Update 2+3

internal/engine/runtime.go

@@ -2,6 +2,7 @@ package engine
 
 import (
 	"encoding/json"
+	"fmt"
 	"os"
 	"sort"
 	"strings"
@@ -18,6 +19,7 @@ type RuntimeSettings struct {
 	DisplayCategories  []string `json:"display_categories"`
 	ThinkingCategories []string `json:"thinking_categories"`
 	ViewMode           string   `json:"view_mode"`
+	MaxDisplayNodes    int      `json:"max_display_nodes"`
 }
 
 type CategoryInfo struct {
@@ -33,6 +35,7 @@ func (e *Engine) defaultRuntimeSettings() RuntimeSettings {
 		DisplayCategories:  append([]string(nil), e.Cfg.DisplayCategories...),
 		ThinkingCategories: append([]string(nil), e.Cfg.ThinkingCategories...),
 		ViewMode:           e.Cfg.DefaultView,
+		MaxDisplayNodes:    e.Cfg.MaxDisplayNodes,
 	})
 }
 
@@ -47,6 +50,12 @@ func normalizeRuntimeSettings(in RuntimeSettings) RuntimeSettings {
 	if in.ViewMode != "neural" && in.ViewMode != "honeycomb" {
 		in.ViewMode = "neural"
 	}
+	if in.MaxDisplayNodes < 0 {
+		in.MaxDisplayNodes = 0
+	}
+	if in.MaxDisplayNodes > 500000 {
+		in.MaxDisplayNodes = 500000
+	}
 	return in
 }
 
@@ -96,6 +105,9 @@ func (e *Engine) RuntimeSettings() RuntimeSettings {
 }
 
 func (e *Engine) SetRuntimeSettings(settings RuntimeSettings) (RuntimeSettings, error) {
+	if settings.MaxDisplayNodes < 0 || settings.MaxDisplayNodes > 500000 {
+		return e.RuntimeSettings(), fmt.Errorf("max_display_nodes must be between 0 and 500000")
+	}
 	settings = normalizeRuntimeSettings(settings)
 	e.runtimeMu.Lock()
 	previous := e.runtime
@@ -136,6 +148,7 @@ func (e *Engine) SetRuntimeSettings(settings RuntimeSettings) (RuntimeSettings,
 			"display_categories":  len(settings.DisplayCategories),
 			"thinking_categories": len(settings.ThinkingCategories),
 			"view_mode":           settings.ViewMode,
+			"max_display_nodes":   settings.MaxDisplayNodes,
 		},
 	})
 	return settings, nil