Track CLI OAuth users in PostHog

[zahlekhan]

Summary

• alias the CLI anonymous PostHog distinct id to canonical OIDC userinfo.sub after OAuth API-key minting succeeds
• pass CI and terminal interactivity context with CLI analytics (ci, stdin/stdout TTY flags, is_interactive_terminal)
• keep aliasing best-effort via the PostHog SDK and only log PostHog failures when OPENUI_TELEMETRY_DEBUG=1
• tighten CLI telemetry copy to describe OAuth account-id linking without email/name/API-key collection
• bump @openuidev/cli from 0.1.2 to 0.1.3

Verification

• pnpm exec prettier --check packages/openui-cli/src/lib/telemetry.ts packages/openui-cli/src/auth/mint.ts packages/openui-cli/README.md
• pnpm --filter @openuidev/cli run build:cli
• pnpm --filter @openuidev/cli run lint:check
• pnpm install --lockfile-only --filter @openuidev/cli...