[simplex]: fix docker build

sdk/packages/simplex/scripts/Dockerfile

@@ -2,7 +2,7 @@
 FROM node:22
 
 # Install dependencies required for builds
-RUN apt-get update && apt-get install -y python3 make g++ git curl protobuf-compiler --no-install-recommends && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get install -y python3 make g++ git curl protobuf-compiler libprotobuf-dev --no-install-recommends && rm -rf /var/lib/apt/lists/*
 
 # Create non-root user
 RUN groupadd -g 1001 simplex && \

sdk/packages/simplex/scripts/docker-compose.yml

@@ -37,6 +37,7 @@ services:
         command:
             - "--config.file=/etc/prometheus/prometheus.yml"
             - "--storage.tsdb.retention.time=30d"
+            - "--web.enable-admin-api"
         networks:
             - simplex-network
         ports:

sdk/packages/simplex/scripts/generate-proto.sh

@@ -69,6 +69,19 @@ rm -rf "$OUT_DIR"
 mkdir -p "$OUT_DIR"
 
 echo "Generating TypeScript from proto files..."
+# Locate well-known proto includes (wrappers.proto, descriptor.proto, etc.)
+WELL_KNOWN_PROTOS=""
+for candidate in "$(dirname "$(command -v protoc)" 2>/dev/null)/../include" /usr/include /usr/local/include; do
+	if [ -f "$candidate/google/protobuf/wrappers.proto" ]; then
+		WELL_KNOWN_PROTOS="$candidate"
+		break
+	fi
+done
+if [ -z "$WELL_KNOWN_PROTOS" ]; then
+	echo "Error: Could not find Google well-known proto includes (google/protobuf/wrappers.proto)"
+	exit 1
+fi
+
 protoc \
 	--plugin="protoc-gen-ts_proto=$PLUGIN" \
 	--ts_proto_out="$OUT_DIR" \
@@ -78,6 +91,7 @@ protoc \
 	--ts_proto_opt=useExactTypes=false \
 	--ts_proto_opt=forceLong=string \
 	-I="$PROTO_DIR" \
+	-I="$WELL_KNOWN_PROTOS" \
 	"$PROTO_DIR"/mpcvault/platform/v1/api.proto \
 	"$PROTO_DIR"/mpcvault/platform/v1/error.proto
 

sdk/packages/simplex/scripts/monitoring/prometheus.yml

@@ -5,4 +5,4 @@ global:
 scrape_configs:
   - job_name: "simplex"
     static_configs:
-      - targets: ["simplex:9090"]
+      - targets: ["hyperbridge-simplex:9090"]

sdk/packages/simplex/src/bin/simplex.ts

@@ -248,8 +248,8 @@ interface FillerTomlConfig {
 		pendingQueue: PendingQueueConfig
 		logging?: LoggingConfig
 		watchOnly?: boolean | Record<string, boolean>
-		substratePrivateKey?: string
-		hyperbridgeWsUrl?: string
+		substratePrivateKey: string
+		hyperbridgeWsUrl: string
 		entryPointAddress?: string
 		solverAccountContractAddress?: string
 	}
@@ -557,6 +557,14 @@ function validateConfig(config: FillerTomlConfig): void {
 		throw new Error("Signer configuration is required via [simplex.signer]")
 	}
 
+	if (!config.simplex?.substratePrivateKey) {
+		throw new Error("simplex.substratePrivateKey is required")
+	}
+
+	if (!config.simplex?.hyperbridgeWsUrl) {
+		throw new Error("simplex.hyperbridgeWsUrl is required")
+	}
+
 	if ((!config.strategies || config.strategies.length === 0) && !allChainsWatchOnly) {
 		throw new Error("At least one strategy must be configured (unless all chains are in watchOnly mode)")
 	}

sdk/packages/simplex/src/strategies/fx.ts

@@ -251,15 +251,28 @@ export class FXFiller implements FillerStrategy {
 					continue
 				}
 
+				if (policyMaxOutput < output.amount) {
+					this.logger.info(
+						{
+							orderId: order.id,
+							token: output.token,
+							policyOutput: policyMaxOutput.toString(),
+							userRequested: output.amount.toString(),
+						},
+						"Skipping order: filler price yields less than user's requested amount",
+					)
+					return 0
+				}
+
 				if (sourceChain !== destChain && finalOutputAmount < output.amount) {
 					this.logger.info(
 						{
 							orderId: order.id,
 							token: output.token,
-							fillerOutput: finalOutputAmount.toString(),
+							fillerBalance: balance.toString(),
 							userRequested: output.amount.toString(),
 						},
-						"Skipping order: filler output below user's requested minimum",
+						"Skipping cross-chain order: insufficient balance for full fill",
 					)
 					return 0
 				}