{"schema":"doggybagg.index.pulse.v1","generated_at":"2026-05-18T19:52:16.615310+00:00","methodology":{"dhli":"Decay Half-Life Index — estimated months until regional avg decay crosses terminal band (≥85), from decay score, velocity, and stability.","terminal_decay_threshold":85.0},"global":{"indexed_assets":45,"regional_hubs":3,"avg_decay_score":72.81,"median_dhli_months":1.5},"declining_hubs":[{"region":"Allentown, PA","hub_path":"/pa/allentown/restoration-decay","asset_count":13,"avg_decay_score":75.84,"dhli_months":1.1,"dhli_label":"<2 mo","dhli_band":"critical","dhli_summary":"~1 mo until decay score 85 (velocity 4.0 · stability 48)"},{"region":"Pittsburgh, PA","hub_path":"/pa/pittsburgh/restoration-decay","asset_count":15,"avg_decay_score":73.19,"dhli_months":1.4,"dhli_label":"<2 mo","dhli_band":"critical","dhli_summary":"~1 mo until decay score 85 (velocity 3.8 · stability 46)"},{"region":"Philadelphia, PA","hub_path":"/pa/philadelphia/restoration-decay","asset_count":17,"avg_decay_score":70.17,"dhli_months":2.0,"dhli_label":"2 mo","dhli_band":"critical","dhli_summary":"~2 mo until decay score 85 (velocity 3.7 · stability 49)"}],"lifecycle_feed":[{"lifecycle_state":"DEAD_FLATLINE","region":"Philadelphia, PA","occurred_at":"2026-05-18 17:54:49"},{"lifecycle_state":"ACTIVE_DECAY","region":"Philadelphia, PA","occurred_at":"2026-05-18 16:54:49"},{"lifecycle_state":"STRUCTURAL_DRIFT","region":"Philadelphia, PA","occurred_at":"2026-05-18 15:54:49"},{"lifecycle_state":"ACTIVE_DECAY","region":"Pittsburgh, PA","occurred_at":"2026-05-18 14:54:49"},{"lifecycle_state":"DEAD_FLATLINE","region":"Pittsburgh, PA","occurred_at":"2026-05-18 13:54:49"},{"lifecycle_state":"DEAD_FLATLINE","region":"Philadelphia, PA","occurred_at":"2026-05-18 12:54:49"},{"lifecycle_state":"COLLAPSING","region":"Philadelphia, PA","occurred_at":"2026-05-18 11:54:49"},{"lifecycle_state":"DECAYED","region":"Philadelphia, PA","occurred_at":"2026-05-18 10:54:49"}],"attribution":"DoggyBagg Index"}