fix: prevent Poco::InvalidArgumentException crash in peer module

[lanthora]

This commit fixes a critical crash caused by unhandled Poco::InvalidArgumentException when processing peer messages with invalid IP addresses or ports.

Changes:

1. Added exception handling in Peer::handlePubInfo (peer/peer.cc)

   • Catch Poco::Exception when constructing SocketAddress
   • Log detailed error information (IP, port, error message)
   • Return early to prevent invalid state propagation

2. Added exception handling in PeerManager::handlePubInfo (peer/manager.cc)

   • Wrap peer map operations in try-catch
   • Catch both Poco::Exception and std::exception
   • Log source peer IP and detailed error context

3. Added exception handling in PeerManager::handlePeerQueue (peer/manager.cc)

   • Wrap entire message handling switch in try-catch
   • Log message type and error information
   • Return 0 to continue processing instead of crashing

4. Fixed websocket close frame logging (websocket/client.cc)

   • Changed from direct buffer output to hex format
   • Prevents systemd journalctl from showing "blob data"

Root Cause:
When receiving network messages with invalid IP addresses (e.g., all zeros), Poco::Net::SocketAddress constructor throws Poco::InvalidArgumentException. This exception was uncaught in the message processing thread, causing std::terminate() to be called and the program to crash.

Impact:

• Prevents crash when processing invalid peer messages
• Provides detailed error logging for debugging
• Allows program to continue running instead of terminating

Tested: Compiles successfully with no warnings