fix: sanitize NaN/inf floats to prevent JSON serialization crashes

fix: accept legacy indicator_id/indicator_ids from old database records

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

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

fix: use MAX_AOI_KM2 from config instead of hardcoded 10,000 km² in models

feat: add ANTHROPIC_API_KEY config and AoiAdviceRequest model

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

feat: add season_start/season_end to JobRequest with wrap support

feat: fix nightlights with real VIIRS data + placeholder data warnings

Initial commit: Aperture platform (extracted from SR4S)