feat: allow workflow step level adjustment

app/(admin)/settings/agent-workflow/agent-workflow-settings-client.tsx

@@ -2812,6 +2812,24 @@ export function AgentWorkflowSettingsClient({
     });
   };
 
+  const handlePromoteWorkflowStep = (stepKey: string, parentStepKey: string | null) => {
+    if (!parentStepKey) {
+      toast.error("一级模块不能继续升一级");
+      return;
+    }
+
+    handleMoveWorkflowStep(stepKey, parentStepKey, "after");
+  };
+
+  const handleIndentWorkflowStep = (stepKey: string, previousSiblingStepKey: string | null) => {
+    if (!previousSiblingStepKey) {
+      toast.error("当前模块前面没有可作为父级的同级模块");
+      return;
+    }
+
+    handleMoveWorkflowStep(stepKey, previousSiblingStepKey, "inside");
+  };
+
   const handleWorkflowStepDragStart = (
     event: DragEvent<HTMLElement>,
     stepKey: string
@@ -4068,7 +4086,9 @@ export function AgentWorkflowSettingsClient({
     step: AgentWorkflowStepUiConfig,
     depth: number,
     indexPath: number[],
-    siblingCount = 0
+    siblingCount = 0,
+    parentStepKey: string | null = null,
+    previousSiblingStepKey: string | null = null
   ) => {
     const stepLabel = indexPath.join(".");
     const levelLabel = getWorkflowLevelLabel(depth, "模块");
@@ -4080,6 +4100,10 @@ export function AgentWorkflowSettingsClient({
     const isTopLevelStep = depth === 1;
     const canMoveTopLevelStepUp = isTopLevelStep && indexPath[0] > 1;
     const canMoveTopLevelStepDown = isTopLevelStep && indexPath[0] < siblingCount;
+    const subtreeDepth = getWorkflowStepSubtreeDepth(step);
+    const canPromoteStep = Boolean(parentStepKey);
+    const canIndentStep =
+      Boolean(previousSiblingStepKey) && depth + subtreeDepth <= AGENT_WORKFLOW_MAX_TREE_DEPTH;
     const canAddChildStep = depth < AGENT_WORKFLOW_MAX_TREE_DEPTH;
     const canPasteAsChild =
       Boolean(copiedWorkflowStep) &&
@@ -4185,6 +4209,30 @@ export function AgentWorkflowSettingsClient({
                         </Button>
                       </>
                     ) : null}
+                    {canPromoteStep ? (
+                      <Button
+                        type="button"
+                        variant="outline"
+                        size="sm"
+                        className="h-8 px-2 text-xs"
+                        onClick={() => handlePromoteWorkflowStep(step.key, parentStepKey)}
+                        title="提升到父模块同级，例如三级模块变二级模块"
+                      >
+                        升一级
+                      </Button>
+                    ) : null}
+                    {canIndentStep ? (
+                      <Button
+                        type="button"
+                        variant="outline"
+                        size="sm"
+                        className="h-8 px-2 text-xs"
+                        onClick={() => handleIndentWorkflowStep(step.key, previousSiblingStepKey)}
+                        title="移入上一个同级模块下面，降低一级"
+                      >
+                        降一级
+                      </Button>
+                    ) : null}
                     {canAddChildStep ? (
                       <Button
                         type="button"
@@ -4287,7 +4335,8 @@ export function AgentWorkflowSettingsClient({
                       <div>
                         <div className="text-sm font-medium">子模块配置</div>
                         <div className="text-xs text-muted-foreground">
-                          支持把模块拖到任意主模块或子模块下，最多 {AGENT_WORKFLOW_MAX_TREE_DEPTH} 级。
+                          支持拖拽到任意模块下，也可以用“升一级 / 降一级”快速调整层级，最多{" "}
+                          {AGENT_WORKFLOW_MAX_TREE_DEPTH} 级。
                         </div>
                       </div>
                       <div className="flex flex-wrap items-center gap-2">
@@ -4322,10 +4371,14 @@ export function AgentWorkflowSettingsClient({
                     {sortedChildSteps.length > 0 ? (
                       <div className="space-y-3 border-l border-dashed border-border/80 pl-3 sm:pl-4">
                         {sortedChildSteps.map((childStep, childIndex) =>
-                          renderWorkflowStepCard(childStep, depth + 1, [
-                            ...indexPath,
-                            childIndex + 1,
-                          ], sortedChildSteps.length)
+                          renderWorkflowStepCard(
+                            childStep,
+                            depth + 1,
+                            [...indexPath, childIndex + 1],
+                            sortedChildSteps.length,
+                            step.key,
+                            childIndex > 0 ? sortedChildSteps[childIndex - 1].key : null
+                          )
                         )}
                       </div>
                     ) : (
@@ -6073,7 +6126,14 @@ export function AgentWorkflowSettingsClient({
 
               {sortedSteps.length > 0 ? (
                 sortedSteps.map((step, stepIndex) =>
-                  renderWorkflowStepCard(step, 1, [stepIndex + 1], sortedSteps.length)
+                  renderWorkflowStepCard(
+                    step,
+                    1,
+                    [stepIndex + 1],
+                    sortedSteps.length,
+                    null,
+                    stepIndex > 0 ? sortedSteps[stepIndex - 1].key : null
+                  )
                 )
               ) : (
                 <motion.div variants={itemVariants}>