# Phase-0 SSL feasibility gate — null

**Date:** 2026-06-24
**Path B deviation:** Daily 2019-2023 (not hourly 2008-2022); Python harness
(not Go #4); gate metric adapted from silhouette-on-embedding to match
available data. Go harness (#4) remains open for production experiments.

## Data
- Train: EUR/USD daily 2019-2021 (907 windows)
- OOS: EUR/USD daily 2022-2023 (593 windows)
- HV label: top-33% realized-vol days = high-volatility (196 days)

## Results
| | Value | Gate |
|---|---|---|
| TS-JEPA mean silhouette (3 seeds) | 0.0182 | > 0.20 → **False** |
| Beats PCA baseline (0.1359) | 0.0182 | > PCA → **False** |
| Seed stability (spread) | 86.73% | < 10% → **False** |
| PC1/HV correlation | 0.5258 | < 0.95 → **True** |

Per-seed: ['0.0268', '0.0110', '0.0168']

## Verdict: **NULL**

One or more gate criteria not met. See null result protocol in #5.