Update 8 - LowPowerMode + Bugfixes

internal/engine/article.go

@@ -1457,7 +1457,15 @@ func metadataString(metadata map[string]any, key string) string {
 	if metadata == nil {
 		return ""
 	}
-	return strings.TrimSpace(fmt.Sprint(metadata[key]))
+	value, ok := metadata[key]
+	if !ok || value == nil {
+		return ""
+	}
+	text := strings.TrimSpace(fmt.Sprint(value))
+	if text == "" || strings.EqualFold(text, "<nil>") || strings.EqualFold(text, "null") {
+		return ""
+	}
+	return text
 }
 
 func metadataStringSlice(metadata map[string]any, key string) []string {

internal/engine/article_research_cache_test.go

@@ -89,3 +89,21 @@ func TestLoadResearchEvidenceCanReuseInMemoryQueuedRecord(t *testing.T) {
 		t.Fatalf("unexpected cached evidence: %+v", loaded)
 	}
 }
+
+func TestMetadataStringTreatsMissingAndNilAsEmpty(t *testing.T) {
+	cases := []map[string]any{
+		nil,
+		{},
+		{"evidence_path": nil},
+		{"evidence_path": "<nil>"},
+		{"evidence_path": "null"},
+	}
+	for _, metadata := range cases {
+		if got := metadataString(metadata, "evidence_path"); got != "" {
+			t.Fatalf("expected empty metadata string, got %q from %#v", got, metadata)
+		}
+	}
+	if got := metadataString(map[string]any{"evidence_path": " research-evidence/x.json "}, "evidence_path"); got != "research-evidence/x.json" {
+		t.Fatalf("unexpected normalized metadata string %q", got)
+	}
+}

internal/engine/engine_test.go

@@ -392,13 +392,14 @@ func TestRuntimeSettingsDisableThinkingAndPersist(t *testing.T) {
 		LearningCategories: []string{"Netzwerk"},
 		DisplayCategories:  []string{"GLPI KB"},
 		ThinkingCategories: []string{"Netzwerk"},
-		ViewMode:           "honeycomb",
+		ViewMode:           "constellation",
 		MaxDisplayNodes:    4321,
+		LowPowerMode:       true,
 	})
 	if err != nil {
 		t.Fatal(err)
 	}
-	if updated.LearningEnabled || updated.ThinkingEnabled || updated.ViewMode != "honeycomb" || updated.MaxDisplayNodes != 4321 {
+	if updated.LearningEnabled || updated.ThinkingEnabled || updated.ViewMode != "constellation" || updated.MaxDisplayNodes != 4321 || !updated.LowPowerMode {
 		t.Fatalf("unexpected runtime settings: %+v", updated)
 	}
 	if e.RequestEnrich("manual") {
@@ -417,7 +418,7 @@ func TestRuntimeSettingsDisableThinkingAndPersist(t *testing.T) {
 	}
 	e2 := New(cfg, g2, activity.New(20))
 	loaded := e2.RuntimeSettings()
-	if loaded.LearningEnabled || loaded.ThinkingEnabled || loaded.ViewMode != "honeycomb" || loaded.MaxDisplayNodes != 4321 || len(loaded.DisplayCategories) != 1 {
+	if loaded.LearningEnabled || loaded.ThinkingEnabled || loaded.ViewMode != "constellation" || loaded.MaxDisplayNodes != 4321 || !loaded.LowPowerMode || len(loaded.DisplayCategories) != 1 {
 		t.Fatalf("runtime settings were not restored: %+v", loaded)
 	}
 }

internal/engine/runtime.go

@@ -20,6 +20,7 @@ type RuntimeSettings struct {
 	ThinkingCategories []string `json:"thinking_categories"`
 	ViewMode           string   `json:"view_mode"`
 	MaxDisplayNodes    int      `json:"max_display_nodes"`
+	LowPowerMode       bool     `json:"low_power_mode"`
 }
 
 type CategoryInfo struct {
@@ -36,6 +37,7 @@ func (e *Engine) defaultRuntimeSettings() RuntimeSettings {
 		ThinkingCategories: append([]string(nil), e.Cfg.ThinkingCategories...),
 		ViewMode:           e.Cfg.DefaultView,
 		MaxDisplayNodes:    e.Cfg.MaxDisplayNodes,
+		LowPowerMode:       e.Cfg.LowPowerMode,
 	})
 }
 
@@ -47,7 +49,7 @@ func normalizeRuntimeSettings(in RuntimeSettings) RuntimeSettings {
 	if in.ViewMode == "" {
 		in.ViewMode = "neural"
 	}
-	if in.ViewMode != "neural" && in.ViewMode != "honeycomb" {
+	if in.ViewMode != "neural" && in.ViewMode != "honeycomb" && in.ViewMode != "constellation" {
 		in.ViewMode = "neural"
 	}
 	if in.MaxDisplayNodes < 0 {
@@ -149,6 +151,7 @@ func (e *Engine) SetRuntimeSettings(settings RuntimeSettings) (RuntimeSettings,
 			"thinking_categories": len(settings.ThinkingCategories),
 			"view_mode":           settings.ViewMode,
 			"max_display_nodes":   settings.MaxDisplayNodes,
+			"low_power_mode":      settings.LowPowerMode,
 		},
 	})
 	return settings, nil