Use OSM as the single source of mountain passes

Replace the centcols CSV download/enrichment pipeline with OSM PBF
extraction as the primary (only) source: merge osmpass into mountain_pass,
drop the centcols table and model fields, filter to named passes with
elevation, and remove the centcols CLI flags.

2 files changed, 17 insertions, 10 deletions

diff --git a/db/migrations/20260821000000_osm_only_mountain_passes.sql b/db/migrations/20260821000000_osm_only_mountain_passes.sql
new file mode 100644
index 0000000..ebeed55
--- /dev/null
+++ b/db/migrations/20260821000000_osm_only_mountain_passes.sql
@@ -0,0 +1,14 @@
+-- migrate:up
+drop table mountain_passes;
+alter table osm_passes rename to mountain_passes;
+
+-- migrate:down
+alter table mountain_passes rename to osm_passes;
+create table mountain_passes (
+    id integer primary key,
+    external_id text unique not null,
+    name text not null,
+    country_code text not null,
+    department_code text not null,
+    elevation integer not null
+);
diff --git a/db/schema.sql b/db/schema.sql
index 4c03183..60505bb 100644
--- a/db/schema.sql
+++ b/db/schema.sql
@@ -1,13 +1,5 @@
 CREATE TABLE IF NOT EXISTS "schema_migrations" (version varchar(255) primary key);
-CREATE TABLE mountain_passes (
-    id integer primary key,
-    external_id text unique not null,
-    name text not null,
-    country_code text not null,
-    department_code text not null,
-    elevation integer not null
-, latitude real, longitude real);
-CREATE TABLE osm_passes (
+CREATE TABLE IF NOT EXISTS "mountain_passes" (
     id integer primary key,
     osm_id integer unique not null,
     name text,
@@ -47,4 +39,5 @@ INSERT INTO "schema_migrations" (version) VALUES
   ('20260804000000'),
   ('20260807000000'),
   ('20260813000000'),
-  ('20260820184307');
+  ('20260820184307'),
+  ('20260821000000');