fix: resolve lint issues in server and dashboard

- Add ReadHeaderTimeout to http.Server to satisfy gosec G114
- Add explicit void return types to arrow functions in mcp-client.ts

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: JAORMX

cmd/minder-mcp/main.go

@@ -86,7 +86,13 @@ func main() {
 	addr := fmt.Sprintf(":%d", cfg.MCP.Port)
 	slog.Info("Starting Minder MCP server", "addr", addr, "endpoint", cfg.MCP.EndpointPath)
 
-	if err := http.ListenAndServe(addr, corsHandler); err != nil {
+	srv := &http.Server{
+		Addr:              addr,
+		Handler:           corsHandler,
+		ReadHeaderTimeout: 10 * time.Second,
+	}
+
+	if err := srv.ListenAndServe(); err != nil {
 		slog.Error("Failed to start server", "error", err)
 		os.Exit(1)
 	}

ui/compliance-dashboard/src/mcp-client.ts

@@ -64,7 +64,7 @@ export class MCPAppsClient {
    */
   onToolResult(callback: ToolResultCallback): void {
     this.onToolResultCallback = callback;
-    this.app.ontoolresult = (result) => {
+    this.app.ontoolresult = (result): void => {
       console.log('[MCP] Received tool result notification:', result);
       if (this.onToolResultCallback) {
         this.onToolResultCallback(result);
@@ -78,7 +78,7 @@ export class MCPAppsClient {
    */
   onToolInput(callback: ToolInputCallback): void {
     this.onToolInputCallback = callback;
-    this.app.ontoolinput = (input) => {
+    this.app.ontoolinput = (input): void => {
       console.log('[MCP] Received tool input notification:', input);
       if (this.onToolInputCallback) {
         this.onToolInputCallback(input);
@@ -92,7 +92,7 @@ export class MCPAppsClient {
    */
   onDimensionsChange(callback: DimensionsCallback): void {
     this.onDimensionsCallback = callback;
-    this.app.onhostcontextchanged = (context) => {
+    this.app.onhostcontextchanged = (context): void => {
       console.log('[MCP] Received host context change:', context);
       if (context.containerDimensions && this.onDimensionsCallback) {
         const dims = context.containerDimensions as ContainerDimensions;