flatten modules to repo root, vendor deps, repair Eclipse build paths

Move api, engine, ui-console and ui-desktop out of modules/ up to the
repo root and drop the empty exception project (GuessMarketException now
lives in api).

Vendor gson, jaxb, okhttp, openjfx and tomcat under lib/, and group the
JUnit standalone jar into lib/junit/ alongside them.

Rewrite every .classpath: drop the copy-pasted optional="true" that was
masking real build path errors, point the library entries at ../lib/,
and put the JUnit jar on the test source folders so the placeholder
AppTest classes compile.

ui-desktop: take the JavaFX jars off the modulepath (there is no
module-info.java, so module="true" left the packages unresolvable) and
add a Launcher that calls Application.launch, avoiding the "JavaFX
runtime components are missing" check without VM arguments.

engine: add LocalGuessMarketService and the GuessMarketContext provider
interface, and give GuessMarketException the no-arg and cause
constructors they need.

1 files changed, 0 insertions, 26 deletions

diff --git a/modules/ui-desktop/src/main/java/market/guess/ui/desktop/App.java b/modules/ui-desktop/src/main/java/market/guess/ui/desktop/App.java
deleted file mode 100644
index 698cdd7..0000000
--- a/modules/ui-desktop/src/main/java/market/guess/ui/desktop/App.java
+++ /dev/null
@@ -1,26 +0,0 @@
-package market.guess.ui.desktop;
-
-import javafx.application.Application;
-import javafx.scene.Scene;
-import javafx.scene.control.Label;
-import javafx.scene.layout.StackPane;
-import javafx.stage.Stage;
-
-public class App extends Application {
-  public static void main(String[] args) {
-    launch();
-  }
-
-  @Override
-  public void start(Stage stage) throws Exception {
-    var javaVersion = System.getProperty("java.version");
-    var openjfxVersion = System.getProperty("javafx.version");
-
-    var label =
-        new Label("Hello. JavaFX " + openjfxVersion + ", running on Java " + javaVersion + ".");
-    var scene = new Scene(new StackPane(label), 640, 480);
-
-    stage.setScene(scene);
-    stage.show();
-  }
-}