Harden Iris security boundaries

[karthiknagpuri]

Summary

• lock the browser bridge to loopback by default, add origin checks and timing-safe pairing-token authentication, require WSS for remote browser connections, and bound pending/authenticated connections, payloads, rates, and event memory
• validate protocol messages, safely serialize and redact browser data, hide sensitive form values, restrict navigation to HTTP(S), and block destructive controls unless explicitly confirmed
• make dangerous-action confirmation one-shot across recordings, replays, flows, healing, crawling, WebMCP, and native input; correct replay/heal runtime error classification
• repair CI package filters and E2E harness arguments, upgrade vulnerable build dependencies, and add high-severity dependency auditing

Verification

• pnpm test: all monorepo tasks passed (10 protocol, 394 server, 269 browser tests)
• pnpm build
• pnpm lint
• pnpm typecheck
• pnpm format:check
• pnpm audit --audit-level high: no known vulnerabilities
• browser E2E: 14/14 specs passed
• git diff --check

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[divshekhar]

Hi @karthiknagpuri ,
The branch has some conflicts can you resolve it? Will merge it after testing it.