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
1 parent 3784fa7b99
commit 71675b1cc0
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+# Blocker S00-021
+
+- Original task: S00-004
+- Root task: S00-004
+- Reporter: auto-crypto-8bf3dcf711b9
+- Role: crypto
+- Original owner: auto-crypto-8bf3dcf711b9
+- Waits for user/external condition: False
+
+## Cause
+
+Agent timed out; process terminated before escalation
+
+## One remediation outcome
+
+Устранить одну указанную причину прерывания и доказать готовность исходной задачи к новому запуску; не выполнять соседние задачи.
+
+## Evidence / reproduction
+
+See original handoff and task evidence.
+
+The reporting agent must stop now. A new agent implements only S00-021.
@@ -0,0 +1,105 @@
+# S00-004 - Browser OMEMO backend spike - Evidence
+
+- Agent: `auto-crypto-8bf3dcf711b9`
+- Role: crypto
+- Task: S00-004 "Проверить browser OMEMO backend"
+- Date-of-run: 2026-10-15
+
+## 1. Known-answer session/ratchet + persistence probe (PASS)
+
+Command and result:
+
+```
+cd experiments/0003-crypto-library
+node session-probe/smoke.mjs
+```
+
+Actual output (native libsignal trace + KAS lines):
+
+```
+[log:3] Building PreKeyWhisperMessage for: 796abedb-...-4214?.3 with preKeyId: 31337 (session created at 1792052846)
+[log:3] decrypted PreKey message from <ACI:9d0652a3-...>.1 with current session state ...
+KAS_OK known plaintext: known vector: OMEMO session smoke
+KAS_OK established via sealed-sender PreKey session
+KAS_OK bob stored session bytes: 631
+SMOKE_PASS
+exit code: 0
+```
+
+What is shown: using the canonical real library API
+(`sealedSenderEncryptMessage`/`sealedSenderDecryptMessage`) an independent
+A/B pair established a PreKey session; the exact known plaintext string
+(`known vector: OMEMO session smoke`) round-tripped; the decrypted-stored
+session record serialized to 631 non-empty bytes and reloaded byte-for-byte
+via `SessionRecord.deserialize`.
+
+Verified capability: session/ratchet establishment and session-record
+persistence on a real, unmodified, audited Signal session library. **No
+homegrown ratchet.**
+
+## 2. Unsupported format/backend probe (BLOCKER, exit 2)
+
+Command and result:
+
+```
+cd experiments/0003-crypto-library
+node session-probe/wasm-unsupported.mjs
+```
+
+Actual output:
+
+```
+pkgPresent: true
+wasmFiles: 0
+prebuilds: darwin-arm64, darwin-x64, linux-arm64, linux-x64, win32-arm64, win32-x64
+UNSUPPORTED_BLOCKER: no .wasm asset ships in @signalapp/libsignal-client; the
+distribution is a Node native addon (prebuilds/*/*.node). A browser worker/WASM
+deployment is NOT established by this npm package ...
+exit code: 2
+```
+
+What is shown: the only maintained, installable, audited session library in
+this registry (`@signalapp/libsignal-client@0.105.0`, AGPL-3.0-only) ships as a
+Node native addon and contains no WebAssembly asset. It therefore cannot execute
+in a browser worker as required by the Web client-endpoint.
+
+## 3. OMEMO2 wire-format candidate search (no maintained package)
+
+Registry queries (via proxy, real responses):
+
+| package | result |
+| --- | --- |
+| `omemo2-js` | 404 Not Found |
+| `@oxjs/omemo` | 404 Not Found |
+| `omemo-wasm` | 404 Not Found |
+| `@signalapp/libsignal` | 404 Not Found |
+| `@signalapp/libsignal-client@0.105.0` | exists (AGPL-3.0-only, native addon) |
+| `signal-protocol@0.1.3` | exists (GPL-3.0, 2017-era, unmaintained; not a viable maintained OMEMO2 candidate) |
+
+No maintained browser/WASM-capable OMEMO or OMEMO2 wire-format package is
+available on the reachable registry. `@signalapp/libsignal-client` provides the
+session/ratchet engine but does not provide the OMEMO/OMEMO2 XMPP wire mapping
+(ENC-009/ENC-011 SCE payload/key/MAC stanzas).
+
+## 4. Honest conclusion (blocker, not success)
+
+Feasible and verified:
+- Audited session/ratchet engine + secure session-record persistence (real API,
+  known-answer roundtrip, no homegrown ratchet).
+
+NOT established and therefore a blocker (per focused-check rule "unsupported
+format recorded blocker, not success"):
+- Browser/worker/WASM deployment: distribution is a Node native addon, zero
+  `.wasm` assets; cannot run in the Web client endpoint.
+- OMEMO/OMEMO2 wire-format layer: no maintained browser-capable OMEMO2 package
+  on the registry; raw `signalDecryptPreKey` re-initiation nuance observed during
+  development was not treated as the acceptance path.
+
+Task acceptance-1 requires legacy/OMEMO2 AND worker/wasm AND persistence. Two of
+the three are not established -> escalate a focused remediation that provides or
+records a verified browser/WASM-capable OMEMO backend and the OMEMO2 wire layer.
+
+## Reproduction for reviewer
+- `node experiments/0003-crypto-library/session-probe/smoke.mjs` -> SMOKE_PASS (0)
+- `node experiments/0003-crypto-library/session-probe/wasm-unsupported.mjs` -> exit 2
+- `npm view omemo2-js version` -> 404 (proxy-connected registry)
@@ -0,0 +1,54 @@
+# 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/**`:
+1. `node session-probe/smoke.mjs` (expect SMOKE_PASS).
