add support for barometric pressure

db/init/001_schema.sql

@@ -41,6 +41,21 @@ SELECT create_hypertable('observations_ws90', 'ts', if_not_exists => TRUE);
 CREATE INDEX IF NOT EXISTS idx_observations_ws90_site_ts ON observations_ws90(site, ts DESC);
 CREATE INDEX IF NOT EXISTS idx_observations_ws90_station_ts ON observations_ws90(station_id, ts DESC);
 
+-- Barometric pressure observations (from other MQTT sources)
+CREATE TABLE IF NOT EXISTS observations_baro (
+  ts              TIMESTAMPTZ NOT NULL,
+  received_at     TIMESTAMPTZ NOT NULL DEFAULT now(),
+  site            TEXT NOT NULL,
+  source          TEXT NOT NULL,
+  pressure_hpa    DOUBLE PRECISION,
+  payload_json    JSONB
+);
+
+SELECT create_hypertable('observations_baro', 'ts', if_not_exists => TRUE);
+
+CREATE INDEX IF NOT EXISTS idx_observations_baro_site_ts ON observations_baro(site, ts DESC);
+CREATE INDEX IF NOT EXISTS idx_observations_baro_source_ts ON observations_baro(source, ts DESC);
+
 -- Open-Meteo hourly baseline forecasts
 CREATE TABLE IF NOT EXISTS forecast_openmeteo_hourly (
   ts               TIMESTAMPTZ NOT NULL,
@@ -100,6 +115,37 @@ BEGIN
   END IF;
 END$$;
 
+-- Raw retention: 90 days (barometric pressure)
+DO $$
+BEGIN
+  IF NOT EXISTS (
+    SELECT 1
+    FROM timescaledb_information.jobs j
+    WHERE j.proc_name = 'policy_retention'
+      AND j.hypertable_name = 'observations_baro'
+  ) THEN
+    PERFORM add_retention_policy('observations_baro', INTERVAL '90 days');
+  END IF;
+END$$;
+
+-- Compression after 7 days
+ALTER TABLE observations_baro SET (
+  timescaledb.compress,
+  timescaledb.compress_segmentby = 'site,source'
+);
+
+DO $$
+BEGIN
+  IF NOT EXISTS (
+    SELECT 1
+    FROM timescaledb_information.jobs
+    WHERE proc_name = 'policy_compression'
+      AND hypertable_name = 'observations_baro'
+  ) THEN
+    PERFORM add_compression_policy('observations_baro', INTERVAL '7 days');
+  END IF;
+END$$;
+
 -- 1-minute continuous aggregate
 CREATE MATERIALIZED VIEW IF NOT EXISTS cagg_ws90_1m
 WITH (timescaledb.continuous) AS