fix(httpclient): replace DefaultClient with timed clients and retry

Пакет httpclient: timeout 45s, idle pool, DoWithRetry. Scheduler и nodecli
используют retry; pipeline/asnresolve/jobs — httpclient.New вместо DefaultClient.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/scheduler/run.go

@@ -14,6 +14,7 @@ import (
 
 	"evobgp/internal/broker"
 	"evobgp/internal/config"
+	"evobgp/internal/httpclient"
 	"evobgp/internal/jobs"
 	"evobgp/internal/pipeline"
 	"evobgp/internal/store"
@@ -108,6 +109,9 @@ func postTenantRefresh(ctx context.Context, deps *Deps, moduleIDs []string, idem
 	if err != nil {
 		return err
 	}
+	req.GetBody = func() (io.ReadCloser, error) {
+		return io.NopCloser(bytes.NewReader(body)), nil
+	}
 	req.Header.Set("Authorization", "Bearer "+strings.TrimSpace(deps.APIToken))
 	req.Header.Set("Content-Type", "application/json")
 	if idempotencyKey != "" {
@@ -115,9 +119,9 @@ func postTenantRefresh(ctx context.Context, deps *Deps, moduleIDs []string, idem
 	}
 	hc := deps.HTTP
 	if hc == nil {
-		hc = http.DefaultClient
+		hc = httpclient.New(httpclient.DefaultTimeout)
 	}
-	resp, err := hc.Do(req)
+	resp, err := httpclient.DoWithRetry(ctx, hc, req, 3)
 	if err != nil {
 		return err
 	}