fix: correct typos in error messages and guard empty coordinate extraction

Author: fix2015

src/askui/models/anthropic/utils.py

@@ -4,5 +4,8 @@
 def extract_click_coordinates(text: str) -> tuple[int, int]:
     pattern = r"<click>(\d+),\s*(\d+)"
     matches = re.findall(pattern, text)
+    if not matches:
+        msg = f"No click coordinates found in text: {text}"
+        raise ValueError(msg)
     x, y = matches[-1]
     return int(x), int(y)

src/askui/tools/android/ppadb_agent_os.py

@@ -436,7 +436,7 @@ def _get_selected_device(self) -> AndroidDevice:
         devices: list[AndroidDevice] = self._get_connected_devices()
 
         if not self._device:
-            msg = "No device is selected, did you call on of the set_device methods?"
+            msg = "No device is selected, did you call one of the set_device methods?"
             raise AndroidAgentOsError(msg)
 
         for device in devices:
@@ -447,7 +447,7 @@ def _get_selected_device(self) -> AndroidDevice:
 
     def _check_if_display_is_selected(self) -> None:
         if self._selected_display is None:
-            msg = "No display is selected, did you call on of  the set_display methods?"
+            msg = "No display is selected, did you call one of the set_display methods?"
             raise AndroidAgentOsError(msg)
 
     def _get_connected_devices(self) -> list[AndroidDevice]: