feat: add browser automation commands (v0.6.0)

Navigation: open-wait (open + block until loaded)
DOM: key, hover, check/uncheck, clear, focus, submit, poll, scroll, select, eval, wait-for
Tabs: pin/unpin, screenshot, watch-url (block until URL matches regex)
New command groups: page info, storage get/set, cookies list/get/set
Extension: add cookies permission

browser_cli/commands/navigate.py

@@ -78,3 +78,29 @@ def cmd_focus(pattern):
         console.print(f"[green]Focused:[/green] {result.get('url', result)}")
     else:
         console.print(f"[yellow]No tab found matching:[/yellow] {pattern}")
+
+
+@nav_group.command("open-wait")
+@click.argument("url")
+@click.option("--timeout", type=float, default=30.0, show_default=True, help="Max seconds to wait for load")
+@click.option("--bg", is_flag=True, help="Open in background (no focus)")
+@click.option("--window", "window_name", default=None, help="Open in named window")
+@click.option("--group", "group_name", default=None, help="Open in tab group")
+def cmd_open_wait(url, timeout, bg, window_name, group_name):
+    """Open URL in a new tab and wait until fully loaded."""
+    result = _handle("navigate.open_wait", {
+        "url": url, "timeout": int(timeout * 1000),
+        "background": bg, "window": window_name, "group": group_name,
+    })
+    title = result.get("title", "") if isinstance(result, dict) else ""
+    console.print(f"[green]Loaded:[/green] {url}" + (f" — {title}" if title else ""))
+
+
+@nav_group.command("wait")
+@click.option("--tab", "tab_id", type=int, default=None, help="Tab ID (default: active tab)")
+@click.option("--timeout", type=float, default=30.0, show_default=True, help="Max seconds to wait")
+@click.option("--ready-state", type=click.Choice(["complete", "interactive"]), default="complete", show_default=True, help="Target ready state")
+def cmd_wait(tab_id, timeout, ready_state):
+    """Wait until tab finishes loading."""
+    result = _handle("navigate.wait", {"tabId": tab_id, "timeout": int(timeout * 1000), "readyState": ready_state})
+    console.print(f"[green]Ready:[/green] {result.get('url', '')} — {result.get('title', '')}")