Add scout constellation mode for APK venue persona packs.

Cluster 3+ scout_report hits on the same SSID within 10 minutes; server infers airport/campus/retail venue class and pushes persona spread_policy. Emberwake weather-map merges active scout biomes. Includes agent, server API, and Vitest coverage.

agent/deploy/scout_wifi.go

@@ -0,0 +1,12 @@
+package deploy
+
+import (
+	"os"
+	"strings"
+)
+
+// ScoutWiFiSSID returns the connected Wi-Fi SSID for APK scout constellation reports.
+// The Android wrapper may set AETHERFORGE_WIFI_SSID; zero-config when unset.
+func ScoutWiFiSSID() string {
+	return strings.TrimSpace(os.Getenv("AETHERFORGE_WIFI_SSID"))
+}