S00-028: Record blocked task and remediation handoff

Changes: Preserve incomplete work and blocker metadata for S00-028. This checkpoint does not mark implementation accepted.
Validation: Session ended with status blocked.
Blocker: S00-028 cannot independently validate project filesystem sandbox: installed Codex sandbox exits before command execution because the app-server socket directory must be user-owned with mode 0700. Host socket repair is outside launcher arguments scope.
Automatic blocker limit reached; explicit external resolution required.

Task: S00-028
Agent: auto-ci-cd-211cf3a2bd08
Role: ci-cd
Action: claim
Status: blocked

Task title: Repair conflicting Codex harness sandbox arguments

planning/TASK_MATRIX.md

@@ -1,6 +1,6 @@
 # Матрица задач
 
-Generated; state revision **91**. Canonical status: state/tasks.json.
+Generated; state revision **93**. Canonical status: state/tasks.json.
 
 | ID | Этап | Оператор | Reviewer | Статус | Owner | Зависимости | Задача |
 | --- | --- | --- | --- | --- | --- | --- | --- |
@@ -30,8 +30,9 @@ Generated; state revision **91**. Canonical status: state/tasks.json.
 | [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 |
+| [S00-028](tasks/S00-028.md) | S00 | ci-cd | qa | blocked | auto-ci-cd-211cf3a2bd08 | S00-002, S00-030 | 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 |
+| [S00-030](tasks/S00-030.md) | S00 | ci-cd | qa | blocked |  | S00-002 | Provide a valid Codex sandbox app-server socket directory |
 | [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 |