P3-B: Experience Replay

[github-actions]

Why: Simulate queries during idle time to reinforce connection patterns.

• P3-B1: Implement daydreamer/ExperienceReplay.ts

  • Sample random or recent queries
  • Execute query (triggers edge traversals)
  • Mark traversed edges for LTP strengthening

• P3-B2: Add experience replay test coverage

  • tests/daydreamer/ExperienceReplay.test.ts

Exit Criteria: Daydreamer reinforces memory patterns.