v0.4.3 — Confidence Scores + Brain Pages

Nexus Memory v0.4.3

🧠 New Feature: Confidence Scores in Recall

Every memory returned by recall() now includes a composite confidence score:

Field	Description
confidence	0.0-1.0 composite score (belief trust > provenance confidence > default 0.7)
confidence_label	Human-readable: very high / high / medium / low / very low
evidence_count	Number of corroborating sources
lifecycle_status	canonical / deprecated / rolled_back
valid_until	Expiry timestamp (if TTL set)

How composite confidence works:

1. If memory has a belief trust score → use that
2. Else if provenance has confidence → use that
3. Else default 0.7
4. +0.05 per evidence source (max +0.2 boost)

This means agents can now tell their users: "I found this memory with high confidence (0.85, backed by 3 sources)" - instead of just returning text with a relevance score.

📦 Upgrade

cd ~/nexus-memory && git pull && pip install -e .

Backwards compatible - existing memories without trust/evidences use provenance confidence.