fix link shortcut and mark as read

src/services/himalaya/client.py

@@ -216,6 +216,39 @@ async def get_message_content(message_id: int) -> Tuple[Optional[str], bool]:
         return None, False
 
 
+async def mark_as_read(message_id: int) -> Tuple[Optional[str], bool]:
+    """
+    Mark a message as read by adding the 'seen' flag.
+
+    Args:
+        message_id: The ID of the message to mark as read
+
+    Returns:
+        Tuple containing:
+        - Result message or error
+        - Success status (True if operation was successful)
+    """
+    try:
+        cmd = f"himalaya flag add seen {message_id}"
+
+        process = await asyncio.create_subprocess_shell(
+            cmd,
+            stdout=asyncio.subprocess.PIPE,
+            stderr=asyncio.subprocess.PIPE,
+        )
+        stdout, stderr = await process.communicate()
+
+        if process.returncode == 0:
+            return stdout.decode().strip() or "Marked as read", True
+        else:
+            error_msg = stderr.decode().strip()
+            logging.error(f"Error marking message as read: {error_msg}")
+            return error_msg or "Unknown error", False
+    except Exception as e:
+        logging.error(f"Exception during marking message as read: {e}")
+        return str(e), False
+
+
 def sync_himalaya():
     """This command does not exist. Halucinated by AI."""
     try: