diff --git a/cue/dashboard/dashboard_go_gen.cue b/cue/dashboard/dashboard_go_gen.cue
index a082989..7652c8c 100644
--- a/cue/dashboard/dashboard_go_gen.cue
+++ b/cue/dashboard/dashboard_go_gen.cue
@@ -20,6 +20,10 @@ import plugin_9 "github.com/perses/spec/cue/plugin"
 }
 
 #PanelSpec: {
+	// Preserve unknown fields so plugins and downstream tooling can attach display-level
+	// metadata without it being pruned at admission. The declared fields above stay validated;
+	// Schemaless is intentionally not used, as that would drop their schema entirely.
+	// +kubebuilder:pruning:PreserveUnknownFields
 	display?: null | #PanelDisplay @go(Display,*PanelDisplay)
 	plugin:   plugin_9.#Plugin     @go(Plugin)
 	queries?: [...#Query] @go(Queries,[]Query)
@@ -27,7 +31,12 @@ import plugin_9 "github.com/perses/spec/cue/plugin"
 }
 
 #Panel: {
-	kind: string     @go(Kind)
+	kind: string @go(Kind)
+
+	// Preserve unknown fields so plugins and downstream tooling can attach panel-level
+	// metadata without it being pruned at admission. The declared fields stay validated;
+	// Schemaless is intentionally not used, as that would drop their schema entirely.
+	// +kubebuilder:pruning:PreserveUnknownFields
 	spec: #PanelSpec @go(Spec)
 }
 
diff --git a/go/dashboard/dashboard.go b/go/dashboard/dashboard.go
index 5929c93..f9cbab3 100644
--- a/go/dashboard/dashboard.go
+++ b/go/dashboard/dashboard.go
@@ -37,6 +37,10 @@ type PanelDisplay struct {
 }
 
 type PanelSpec struct {
+	// Preserve unknown fields so plugins and downstream tooling can attach display-level
+	// metadata without it being pruned at admission. The declared fields above stay validated;
+	// Schemaless is intentionally not used, as that would drop their schema entirely.
+	// +kubebuilder:pruning:PreserveUnknownFields
 	Display *PanelDisplay `json:"display,omitempty" yaml:"display,omitempty"`
 	Plugin  plugin.Plugin `json:"plugin" yaml:"plugin"`
 	Queries []Query       `json:"queries,omitempty" yaml:"queries,omitempty"`
@@ -44,7 +48,11 @@ type PanelSpec struct {
 }
 
 type Panel struct {
-	Kind string    `json:"kind" yaml:"kind"`
+	Kind string `json:"kind" yaml:"kind"`
+	// Preserve unknown fields so plugins and downstream tooling can attach panel-level
+	// metadata without it being pruned at admission. The declared fields stay validated;
+	// Schemaless is intentionally not used, as that would drop their schema entirely.
+	// +kubebuilder:pruning:PreserveUnknownFields
 	Spec PanelSpec `json:"spec" yaml:"spec"`
 }