docs(ui,window): update comments around buffer handling

Clarify buffer-related behavior and notes in the window module comments; no functional changes.

src/ui/window.c

@@ -750,7 +750,8 @@ win_page_down(ProfWin* window, int scroll_size)
         win_update_virtual(window);
     }
 
-    // switch off page if no messages left to read
+    /*switch off page if no messages left to read
+    TODO: update buffer end handling to check  meassages just after last entry*/ 
     if (*scroll_state == WIN_SCROLL_REACHED_BOTTOM) {
         window->layout->paged = 0;
         window->layout->unread_msg = 0;
@@ -1703,22 +1704,11 @@ static void
 _win_printf(ProfWin* window, const char* show_char, int pad_indent, GDateTime* timestamp, int flags, theme_item_t theme_item, const char* const display_from, const char* const from_jid, const char* const message_id, const char* const message, ...)
 {
 
-    /* Test code start
-        TODO:
-     - TOLERABLE check window->layout->paged handling for reliability (if buffer size is less than window size [SCROLLING] not set)
-     - make a propper condition check for differernt cases
-     - DONE add a user notification in header when new messages arrive while scrolling history
-     - DONE handle SCROLLED state properly in case of incominf messages (currently it is cleared before new message is printed)
-
-    Description: this code prevents printing and buffer when user is viewing message history [SCROLLING]
-
-#warning "TEST CODE: temporary/test code present in window.c:1709 - remove before release"*/
-
+    /* Prevent printing and buffer update when user is viewing message history [SCROLLING]*/
     if ((window->layout->paged) && wins_is_current(window)) {
         window->layout->unread_msg++;
         return;
     }
-    /* Test code end */
 
     if (timestamp == NULL) {
         timestamp = g_date_time_new_now_local();