diff --git a/embeddings/provider.go b/embeddings/provider.go
index ccece80..6147932 100644
--- a/embeddings/provider.go
+++ b/embeddings/provider.go
@@ -19,8 +19,10 @@ import (
 var httpClient = &http.Client{Timeout: 30 * time.Second}
 
 // Endpoint URLs are package-level vars so tests can override them with httptest servers.
-var openAIEndpoint = "https://api.openai.com/v1/embeddings"
-var voyageEndpoint = "https://api.voyageai.com/v1/embeddings"
+var (
+	openAIEndpoint = "https://api.openai.com/v1/embeddings"
+	voyageEndpoint = "https://api.voyageai.com/v1/embeddings"
+)
 
 // maxRetries is the maximum number of rate-limit retries before giving up.
 const maxRetries = 5
diff --git a/portablegraph/portable_graph.go b/portablegraph/portable_graph.go
index 4bc7a92..c8c51f0 100644
--- a/portablegraph/portable_graph.go
+++ b/portablegraph/portable_graph.go
@@ -23,23 +23,23 @@ type PortableNode struct {
 
 // PortableEdge represents a portable graph edge.
 type PortableEdge struct {
-	ID       string  `json:"id"`
-	From     string  `json:"from"`
-	To       string  `json:"to"`
-	Kind     string  `json:"kind"`   // "depends_on", "produced", "references"
-	Weight   float64 `json:"weight"`
-	Attrs    map[string]interface{} `json:"attrs,omitempty"`
-	CreatedAt time.Time `json:"created_at"`
+	ID        string                 `json:"id"`
+	From      string                 `json:"from"`
+	To        string                 `json:"to"`
+	Kind      string                 `json:"kind"` // "depends_on", "produced", "references"
+	Weight    float64                `json:"weight"`
+	Attrs     map[string]interface{} `json:"attrs,omitempty"`
+	CreatedAt time.Time              `json:"created_at"`
 }
 
 // PortableGraph represents a portable, serializable graph.
 type PortableGraph struct {
 	mu    sync.RWMutex
-	ID    string           `json:"id"`
-	Name  string           `json:"name"`
+	ID    string                   `json:"id"`
+	Name  string                   `json:"name"`
 	Nodes map[string]*PortableNode `json:"nodes"`
-	Edges []PortableEdge   `json:"edges"`
-	Attrs map[string]interface{} `json:"attrs,omitempty"`
+	Edges []PortableEdge           `json:"edges"`
+	Attrs map[string]interface{}   `json:"attrs,omitempty"`
 }
 
 // NewPortableGraph creates a new portable graph.
@@ -146,10 +146,10 @@ func (g *PortableGraph) ToGraphSpec() *graphcontracts.GraphSpec {
 	}
 
 	return &graphcontracts.GraphSpec{
-		ID:     g.ID,
-		Name:   g.Name,
-		Nodes:  nodes,
-		Edges:  edges,
+		ID:    g.ID,
+		Name:  g.Name,
+		Nodes: nodes,
+		Edges: edges,
 	}
 }