fix(e2e): derniers tests split-view + Forge - dropdown autocomplete, transferTab menu, drag natif

- search.js : le dropdown d autocomplete ne se rouvre plus 500ms apres un hide (la recherche le rouvrait et bloquait les clics toolbar - test Forge)

- ui.js + pane-manager.js : le split via menu contextuel ne transfert plus l onglet en synchrone (vidait le pane source -> auto-collapse -> grid disparu)

- split-view.spec.js : navigation clavier attend la copie asynchrone (setTimeout 150ms qui reactivait pane 0)

- split-view.spec.js : drag depuis l arbre via dragTo (drag natif HTML5)

frontend/js/pane-manager.js

@@ -542,17 +542,12 @@ function createPaneTabManager(paneId) {
         if (action === 'splitRight') {
           if (pm && pm._hasAnyTab()) {
             pm.splitRight();
-            // Transfer this specific tab to the new pane
-            const newPaneId = pm.panes.length - 1;
-            pm.transferTab(this.paneId, tabId, newPaneId);
             menu.remove(); return;
           }
         }
         else if (action === 'splitDown') {
           if (pm && pm._hasAnyTab()) {
             pm.splitDown();
-            const newPaneId = pm.panes.length - 1;
-            pm.transferTab(this.paneId, tabId, newPaneId);
             menu.remove(); return;
           }
         }

frontend/js/search.js

@@ -179,6 +179,9 @@ export const AutocompleteDropdown = {
   },
 
   show() {
+    // Après un hide() récent (ex: recherche lancée), on ignore le re-show
+    // du fetch de suggestions en attente — sinon le dropdown recouvre l'UI.
+    if (this._suppressShowUntil && Date.now() < this._suppressShowUntil) return;
     if (this._dropdown) this._dropdown.hidden = false;
   },
 
@@ -186,6 +189,7 @@ export const AutocompleteDropdown = {
     if (this._dropdown) this._dropdown.hidden = true;
     state.dropdownActiveIndex = -1;
     state.dropdownItems = [];
+    this._suppressShowUntil = Date.now() + 500;
   },
 
   isVisible() {

frontend/js/ui.js

@@ -2355,16 +2355,12 @@ export const TabManager = {
       if (action === "splitRight") {
         if (window.PaneManager && window.PaneManager._hasAnyTab && window.PaneManager._hasAnyTab()) {
           window.PaneManager.splitRight();
-          const newPaneId = window.PaneManager.panes.length - 1;
-          window.PaneManager.transferTab(0, tabId, newPaneId);
           menu.remove(); return;
         }
       }
       else if (action === "splitDown") {
         if (window.PaneManager && window.PaneManager._hasAnyTab && window.PaneManager._hasAnyTab()) {
           window.PaneManager.splitDown();
-          const newPaneId = window.PaneManager.panes.length - 1;
-          window.PaneManager.transferTab(0, tabId, newPaneId);
           menu.remove(); return;
         }
       }

tests/e2e/split-view.spec.js

@@ -235,20 +235,13 @@ test.describe('Split View — Tab Drag & Drop', () => {
     // Find a tree item
     const treeItem = page.locator('.tree-item[data-path="note2.md"]').first();
     if (await treeItem.isVisible()) {
-      // Drag from tree to pane 1's content area
+      // Drag from tree to pane 1's content area (dragTo = drag natif HTML5)
       const targetPane = page.locator('.pane-container').nth(1);
       const targetContent = targetPane.locator('.content-area');
-
-      const treeBox = await treeItem.boundingBox();
-      const targetBox = await targetContent.boundingBox();
-
-      if (treeBox && targetBox) {
-        await page.mouse.move(treeBox.x + treeBox.width / 2, treeBox.y + treeBox.height / 2);
-        await page.mouse.down();
-        await page.mouse.move(targetBox.x + targetBox.width / 2, targetBox.y + targetBox.height / 2, { steps: 10 });
-        await page.mouse.up();
+      try {
+        await treeItem.dragTo(targetContent, { timeout: 5000 });
         await page.waitForTimeout(500);
-      }
+      } catch (e) { /* drag not delivered — assertion below will fail */ }
     }
 
     // Pane 1 should have a tab now
@@ -403,6 +396,9 @@ test.describe('Split View — Keyboard Navigation', () => {
     await openFile(page, 'TestVault', 'note2.md');
     await page.keyboard.press('Control+Alt+\\');
     await page.waitForSelector('.pane-grid', { timeout: 3000 });
+    // Laisser la copie asynchrone de l'onglet actif se terminer (setTimeout 150ms
+    // dans _copyActiveTabToNewPane) — sinon elle réactive le pane 0 après la navigation.
+    await page.waitForTimeout(600);
 
     // Pane 0 should be active initially
     const pane0 = page.locator('.pane-container').nth(0);