feat(driver): add escape to the pressKey surface

escape is a key a spec has real use for and no platform could send it. android maps it to KEYCODE_ESCAPE, the ios companion to HID usage 41 and the in-simulator runner to XCUIKeyboardKey.escape, and the Key union accepts it so it can be written at all.

sidecar/src/main/kotlin/dev/sanderling/sidecar/DriverBackend.kt

@@ -513,6 +513,7 @@ class StubDriverBackend(
             "home" to "KEYCODE_HOME",
             "enter" to "KEYCODE_ENTER",
             "tab" to "KEYCODE_TAB",
+            "escape" to "KEYCODE_ESCAPE",
             "up" to "KEYCODE_DPAD_UP",
             "down" to "KEYCODE_DPAD_DOWN",
             "left" to "KEYCODE_DPAD_LEFT",
@@ -1207,6 +1208,7 @@ private fun keyCodeToMaestro(adbKeyCode: String): maestro.KeyCode? =
         "KEYCODE_HOME" -> maestro.KeyCode.HOME
         "KEYCODE_ENTER" -> maestro.KeyCode.ENTER
         "KEYCODE_TAB" -> maestro.KeyCode.TAB
+        "KEYCODE_ESCAPE" -> maestro.KeyCode.ESCAPE
         "KEYCODE_DPAD_UP" -> maestro.KeyCode.REMOTE_UP
         "KEYCODE_DPAD_DOWN" -> maestro.KeyCode.REMOTE_DOWN
         "KEYCODE_DPAD_LEFT" -> maestro.KeyCode.REMOTE_LEFT

sidecar/src/test/kotlin/dev/sanderling/sidecar/InputTextTest.kt

@@ -212,4 +212,17 @@ class InputTextTest {
         assertEquals(maestro.KeyCode.ENTER, maestroKeyFor("enter"))
         assertFailsWith<IllegalArgumentException> { maestroKeyFor("zorp") }
     }
+
+    // escape is a documented key. Missing from the table it throws on the adb
+    // backend and, when a table entry has no device-driver equivalent, the
+    // device backend used to drop the press with no error at all.
+    @Test fun escapeReachesBothAndroidBackends() {
+        val commands = mutableListOf<List<String>>()
+        StubDriverBackend("android") { commands.add(it) }.pressKey("escape")
+        assertEquals(
+            listOf(listOf("shell", "input", "keyevent", "KEYCODE_ESCAPE")),
+            commands,
+        )
+        assertEquals(maestro.KeyCode.ESCAPE, maestroKeyFor("escape"))
+    }
 }