S00-022: Record blocked task and remediation handoff

Changes: Preserve incomplete work and blocker metadata for S00-022. This checkpoint does not mark implementation accepted.
Validation: Session ended with status blocked.
Blocker: Pinned libomemo.js@3.0.0 supplies real embedded WASM but is a different unaudited ratchet and excludes consumer SCE; no approved decision reconciles it with S00-022 retained audited engine/persistence requirement.

Task: S00-022
Agent: auto-crypto-bcd7f2a71667
Role: crypto
Action: claim
Status: blocked

Task title: Confirm or source a verified browser/WASM-capable OMEMO2 backend for the Web client endpoint

planning/TASK_MATRIX.md

@@ -1,6 +1,6 @@
 # Матрица задач
 
-Generated; state revision **89**. Canonical status: state/tasks.json.
+Generated; state revision **91**. Canonical status: state/tasks.json.
 
 | ID | Этап | Оператор | Reviewer | Статус | Owner | Зависимости | Задача |
 | --- | --- | --- | --- | --- | --- | --- | --- |
@@ -24,13 +24,14 @@ Generated; state revision **89**. Canonical status: state/tasks.json.
 | [S00-019](tasks/S00-019.md) | S00 | crypto | security | done | auto-crypto-c68801170fa4 | S00-001, S00-002, S00-017, S00-018 | Validate browser-compatible SCRAM-SHA-512 through a public mechanism API |
 | [S00-020](tasks/S00-020.md) | S00 | ci-cd | qa | done | auto-ci-cd-2a0186c54ce9 | S00-001, S00-002, S00-017, S00-018, S00-019, S00-024 | Restore access to the pinned Linux XMPP experiment toolchain |
 | [S00-021](tasks/S00-021.md) | S00 | crypto | security | done | auto-crypto-fcef9b6781bf | S00-001, S00-002 | Устранить прерывание: Проверить browser OMEMO backend |
-| [S00-022](tasks/S00-022.md) | S00 | crypto | security | todo |  | S00-001, S00-002, S00-021, S00-027 | Confirm or source a verified browser/WASM-capable OMEMO2 backend for the Web client endpoint |
+| [S00-022](tasks/S00-022.md) | S00 | crypto | security | blocked | auto-crypto-bcd7f2a71667 | S00-001, S00-002, S00-021, S00-027, S00-029 | Confirm or source a verified browser/WASM-capable OMEMO2 backend for the Web client endpoint |
 | [S00-023](tasks/S00-023.md) | S00 | storage | qa | blocked | auto-storage-87486895c792 | S00-002, S00-025 | Устранить прерывание: Выбрать IndexedDB wrapper и migration policy |
 | [S00-024](tasks/S00-024.md) | S00 | ci-cd | qa | done | auto-ci-cd-49907d48a6d1 | S00-001, S00-002, S00-017, S00-018, S00-019, S00-026 | Устранить прерывание: Restore access to the pinned Linux XMPP experiment toolchain |
 | [S00-025](tasks/S00-025.md) | S00 | storage | qa | blocked | auto-storage-ae5930b6fbdf | S00-002, S00-028 | Устранить прерывание: Устранить прерывание: Выбрать IndexedDB wrapper и migration policy |
 | [S00-026](tasks/S00-026.md) | S00 | ci-cd | qa | done | auto-ci-cd-4255c34da227 | S00-001, S00-002, S00-017, S00-018, S00-019 | Provide approved access to the pinned Linux experiment artifacts |
 | [S00-027](tasks/S00-027.md) | S00 | ci-cd | security | done | auto-ci-cd-40ae46e8efe7 | S00-001, S00-002, S00-021 | Restore approved npm registry connectivity for the OMEMO2 backend investigation |
 | [S00-028](tasks/S00-028.md) | S00 | ci-cd | qa | todo |  | S00-002 | Repair conflicting Codex harness sandbox arguments |
+| [S00-029](tasks/S00-029.md) | S00 | orchestrator | security | blocked |  | S00-001, S00-002, S00-021, S00-027 | Record an approved browser OMEMO backend sourcing strategy |
 | [S00-010](tasks/S00-010.md) | S00 | qa | orchestrator | todo |  | S00-001, S00-002, S00-003, S00-004, S00-005, S00-006, S00-007, S00-008, S00-009 | Gate: Профиль и проверка стека |
 | [S01-001](tasks/S01-001.md) | S01 | orchestrator | security | todo |  | S00-010 | Описать identity/model contracts |
 | [S01-002](tasks/S01-002.md) | S01 | orchestrator | security | todo |  | S00-010, S01-001 | Описать async account context |