fix: Improve status bar dragging and commit message display

gtm

@@ -845,10 +845,11 @@ def draw_status_bars(stdscr, state):
         except curses.error:
             pass
         
-        # Draw a blank second status bar
+        # Fill all remaining status bar lines with spaces
+        for y in range(status_bar_start + 1, state.height):
             for x in range(state.width - 1):
                 try:
-                stdscr.addch(state.height - 1, x, ' ', curses.A_REVERSE)
+                    stdscr.addch(y, x, ' ', curses.A_REVERSE)
                 except curses.error:
                     pass
         
@@ -888,10 +889,10 @@ def draw_status_bars(stdscr, state):
     status_attr = curses.A_NORMAL  # Use terminal's default colors
     
     # Fill all status bar lines with spaces using reverse video
-    for y in range(state.status_bar_height):
+    for y in range(status_bar_start, state.height):
         for x in range(state.width - 1):
             try:
-                stdscr.addch(state.height - state.status_bar_height + y, x, ' ', curses.A_REVERSE)
+                stdscr.addch(y, x, ' ', curses.A_REVERSE)
             except curses.error:
                 pass
     
@@ -933,10 +934,10 @@ def draw_status_bars(stdscr, state):
     except curses.error:
             pass
     
-    # --- Second status bar (bottom) ---
+    # --- Second status bar and additional lines for commit details ---
-    # Draw the commit details in the second status bar
+    # Draw the commit details in the status bar area
     
-    # Draw the commit hash and message on the left
+    # Draw the commit hash and message
     if state.commit_hash:
         commit_info = f" {state.commit_hash} "
         
@@ -952,7 +953,7 @@ def draw_status_bars(stdscr, state):
         if not message_lines:
             message_lines = [""]
         
-        # Calculate how many message lines we can display
+        # Calculate how many message lines we can display (reserve 1 line for the main status bar)
         available_message_lines = state.status_bar_height - 1
         
         try:
@@ -968,13 +969,15 @@ def draw_status_bars(stdscr, state):
                 stdscr.addstr(bottom_line, right_x, author_branch_info, curses.A_REVERSE)
             
             # Draw the first line of the commit message on the same line as the hash
-            first_line = message_lines[0]
+            first_line = message_lines[0] if message_lines else ""
             if len(first_line) > available_width:
                 first_line = first_line[:available_width-3] + "..."
             stdscr.addstr(bottom_line, len(commit_info), first_line, curses.A_REVERSE)
             
-            # Draw additional lines of the commit message if we have space
+            # Draw additional lines of the commit message if we have space and more lines
-            for i in range(1, min(available_message_lines, len(message_lines))):
+            for i in range(1, min(len(message_lines), available_message_lines + 1)):
+                if i >= len(message_lines):
+                    break
                 line = message_lines[i]
                 # For continuation lines, we have more space since we don't need to show the hash
                 line_available_width = state.width - 4  # Leave some margin
@@ -982,6 +985,7 @@ def draw_status_bars(stdscr, state):
                     line = line[:line_available_width-3] + "..."
                 # Draw the line with some indentation (going upward from the bottom line)
                 line_y = bottom_line - i
+                if line_y >= status_bar_start:  # Make sure we don't draw above the status bar area
                     stdscr.addstr(line_y, 4, line, curses.A_REVERSE)
         except curses.error:
             pass
@@ -1135,10 +1139,9 @@ def update_status_bar_height(state: AppState, my: int) -> AppState:
     min_height = 2  # Minimum 2 lines for the status bar
     max_height = min(10, state.height // 2)  # Maximum 10 lines or half the screen
     
-    # Calculate the new height based on how far the user has dragged
+    # Calculate the new height based on mouse position
-    status_bar_start = state.height - state.status_bar_height
+    # When dragging up, we want to increase the status bar height
-    drag_distance = status_bar_start - my
+    new_height = state.height - my
-    new_height = state.status_bar_height + drag_distance
     
     # Clamp to allowed range
     new_height = max(min_height, min(new_height, max_height))