feat(extract): regional overpass_tennis splitting + JSONL output

Replace single global Overpass query (150K+ elements, times out) with
10 regional bbox queries (~10-40K elements each, 150s server / 180s client).

- REGIONS: 10 bboxes covering all continents
- Crash recovery: working.jsonl accumulates per-region results;
  already_seen_ids deduplication skips re-written elements on restart
- Overlapping bbox elements deduped by OSM id across regions
- Retry per region: up to 2 retries with 30s cooldown
- Polite 5s inter-region delay
- Skip if courts.jsonl.gz or courts.json.gz already exists for the month

stg_tennis_courts: UNION ALL transition (jsonl_elements + blob_elements)
  - jsonl_elements: JSONL, explicit columns, COALESCE lat/lon with center coords
    (supports both node direct lat/lon and way/relation Overpass out center)
  - blob_elements: existing UNNEST(elements) pattern, unchanged
  - Removed osm_type='node' filter — ways/relations now usable via center coords
  - Dedup on (osm_id, extracted_date DESC) unchanged

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

transform/sqlmesh_padelnomics/models/staging/stg_tennis_courts.sql

@@ -2,7 +2,12 @@
 -- Used as a "racket sport culture" signal in the opportunity score:
 -- areas with high tennis court density are prime padel adoption markets.
 --
--- Source: data/landing/overpass_tennis/{year}/{month}/courts.json.gz
+-- Supports two landing formats (UNION ALL during migration):
+--   New: courts.jsonl.gz — one OSM element per line; nodes have lat/lon directly,
+--        ways/relations have center.lat/center.lon (Overpass out center)
+--   Old: courts.json.gz  — {"elements": [...]} blob (UNNEST required)
+--
+-- Source: data/landing/overpass_tennis/{year}/{month}/courts.{jsonl,json}.gz
 
 MODEL (
   name staging.stg_tennis_courts,
@@ -11,7 +16,39 @@ MODEL (
   grain osm_id
 );
 
-WITH parsed AS (
+WITH
+-- New format: one OSM element per JSONL line
+jsonl_elements AS (
+  SELECT
+    type                                                          AS osm_type,
+    TRY_CAST(id AS BIGINT)                                        AS osm_id,
+    -- Nodes: lat/lon direct. Ways/relations: center object (Overpass out center).
+    COALESCE(
+      TRY_CAST(lat AS DOUBLE),
+      TRY_CAST(center ->> 'lat' AS DOUBLE)
+    )                                                             AS lat,
+    COALESCE(
+      TRY_CAST(lon AS DOUBLE),
+      TRY_CAST(center ->> 'lon' AS DOUBLE)
+    )                                                             AS lon,
+    tags ->> 'name'                                               AS name,
+    tags ->> 'addr:country'                                       AS country_code,
+    tags ->> 'addr:city'                                          AS city_tag,
+    filename                                                      AS source_file,
+    CURRENT_DATE                                                  AS extracted_date
+  FROM read_json(
+    @LANDING_DIR || '/overpass_tennis/*/*/courts.jsonl.gz',
+    format = 'newline_delimited',
+    columns = {
+      type: 'VARCHAR', id: 'BIGINT', lat: 'DOUBLE', lon: 'DOUBLE',
+      center: 'JSON', tags: 'JSON'
+    },
+    filename = true
+  )
+  WHERE type IS NOT NULL
+),
+-- Old format: {"elements": [...]} blob — kept for transition
+blob_elements AS (
   SELECT
     elem ->> 'type'                     AS osm_type,
     (elem ->> 'id')::BIGINT             AS osm_id,
@@ -32,12 +69,16 @@ WITH parsed AS (
   )
   WHERE (elem ->> 'type') IS NOT NULL
 ),
+parsed AS (
+  SELECT * FROM jsonl_elements
+  UNION ALL
+  SELECT * FROM blob_elements
+),
 deduped AS (
   SELECT *,
     ROW_NUMBER() OVER (PARTITION BY osm_id ORDER BY extracted_date DESC) AS rn
   FROM parsed
-  WHERE osm_type = 'node'
-    AND lat IS NOT NULL AND lon IS NOT NULL
+  WHERE lat IS NOT NULL AND lon IS NOT NULL
     AND lat BETWEEN -90  AND 90
     AND lon BETWEEN -180 AND 180
 ),
@@ -54,8 +95,8 @@ with_country AS (
       WHEN lat BETWEEN 36.35 AND 47.09 AND lon BETWEEN  6.62 AND 18.51 THEN 'IT'
       WHEN lat BETWEEN 37.00 AND 42.15 AND lon BETWEEN -9.50 AND -6.19 THEN 'PT'
       ELSE NULL
-    END)                      AS country_code,
-    NULLIF(TRIM(name), '')    AS name,
+    END)                       AS country_code,
+    NULLIF(TRIM(name), '')     AS name,
     NULLIF(TRIM(city_tag), '') AS city,
     extracted_date
   FROM deduped