S00-003: Evaluate Stanza with verified SCRAM and bounded WSS ingress

Changes: Propose the pinned XMPP library decision and add an isolated browser-built selection spike combining reviewed public SASL, SHA-512 and parser seams. Exercise TLS/xmpp handshake, strongest compatible non-PLUS authentication, rejected unsafe paths and extension mappings; document duplicate-body export projection and remaining limits. Preserve dependency notices, evidence and QA handoff.
Validation: Clean-cache pinned npm ci succeeded; npm test passed 112 checks; check-dependencies.py verified 51 locked entries, 26 installed packages and 340 unchanged vendor files; make check passed 72 tooling tests. No actual browser runtime, independent full XMPP server/client or production encryption/release readiness claim.

Task: S00-003
Agent: auto-protocol-f474114f0168
Role: protocol
Action: claim
Status: review

Task title: Проверить XMPP WSS/auth библиотеку

state/tasks.json

@@ -1,6 +1,6 @@
 {
   "schema_version": 1,
-  "revision": 112,
+  "revision": 114,
   "tasks": {
     "S00-001": {
       "status": "done",
@@ -32,17 +32,18 @@
       "completed_at": "2026-10-14T19:06:23+00:00"
     },
     "S00-003": {
-      "status": "todo",
-      "owner": null,
-      "started_at": "2026-10-15T04:12:38+00:00",
+      "status": "review",
+      "owner": "auto-protocol-f474114f0168",
+      "started_at": "2026-10-15T11:10:08+00:00",
       "reason": null,
-      "updated_at": "2026-10-15T10:09:24+00:00",
+      "updated_at": "2026-10-15T11:19:59+00:00",
       "blocked_by": [],
       "resume_status": "in_progress",
       "blocker_report": "state/blockers/S00-020.md",
       "handoff": "state/handoffs/S00-003.md",
       "previous_owner": "auto-protocol-59f4d359b339",
-      "resumed_after_blocker": true
+      "resumed_after_blocker": true,
+      "evidence": "state/evidence/S00-003-auto-protocol-f474114f0168.md"
     },
     "S00-004": {
       "status": "blocked",
@@ -2901,6 +2902,29 @@
       "to": "done",
       "reason": null,
       "evidence": "state/evidence/S00-023-review.md"
+    },
+    {
+      "revision": 113,
+      "at": "2026-10-15T11:10:08+00:00",
+      "action": "claim",
+      "task": "S00-003",
+      "agent": "auto-protocol-f474114f0168",
+      "role": "protocol",
+      "from": "todo",
+      "to": "in_progress",
+      "reason": null
+    },
+    {
+      "revision": 114,
+      "at": "2026-10-15T11:19:59+00:00",
+      "action": "submit",
+      "task": "S00-003",
+      "agent": "auto-protocol-f474114f0168",
+      "role": null,
+      "from": "in_progress",
+      "to": "review",
+      "reason": null,
+      "evidence": "state/evidence/S00-003-auto-protocol-f474114f0168.md"
     }
   ],
   "retired_agents": [