feat: add Pool column to browsers list

Show pool_id in the browser list table for browsers acquired from a
pool. Extracts pool_id from SDK ExtraFields until the SDK is regenerated
with the new field.

Related: kernel/kernel#1286
Co-authored-by: Cursor <cursoragent@cursor.com>

Author: masnwilliams

cmd/browsers.go

@@ -278,7 +278,7 @@ func (b BrowsersCmd) List(ctx context.Context, in BrowsersListInput) error {
 	}
 
 	// Prepare table data
-	headers := []string{"Browser ID", "Created At", "Persistent ID", "Profile", "CDP WS URL", "Live View URL"}
+	headers := []string{"Browser ID", "Created At", "Persistent ID", "Profile", "Pool", "CDP WS URL", "Live View URL"}
 	showDeletedAt := in.IncludeDeleted || in.Status == "deleted" || in.Status == "all"
 	if showDeletedAt {
 		headers = append(headers, "Deleted At")
@@ -298,11 +298,17 @@ func (b BrowsersCmd) List(ctx context.Context, in BrowsersListInput) error {
 			profile = browser.Profile.ID
 		}
 
+		poolID := "-"
+		if f, ok := browser.JSON.ExtraFields["pool_id"]; ok && f.Raw() != "" && f.Raw() != "null" {
+			poolID = strings.Trim(f.Raw(), `"`)
+		}
+
 		row := []string{
 			browser.SessionID,
 			util.FormatLocal(browser.CreatedAt),
 			persistentID,
 			profile,
+			poolID,
 			truncateURL(browser.CdpWsURL, 50),
 			truncateURL(browser.BrowserLiveViewURL, 50),
 		}