+2. `node session-probe/wasm-unsupported.mjs` (expect exit 2 / blocker line).
+3. 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.
@@ -0,0 +1,30 @@
+{
+  "title": "Establish a verified browser-capable OMEMO2 backend for the Web client endpoint",
+  "reason": "S00-004 cannot establish the browser/worker/WASM and legacy/OMEMO2 wire-format capabilities its acceptance requires. The only maintained, audited session library on the reachable registry (@signalapp/libsignal-client@0.105.0, AGPL-3.0-only) is a Node native addon with zero .wasm assets, so it cannot run in the Web client endpoint; no maintained OMEMO2/omemo-wasm/@signalapp/libsignal package exists on the registry.",
+  "reproduction": "cd experiments/0003-crypto-library && node session-probe/smoke.mjs (SMOKE_PASS, 0) shows session/ratchet+persistence work; node session-probe/wasm-unsupported.mjs (exit 2) shows wasmFiles:0, prebuilds are native *.node only; npm view omemo2-js => 404. Details: state/evidence/S00-004-auto-crypto-8bf3dcf711b9.md",
+  "role": "crypto",
+  "reviewer_role": "security",
+  "scope": [
+    "experiments/0003-crypto-library/**",
+    "docs/decisions/0003-crypto-library.md"
+  ],
+  "outcome": "One independently reviewed probe and ADR establish a real browser/worker/WASM-capable OMEMO2 backend (library with a genuine web/WASM build and an OMEMO2 wire mapping, or traceable upstream primary-source proof covering encodings ENC-009/ENC-011), while retaining the verified audited session/ratchet engine and persistence from the existing spike.",
+  "steps": [
+    "Read S00-004 blocker evidence and accepted ENC-003/ENC-009/ENC-011 requirements and ADRs 0000-0002.",
+    "Identify a maintained browser/worker/WASM-capable OMEMO/OMEMO2 encryption library with a real .wasm or web build and an OMEMO2 wire-format mapping; verify its license, primary-source docs, and web build.",
+    "Run a focused known-answer OMEMO2 probe in the browser-compatible target inside experiments/0003-crypto-library/**; record actual results and any unsupported format as a blocker, not success.",
+    "Write/update docs/decisions/0003-crypto-library.md (proposed) recording the real capability and limitations; submit evidence and handoff for independent security review."
+  ],
+  "acceptance": [
+    "A browser/worker/WASM-capable OMEMO2 backend executes a known-answer encryption/decryption roundtrip with an authentic web build recorded in evidence.",
+    "The OMEMO2 wire-format mapping is established from real primary sources and does not bypass ENC-009/ENC-011 client-endpoint encryption.",
+    "No homegrown ratchet, stack/spec change without ADR, secrets in evidence, or out-of-scope edits."
+  ],
+  "checks": [
+    "Known-answer OMEMO2 roundtrip in the web/WASM target.",
+    "Web/WASM asset presence verified (non-zero real footprint), license and support checked.",
+    "Independent security review confirms no bypass and no unsupported format counted as success."
+  ],
+  "depends_on": [],
+  "requires_user_input": false
+}
@@ -1,6 +1,6 @@
 {
  "schema_version": 1,
-  "revision": 55,
+  "revision": 57,
  "tasks": {
    "S00-001": {
      "status": "done",
@@ -47,8 +47,17 @@
      "resumed_after_blocker": true
    },
    "S00-004": {
-      "status": "todo",
-      "owner": null
+      "status": "blocked",
+      "owner": "auto-crypto-8bf3dcf711b9",
+      "started_at": "2026-10-15T08:02:39+00:00",
+      "reason": "Agent timed out; process terminated before escalation",
+      "updated_at": "2026-10-15T08:32:40+00:00",
+      "blocked_by": [
+        "S00-021"
+      ],
+      "resume_status": "in_progress",
+      "blocker_report": "state/blockers/S00-021.md",
+      "handoff": "state/handoffs/S00-004.md"
    },
    "S00-005": {
      "status": "todo",
@@ -1268,6 +1277,12 @@
      "reason": null,
      "started_at": "2026-10-15T07:27:20+00:00",
      "updated_at": "2026-10-15T07:27:20+00:00"
+    },
+    "S00-021": {
+      "status": "todo",
+      "owner": null,
+      "external_wait": false,
+      "reason": null
    }
  },
  "events": [
@@ -1979,6 +1994,29 @@
      "from": "todo",
      "to": "in_progress",
      "reason": null
+    },
+    {
+      "revision": 56,
+      "at": "2026-10-15T08:02:39+00:00",
+      "action": "claim",
+      "task": "S00-004",
+      "agent": "auto-crypto-8bf3dcf711b9",
+      "role": "crypto",
+      "from": "todo",
+      "to": "in_progress",
+      "reason": null
+    },
+    {
+      "revision": 57,
+      "at": "2026-10-15T08:32:40+00:00",
+      "action": "escalate",
+      "task": "S00-004",
+      "resolution_task": "S00-021",
+      "agent": "auto-crypto-8bf3dcf711b9",
+      "role": "crypto",
+      "from": "in_progress",
+      "to": "blocked",
+      "reason": "Agent timed out; process terminated before escalation"
    }
  ],
  "retired_agents": [
@@ -1991,6 +2029,7 @@
    "auto-protocol-826aa6bc12ef",
    "auto-protocol-902594b44429",
    "auto-protocol-dcdf92cd067e",
-    "auto-protocol-59f4d359b339"
+    "auto-protocol-59f4d359b339",
+    "auto-crypto-8bf3dcf711b9"
  ]
 }