improve tab (and other lexorank entities) sorting, ordering and reordering

apps/weblibre/drift_schemas/tabs/drift_schema_v8.json

@@ -0,0 +1,490 @@
+{
+  "_meta": {
+    "description": "This file contains a serialized version of schema entities for drift.",
+    "version": "1.3.0"
+  },
+  "options": {
+    "store_date_time_values_as_text": false
+  },
+  "entities": [
+    {
+      "id": 0,
+      "references": [],
+      "type": "table",
+      "data": {
+        "name": "container",
+        "was_declared_in_moor": true,
+        "columns": [
+          {
+            "name": "id",
+            "getter_name": "id",
+            "moor_type": "string",
+            "nullable": false,
+            "customConstraints": "PRIMARY KEY NOT NULL",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": [
+              "primary-key"
+            ]
+          },
+          {
+            "name": "name",
+            "getter_name": "name",
+            "moor_type": "string",
+            "nullable": true,
+            "customConstraints": "",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": []
+          },
+          {
+            "name": "color",
+            "getter_name": "color",
+            "moor_type": "int",
+            "nullable": false,
+            "customConstraints": "NOT NULL",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": [],
+            "type_converter": {
+              "dart_expr": "const ColorConverter()",
+              "dart_type_name": "Color"
+            }
+          },
+          {
+            "name": "metadata",
+            "getter_name": "metadata",
+            "moor_type": "string",
+            "nullable": true,
+            "customConstraints": "",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": [],
+            "type_converter": {
+              "dart_expr": "const ContainerMetadataConverter()",
+              "dart_type_name": "ContainerMetadata"
+            }
+          }
+        ],
+        "is_virtual": false,
+        "without_rowid": false,
+        "constraints": []
+      }
+    },
+    {
+      "id": 1,
+      "references": [
+        0
+      ],
+      "type": "table",
+      "data": {
+        "name": "tab",
+        "was_declared_in_moor": true,
+        "columns": [
+          {
+            "name": "id",
+            "getter_name": "id",
+            "moor_type": "string",
+            "nullable": false,
+            "customConstraints": "PRIMARY KEY NOT NULL",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": [
+              "primary-key"
+            ]
+          },
+          {
+            "name": "source",
+            "getter_name": "source",
+            "moor_type": "int",
+            "nullable": false,
+            "customConstraints": "NOT NULL",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": [],
+            "type_converter": {
+              "dart_expr": "const EnumIndexConverter<TabSource>(TabSource.values)",
+              "dart_type_name": "TabSource"
+            }
+          },
+          {
+            "name": "parent_id",
+            "getter_name": "parentId",
+            "moor_type": "string",
+            "nullable": true,
+            "customConstraints": "REFERENCES tab(id)ON DELETE SET NULL",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": []
+          },
+          {
+            "name": "container_id",
+            "getter_name": "containerId",
+            "moor_type": "string",
+            "nullable": true,
+            "customConstraints": "REFERENCES container(id)ON DELETE CASCADE",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": [
+              {
+                "foreign_key": {
+                  "to": {
+                    "table": "container",
+                    "column": "id"
+                  },
+                  "initially_deferred": false,
+                  "on_update": null,
+                  "on_delete": "cascade"
+                }
+              }
+            ]
+          },
+          {
+            "name": "order_key",
+            "getter_name": "orderKey",
+            "moor_type": "string",
+            "nullable": false,
+            "customConstraints": "NOT NULL",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": []
+          },
+          {
+            "name": "url",
+            "getter_name": "url",
+            "moor_type": "string",
+            "nullable": true,
+            "customConstraints": "",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": [],
+            "type_converter": {
+              "dart_expr": "const UriConverterNullable()",
+              "dart_type_name": "Uri?"
