Add PCP architecture docs and TGU ops updates

Capture current PCP architecture notes, service-map prototypes, TGU operations UI/map work, local configuration updates, database helper scripts, and request/sample JSON artifacts.

services/pcp-tgu-ops-ui/src/features/tgu-map-2d/geometry/pointInPolygon.ts

@@ -0,0 +1,21 @@
+import type { GeoPoint } from "../model/mapTypes";
+
+export function pointInPolygon(point: GeoPoint, polygon: GeoPoint[]): boolean {
+  if (polygon.length < 3) return false;
+
+  let inside = false;
+  for (let i = 0, j = polygon.length - 1; i < polygon.length; j = i++) {
+    const pi = polygon[i]!;
+    const pj = polygon[j]!;
+    const intersects =
+      pi.lat > point.lat !== pj.lat > point.lat &&
+      point.lon < ((pj.lon - pi.lon) * (point.lat - pi.lat)) / (pj.lat - pi.lat) + pi.lon;
+
+    if (intersects) {
+      inside = !inside;
+    }
+  }
+
+  return inside;
+}
+