S00-012: Record blocked task and remediation handoff

Changes: Preserve incomplete work and blocker metadata for S00-012. This checkpoint does not mark implementation accepted.
Validation: Session ended with status blocked.
Blocker: Agent exited with code 1

Task: S00-012
Agent: auto-qa-98b05bd56c25
Role: qa
Action: review
Status: blocked

Task title: Fix runner prompt delivery after partial stdin timeout

state/blockers/S00-015.md

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+# Blocker S00-015
+
+- Original task: S00-012
+- Root task: S00-002
+- Reporter: auto-qa-98b05bd56c25
+- Role: qa
+- Original owner: auto-ci-cd-f101e40d9902
+- Waits for user/external condition: False
+
+## Cause
+
+Agent exited with code 1
+
+## 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 S00-015.