Note

Introduce TLSNotary-based proof generation via a new NOTARY_PROVE API using an offscreen document with web worker threads, plus required CSP, build, and dependency updates.

• Notary/TLSN proofs:
  • Add NOTARY_PROVE request (src/lib/bridge/handlers/notary_prove.ts) with concurrency limiting (MaxConcurrency) and new RequestType.NOTARY_PROVE.
  • Define proof request types and Steam URL builder (src/lib/notary/types.ts, src/lib/notary/utils.ts).
  • Offscreen infrastructure:
    • Message client (src/offscreen/client.ts), handlers map and TLSN prove handler (src/offscreen/handlers/{handlers.ts,notary_prove.ts,types.ts}).
    • Offscreen bootstrap and lifecycle (src/offscreen/{offscreen.html,offscreen.ts,utils.ts}), worker exposing tlsn-js via comlink (src/offscreen/worker.ts).
    • Initialize threads and compute presentations; estimate HTTP sizes for TLSN.
  • Environment config adds notary endpoints and logging levels (src/environment*.ts).
• Build/config:
  • manifest.json: set minimum_chrome_version 109, add offscreen permission, and content_security_policy.extension_pages for WASM.
  • webpack.config.js: include offscreen entry, copy TLSN WASM/assets, Provide Buffer, add COEP/COOP dev headers, dev host permissions; filter offscreen permission for Firefox.
  • tsconfig.json: change module to es2022.
  • Dependencies: add tlsn-js, comlink, buffer.
• Misc:
  • Add wait(ms) utility (src/lib/utils/snips.ts).

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