Omzetting naar stdio.

README.md

@@ -1,11 +1,53 @@
 # racket-webview-qt
 
-The Qt backend of racket-webview
+The Qt WebEngine backend of `racket-webview`.
 
-# Version 0.2.2
+## Version 0.2.3
 
-QtWebEngine select popup rendering issue observed with older Qt 6.x.
-Symptom: native HTML <select> popup keeps growing/repainting while open;
-QtWebEngine process busy, Racket process idle.
-Resolved by upgrading to Qt 6.11.1.
+This version replaces the shared-library/shared-memory transport with a
+standalone process interface.
 
+## Transport
+
+`rktwebview_prg` receives line-delimited JSON commands on stdin, writes
+line-delimited JSON results and events to stdout, and writes all diagnostics to
+stderr. The existing command numbers and command payloads in `rkt_protocol.h`
+are unchanged.
+
+See `STDIO-PROTOCOL.md` for the transport envelope and shutdown rules.
+
+The former shared library, shared-memory queue, and callback sources remain in
+the repository for comparison, but they are no longer part of the CMake target.
+
+## Build
+
+The CMake target requires Qt Widgets and Qt WebEngineWidgets and builds only:
+
+```text
+rktwebview_prg
+```
+
+## Previous Qt update
+
+QtWebEngine select popup rendering issues were observed with older Qt 6.x. The
+native HTML `<select>` popup could keep growing or repainting while open while
+the QtWebEngine process remained busy. Upgrading to Qt 6.11.1 resolved this.
+
+## Integration test
+
+`rktwebview_test` starts the built `rktwebview_prg` with `QProcess` and tests
+the stdio handshake, request/result matching, basic webview commands, and clean
+shutdown. Run it from the build directory:
+
+```sh
+./rktwebview_test
+```
+
+For a protocol-only test that does not create a window:
+
+```sh
+./rktwebview_test --protocol-only
+```
+
+Set `RKT_WEBVIEW_PRG` to test a backend executable outside the test program's
+directory.