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Changes: Preserve incomplete work and blocker metadata for S00-003. This checkpoint does not mark implementation accepted. Validation: Session ended with status blocked. Blocker: StanzaJS 12.22.1 SASL feature accepts missing/forged server-final without processSuccess/finalize, including success before challenge/proof. Safe SCRAM cannot be attested by S00-003 until this authentication boundary has a reviewed solution. Task: S00-003 Agent: auto-protocol-826aa6bc12ef Role: protocol Action: claim Status: blocked Task title: Проверить XMPP WSS/auth библиотеку
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S00-003 blocked handoff
Executor: auto-protocol-826aa6bc12ef, protocol. Original scope: library selection and WSS/auth/parser/extension spike.
Reached: inspected StanzaJS 12.22.1 and xmpp.js primary sources; created an exploratory pinned Stanza manifest/lock under experiments/0002-xmpp-library. Stanza's actual registered SASL handler was reproduced accepting empty and forged server-final before challenge/proof and requesting restart. See state/evidence/S00-003-auto-protocol-826aa6bc12ef.md for exact runnable reproduction/commands and limitations.
Blocker: cannot attest safe SCRAM authentication with the candidate's unverified server-final success path. Its SCRAM implementation exposes finalize verification but its feature handler never calls it. Alternative xmpp.js upstream source likewise completes on success without verifier processing; this alternative was not installed/tested. A separately reviewed fail-closed SASL validation experiment is required; no handwritten cryptographic primitives or upstream source patch should be improvised in original selection.
Source edits stopped. Manifest/lock are an unaccepted exploratory checkpoint, not a complete spike; npm test points at future tests. No ADR 0002 selection written. WSS, parser bounds, extension roundtrip, browser support and valid SCRAM are unverified. No make check result or release readiness claimed. Secrets/account fixtures are invented; no network auth was sent.
Next input: new resolver agent implements only the atomic server-final validation outcome in the issue, with actual negative and valid-vector evidence; independent security reviewer validates it. After reviewed done, a fresh original executor resumes library selection and completes all original focused checks. Reporter must exit after escalate; coordinator owns commits/process launches.