fix(nodes): Save to library review fixes (#90)

- A switch wired from a node the graph cannot read and off at run time
  marks the node's run key, so an earlier run's tracker entry never
  links this run's images.
- The scan reports such files as not_saved_wired ("only the run itself
  can link it") instead of not_saved.
- Workflow-only metadata ignores muted and bypassed PromptManager nodes
  and reads nodes inside subgraph definitions.
- The Focused, Split and Pair footer says when the switch comes from a
  link.

utils/prompt_graph.py

@@ -133,6 +133,8 @@ def _workflow_node_opted_out(node: Any) -> bool:
         return False
     if (node.get("type") or node.get("class_type")) not in PROMPT_MANAGER_TYPES:
         return False
+    if node.get("mode") in (2, 4):
+        return False  # muted or bypassed: it did not run
     values = node.get("widgets_values")
     return isinstance(values, list) and any(value is False for value in values)
 
@@ -160,7 +162,16 @@ def metadata_opted_out(metadata: Any, *, unreadable: bool = False) -> bool:
     nodes = list(metadata.get("text_encoder_nodes") or [])
     if isinstance(workflow, dict) and isinstance(workflow.get("nodes"), list):
         nodes.extend(workflow["nodes"])
-    return any(_workflow_node_opted_out(node) for node in nodes)
+        definitions = workflow.get("definitions")
+        subgraphs = (
+            definitions.get("subgraphs") if isinstance(definitions, dict) else None
+        )
+        for subgraph in subgraphs if isinstance(subgraphs, list) else []:
+            inner = subgraph.get("nodes") if isinstance(subgraph, dict) else None
+            nodes.extend(inner if isinstance(inner, list) else [])
+    # Without the executed graph the node's role is unknown: any opted-out
+    # PromptManager node opts the file out (never a guessed link).
+    return any(_workflow_node_opted_out(node) for node in nodes[:MAX_VISITS])
 
 
 def _positive_roots(graph: Dict[str, Any]) -> List[Any]: