perf(statusline): use shared minimal client, drop net/http

cmd/hooks/statusline/main.go

@@ -3,9 +3,9 @@
 package main
 
 import (
+	"context"
 	"encoding/json"
 	"fmt"
-	"net/http"
 	"net/url"
 	"os"
 	"time"
@@ -13,6 +13,9 @@ import (
 	"github.com/lukaszraczylo/claude-mnemonic/pkg/hooks"
 )
 
+// statsTimeout bounds the worker stats request.
+const statsTimeout = 100 * time.Millisecond
+
 // StatusInput is the JSON input from Claude Code's statusline feature.
 type StatusInput struct {
 	HookEventName string `json:"hook_event_name"`
@@ -105,26 +108,19 @@ func handleStatusline(input *StatusInput, port int) string {
 // getWorkerStats fetches stats from the worker service.
 func getWorkerStats(port int, project string) *WorkerStats {
 	// Build URL with optional project parameter
-	endpoint := fmt.Sprintf("http://127.0.0.1:%d/api/stats", port)
+	endpoint := "/api/stats"
 	if project != "" {
 		endpoint += "?project=" + url.QueryEscape(project)
 	}
 
-	// Create HTTP client with short timeout (statusline must be fast)
+	// Short timeout: statusline must be fast
-	client := &http.Client{Timeout: 100 * time.Millisecond}
+	body, err := hooks.GETBody(context.Background(), statsTimeout, port, endpoint)
-
-	resp, err := client.Get(endpoint)
 	if err != nil {
 		return nil
 	}
-	defer func() { _ = resp.Body.Close() }()
-
-	if resp.StatusCode != http.StatusOK {
-		return nil
-	}
 
 	var stats WorkerStats
-	if err := json.NewDecoder(resp.Body).Decode(&stats); err != nil {
+	if err := json.Unmarshal(body, &stats); err != nil {
 		return nil
 	}
 

pkg/hooks/httpclient.go

@@ -79,3 +79,16 @@ func parseHTTPResponse(raw []byte) (*httpResponse, error) {
 	}
 	return &httpResponse{Status: code, StatusText: rest, Body: body}, nil
 }
+
+// GETBody fetches path from the worker within timeout and returns the raw body.
+// Statuses of 400 and above are returned as errors.
+func GETBody(ctx context.Context, timeout time.Duration, port int, path string) ([]byte, error) {
+	resp, err := httpDo(ctx, timeout, "GET", port, path, nil)
+	if err != nil {
+		return nil, err
+	}
+	if resp.Status >= 400 {
+		return nil, fmt.Errorf("request failed: %s", resp.StatusText)
+	}
+	return resp.Body, nil
+}