[WIP] HTTP probing: support /tls/http multiaddrs

[Copilot]

HTTP probing: support /tls/http multiaddrs

According to libp2p specs, both /https and /tls/http are valid multiaddr for HTTPS providers, but spark only tests /https. This PR adds support for /tls/http multiaddrs.

Plan:

• Explore repository structure and understand codebase
• Set up Zinnia runtime and run existing tests
• Analyze current multiaddr parsing implementation
• Add test cases for /tls/http multiaddrs (initially failing)
• Update multiaddrToHttpUrl function to handle /tls/http patterns
• Verify all tests pass including new /tls/http test cases
• Run linting and ensure code style compliance
• Manual verification of functionality and edge cases

Changes Made:

• test/multiaddr.test.js: Added 5 new test cases for /tls/http multiaddr patterns:

  • /ip4/127.0.0.1/tcp/443/tls/http → https://127.0.0.1
  • /ip4/127.0.0.1/tcp/8080/tls/http → https://127.0.0.1:8080
  • /dns/meridian.space/tcp/8080/tls/http → https://meridian.space:8080
  • /dns/meridian.space/tls/http → https://meridian.space
  • /ip4/127.0.0.1/tls/http → https://127.0.0.1

• lib/multiaddr.js: Updated parsing logic to handle two /tls/http patterns:

  • /tls/http (without TCP port) - treated as /https
  • /tcp/port/tls/http - treated as /tcp/port/https

Verification:

• All existing tests continue to pass (no regressions)
• All new /tls/http test cases pass
• Manual testing confirms correct HTTPS URL generation
• Edge cases properly fail with appropriate error messages
• Code passes linting and style checks

Fixes #139.

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