fix(address): accept hex TRON addresses in resolveAddress

[piyushbag]

Problem

No open maintainer issues in mcp-server-justlend. resolveAddress rejected valid hex-encoded TRON addresses even though other helpers accept both encodings.

Approach

• Add isValidTronAddress (Base58 or hex).
• Use it in resolveAddress.
• Add unit tests for hex acceptance and addressesEqual.

Test plan

• npm test -- tests/core/services/address.test.ts (21 passed)

FALLBACK: no maintainer-authored issues; TRON stack fix in the JustLend org.

[BlackChar92]

Thanks for the contribution! This exact change was included in #26 as commit 540e769 and has now been merged into main. Your authorship is preserved on the commit.

Since the fix and its tests are already present, we’ll close this PR as superseded by #26. Appreciate the clear implementation and test coverage!

[piyushbag]

Thanks for the update. The same fix is already present on #26 as commit 540e769, so I'm closing this PR as superseded. Happy to help with anything else on address resolution if useful.