feat(cli): emit Page.lifecycleEvent in browse cdp

.changeset/cdp-lifecycle-events.md

@@ -0,0 +1,5 @@
+---
+"@browserbasehq/browse-cli": patch
+---
+
+`browse cdp` now also calls `Page.setLifecycleEventsEnabled` whenever the Page domain is enabled, so consumers receive `Page.lifecycleEvent` notifications (`init`, `commit`, `DOMContentLoaded`, `load`, `firstPaint`, `firstContentfulPaint`, `networkAlmostIdle`, `networkIdle`, etc.) in addition to `Page.frameNavigated`. `--pretty` mode formats lifecycle events with the milestone name. No effect on consumers that pass `--domain` without `Page`.

packages/cli/src/index.ts

@@ -2754,6 +2754,18 @@ program
           } else {
             sendCDP(ws, `${domain}.enable`, {}, sessionId);
           }
+
+          // Page.enable does not emit Page.lifecycleEvent on its own; it requires
+          // a separate opt-in. Enable it so consumers see DOMContentLoaded, load,
+          // firstPaint, networkIdle, etc.
+          if (domain === "Page") {
+            sendCDP(
+              ws,
+              "Page.setLifecycleEventsEnabled",
+              { enabled: true },
+              sessionId,
+            );
+          }
         }
       }
 
@@ -2822,6 +2834,11 @@ program
               if (url) line += ` ${url}`;
               break;
             }
+            case "Page.lifecycleEvent": {
+              const name = (params?.name as string) ?? "";
+              if (name) line += ` ${name}`;
+              break;
+            }
             case "Target.attachedToTarget": {
               const info = params?.targetInfo as
                 | { type?: string; url?: string }