feat: add screenshot output config, clipboard CLI commands, and fix wait --text native path (#749)

* feat: add screenshot output config, clipboard CLI commands, and fix wait --text native path

## Summary

- Add `--screenshot-dir`, `--screenshot-quality`, and `--screenshot-format` CLI flags (with corresponding `AGENT_BROWSER_SCREENSHOT_DIR`, `AGENT_BROWSER_SCREENSHOT_QUALITY`, `AGENT_BROWSER_SCREENSHOT_FORMAT` env vars) so users can configure where and how screenshots are saved without specifying a full path every time
- Add `clipboard read`, `clipboard write <text>`, `clipboard copy`, and `clipboard paste` CLI commands, exposing the existing protocol-level clipboard handlers that were previously only accessible via JSON-RPC
- Fix `wait --text` in native mode: the CLI was emitting `selector: "text=..."` (a Playwright-style locator) which native's `querySelector` can't handle. Now emits a `text` field that correctly hits the native `wait_for_text` polling path
- Add native clipboard `copy` and `paste` support via CDP `Input.dispatchKeyEvent`, and a `write` operation to the Node.js handler

* fix: resolve CI failures in Rust formatting and TypeScript typecheck

Use string-based page.evaluate for clipboard writeText to avoid
referencing `navigator` in Node.js compilation context. Run cargo fmt
to fix formatting in commands.rs and screenshot.rs.

* fix: clipboard write captures full multi-word text

Use rest[1..].join(" ") instead of rest.get(1) so unquoted multi-word
input like `clipboard write hello world` sends the full string rather
than silently dropping everything after the first word.

* improvements

* fixes

* improvements

* improvements

docs/src/app/commands/page.mdx

@@ -28,6 +28,8 @@ agent-browser drag <src> <dst>        # Drag and drop
 agent-browser upload <sel> <files>    # Upload files
 agent-browser screenshot [path]       # Screenshot (--full for full page)
 agent-browser screenshot --annotate   # Annotated screenshot with numbered element labels
+agent-browser screenshot --screenshot-dir ./shots    # Save to custom directory
+agent-browser screenshot --screenshot-format jpeg --screenshot-quality 80
 agent-browser pdf <path>              # Save page as PDF
 agent-browser snapshot                # Accessibility tree with refs
 agent-browser eval <js>               # Run JavaScript
@@ -96,11 +98,13 @@ agent-browser find nth 2 ".card" hover
 ```bash
 agent-browser wait <selector>         # Wait for element
 agent-browser wait <ms>               # Wait for time
-agent-browser wait --text "Welcome"   # Wait for text
+agent-browser wait --text "Welcome"   # Wait for text (substring match)
 agent-browser wait --url "**/dash"    # Wait for URL pattern
 agent-browser wait --load networkidle # Wait for load state
 agent-browser wait --fn "condition"   # Wait for JS condition
 agent-browser wait --download [path]  # Wait for download
+agent-browser wait --fn "!document.body.innerText.includes('Loading...')"  # Wait for text to disappear
+agent-browser wait "#spinner" --state hidden           # Wait for element to disappear
 ```
 
 ## Downloads
@@ -121,6 +125,15 @@ agent-browser mouse up [button]       # Release button
 agent-browser mouse wheel <dy> [dx]   # Scroll wheel
 ```
 
+## Clipboard
+
+```bash
+agent-browser clipboard read                      # Read text from clipboard
+agent-browser clipboard write "Hello, World!"     # Write text to clipboard
+agent-browser clipboard copy                      # Copy current selection (Ctrl+C)
+agent-browser clipboard paste                     # Paste from clipboard (Ctrl+V)
+```
+
 ## Settings
 
 ```bash
@@ -295,6 +308,9 @@ agent-browser reload                  # Reload page
 --json                   # JSON output (for scripts)
 --full, -f               # Full page screenshot
 --annotate               # Annotated screenshot with numbered element labels
+--screenshot-dir <path>   # Default screenshot output directory (or AGENT_BROWSER_SCREENSHOT_DIR)
+--screenshot-quality <n>  # JPEG quality 0-100 (or AGENT_BROWSER_SCREENSHOT_QUALITY)
+--screenshot-format <fmt> # Format: png (default), jpeg (or AGENT_BROWSER_SCREENSHOT_FORMAT)
 --headed                 # Show browser window (not headless)
 --cdp <port|url>         # Connect via Chrome DevTools Protocol (port or WebSocket URL)
 --auto-connect           # Auto-discover and connect to running Chrome