- Focus on header mode
- Add context to errors, trace guard clauses, warn on non-returned
errors
- Give errors distinct names so compiler will recognize if unchecked
- Remove redundant type declarations/fix typos
- Prevents duplicate key constraint violation from blocking the process
from moving forward on restart.
- If header_id, log_idx, and tx_idx are the same, we can safely do
nothing since it's definitely the same log - a reorg would cause the
original header to be replaced with a new ID.
- limit missing headers results set to 100 so that extraction doesn't
excessively block delegation
- wrap checked headers functions in repository struct
- move storage repository to factory, to correspond with event
repository path
- remove unused files
- reformat sql
- remove line breaks in imports
