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
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