[dripsy483]

Summary

• Identify canonical USDC by the selected network's issuer instead of symbol alone, with counterfeit-asset fixture coverage.
• Add bounded transaction wait policies and cancellable status watching with progress updates.
• Preserve submitted transaction hashes and retry guidance when status lookup fails.

Verification

• Tests and builds were not run, as requested.
• The generated-doc command was unavailable because tsx dependencies are not installed.

Closes #99
Closes #104
Closes #105
Closes #106