S00-003: Record blocked task and remediation handoff

Changes: Preserve incomplete work and blocker metadata for S00-003. This checkpoint does not mark implementation accepted.
Validation: Session ended with status blocked.
Blocker: Stanza 12.22.1 browser HMAC sha-512 fails RFC 4231 Test Case 1: wrong 64-byte block selection. SCRAM-SHA-512 derives that hyphenated algorithm; private algorithm mutation/vendor patches are unsupported. Parent cannot attest browser strongest-mechanism compatibility from Node-only success.

Task: S00-003
Agent: auto-protocol-dcdf92cd067e
Role: protocol
Action: claim
Status: blocked

Task title: Проверить XMPP WSS/auth библиотеку

state/tasks.json

@@ -1,6 +1,6 @@
 {
   "schema_version": 1,
-  "revision": 46,
+  "revision": 48,
   "tasks": {
     "S00-001": {
       "status": "done",
@@ -32,14 +32,16 @@
       "completed_at": "2026-10-14T19:06:23+00:00"
     },
     "S00-003": {
-      "status": "todo",
-      "owner": null,
-      "started_at": "2026-10-14T19:20:57+00:00",
-      "reason": null,
-      "updated_at": "2026-10-14T19:35:55+00:00",
-      "blocked_by": [],
+      "status": "blocked",
+      "owner": "auto-protocol-dcdf92cd067e",
+      "started_at": "2026-10-14T19:35:56+00:00",
+      "reason": "Stanza 12.22.1 browser HMAC sha-512 fails RFC 4231 Test Case 1: wrong 64-byte block selection. SCRAM-SHA-512 derives that hyphenated algorithm; private algorithm mutation/vendor patches are unsupported. Parent cannot attest browser strongest-mechanism compatibility from Node-only success.",
+      "updated_at": "2026-10-14T19:38:42+00:00",
+      "blocked_by": [
+        "S00-019"
+      ],
       "resume_status": "in_progress",
-      "blocker_report": "state/blockers/S00-018.md",
+      "blocker_report": "state/blockers/S00-019.md",
       "handoff": "state/handoffs/S00-003.md",
       "previous_owner": "auto-protocol-902594b44429",
       "resumed_after_blocker": true
@@ -1245,6 +1247,12 @@
       "reviewer": "auto-security-64dc2d9fa232",
       "review_evidence": "state/evidence/S00-018-review.md",
       "completed_at": "2026-10-14T19:35:55+00:00"
+    },
+    "S00-019": {
+      "status": "todo",
+      "owner": null,
+      "external_wait": false,
+      "reason": null
     }
   },
   "events": [
@@ -1847,6 +1855,29 @@
       "to": "done",
       "reason": null,
       "evidence": "state/evidence/S00-018-review.md"
+    },
+    {
+      "revision": 47,
+      "at": "2026-10-14T19:35:56+00:00",
+      "action": "claim",
+      "task": "S00-003",
+      "agent": "auto-protocol-dcdf92cd067e",
+      "role": "protocol",
+      "from": "todo",
+      "to": "in_progress",
+      "reason": null
+    },
+    {
+      "revision": 48,
+      "at": "2026-10-14T19:38:42+00:00",
+      "action": "escalate",
+      "task": "S00-003",
+      "resolution_task": "S00-019",
+      "agent": "auto-protocol-dcdf92cd067e",
+      "role": "protocol",
+      "from": "in_progress",
+      "to": "blocked",
+      "reason": "Stanza 12.22.1 browser HMAC sha-512 fails RFC 4231 Test Case 1: wrong 64-byte block selection. SCRAM-SHA-512 derives that hyphenated algorithm; private algorithm mutation/vendor patches are unsupported. Parent cannot attest browser strongest-mechanism compatibility from Node-only success."
     }
   ],
   "retired_agents": [
@@ -1857,6 +1888,7 @@
     "auto-qa-98b05bd56c25",
     "auto-ci-cd-5475930af078",
     "auto-protocol-826aa6bc12ef",
-    "auto-protocol-902594b44429"
+    "auto-protocol-902594b44429",
+    "auto-protocol-dcdf92cd067e"
   ]
 }