refactor: rename "indicators" to "EO products" throughout

fix: address code review — memory, dedup, confidence, zoom, overview

feat: add output pipeline for seasonal analysis and compound signals

feat: add cross-indicator compound signal detection

feat: add four-factor confidence scoring model

feat: add seasonal baseline computation module

feat: add anomaly, hotspot, confidence fields to IndicatorResult; add CompoundSignal model

feat: add test fixtures for EO product overhaul

refactor: strip to 4 real EO indicators, remove all tests and mock fallbacks

test: update report tests for new narrative structure

feat: add cross-indicator narrative engine with interpretation templates

test: extract shared helpers to conftest, strengthen harvest assertions

feat: add batch support to water indicator

feat: add batch support to buildup indicator

feat: add batch support to SAR indicator

fix: NDVI harvest baseline_path never assigned after download

test: add batch flow E2E test for NDVI pipeline

feat: three-phase batch job worker (submit → poll → harvest)

feat: implement NdviIndicator.harvest() with graceful degradation

feat: implement NdviIndicator.submit_batch() for openEO batch jobs

feat: add batch job interface to BaseIndicator (uses_batch, submit_batch, harvest)

feat: add submit_as_batch() helper for openEO batch jobs

feat: add composite score computation and overview map renderer

feat: add built-up settlement extent indicator via NDBI

feat: add SAR backscatter indicator with change detection and flood mapping

feat: add SAR and built-up graph builders to openEO client

feat: rewrite nightlights indicator with VIIRS EOG direct download

feat: rewrite rainfall indicator with CHIRPS direct download

feat: rewrite LST indicator with Sentinel-3 SLSTR via openEO

feat: rewrite water indicator with pixel-level MNDWI via openEO

feat: add MNDWI and LST graph builders to openEO client

test: add end-to-end smoke test for NDVI openEO pipeline

feat: add pixel-level NDVI indicator via CDSE openEO

feat: add raster-on-true-color map renderer (render_raster_map)

test: add synthetic GeoTIFF fixtures for raster map tests

feat: add openEO client with NDVI and true-color graph builders

feat: add centralized config module with resolution and openEO settings

feat: refactor NO2 to aggregate hourly→monthly chart data

feat: refactor LST to aggregate daily→monthly chart data

feat: filter fires chart data by season_months

feat: refactor cropland to use season_months, add rainfall season filter

feat: add per-month chart data to vegetation and water indicators (Tasks 4 & 6)

feat: wire season_months through worker to all indicators

feat: add season_start/season_end to JobRequest with wrap support

feat: add baseline range to NO2 and Nightlights chart data

feat: add baseline range (min/mean/max) to vegetation and cropland chart data

feat: add baseline range to water and LST indicators (Tasks 7 & 8)

feat: add baseline range (min/mean/max) to rainfall chart data

feat: add monthly and summary baseline overlay to chart renderer

feat: cartopy map renderers for points, choropleth, grid, and status overlays