Unify Environment's search paths and classpath

Both are ordered places imports are resolved from; each server reads
them as its language does. Nothing read the classpath.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: gselzer

src/main/java/org/scijava/plugins/scripting/jython/PythonCompanion.java

@@ -112,7 +112,7 @@ static PythonCompanion launch(final LanguageServerService servers,
 	/** Where the server runs: its own Python, searching the Java stubs. */
 	static Environment environment(final JavaStubs stubs) {
 		return new Environment(null, Collections.singletonList(stubs.dir()
-			.getAbsolutePath()), null, null);
+			.getAbsolutePath()), null);
 	}
 
 	// -- Documents --

src/test/java/org/scijava/plugins/scripting/jython/JythonServerCompletionTest.java

@@ -93,7 +93,7 @@ public void testEnvironment() {
 		final Environment env = PythonCompanion.environment(stubs);
 		assertEquals(null, env.interpreter());
 		assertEquals(Collections.singletonList(stubsDir.getAbsolutePath()), env
-			.searchPaths());
+			.paths());
 	}
 
 	@Test