fix(cli): 增加 abs start 并修复 managed 9333 启动链路

docs/src/app/cdp-mode/page.mdx

@@ -8,6 +8,13 @@ Connect to an existing browser via Chrome DevTools Protocol:
 
 Default behavior in this fork: when `--cdp` is omitted, agent-browser targets the managed automation browser on `localhost:9333`. If `:9333` is unavailable, it auto-starts Chrome with the persistent profile `~/.agent-browser/chrome-bot-profile` and retries the CDP connection.
 
+If you want to pre-start that managed browser explicitly, run:
+
+```bash
+agent-browser start
+abs start
+```
+
 Project policy:
 
 - `--profile` / `AGENT_BROWSER_PROFILE` are forbidden

docs/src/app/commands/page.mdx

@@ -9,6 +9,7 @@ Executable aliases: `agent-browser`, `agent-browser-stealth`, `abs`.
 ## Core
 
 ```bash
+agent-browser start                   # Start/reuse managed browser on localhost:9333
 agent-browser open <url>              # Navigate (aliases: goto, navigate)
 agent-browser --risk-mode block open <url>  # Block when verification/captcha interstitial is detected
 agent-browser click <sel>             # Click element (--new-tab to open in new tab)