+            }
+          },
+          {
+            "name": "title",
+            "getter_name": "title",
+            "moor_type": "string",
+            "nullable": true,
+            "customConstraints": "",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": []
+          },
+          {
+            "name": "tab_mode",
+            "getter_name": "tabMode",
+            "moor_type": "int",
+            "nullable": false,
+            "customConstraints": "NOT NULL DEFAULT 0",
+            "default_dart": "const CustomExpression('0')",
+            "default_client_dart": null,
+            "dsl_features": [],
+            "type_converter": {
+              "dart_expr": "const EnumIndexConverter<TabModeDbValue>(TabModeDbValue.values)",
+              "dart_type_name": "TabModeDbValue"
+            }
+          },
+          {
+            "name": "isolation_context_id",
+            "getter_name": "isolationContextId",
+            "moor_type": "string",
+            "nullable": true,
+            "customConstraints": "",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": []
+          },
+          {
+            "name": "is_pinned",
+            "getter_name": "isPinned",
+            "moor_type": "bool",
+            "nullable": false,
+            "customConstraints": "NOT NULL DEFAULT 0",
+            "default_dart": "const CustomExpression('0')",
+            "default_client_dart": null,
+            "dsl_features": []
+          },
+          {
+            "name": "is_probably_readerable",
+            "getter_name": "isProbablyReaderable",
+            "moor_type": "bool",
+            "nullable": true,
+            "customConstraints": "",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": []
+          },
+          {
+            "name": "extracted_content_markdown",
+            "getter_name": "extractedContentMarkdown",
+            "moor_type": "string",
+            "nullable": true,
+            "customConstraints": "",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": []
+          },
+          {
+            "name": "extracted_content_plain",
+            "getter_name": "extractedContentPlain",
+            "moor_type": "string",
+            "nullable": true,
+            "customConstraints": "",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": []
+          },
+          {
+            "name": "full_content_markdown",
+            "getter_name": "fullContentMarkdown",
+            "moor_type": "string",
+            "nullable": true,
+            "customConstraints": "",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": []
+          },
+          {
+            "name": "full_content_plain",
+            "getter_name": "fullContentPlain",
+            "moor_type": "string",
+            "nullable": true,
+            "customConstraints": "",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": []
+          },
+          {
+            "name": "timestamp",
+            "getter_name": "timestamp",
+            "moor_type": "dateTime",
+            "nullable": false,
+            "customConstraints": "NOT NULL",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": []
+          }
+        ],
+        "is_virtual": false,
+        "without_rowid": false,
+        "constraints": [
+          "CHECK((tab_mode = 2 AND isolation_context_id IS NOT NULL)OR(tab_mode != 2 AND isolation_context_id IS NULL))"
+        ]
+      }
+    },
+    {
+      "id": 2,
+      "references": [
+        1
+      ],
+      "type": "index",
+      "data": {
+        "on": 1,
+        "name": "idx_tab_parent_container",
+        "sql": "CREATE INDEX idx_tab_parent_container ON tab(parent_id, container_id);",
+        "unique": false,
+        "columns": []
+      }
+    },
+    {
+      "id": 3,
+      "references": [
+        1
+      ],
+      "type": "table",
+      "data": {
+        "name": "tab_fts",
+        "was_declared_in_moor": true,
+        "columns": [
+          {
+            "name": "title",
+            "getter_name": "title",
+            "moor_type": "string",
+            "nullable": false,
+            "customConstraints": "",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": []
+          },
+          {
