Upgrade tosdk to 0.5.1

Align openfox with native address semantics

Bridge local settlement records to runtime refs

Add runtime settlement inspection UX

Add execution policy driven provider fallback

Migrate test addresses from 20-byte Ethereum to 32-byte TOS format

Add execution fallback for discovery providers

Wire provider diagnostics into runtime selection

Explain discovery provider selection

docs: position openfox as intent-native runtime

chore: migrate tosdk to @tosnetwork/tosdk@0.4.0 from npm

refactor: rename wei→tomi denomination across entire codebase

Update README with P2P Agent Mail documentation

Add TNS name resolution to mail module

Add P2P agent mail module