feat: standalone .ly interpreter - parses blocks/wires, executes flow control

Engine/VisualScript/block_workspace.c

@@ -26,10 +26,9 @@ void workspace_destroy(BlockWorkspace* ws) {
 int workspace_add_block(BlockWorkspace* ws, Block* block) {
     if (ws->block_count >= MAX_WORKSPACE_BLOCKS) return -1;
     if (!block) return -1;
-    
-    block->id = ws->next_block_id++;
+    if (block->id <= 0) block->id = ws->next_block_id++;
+    else if (block->id >= ws->next_block_id) ws->next_block_id = block->id + 1;
     block->workspace = ws;
-    
     ws->blocks[ws->block_count++] = block;
     return block->id;
 }