Server Security (S-1 through S-8):
- S-1: Type-check and clamp peerId, protocolVersion, password
- S-2: Validate numeric/boolean/enum fields in relay peerData
- S-3: Construct explicit relay payload (stop spreading raw data)
- S-4: Type-check targetId and actionTimestamp in EVENT_ACK
- S-5: Restrict room IDs to [a-zA-Z0-9-] only
- S-7: Add eventCounts periodic cleanup alongside connectionCounts
- S-8: Guard version parsing against NaN bypass
Documentation (P-1, R-1 through R-6):
- P-1: Fix PRIVACY.md typo, document all in-memory data maps
- R-1/R-5: Fix stale sync-constants.bat references in shared/
- R-2: Fix stale lastTargetState ref in ARCHITECTURE.md
- R-3: Extension README title reflects cross-browser support
- R-6: Document content injection markers in scripts/README.md
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