Mendral co-founder and post author here.
I agree with your statement and explained in a few other comments how we're doing this.
tldr:
- Something happens that needs investigating
- Main (Opus) agent makes focused plan and spawns sub agents (Haiku)
- They use ClickHouse queries to grab only relevant pieces of logs and return summaries/patterns
This is what you would do manually: you're not going to read through 10 TB of logs when something happens; you make a plan, open a few tabs and start doing narrow, focused searches.