feat(workbench): add runtime GIS and sample integrations

resources/sql/008_workbench_alert_events.sql

@@ -0,0 +1,49 @@
+-- Append-only task alert events plus a monotonic current-state projection.
+
+BEGIN;
+
+CREATE SCHEMA IF NOT EXISTS workbench;
+
+CREATE TABLE IF NOT EXISTS workbench.alert_events (
+    project_id uuid NOT NULL,
+    producer_id text NOT NULL CHECK (length(producer_id) > 0),
+    event_id uuid NOT NULL,
+    alert_id text NOT NULL CHECK (length(alert_id) > 0),
+    event_type text NOT NULL CHECK (event_type IN ('raised','acknowledged','resolved')),
+    occurred_at timestamptz NOT NULL,
+    ingested_at timestamptz NOT NULL DEFAULT now(),
+    document jsonb NOT NULL,
+    PRIMARY KEY (project_id,producer_id,event_id),
+    CHECK ((jsonb_typeof(document)='object'
+        AND document->>'producer_id'=producer_id
+        AND document->>'event_id'=event_id::text
+        AND document->>'alert_id'=alert_id
+        AND document->>'event_type'=event_type
+        AND (document->>'occurred_at')::timestamptz=occurred_at) IS TRUE)
+);
+
+CREATE INDEX IF NOT EXISTS alert_events_alert_idx
+    ON workbench.alert_events(project_id,alert_id,occurred_at,event_id);
+
+CREATE TABLE IF NOT EXISTS workbench.alerts (
+    project_id uuid NOT NULL,
+    alert_id text NOT NULL CHECK (length(alert_id) > 0),
+    revision bigint NOT NULL CHECK (revision >= 1),
+    status text NOT NULL CHECK (status IN ('active','acknowledged','resolved')),
+    occurred_at timestamptz NOT NULL,
+    updated_at timestamptz NOT NULL,
+    document jsonb NOT NULL,
+    PRIMARY KEY (project_id,alert_id),
+    CHECK ((jsonb_typeof(document)='object'
+        AND document->>'alert_id'=alert_id
+        AND document->>'status'=status
+        AND (document->>'occurred_at')::timestamptz=occurred_at) IS TRUE)
+);
+
+CREATE INDEX IF NOT EXISTS alerts_active_recent_idx
+    ON workbench.alerts(project_id,occurred_at DESC,alert_id)
+    WHERE status='active';
+
+REVOKE ALL ON ALL TABLES IN SCHEMA workbench FROM PUBLIC;
+
+COMMIT;