ax(mining): replace prose comment with usage example on GetComponentFS

AX Principle 2: comments show HOW with real values, not WHAT the
signature already says.

Co-Authored-By: Charon <charon@lethean.io>

pkg/mining/component.go

@@ -9,8 +9,9 @@ import (
 //go:embed component/*
 var componentFS embed.FS
 
-// GetComponentFS returns the embedded file system containing the web component.
-// This allows the component to be served even when the package is used as a module.
+// fs, err := mining.GetComponentFS()
+// if err != nil { return err }
+// router.StaticFS("/component", fs)
 func GetComponentFS() (http.FileSystem, error) {
 	sub, err := fs.Sub(componentFS, "component")
 	if err != nil {