When an agent goes bankrupt, the simulation can now restart for another
episode while preserving the scratchpad from the previous attempt. This
lets us measure whether LLMs can learn from failure via persistent notes.
Each episode gets its own SQLite DB (*.ep1.db, *.ep2.db, ...) so plotting
scripts and post-hoc analysis work unchanged. The rollout JSON aggregates
per-episode transcripts, turns, and costs.
Key changes:
- --max-episodes CLI flag (default 1, fully backward compatible)
- Per-episode DB files when max_episodes > 1
- Scratchpad read from old DB, written into fresh DB between episodes
- RunState tracks episode results with finish_episode/reset_for_new_episode
- Agent prompt tells it about the episode number and to read its scratchpad
- Plotting script for multi-episode fund curves + scratchpad evolution
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
