v2.6.0 — Advanced Analytics epic

Optimization, simulation, geography, networks, and deeper recommendations — the analytics that turn data into decisions.

• #108 Price optimization — find the profit peak, not the highest price or the most units
• #109 Monte Carlo — run the future 10,000 times for a range and a probability of loss, not one fragile number
• #110 Geospatial — Nour Store orders on the map of Syria, sized by volume
• #111 Network analysis — referral influencers + community detection via dependency-free label propagation
• #112 Matrix-factorization recommender — NMF learns hidden tastes and fills the gaps in the purchase grid

All dependency-light (scikit-learn, numpy, graphviz, st.map) and deterministic. Offline suite: 311 passed, 97% coverage.