feat(skill): improve multi-turn fast-slow routing

skills/label-fast-slow-routing/scripts/validate_label.py

@@ -61,6 +61,16 @@ REQUIRED_FIELDS = {
 OPTIONAL_FIELDS = {
     "id",
     "counterevidence",
+    "context_relation",
+}
+CONTEXT_RELATION_VALUES = {
+    "independent",
+    "resolved_direct",
+    "operation_continuation",
+    "constraint_extension",
+    "planning_continuation",
+    "clarification_completion",
+    "unresolved_reference",
 }
 
 
@@ -285,6 +295,24 @@ def validate_record(record: Any, index: int) -> dict[str, Any]:
 
     if not isinstance(record.get("context_used"), bool):
         errors.append("context_used 必须是布尔值")
+    context_relation = record.get("context_relation")
+    if context_relation is not None and (
+        not isinstance(context_relation, str)
+        or context_relation not in CONTEXT_RELATION_VALUES
+    ):
+        errors.append("context_relation 不是受支持的上下文关系")
+    if context_relation == "independent" and record.get("context_used") is True:
+        errors.append("context_relation=independent 时 context_used 必须为 false")
+    if context_relation not in {None, "independent"}:
+        if record.get("context_used") is not True:
+            errors.append("依赖上下文的 context_relation 要求 context_used=true")
+        if isinstance(structural_signals, dict) and (
+            structural_signals.get("context_dependent") is not True
+        ):
+            errors.append(
+                "依赖上下文的 context_relation 要求 "
+                "structural_signals.context_dependent=true"
+            )
 
     fast_system_pending = record.get("fast_system_pending")
     if fast_system_pending is not None and not isinstance(fast_system_pending, bool):