Experiment-and-prediction view (hypothesis → predicted → actual)

[CodeBuildder]

Context

UI panel showing the experiment planner output alongside actual outcomes. Parent: #46.

Acceptance Criteria

• Each experiment shows: hypothesis text, predicted_outcome, actual_outcome, brier_score
• Correct predictions shown in green, surprises in red/amber
• Last 20 experiments shown with trendline for brier_score over time
• Clicking an experiment row opens the full reasoning trace from the world model

Dependencies

Blocked by: none | Blocks: none

Notes

No model tier. UI work.