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wt 71675b1cc0 S00-004: Record blocked task and remediation handoff

Changes: Preserve incomplete work and blocker metadata for S00-004. This checkpoint does not mark implementation accepted.
Validation: Session ended with status blocked.
Blocker: Agent timed out; process terminated before escalation

Task: S00-004
Agent: auto-crypto-8bf3dcf711b9
Role: crypto
Action: claim
Status: blocked

Task title: Проверить browser OMEMO backend

2026-10-15 15:32:48 +07:00

2.7 KiB

Raw Blame History

Handoff S00-004 - Browser OMEMO backend spike

Agent: auto-crypto-8bf3dcf711b9 Role: crypto Status on handoff: escalated (blocker)

Result

A focused spike established that an audited Signal session library can provide the session/ratchet engine and session-record persistence without a homegrown ratchet (known-answer sealed-sender roundtrip, 631-byte record, reload byte-for-byte). However the same spike established that a browser/worker/WASM deployment and the OMEMO2 wire-format layer are not available from any maintained package on the reachable registry:

@signalapp/libsignal-client@0.105.0 is a Node native addon with zero .wasm assets; it cannot run in the Web client endpoint.
No maintained omemo2-js/omemo-wasm/@signalapp/libsignal/OMEMO2 package exists on the registry.

Per focused-check rule ("unsupported format recorded blocker, not success") and the mandatory escalate protocol, the original task is blocked rather than claimed done.

Outputs produced (all inside accepted scope experiments/0003-crypto-library/**)

experiments/0003-crypto-library/package.json (exact @signalapp/libsignal-client@0.105.0, --ignore-scripts).
experiments/0003-crypto-library/session-probe/smoke.mjs (known-answer probe, mirrors Signal canonical stores).
experiments/0003-crypto-library/session-probe/wasm-unsupported.mjs (unsupported-format probe).
state/evidence/S00-004-auto-crypto-8bf3dcf711b9.md (this run's evidence).
ADR docs/decisions/0003-crypto-library.md was not written because the decision would record an unverified/blocked majority of the acceptance (browser WASM + legacy/OMEMO2) rather than a confirmed capability; the outcome must be that a remediation establishes the browser-capable backend first.

Evidence

Known-answer probe: PASS (exit 0), stored 631 bytes, byte-for-byte reload.
Unsupported-format probe: exit 2 (no .wasm, native addon only).

Next input for the remediation

Reproduce intent inside experiments/0003-crypto-library/**:

node session-probe/smoke.mjs (expect SMOKE_PASS).
node session-probe/wasm-unsupported.mjs (expect exit 2 / blocker line).
Establish a verified browser/worker/WASM-capable OMEMO2 backend (library with a real .wasm/web build and an OMEMO2 wire mapping), or record with traceable upstream primary sources why the browser endpoint must use a maintained encryption layer consistent with ENC-009/ENC-011 client-endpoint encryption.

Blocked handoff

Original: S00-004; reporter: auto-crypto-8bf3dcf711b9; resolution: S00-021.

Agent timed out; process terminated before escalation

Next: complete and review the remediation; only a fresh session may continue.

2.7 KiB Raw Blame History