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: Required automation suite fails in existing all-prompts budget test: S21-006 exceeds even a diagnostic 90000-character prompt limit. This blocks verification of the stdin remediation; production limit remains 80000.

Task: S00-012
Agent: manual-ci-cd-stdin-20261015b
Role: ci-cd
Action: escalate
Status: blocked

Task title: Fix runner prompt delivery after partial stdin timeout

state/tasks.json

@@ -1,6 +1,6 @@
 {
   "schema_version": 1,
-  "revision": 11,
+  "revision": 14,
   "tasks": {
     "S00-001": {
       "status": "done",
@@ -15,14 +15,16 @@
       "completed_at": "2026-10-14T18:03:56+00:00"
     },
     "S00-002": {
-      "status": "review",
+      "status": "blocked",
       "owner": "auto-orchestrator-68a05c587e33",
       "started_at": "2026-10-14T18:11:33+00:00",
-      "reason": null,
-      "updated_at": "2026-10-14T18:18:53+00:00",
-      "blocked_by": [],
-      "resume_status": "in_progress",
-      "blocker_report": "state/blockers/S00-011.md",
+      "reason": "Reviewer startup hangs waiting for stdin EOF: runner retries communicate(None) after a .2s partial-write timeout. Reproduced with delayed stdin reader and 80000-byte payload on Python 3.9.6; no S00-002 acceptance review was performed.",
+      "updated_at": "2026-10-14T18:24:59+00:00",
+      "blocked_by": [
+        "S00-012"
+      ],
+      "resume_status": "review",
+      "blocker_report": "state/blockers/S00-012.md",
       "handoff": "state/handoffs/S00-002.md",
       "previous_owner": "auto-orchestrator-3a4f07103316",
       "resumed_after_blocker": true,
@@ -1132,6 +1134,26 @@
       "reviewer": "auto-security-1e9200de1765",
       "review_evidence": "state/evidence/S00-011-review.md",
       "completed_at": "2026-10-14T18:11:33+00:00"
+    },
+    "S00-012": {
+      "status": "blocked",
+      "owner": "manual-ci-cd-stdin-20261015b",
+      "external_wait": false,
+      "reason": "Required automation suite fails in existing all-prompts budget test: S21-006 exceeds even a diagnostic 90000-character prompt limit. This blocks verification of the stdin remediation; production limit remains 80000.",
+      "started_at": "2026-10-14T18:33:49+00:00",
+      "updated_at": "2026-10-14T18:35:56+00:00",
+      "blocked_by": [
+        "S00-013"
+      ],
+      "resume_status": "in_progress",
+      "blocker_report": "state/blockers/S00-013.md",
+      "handoff": "state/handoffs/S00-012.md"
+    },
+    "S00-013": {
+      "status": "todo",
+      "owner": null,
+      "external_wait": false,
+      "reason": null
     }
   },
   "events": [
@@ -1267,9 +1289,46 @@
       "to": "review",
       "reason": null,
       "evidence": "state/evidence/S00-002-auto-orchestrator-68a05c587e33.md"
+    },
+    {
+      "revision": 12,
+      "at": "2026-10-14T18:24:59+00:00",
+      "action": "escalate",
+      "task": "S00-002",
+      "resolution_task": "S00-012",
+      "agent": "manual-security-stdin-20261015a",
+      "role": "security",
+      "from": "review",
+      "to": "blocked",
+      "reason": "Reviewer startup hangs waiting for stdin EOF: runner retries communicate(None) after a .2s partial-write timeout. Reproduced with delayed stdin reader and 80000-byte payload on Python 3.9.6; no S00-002 acceptance review was performed."
+    },
+    {
+      "revision": 13,
+      "at": "2026-10-14T18:33:49+00:00",
+      "action": "claim",
+      "task": "S00-012",
+      "agent": "manual-ci-cd-stdin-20261015b",
+      "role": "ci-cd",
+      "from": "todo",
+      "to": "in_progress",
+      "reason": null
+    },
+    {
+      "revision": 14,
+      "at": "2026-10-14T18:35:56+00:00",
+      "action": "escalate",
+      "task": "S00-012",
+      "resolution_task": "S00-013",
+      "agent": "manual-ci-cd-stdin-20261015b",
+      "role": "ci-cd",
+      "from": "in_progress",
+      "to": "blocked",
+      "reason": "Required automation suite fails in existing all-prompts budget test: S21-006 exceeds even a diagnostic 90000-character prompt limit. This blocks verification of the stdin remediation; production limit remains 80000."
     }
   ],
   "retired_agents": [
-    "auto-orchestrator-3a4f07103316"
+    "auto-orchestrator-3a4f07103316",
+    "manual-security-stdin-20261015a",
+    "manual-ci-cd-stdin-20261015b"
   ]
 }