Add ECC Harness: phd_research_os/MEMORY.md

phd_research_os/MEMORY.md

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+# PhD Research OS — Persistent Memory Store
+
+> Cross-session state for the ECC Harness. Updated by agent_os.py.
+> Each entry has a "Last Validated" marker.
+
+## Assumptions
+
+| Key | Value | Last Validated | Category |
+|-----|-------|---------------|----------|
+| base_model | Qwen/Qwen2.5-3B-Instruct | 2026-04-23 | architecture |
+| training_dataset | nkshirsa/phd-research-os-sft-data | 2026-04-23 | architecture |
+| db_schema_version | 1.0 | 2026-04-23 | architecture |
+| fixed_point_scale | 1000 | 2026-04-23 | invariant |
+| regression_recall_threshold | 0.70 | 2026-04-23 | quality_gate |
+| regression_hallucination_max | 0.10 | 2026-04-23 | quality_gate |
+| regression_epistemic_accuracy | 0.60 | 2026-04-23 | quality_gate |
+| hypothesis_confidence_lock | always_low | 2026-04-23 | invariant |
+
+## Learned Patterns
+
+(Populated by companion agents during postflight meta-learning)
+
+## Known Issues
+
+(Populated when agents encounter anomalies)