fix: 6 getters → propriétés plain + _recompute() (étape 1)

Alpine 3.14.9 ne supporte pas les getters dans le Proxy x-data.
Converti en propriétés mises à jour via _recompute() dans:
- init() après chargement tree
- _loadFolder() après chaque navigation
- doSort() / doFilter() après modifs

Getters remplacés:
- pathValue, canGoBack, canGoForward, flatTree,
  filteredTableItems, contentSnippetMap
- _computeFilteredTableItems() extrait de get filteredTableItems

Zéro getter restant, braces/parens équilibrés, 73 tests OK

app/templates/local_workspace.html

@@ -944,9 +944,7 @@ window._wsInitData = (function() {
     uploadStartTime: 0,
 
     // Path bar
-    get pathValue() {
-      return '/workspace/' + this.folderStack.filter(function(b){return b.id > 0}).map(function(b){return b.name}).join('/');
-    },
+    pathValue: '/workspace/',
 
     async navigateToRoot() {
       this.folderStack = [];
@@ -986,8 +984,8 @@ window._wsInitData = (function() {
     // Navigation history
     navHistory: [],
     navIndex: -1,
-    get canGoBack() { return this.navIndex > 0; },
-    get canGoForward() { return this.navIndex < this.folderStack.length - 1; },
+    canGoBack: false,
+    canGoForward: false,
 
     // Preview popup
     previewVisible: false,
@@ -1034,6 +1032,20 @@ window._wsInitData = (function() {
         // Load workspace tags
         this.loadWorkspaceTags();
       } catch(e) { console.error('Tree load error:', e); this.loaded = true; }
+      this._recompute();
+    },
+
+    _recompute() {
+      // Recompute all former getters as plain properties
+      this.canGoBack = this.navIndex > 0;
+      this.canGoForward = this.navIndex < this.folderStack.length - 1;
+      this.pathValue = '/workspace/' + this.folderStack.filter(function(b){return b.id > 0}).map(function(b){return b.name}).join('/');
+      // flatTree
+      var ft = [];
+      this._flattenTree(this.tree, ft);
+      this.flatTree = ft;
+      // filteredTableItems
+      this._computeFilteredTableItems();
     },
 
     // ── Pin/Favorite items ──
@@ -1108,11 +1120,7 @@ window._wsInitData = (function() {
     },
 
     // ── Table view data ──
-    get flatTree() {
-      var result = [];
-      this._flattenTree(this.tree, result);
-      return result;
-    },
+    flatTree: [],
     _flattenTree(nodes, out) {
       for (var i=0; i<nodes.length; i++) {
         out.push(nodes[i]);
@@ -1121,13 +1129,14 @@ window._wsInitData = (function() {
     },
 
     // ── Filtered table items (for enhanced filter/search table) ──
-    get filteredTableItems() {
+    filteredTableItems: [],
+    _computeFilteredTableItems() {
       var self = this;
       var q = (this.searchQuery || '').toLowerCase().trim();
       var ft = this.filterType || '';
       var tf = this.tagFilter || '';
       // If no filter active, return empty (show regular views)
-      if (!q && !ft && !tf) return [];
+      if (!q && !ft && !tf) { this.filteredTableItems = []; return; }
       // Flatten entire tree
       var all = [];
       this._flattenTree(this.tree, all);
@@ -1136,7 +1145,7 @@ window._wsInitData = (function() {
         all[i]._path = self._getItemPath(all[i].id);
       }
       // Filter
-      return all.filter(function(n) {
+      this.filteredTableItems = all.filter(function(n) {
         var nameMatch = !q || (n.name || '').toLowerCase().indexOf(q) !== -1;
         var typeMatch = true;
         if (ft) {
@@ -1258,10 +1267,7 @@ window._wsInitData = (function() {
     },
 
     // ── Content snippet for content view ──
-    get contentSnippetMap() {
-      // Preload snippets? Too expensive. Return empty, load on hover.
-      return {};
-    },
+    contentSnippetMap: {},
 
     // ── Context menu ──
     onContextMenu(ev) {
@@ -1522,6 +1528,7 @@ window._wsInitData = (function() {
         this.currentFolder = folderId || 0;
         this._saveExpandedState();
         this.previewItem = null;
+        this._recompute();
       } catch(e) { console.error('Load folder error:', e); }
     },
 
@@ -1643,6 +1650,7 @@ window._wsInitData = (function() {
       else if (s === 'date-desc') sorted.sort(function(a,b) { return (b.updated_at||'').localeCompare(a.updated_at||''); });
       else if (s === 'type') sorted.sort(function(a,b) { return (a.is_folder===b.is_folder) ? 0 : a.is_folder ? -1 : 1; });
       this.displayTree = sorted;
+      this._recompute();
     },
 
     // ── Undo delete ──
@@ -1862,9 +1870,9 @@ window._wsInitData = (function() {
     doFilter() {
       var q = (this.searchQuery || '').toLowerCase().trim();
       var ft = this.filterType || '';
-      if (!q && !ft && !this.tagFilter) { this.displayTree = [...this.tree]; return; }
-      // filteredTableItems is a computed getter — just trigger reactivity
+      if (!q && !ft && !this.tagFilter) { this.displayTree = [...this.tree]; this._computeFilteredTableItems(); return; }
       this.displayTree = [...this.tree];
+      this._computeFilteredTableItems();
     },
     filterByType(type) {
       this.filterType = (this.filterType === type) ? '' : type;