fix: filters being cleared when newText == ""

mast-react-vite/src/App.tsx

···
     clearFilters
   } = useFilter();
   const [currentAction, setCurrentAction] = useState("add");
+  const [savedText, setSavedText] = useState("");
   
   // Get current conditions and parameters for SQL query
   const { conditions: newConditions, params: newParams } = getWhereClause();
···
     ...todo,
     priority: todo.priority === '1'
   }));
-
-  // Keep newText in sync with filterText when in filter mode
-  useEffect(() => {
-    // Only update if we're in filter mode
-    if (currentAction === "filter") {
-      setNewText(filterText);
-    }
-  }, [filterText, currentAction]);
 
   // Listen for filter update events from sidebar - primarily for debugging
   useEffect(() => {
···
     }
   }, [parsedCommand, todos, selectedItems]);
 
-  // When parsed command changes to a filter action, update the filter text
-  useEffect(() => {
-    if (parsedCommand.action === "filter") {
-      // Set the filter text in the context when a filter command is parsed
-      setFilterText(newText);
-    }
-  }, [parsedCommand, newText, setFilterText]);
-
   const handleActionChange = (action: string) => {
-    // If switching to filter action, use the current filter text from context
+    // If switching to filter action, save current text and use filter text from context
     if (action === "filter") {
+      setSavedText(newText);
+      setCurrentAction(action);
+			// If there is saved filter text, use that
       if (filterText) {
         setNewText(filterText);
-      }
+      } else {
+				// otherwise adopt current text as filter text
+				setFilterText(newText)
+			}
     } else if (currentAction === "filter" && action !== "filter") {
-      // If switching away from filter, clear the text input but keep the filter active
-      setNewText("");
+      // If switching away from filter, set action first then restore the saved text
+      setCurrentAction(action);
+			if (savedText !== "") {
+				setNewText(savedText)
+			}
+    } else {
+      setCurrentAction(action);
     }
-    
-    setCurrentAction(action);
   };
 
   const handleNewTextChange = (text: string) => {
-    // Update the local state
     setNewText(text);
     
-    // If the current action is filter, also update the filter text in the context
-    // This enables real-time filtering as the user types
     if (currentAction === "filter") {
-      // Only update the filter text if it's different to avoid circular updates
       if (text !== filterText) {
         setFilterText(text);
       }
···
   const handleEnter = (e) => {
     if (e.key === "Enter") {
       executeCommand();
-    }
-    if (e.keyCode === 8) {
-      if (newText.trim().length === 0) {
-        clearFilters();
-      }
     }
   };