Config Set
Domain: Configuration
Motivation
Change a single config value from the command line. Command: hermes config set KEY VALUE.
Concrete Example
hermes config set model.default anthropic/claude-sonnet-4. One line, one change. No editor needed. Faster than config edit for single values.
Analogy
A quick dial on a combination lock - you change one number at a time. hermes config set changes one config value at a time.