refactor: move No LoRA feature from LoRA Pool to Lora Cycler widget

Move the 'empty/no LoRA' cycling functionality from the LoRA Pool node
to the Lora Cycler widget for cleaner architecture:

Frontend changes:
- Add include_no_lora field to CyclerConfig interface
- Add includeNoLora state and logic to useLoraCyclerState composable
- Add toggle UI in LoraCyclerSettingsView with special styling
- Show 'No LoRA' entry in LoraListModal when enabled
- Update LoraCyclerWidget to integrate new logic

Backend changes:
- lora_cycler.py reads include_no_lora from config
- Calculate effective_total_count (actual count + 1 when enabled)
- Return empty lora_stack when on No LoRA position
- Return actual LoRA count in total_count (not effective count)

Reverted files to pre-PR state:
- lora_loader.py, lora_pool.py, lora_randomizer.py, lora_stacker.py
- lora_routes.py, lora_service.py
- LoraPoolWidget.vue and related files

Related to PR #861

Co-authored-by: dogatech <dogatech@dogatech.home>

vue-widgets/src/composables/useLoraCyclerState.ts

@@ -4,6 +4,7 @@ import type { ComponentWidget, CyclerConfig, LoraPoolConfig } from './types'
 export interface CyclerLoraItem {
   file_name: string
   model_name: string
+  file_path: string
 }
 
 export function useLoraCyclerState(widget: ComponentWidget<CyclerConfig>) {
@@ -34,6 +35,7 @@ export function useLoraCyclerState(widget: ComponentWidget<CyclerConfig>) {
   const repeatUsed = ref(0)         // How many times current index has been used (internal tracking)
   const displayRepeatUsed = ref(0)  // For UI display, deferred updates like currentIndex
   const isPaused = ref(false)       // Whether iteration is paused
+  const includeNoLora = ref(false)  // Whether to include empty LoRA option in cycle
 
   // Execution progress tracking (visual feedback)
   const isWorkflowExecuting = ref(false)    // Workflow is currently running
@@ -58,6 +60,7 @@ export function useLoraCyclerState(widget: ComponentWidget<CyclerConfig>) {
         repeat_count: repeatCount.value,
         repeat_used: repeatUsed.value,
         is_paused: isPaused.value,
+        include_no_lora: includeNoLora.value,
       }
     }
     return {
@@ -75,6 +78,7 @@ export function useLoraCyclerState(widget: ComponentWidget<CyclerConfig>) {
       repeat_count: repeatCount.value,
       repeat_used: repeatUsed.value,
       is_paused: isPaused.value,
+      include_no_lora: includeNoLora.value,
     }
   }
 
@@ -93,12 +97,13 @@ export function useLoraCyclerState(widget: ComponentWidget<CyclerConfig>) {
       sortBy.value = config.sort_by || 'filename'
       currentLoraName.value = config.current_lora_name || ''
       currentLoraFilename.value = config.current_lora_filename || ''
-      // Advanced index control features
-      repeatCount.value = config.repeat_count ?? 1
-      repeatUsed.value = config.repeat_used ?? 0
-      isPaused.value = config.is_paused ?? false
-      // Note: execution_index and next_index are not restored from config
-      // as they are transient values used only during batch execution
+    // Advanced index control features
+    repeatCount.value = config.repeat_count ?? 1
+    repeatUsed.value = config.repeat_used ?? 0
+    isPaused.value = config.is_paused ?? false
+    includeNoLora.value = config.include_no_lora ?? false
+    // Note: execution_index and next_index are not restored from config
+    // as they are transient values used only during batch execution
     } finally {
       isRestoring = false
     }
@@ -111,7 +116,9 @@ export function useLoraCyclerState(widget: ComponentWidget<CyclerConfig>) {
     // Calculate the next index (wrap to 1 if at end)
     const current = executionIndex.value ?? currentIndex.value
     let next = current + 1
-    if (totalCount.value > 0 && next > totalCount.value) {
+    // Total count includes no lora option if enabled
+    const effectiveTotalCount = includeNoLora.value ? totalCount.value + 1 : totalCount.value
+    if (effectiveTotalCount > 0 && next > effectiveTotalCount) {
       next = 1
     }
     nextIndex.value = next
@@ -122,7 +129,9 @@ export function useLoraCyclerState(widget: ComponentWidget<CyclerConfig>) {
     if (nextIndex.value === null) {
       // First execution uses current_index, so next is current + 1
       let next = currentIndex.value + 1
-      if (totalCount.value > 0 && next > totalCount.value) {
+      // Total count includes no lora option if enabled
+      const effectiveTotalCount = includeNoLora.value ? totalCount.value + 1 : totalCount.value
+      if (effectiveTotalCount > 0 && next > effectiveTotalCount) {
         next = 1
       }
       nextIndex.value = next
@@ -230,7 +239,9 @@ export function useLoraCyclerState(widget: ComponentWidget<CyclerConfig>) {
 
   // Set index manually
   const setIndex = (index: number) => {
-    if (index >= 1 && index <= totalCount.value) {
+    // Total count includes no lora option if enabled
+    const effectiveTotalCount = includeNoLora.value ? totalCount.value + 1 : totalCount.value
+    if (index >= 1 && index <= effectiveTotalCount) {
       currentIndex.value = index
     }
   }
@@ -272,6 +283,7 @@ export function useLoraCyclerState(widget: ComponentWidget<CyclerConfig>) {
     repeatCount,
     repeatUsed,
     isPaused,
+    includeNoLora,
   ], () => {
     widget.value = buildConfig()
   }, { deep: true })
@@ -294,6 +306,7 @@ export function useLoraCyclerState(widget: ComponentWidget<CyclerConfig>) {
     repeatUsed,
     displayRepeatUsed,
     isPaused,
+    includeNoLora,
     isWorkflowExecuting,
     executingRepeatStep,