feat: add seasonal baseline computation module

Add implementation plan for EO product analytical upgrade

docs: implementation plan for AOI advisor (Claude-powered region insight)

docs: implementation plan for AOI click-to-place redesign

docs: implementation plan for narrative-driven report redesign

docs: implementation plan for SAR log10 fix and sequential batch processing

docs: implementation plan for batch SAR/buildup/water + NDVI fix

docs: add openEO batch jobs implementation plan

docs: add Phase C spec and implementation plan — SAR, built-up, visual overview

docs: add Phase B implementation plan — migrate 4 indicators

docs: add Phase A implementation plan — openEO NDVI pipeline

docs: add Phase 2 implementation plan for analysis window and monthly refactor

docs: add Phase 1 implementation plan for basemap fix and baseline charts

docs: add map overlays implementation plan

docs: add user accounts & job history implementation plan