 7860

feat: Deploy aiclient-2-api to HuggingFace Space