feat(extract): add OpenWeatherMap daily weather extractor

Adds extract/openweathermap package with daily weather extraction for 8
coffee-growing regions (Brazil, Vietnam, Colombia, Ethiopia, Honduras,
Guatemala, Indonesia). Feeds crop stress signal for commodity sentiment score.

Extractor:
- OWM One Call API 3.0 / Day Summary — one JSON.gz per (location, date)
- extract_weather: daily, fetches yesterday + today (16 calls max)
- extract_weather_backfill: fills 2020-01-01 to yesterday, capped at 500
  calls/run with resume cursor '{location_id}:{date}' for crash safety
- Full idempotency via file existence check; state tracking via extract_core

SQLMesh:
- seeds.weather_locations (8 regions with lat/lon/variety)
- foundation.fct_weather_daily: INCREMENTAL_BY_TIME_RANGE, grain
  (location_id, observation_date), dedup via hash key, crop stress flags:
  is_frost (<2°C), is_heat_stress (>35°C), is_drought (<1mm), in_growing_season

Landing path: LANDING_DIR/weather/{location_id}/{year}/{date}.json.gz

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

transform/sqlmesh_materia/models/serving/ice_warehouse_stocks.sql

@@ -1,19 +1,12 @@
--- Serving mart: ICE certified Coffee C warehouse stocks, analytics-ready.
---
--- Adds 30-day rolling average, week-over-week change, and drawdown from
--- 52-week high. Physical supply indicator used alongside S/D and positioning.
---
--- "Certified stocks" = coffee graded and stamped as eligible for delivery
--- against ICE Coffee C futures — traders watch this as a squeeze indicator.
---
--- Grain: one row per report_date.
-
+/* Serving mart: ICE certified Coffee C warehouse stocks, analytics-ready. */ /* Adds 30-day rolling average, week-over-week change, and drawdown from */ /* 52-week high. Physical supply indicator used alongside S/D and positioning. */ /* "Certified stocks" = coffee graded and stamped as eligible for delivery */ /* against ICE Coffee C futures — traders watch this as a squeeze indicator. */ /* Grain: one row per report_date. */
 MODEL (
   name serving.ice_warehouse_stocks,
   kind INCREMENTAL_BY_TIME_RANGE (
     time_column report_date
   ),
-  grain (report_date),
+  grain (
+    report_date
+  ),
   start '2000-01-01',
   cron '@daily'
 );
@@ -23,45 +16,25 @@ WITH base AS (
     f.report_date,
     f.total_certified_bags,
     f.pending_grading_bags,
-
-    -- Week-over-week change (compare to 7 calendar days ago via LAG over ordered rows)
-    -- Using LAG(1) since data is daily: compares to previous trading/reporting day
-    f.total_certified_bags
-      - LAG(f.total_certified_bags, 1) OVER (ORDER BY f.report_date)  AS wow_change_bags,
-
-    -- 30-day rolling average (smooths daily noise)
-    round(
-      AVG(f.total_certified_bags::double) OVER (
-        ORDER BY f.report_date ROWS BETWEEN 29 PRECEDING AND CURRENT ROW
-      ),
+    f.total_certified_bags /* Week-over-week change (compare to 7 calendar days ago via LAG over ordered rows) */ /* Using LAG(1) since data is daily: compares to previous trading/reporting day */ - LAG(f.total_certified_bags, 1) OVER (ORDER BY f.report_date) AS wow_change_bags,
+    ROUND(
+      AVG(f.total_certified_bags::DOUBLE) OVER (ORDER BY f.report_date ROWS BETWEEN 29 PRECEDING AND CURRENT ROW),
       0
-    )                                                                   AS avg_30d_bags,
-
-    -- 52-week high (365 calendar days ≈ 252 trading days; use 365-row window as proxy)
-    MAX(f.total_certified_bags) OVER (
-      ORDER BY f.report_date ROWS BETWEEN 364 PRECEDING AND CURRENT ROW
-    )                                                                   AS high_52w_bags,
-
-    -- Drawdown from 52-week high (pct below peak — squeeze indicator)
-    round(
-      (f.total_certified_bags::double
-       - MAX(f.total_certified_bags) OVER (
-           ORDER BY f.report_date ROWS BETWEEN 364 PRECEDING AND CURRENT ROW
-         )::double
-      )
-      / NULLIF(
-          MAX(f.total_certified_bags) OVER (
-            ORDER BY f.report_date ROWS BETWEEN 364 PRECEDING AND CURRENT ROW
-          )::double,
-          0
-        ) * 100,
+    ) AS avg_30d_bags, /* 30-day rolling average (smooths daily noise) */
+    MAX(f.total_certified_bags) OVER (ORDER BY f.report_date ROWS BETWEEN 364 PRECEDING AND CURRENT ROW) AS high_52w_bags, /* 52-week high (365 calendar days ≈ 252 trading days; use 365-row window as proxy) */
+    ROUND(
+      (
+        f.total_certified_bags::DOUBLE - MAX(f.total_certified_bags) OVER (ORDER BY f.report_date ROWS BETWEEN 364 PRECEDING AND CURRENT ROW)::DOUBLE
+      ) / NULLIF(
+        MAX(f.total_certified_bags) OVER (ORDER BY f.report_date ROWS BETWEEN 364 PRECEDING AND CURRENT ROW)::DOUBLE,
+        0
+      ) * 100,
       2
-    )                                                                   AS drawdown_from_52w_high_pct
-
-  FROM foundation.fct_ice_warehouse_stocks f
-  WHERE f.report_date BETWEEN @start_ds AND @end_ds
+    ) AS drawdown_from_52w_high_pct /* Drawdown from 52-week high (pct below peak — squeeze indicator) */
+  FROM foundation.fct_ice_warehouse_stocks AS f
+  WHERE
+    f.report_date BETWEEN @start_ds AND @end_ds
 )
-
 SELECT
   b.report_date,
   d.commodity_name,
@@ -72,7 +45,9 @@ SELECT
   b.avg_30d_bags,
   b.high_52w_bags,
   b.drawdown_from_52w_high_pct
-FROM base b
-CROSS JOIN foundation.dim_commodity d
-WHERE d.ice_stock_report_code = 'COFFEE-C'
-ORDER BY b.report_date
+FROM base AS b
+CROSS JOIN foundation.dim_commodity AS d
+WHERE
+  d.ice_stock_report_code = 'COFFEE-C'
+ORDER BY
+  b.report_date