brainless 0.4.1

• _Agent-Context/LEARNINGS.md: the owner's standing preferences and the lessons from
  correcting an agent, each with the rule, why, and how to apply it. They live in the vault,
  not in one tool's memory. The SessionStart hook loads the file, and the writing and
  narratives agents and the Buzz reply worker read it. AGENT-RULES.md Rule 1 names it.
  The public export ships a stub with one example entry.