Compile effective flag aliases during installation

app.go

@@ -10,11 +10,13 @@ import (
 // App owns one command registry and its application identity. Each App has an
 // independent registry; command declarations may be reused across Apps.
 type App struct {
-	identity     Identity
-	commands     map[string]*commandNode
-	routingRules []RoutingRule
-	aliases      *alias.Resolver
-	snapshot     *routingSnapshot
+	identity       Identity
+	commands       map[string]*commandNode
+	routingRules   []RoutingRule
+	aliases        *alias.Resolver
+	flagAliases    map[string]resolvedFlagAliases
+	discoveryFlags map[string]resolvedFlagAliases
+	snapshot       *routingSnapshot
 }
 
 type routingSnapshot struct {