feat: dashboard provider support and session creation improvements (#1092)

Add provider icons and session creation from the dashboard UI.
Sessions can now be created with cloud providers (Browserbase,
Browserless, Browser Use, Kernel) in addition to local engines.

CLI changes:
- Track provider via .provider files alongside .engine files
- Add WaitUntil::None variant to skip lifecycle event waits for providers
- Auto-set waitUntil=none when --provider is used with navigate
- Fix Browser Use: use direct WSS connection (wss://connect.browser-use.com)
- Add connect_cdp_direct for providers with page-level CDP proxies
- Fix resolve_cdp_url to convert https:// provider URLs to wss://
- Treat empty CDP session_id as None (omit from protocol messages)
- Fix Browserbase: send explicit JSON body + Content-Type header
- Increase CDP connect timeout to 25s for remote providers
- Clean up .provider files on session close

Dashboard changes:
- Show provider or engine icon per session in sidebar
- New session dialog with unified engine/provider selector grid
- Async session creation with loading state and error display
- Kill zombie daemons on provider connection failure
- Parse CLI JSON error output for user-friendly messages
- Default new session URL to https://agent-browser.dev

docs/src/app/api/docs-chat/route.ts

@@ -12,7 +12,7 @@ export const maxDuration = 60;
 
 const DEFAULT_MODEL = "anthropic/claude-haiku-4.5";
 
-const SYSTEM_PROMPT = `You are a helpful documentation assistant for agent-browser, a headless browser automation CLI designed for AI agents.
+const SYSTEM_PROMPT = `You are a helpful documentation assistant for agent-browser, a browser automation CLI designed for AI agents.
 
 GitHub repository: https://github.com/vercel-labs/agent-browser
 Documentation: https://agent-browser.dev

docs/src/app/layout.tsx

@@ -25,23 +25,23 @@ const geistMono = Geist_Mono({
 export const metadata: Metadata = {
   metadataBase: new URL("https://agent-browser.dev"),
   title: {
-    default: "agent-browser | Headless Browser Automation for AI",
+    default: "agent-browser | Browser Automation for AI",
     template: "%s | agent-browser",
   },
-  description: "Headless browser automation CLI for AI agents",
+  description: "Browser automation CLI for AI agents",
   openGraph: {
     type: "website",
     locale: "en_US",
     url: "https://agent-browser.dev",
     siteName: "agent-browser",
-    title: "agent-browser | Headless Browser Automation for AI",
-    description: "Headless browser automation CLI for AI agents",
+    title: "agent-browser | Browser Automation for AI",
+    description: "Browser automation CLI for AI agents",
     images: [{ url: "/og", width: 1200, height: 630, alt: "agent-browser" }],
   },
   twitter: {
     card: "summary_large_image",
-    title: "agent-browser | Headless Browser Automation for AI",
-    description: "Headless browser automation CLI for AI agents",
+    title: "agent-browser | Browser Automation for AI",
+    description: "Browser automation CLI for AI agents",
     images: ["/og"],
   },
 };

docs/src/lib/page-metadata.ts

@@ -2,7 +2,7 @@ import type { Metadata } from "next";
 import { PAGE_TITLES } from "./page-titles";
 
 const DESCRIPTION =
-  "Headless browser automation CLI for AI agents";
+  "Browser automation CLI for AI agents";
 
 export function pageMetadata(slug: string): Metadata {
   const title = PAGE_TITLES[slug];

docs/src/lib/page-titles.ts

@@ -1,5 +1,5 @@
 export const PAGE_TITLES: Record<string, string> = {
-  "": "Headless Browser\nAutomation for AI",
+  "": "Browser\nAutomation for AI",
   installation: "Installation",
   "quick-start": "Quick Start",
   skills: "Skills",