added dynamic resizing in runtime to git diff

the program would bug out when resized and you would have to quit the entire shell and reload it back up just to get a resized gg dd. this is now fixed and you can resize any time you want, even in runtime

ncurses_diff_viewer.c

@@ -14,6 +14,65 @@
 #include <sys/wait.h>
 #include <time.h>
 #include <unistd.h>
+#include <signal.h>
+
+static volatile int terminal_resized = 0;
+
+void handle_sigwinch(int sig) {
+	(void)sig;
+	terminal_resized = 1;
+}
+
+/**
+ * Handle terminal resize by recreating all windows
+ */
+void handle_terminal_resize(NCursesDiffViewer *viewer) {
+    if (!viewer) return;
+    
+    // Clean up old windows
+    if (viewer->file_list_win) delwin(viewer->file_list_win);
+    if (viewer->branch_list_win) delwin(viewer->branch_list_win);
+    if (viewer->commit_list_win) delwin(viewer->commit_list_win);
+    if (viewer->stash_list_win) delwin(viewer->stash_list_win);
+    if (viewer->file_content_win) delwin(viewer->file_content_win);
+    if (viewer->status_bar_win) delwin(viewer->status_bar_win);
+    
+    // Reinitialize ncurses with new terminal size
+    endwin();
+    refresh();
+    clear();
+    
+    // Get new terminal dimensions
+    getmaxyx(stdscr, viewer->terminal_height, viewer->terminal_width);
+    viewer->file_panel_width = viewer->terminal_width * 0.4;
+    viewer->status_bar_height = viewer->terminal_height * 0.05;
+    if (viewer->status_bar_height < 1) viewer->status_bar_height = 1;
+    
+    int available_height = viewer->terminal_height - 1 - viewer->status_bar_height;
+    viewer->file_panel_height = available_height * 0.3;
+    viewer->commit_panel_height = available_height * 0.3;
+    viewer->branch_panel_height = available_height * 0.2;
+    viewer->stash_panel_height = available_height - viewer->file_panel_height - 
+                                 viewer->commit_panel_height - viewer->branch_panel_height - 3;
+    
+    int status_bar_y = 1 + available_height;
+    
+    // Recreate all windows with new dimensions
+    viewer->file_list_win = newwin(viewer->file_panel_height, viewer->file_panel_width, 1, 0);
+    viewer->branch_list_win = newwin(viewer->branch_panel_height, viewer->file_panel_width, 
+                                     1 + viewer->file_panel_height + 1, 0);
+    viewer->commit_list_win = newwin(viewer->commit_panel_height, viewer->file_panel_width,
+                                     1 + viewer->file_panel_height + 1 + viewer->branch_panel_height + 1, 0);
+    viewer->stash_list_win = newwin(viewer->stash_panel_height, viewer->file_panel_width,
+                                    1 + viewer->file_panel_height + 1 + viewer->branch_panel_height + 1 + 
+                                    viewer->commit_panel_height + 1, 0);
+    viewer->file_content_win = newwin(available_height, viewer->terminal_width - viewer->file_panel_width - 1,
+                                      1, viewer->file_panel_width + 1);
+    viewer->status_bar_win = newwin(viewer->status_bar_height, viewer->terminal_width, status_bar_y, 0);
+    
+    // Force complete redraw
+    terminal_resized = 0;
+}
 
 /**
  * Initialize the ncurses diff viewer
@@ -3524,6 +3583,7 @@ int run_ncurses_diff_viewer(void) {
     printf("Failed to initialize ncurses diff viewer\n");
     return 1;
   }
+	signal(SIGWINCH, handle_sigwinch);
 
   // Get changed files (can be 0, that's okay)
   get_ncurses_changed_files(&viewer);
@@ -3577,6 +3637,10 @@ int run_ncurses_diff_viewer(void) {
 
   while (running) {
 
+		if (terminal_resized) {
+			handle_terminal_resize(&viewer);
+		}
+
     // Only update title if mode changed
     if (viewer.current_mode != last_mode) {
       // Clear just the title line