feat(recipes): add reconnect remediation paths for missing recipe LoRAs

- Snapshot pre-rematch entry state (reconnectSnapshot) so rematched
  entries can be undone via the existing restore flow
- Bulk missing-LoRA downloads mark unresolvable failures hash-invalid,
  flipping those entries from download to reconnect candidacy
- Recipe modal always offers a reconnect action next to download for
  missing LoRA entries
- Rematch runs collect an opt-in relaxed-matching choice (also reconnect
  missing models by file name) via a pre-run options dialog on the
  global, bulk and single-recipe entries
- L4 (filename-level) matches are listed in a results dialog with
  per-entry undo

static/js/components/ContextMenu/GlobalContextMenu.js

@@ -4,6 +4,7 @@ import { translate } from '../../utils/i18nHelpers.js';
 import { state } from '../../state/index.js';
 import { getCompleteApiConfig, getCurrentModelType } from '../../api/apiConfig.js';
 import { performModelUpdateCheck } from '../../utils/updateCheckHelpers.js';
+import { rematchModalManager } from '../../managers/RematchModalManager.js';
 
 export class GlobalContextMenu extends BaseContextMenu {
     constructor() {
@@ -368,6 +369,18 @@ export class GlobalContextMenu extends BaseContextMenu {
             return;
         }
 
+        // Collect options (relaxed matching) before starting anything; the
+        // run only begins when the user confirms the dialog.
+        rematchModalManager.showOptionsModal({
+            onConfirm: ({ relaxed }) => this._startRematch(menuItem, relaxed),
+        });
+    }
+
+    async _startRematch(menuItem, relaxed = false) {
+        if (this._rematchInProgress) {
+            return;
+        }
+
         this._rematchInProgress = true;
         menuItem?.classList.add('disabled');
 
@@ -384,6 +397,7 @@ export class GlobalContextMenu extends BaseContextMenu {
             const response = await fetch('/api/lm/recipes/rematch', {
                 method: 'POST',
                 headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({ relaxed: !!relaxed }),
             });
 
             const result = await response.json();
@@ -458,6 +472,11 @@ export class GlobalContextMenu extends BaseContextMenu {
                             if (window.recipesPage) {
                                 window.recipesPage.refresh();
                             }
+                            // Filename-level (L4) matches are imprecise —
+                            // always surface them for review/undo.
+                            if (Array.isArray(p.l4_matches) && p.l4_matches.length > 0) {
+                                rematchModalManager.showResultsModal(p.l4_matches);
+                            }
                         } else if (p.status === 'error') {
                             throw new Error(p.error || 'Rematch failed');
                         } else if (p.status === 'cancelled') {