fix docs (#223)

* fix: download artifacts to temp directory to avoid naming conflict

The download-artifact action creates directories named after each artifact.
When downloading to bin/, this caused conflicts because the artifact directory
names matched the binary names (e.g., bin/agent-browser-darwin-arm64/agent-browser-darwin-arm64).

Fix by downloading to artifacts/ first, then using find to move the binaries to bin/.

* fix docs

skills/agent-browser/SKILL.md

@@ -225,6 +225,7 @@ agent-browser --json ...              # JSON output for parsing
 agent-browser --headed ...            # Show browser window (not headless)
 agent-browser --full ...              # Full page screenshot (-f)
 agent-browser --cdp <port> ...        # Connect via Chrome DevTools Protocol
+agent-browser -p <provider> ...       # Cloud browser provider (--provider)
 agent-browser --proxy <url> ...       # Use proxy server
 agent-browser --headers <json> ...    # HTTP headers scoped to URL's origin
 agent-browser --executable-path <p>   # Custom browser executable
@@ -248,6 +249,7 @@ agent-browser --proxy socks5://proxy.com:1080 open example.com
 AGENT_BROWSER_SESSION="mysession"            # Default session name
 AGENT_BROWSER_EXECUTABLE_PATH="/path/chrome" # Custom browser path
 AGENT_BROWSER_EXTENSIONS="/ext1,/ext2"       # Comma-separated extension paths
+AGENT_BROWSER_PROVIDER="browserbase"         # Cloud browser provider
 AGENT_BROWSER_STREAM_PORT="9223"             # WebSocket streaming port
 AGENT_BROWSER_HOME="/path/to/agent-browser"  # Custom install location (for daemon.js)
 ```