Fix Windows e2e tests: xa11y 0.7 supports Windows input + screenshot

xa11y 0.7 uses SendInput (click/key/type/scroll) and GDI (screenshot)
on Windows, so the five "fails gracefully on windows" tests that expected
"not supported" errors are now wrong. Remove them and extend the existing
platform-agnostic success tests to run on Windows too.

type_text gets a Windows variant that types without a prior focus step
(Notepad is running from CI setup and holds keyboard focus).

https://claude.ai/code/session_01VtV1Fz3AhvrgTgoiz7ouFz

Author: claude

tests/e2e_live.rs

@@ -32,7 +32,6 @@ fn notepad_pid() -> String {
 // =============================================================================
 
 #[test]
-#[cfg(any(target_os = "linux", target_os = "macos"))]
 fn screenshot_captures_a_file() {
     let tmp = tempfile::TempDir::new().unwrap();
     let output = tmp.path().join("screen.png");
@@ -44,16 +43,6 @@ fn screenshot_captures_a_file() {
     assert!(meta.len() > 100, "screenshot should be a real image");
 }
 
-#[test]
-#[cfg(target_os = "windows")]
-fn screenshot_fails_gracefully_on_windows() {
-    agent_desktop()
-        .args(["screenshot", "--output", "C:\\Temp\\screen.png"])
-        .assert()
-        .failure()
-        .stderr(predicate::str::contains("not supported"));
-}
-
 // =============================================================================
 // Observe
 // =============================================================================
@@ -298,24 +287,13 @@ fn read_clipboard_fails_gracefully_on_windows() {
 // =============================================================================
 
 #[test]
-#[cfg(any(target_os = "linux", target_os = "macos"))]
 fn click_at_coordinates() {
     agent_desktop()
         .args(["click", "--x", "100", "--y", "100"])
         .assert()
         .success();
 }
 
-#[test]
-#[cfg(target_os = "windows")]
-fn click_fails_gracefully_on_windows() {
-    agent_desktop()
-        .args(["click", "--x", "100", "--y", "100"])
-        .assert()
-        .failure()
-        .stderr(predicate::str::contains("not supported"));
-}
-
 #[test]
 fn click_without_args_fails() {
     agent_desktop()
@@ -367,47 +345,25 @@ fn click_element_by_query() {
 // =============================================================================
 
 #[test]
-#[cfg(any(target_os = "linux", target_os = "macos"))]
 fn scroll_down() {
     agent_desktop()
         .args(["scroll", "--direction", "down"])
         .assert()
         .success();
 }
 
-#[test]
-#[cfg(target_os = "windows")]
-fn scroll_fails_gracefully_on_windows() {
-    agent_desktop()
-        .args(["scroll", "--direction", "down"])
-        .assert()
-        .failure()
-        .stderr(predicate::str::contains("not supported"));
-}
-
 // =============================================================================
 // Key press
 // =============================================================================
 
 #[test]
-#[cfg(any(target_os = "linux", target_os = "macos"))]
 fn key_press() {
     agent_desktop()
         .args(["key", "--name", "escape"])
         .assert()
         .success();
 }
 
-#[test]
-#[cfg(target_os = "windows")]
-fn key_press_fails_gracefully_on_windows() {
-    agent_desktop()
-        .args(["key", "--name", "escape"])
-        .assert()
-        .failure()
-        .stderr(predicate::str::contains("not supported"));
-}
-
 // =============================================================================
 // Type text
 // =============================================================================
@@ -440,12 +396,11 @@ fn type_text() {
 
 #[test]
 #[cfg(target_os = "windows")]
-fn type_text_fails_gracefully_on_windows() {
+fn type_text() {
     agent_desktop()
-        .args(["type", "--text", "hello"])
+        .args(["type", "--text", "hello from CI"])
         .assert()
-        .failure()
-        .stderr(predicate::str::contains("not supported"));
+        .success();
 }
 
 // =============================================================================