feat(lora-info): add Lora Info display node

Add a pure frontend node that shows filename and editable notes for
a selected LoRA. Connect any output from a LoRA Loader/Stacker/Randomizer/
WanVideoSelect to the lora_source input — selecting a LoRA in the source
widget updates the info display automatically.

- Python node (LoraInfoLM): display-only, no workflow execution
- Vue widget: filename label, auto-sizing notes textarea, save button
  with ComfyUI toast feedback on save
- Frontend extension: wire-based selection propagation with stale-response
  race guard; clears display on wire disconnect
- Backend: get-notes endpoint now returns file_path alongside notes;
  matching supports full-path lora syntax; fix NoneType crash in
  trigger words endpoint; document cache file_name invariant
- Wired into all four lora widget nodes (Loader, Stacker, Randomizer,
  WanVideoSelect)

web/comfyui/lora_loader.js

@@ -13,6 +13,7 @@ import {
 import { addLorasWidget } from "./loras_widget.js";
 import { applyLoraValuesToText, debounce } from "./lora_syntax_utils.js";
 import { applySelectionHighlight } from "./trigger_word_highlight.js";
+import { updateConnectedLoraInfoNodes } from "./lora_info.js";
 
 app.registerExtension({
   name: "LoraManager.LoraLoader",
@@ -185,8 +186,10 @@ app.registerExtension({
           this,
           "loras",
           {
-            onSelectionChange: (selection) =>
-              applySelectionHighlight(this, selection),
+            onSelectionChange: (selection) => {
+              applySelectionHighlight(this, selection);
+              updateConnectedLoraInfoNodes(this, selection);
+            },
           },
           (value) => {
             // Prevent recursive calls