Fix errcheck: handle Close() return values in defer

Wrap all defer Close() calls with anonymous functions to
properly ignore the return value and satisfy errcheck linter.

Author: Siddhant-K-code

cmd/analyze.go

@@ -122,7 +122,7 @@ func loadVectorsFromFile(filePath string) ([]types.Vector, error) {
 	if err != nil {
 		return nil, err
 	}
-	defer file.Close()
+	defer func() { _ = file.Close() }()
 
 	var vectors []types.Vector
 	scanner := bufio.NewScanner(file)

cmd/mcp.go

@@ -196,15 +196,15 @@ func runMCP(cmd *cobra.Command, args []string) error {
 		if err != nil {
 			return fmt.Errorf("failed to create retriever: %w", err)
 		}
-		defer ret.Close()
+		defer func() { _ = ret.Close() }()
 
 		// Create broker with retriever
 		if mcpSrv.embedder != nil {
 			mcpSrv.broker = contextlab.NewBrokerWithEmbedder(ret, mcpSrv.embedder, brokerCfg)
 		} else {
 			mcpSrv.broker = contextlab.NewBroker(ret, brokerCfg)
 		}
-		defer mcpSrv.broker.Close()
+		defer func() { _ = mcpSrv.broker.Close() }()
 	}
 
 	// Create MCP server with capabilities

cmd/query.go

@@ -148,7 +148,7 @@ func runQuery(cmd *cobra.Command, args []string) error {
 	if err != nil {
 		return fmt.Errorf("failed to create retriever: %w", err)
 	}
-	defer ret.Close()
+	defer func() { _ = ret.Close() }()
 
 	// Create embedding provider
 	embedder, err := openai.NewClient(openai.Config{
@@ -212,7 +212,7 @@ func runQuery(cmd *cobra.Command, args []string) error {
 		}
 
 		broker := contextlab.NewBrokerWithEmbedder(ret, embedder, brokerCfg)
-		defer broker.Close()
+		defer func() { _ = broker.Close() }()
 
 		req := &types.RetrievalRequest{
 			QueryEmbedding: embedding,

cmd/serve.go

@@ -186,7 +186,7 @@ func runServe(cmd *cobra.Command, args []string) error {
 	if err != nil {
 		return fmt.Errorf("failed to create retriever: %w", err)
 	}
-	defer ret.Close()
+	defer func() { _ = ret.Close() }()
 
 	// Create embedding provider if OpenAI key is provided
 	var embedder retriever.EmbeddingProvider
@@ -218,7 +218,7 @@ func runServe(cmd *cobra.Command, args []string) error {
 	} else {
 		broker = contextlab.NewBroker(ret, brokerCfg)
 	}
-	defer broker.Close()
+	defer func() { _ = broker.Close() }()
 
 	// Create server
 	server := &Server{

cmd/sync.go

@@ -155,7 +155,7 @@ func runSync(cmd *cobra.Command, args []string) error {
 	if err != nil {
 		return fmt.Errorf("failed to connect to Pinecone: %w", err)
 	}
-	defer client.Close()
+	defer func() { _ = client.Close() }()
 
 	// Create ingestion pipeline
 	ingestCfg := ingest.Config{

pkg/embedding/openai/client.go

@@ -225,7 +225,7 @@ func (c *Client) doRequest(ctx context.Context, body []byte) (*embeddingResponse
 	if err != nil {
 		return nil, fmt.Errorf("request failed: %w", err)
 	}
-	defer resp.Body.Close()
+	defer func() { _ = resp.Body.Close() }()
 
 	respBody, err := io.ReadAll(resp.Body)
 	if err != nil {

pkg/ingest/pipeline.go

@@ -99,7 +99,7 @@ func (p *Pipeline) IngestFile(ctx context.Context, filePath string, progress Pro
 	if err != nil {
 		return nil, fmt.Errorf("failed to open file: %w", err)
 	}
-	defer file.Close()
+	defer func() { _ = file.Close() }()
 
 	return p.IngestReader(ctx, file, progress)
 }