Ship macro/FRED interpretation feature: per-variable coefficient interpretation fields (unit_meaning/transformation/lag/fred_series/economic_channel/hazard_ratio_per_unit/worked_example) across variable_dictionary, coefficients, macro_glossary, freddie/hazard; UI hazard-ratio column + expandable interpretation panels + How-to-read intro panels.

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UI v3: fintech-direction design pass (5 grafts), waterfall historical-mode fix, explain-strip placement + shared hook, palette contrast fix

Ship App v2 + Tier-2 sandbox (5-tab UI, analyze_data, contract-first API)

UI: action-effect waterfall + header updates + stage-horizon guide (api.js)

Fix UI-API contract: canonical tool payloads + response adapters (422 fix)

Day 4: runtime file set (engine, agent, API, UI source, panel, DFAST scenarios, model cache, exhibits)