fix: Update buffer info structs to use flags and atomic operations

Co-Authored-By: Matt Wong <[email protected]>

Author: devin-ai-integration[bot]

app/sheet/handlers.c

@@ -177,10 +177,7 @@ struct zsvsheet_buffer_info_internal zsvsheet_buffer_info_internal(zsvsheet_buff
     struct zsvsheet_ui_buffer *b = h;
 
     pthread_mutex_lock(&b->mutex);
-    info.index_started = index_started(b);
-    info.index_ready = index_ready(b);
-    info.write_in_progress = write_in_progress(b);
-    info.write_done = write_done(b);
+    info.flags = b->flags;
     info.dimensions = b->dimensions;
     pthread_mutex_unlock(&b->mutex);
   }

app/sheet/handlers_internal.h

@@ -122,7 +122,21 @@ enum zsvsheet_status zsvsheet_push_transformation(zsvsheet_proc_context_t ctx,
                                                   struct zsvsheet_buffer_transformation_opts opts);
 #endif
 
-struct zsvsheet_buffer_data zsvsheet_buffer_info(zsvsheet_buffer_t buff);
+/**
+ * Get information about the buffer's flags and state
+ */
+struct zsvsheet_buffer_info {
+  char has_row_num;
+  size_t rownum_col_offset;
+};
+
+/**
+ * Get internal information about the buffer's state
+ */
+struct zsvsheet_buffer_info_internal {
+  struct zsvsheet_flags flags;
+  struct zsvsheet_dimensions dimensions;
+};
 
 /** cell formatting **/
 zsvsheet_cell_attr_t zsvsheet_cell_profile_attrs(enum zsvsheet_cell_profile_t);