feat(ocr): add /ocr endpoint for screen, region, and image input

README.md

@@ -7,6 +7,7 @@ Let an Agent interact with your computer over HTTP, with grid-aware screenshots
 - **Visual endpoints**: full-screen capture with optional grid overlay and labeled cells (`asImage=true` can return raw image bytes)
 - **Zoom endpoint**: crop around a point with denser grid for fine targeting (`asImage=true` supported)
 - **Action endpoints**: move/click/right-click/double-click/middle-click/scroll/type/hotkey
+- **OCR endpoint**: extract text blocks with bounding boxes via `POST /ocr`
 - **Command execution endpoint**: run PowerShell/Bash/CMD commands via `POST /exec`
 - **Coordinate transform metadata** in visual responses so agents can map grid cells to real pixels
 - **Safety knobs**: token auth, dry-run mode, optional allowed-region restriction
@@ -23,6 +24,8 @@ CLICKTHROUGH_TOKEN=change-me python -m server.app
 
 Server defaults to `127.0.0.1:8123`.
 
+For OCR support, install the native `tesseract` binary on the host (in addition to Python deps).
+
 `python-dotenv` is enabled, so values from a repo-root `.env` file are loaded automatically.
 
 ## Minimal API flow