Refactor addresses

[owl352]

Issue

Currently platform addresses, shielded addresses and core addresses has different mechanism for discovery because was writen by different dev's in different time without deep review.

Things done

• Refactored addresses derivations and now platform addresses, shielded addresses and l1 addresses has same logic for derivation. Platform addresses and shielded addresses also now stored in db like l1 addresses
• When shielded unused addresses gone, backend derive 5 new addresses when user enter password (sync/spend notes)
• Refactored constants because constants.ts grow to 250+ lines
• update tests
• update CLAUDE.md