server/data/p1/FIXTURE_SANITY.md

P1 Fixture Sanity

This folder now contains three paired low-fidelity/high-fidelity P1 fixtures:

• boundary_default_reset.json
• bad_low_iota.json
• lowfi_feasible_local.json

Calibration source:

• coarse measured sweep artifact: baselines/sweep_results/measured_sweep_20260308T050043Z.json
• targeted local probes around the default reset seed

Current interpretation:

• boundary_default_reset.json
  • near-boundary reset reference
  • infeasible, but close enough that short repair episodes are realistic
• bad_low_iota.json
  • clearly bad infeasible case
  • demonstrates that edge iota can be the blocking constraint even when triangularity is already acceptable
• lowfi_feasible_local.json
  • low-fidelity feasible local target
  • reachable from the default reset band with two intuitive knob increases

Observed from paired run:

• low-fi vs high-fi feasibility alignment and metric deltas are documented in baselines/fixture_high_fidelity_pairs.json.
• decision on whether any reset seed should be changed from the current default

Current paired summary (baselines/fixture_high_fidelity_pairs.json):

• bad_low_iota.json:

  • both fidelities infeasible
  • low/high feasibility match: true
  • low/high score match: both 0.0

• boundary_default_reset.json:

  • both fidelities infeasible
  • low/high feasibility match: true
  • low/high score match: both 0.0

• lowfi_feasible_local.json:

  • both fidelities feasible
  • low/high feasibility match: true
  • high-fidelity score improved slightly: 0.29165951078327634 → 0.2920325118884466