feat: Implement search and filter functionality in MedTrackerApp

- Added DataFilter class for managing filtering and searching of medical data.
- Introduced SearchFilterWidget for UI controls related to search and filters.
- Integrated search and filter features into MedTrackerApp, allowing users to filter data by date range, medicine status, and pathology scores.
- Implemented quick filters for common use cases (last week, last month, high symptoms).
- Enhanced data loading and display logic to accommodate filtered data.
- Added error handling for data loading issues.
- Updated UIManager to reflect filter status in the application.
- Improved entry validation in add_new_entry method to ensure data integrity.

src/ui_manager.py

@@ -79,7 +79,7 @@ class UIManager:
         main_container = ttk.LabelFrame(
             parent_frame, text="New Entry", style="Card.TLabelframe"
         )
-        main_container.grid(row=1, column=0, padx=10, pady=10, sticky="nsew")
+        main_container.grid(row=2, column=0, padx=10, pady=10, sticky="nsew")
         main_container.grid_rowconfigure(0, weight=1)
         main_container.grid_columnconfigure(0, weight=1)
 
@@ -253,7 +253,7 @@ class UIManager:
         table_frame: ttk.LabelFrame = ttk.LabelFrame(
             parent_frame, text="Log (Double-click to edit)", style="Card.TLabelframe"
         )
-        table_frame.grid(row=1, column=1, padx=10, pady=10, sticky="nsew")
+        table_frame.grid(row=2, column=1, padx=10, pady=10, sticky="nsew")
 
         # Configure table frame to expand
         table_frame.grid_rowconfigure(0, weight=1)
@@ -378,7 +378,7 @@ class UIManager:
             bd=1,
             bg=theme_colors["bg"],
         )
-        self.status_bar.grid(row=2, column=0, columnspan=2, sticky="ew", padx=5, pady=2)
+        self.status_bar.grid(row=3, column=0, columnspan=2, sticky="ew", padx=5, pady=2)
 
         # Configure the parent to make the status bar stretch
         parent_frame.grid_columnconfigure(0, weight=1)
@@ -437,13 +437,16 @@ class UIManager:
         if message_type != "info":
             self.root.after(5000, lambda: self.update_status("Ready", "info"))
 
-    def update_file_info(self, filename: str, entry_count: int = 0) -> None:
+    def update_file_info(
+        self, filename: str, entry_count: int = 0, filter_status: str = None
+    ) -> None:
         """
         Update the file information in the status bar.
 
         Args:
             filename: Name of the current data file
             entry_count: Number of entries in the file
+            filter_status: Optional filter status string (e.g., "filtered (5/10)")
         """
         if not self.file_info_label:
             return
@@ -451,7 +454,10 @@ class UIManager:
         file_display = os.path.basename(filename) if filename else "No file"
         info_text = f"{file_display}"
         if entry_count > 0:
-            info_text += f" ({entry_count} entries)"
+            if filter_status:
+                info_text += f" ({entry_count} entries, {filter_status})"
+            else:
+                info_text += f" ({entry_count} entries)"
 
         self.file_info_label.config(text=info_text)