fix(orchestrator): reuse src connection to list folders instead of extra TestLogin

internal/imapx/account.go

@@ -2,8 +2,23 @@ package imapx
 
 import (
 	"context"
+
+	"github.com/emersion/go-imap/v2/imapclient"
 )
 
+// ListFolders returns the mailbox names visible on an already-connected, logged-in client.
+func ListFolders(c *imapclient.Client) ([]string, error) {
+	mboxes, err := c.List("", "*", nil).Collect()
+	if err != nil {
+		return nil, err
+	}
+	names := make([]string, 0, len(mboxes))
+	for _, m := range mboxes {
+		names = append(names, m.Mailbox)
+	}
+	return names, nil
+}
+
 func TestLogin(ctx context.Context, ep Endpoint, login, pass string) ([]string, error) {
 	c, err := Connect(ctx, ep)
 	if err != nil {

internal/orchestrator/orchestrator.go

@@ -174,7 +174,7 @@ func (o *Orchestrator) runAccount(ctx context.Context, task store.Task, runID in
 		return o.accountFailed(ctx, task.ID, a.ID, err)
 	}
 
-	folders, err := imapx.TestLogin(ctx, srcEP, a.SrcLogin, string(srcPass))
+	folders, err := imapx.ListFolders(src)
 	if err != nil {
 		return o.accountFailed(ctx, task.ID, a.ID, err)
 	}