Improve seed and loop controls

loop_nodes.py

@@ -258,6 +258,7 @@ class SxCPForLoopStart:
         return {
             "required": {
                 "total": ("INT", {"default": 2, "min": 1, "max": 100000, "step": 1}),
+                "skip": ("INT", {"default": 0, "min": 0, "max": 100000, "step": 1}),
             },
             "optional": {
                 f"initial_value{index}": (ANY_TYPE,) for index in range(1, MAX_CARRY_VALUES + 1)
@@ -276,9 +277,10 @@ class SxCPForLoopStart:
     FUNCTION = "start"
     CATEGORY = "prompt_builder/loop"
 
-    def start(self, total, initial_index=None, initial_collected=None, **kwargs):
+    def start(self, total, skip=0, initial_index=None, initial_collected=None, **kwargs):
         _require_graph_builder()
-        index = 0 if initial_index is None else initial_index
+        skip = max(0, int(skip))
+        index = skip if initial_index is None else max(int(initial_index), skip)
         collected = initial_collected
         initial_values = {
             "initial_value0": index,
@@ -287,7 +289,7 @@ class SxCPForLoopStart:
         for carry_index in range(1, MAX_CARRY_VALUES + 1):
             initial_values[f"initial_value{carry_index + 1}"] = kwargs.get(f"initial_value{carry_index}")
         graph = GraphBuilder()
-        graph.node("SxCPWhileLoopStart", condition=total, **initial_values)
+        graph.node("SxCPWhileLoopStart", condition=index < int(total), **initial_values)
         return {
             "result": tuple(["stub", index, collected] + [kwargs.get(f"initial_value{index}") for index in range(1, MAX_CARRY_VALUES + 1)]),
             "expand": graph.finalize(),