+            "name": "url",
+            "getter_name": "url",
+            "moor_type": "string",
+            "nullable": false,
+            "customConstraints": "",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": []
+          },
+          {
+            "name": "extracted_content_plain",
+            "getter_name": "extractedContentPlain",
+            "moor_type": "string",
+            "nullable": false,
+            "customConstraints": "",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": []
+          },
+          {
+            "name": "full_content_plain",
+            "getter_name": "fullContentPlain",
+            "moor_type": "string",
+            "nullable": false,
+            "customConstraints": "",
+            "default_dart": null,
+            "default_client_dart": null,
+            "dsl_features": []
+          }
+        ],
+        "is_virtual": true,
+        "create_virtual_stmt": "CREATE VIRTUAL TABLE \"tab_fts\" USING fts5(title, url, extracted_content_plain, full_content_plain, content=tab, tokenize=\"trigram\")",
+        "without_rowid": false,
+        "constraints": []
+      }
+    },
+    {
+      "id": 4,
+      "references": [
+        1
+      ],
+      "type": "trigger",
+      "data": {
+        "on": 1,
+        "references_in_body": [
+          1
+        ],
+        "name": "tab_maintain_parent_chain_on_delete",
+        "sql": "CREATE TRIGGER tab_maintain_parent_chain_on_delete BEFORE DELETE ON tab BEGIN\n  -- Update all children of the deleted row to point to its parent (grandparent)\n  -- Only if the grandparent exists, otherwise set to NULL\n  UPDATE tab\n  SET parent_id = CASE\n    WHEN OLD.parent_id IS NOT NULL AND\n         EXISTS(SELECT 1 FROM tab WHERE id = OLD.parent_id)\n    THEN OLD.parent_id\n    ELSE NULL\n  END\n  WHERE parent_id = OLD.id;\nEND;"
+      }
+    },
+    {
+      "id": 5,
+      "references": [
+        1,
+        3
+      ],
+      "type": "trigger",
+      "data": {
+        "on": 1,
+        "references_in_body": [
+          1,
+          3
+        ],
+        "name": "tab_after_insert",
+        "sql": "CREATE TRIGGER tab_after_insert AFTER INSERT ON tab BEGIN\n  INSERT INTO \n    tab_fts(rowid, title, url, extracted_content_plain, full_content_plain) \n    VALUES (new.rowid, new.title, new.url, new.extracted_content_plain, new.full_content_plain);\nEND;"
+      }
+    },
+    {
+      "id": 6,
+      "references": [
+        1,
+        3
+      ],
+      "type": "trigger",
+      "data": {
+        "on": 1,
+        "references_in_body": [
+          1,
+          3
+        ],
+        "name": "tab_after_delete",
+        "sql": "CREATE TRIGGER tab_after_delete AFTER DELETE ON tab BEGIN\n  INSERT INTO \n    tab_fts(tab_fts, rowid, title, url, extracted_content_plain, full_content_plain) \n    VALUES('delete', old.rowid, old.title, old.url, old.extracted_content_plain, old.full_content_plain);\nEND;"
+      }
+    },
+    {
+      "id": 7,
+      "references": [
+        1,
+        3
+      ],
+      "type": "trigger",
+      "data": {
+        "on": 1,
+        "references_in_body": [
+          1,
+          3
+        ],
+        "name": "tab_after_update",
+        "sql": "CREATE TRIGGER tab_after_update AFTER UPDATE ON tab BEGIN\n  INSERT INTO \n    tab_fts(tab_fts, rowid, title, url, extracted_content_plain, full_content_plain) \n    VALUES('delete', old.rowid, old.title, old.url, old.extracted_content_plain, old.full_content_plain);\n  INSERT INTO \n    tab_fts(rowid, title, url, extracted_content_plain, full_content_plain) \n    VALUES (new.rowid, new.title, new.url, new.extracted_content_plain, new.full_content_plain);\nEND;"
+      }
+    }
+  ],
+  "fixed_sql": [
+    {
+      "name": "container",
+      "sql": [
+        {
+          "dialect": "sqlite",
+          "sql": "CREATE TABLE IF NOT EXISTS \"container\" (\"id\" TEXT PRIMARY KEY NOT NULL, \"name\" TEXT, \"color\" INTEGER NOT NULL, \"metadata\" TEXT);"
+        }
+      ]
+    },
+    {
+      "name": "tab",
+      "sql": [
+        {
+          "dialect": "sqlite",
+          "sql": "CREATE TABLE IF NOT EXISTS \"tab\" (\"id\" TEXT PRIMARY KEY NOT NULL, \"source\" INTEGER NOT NULL, \"parent_id\" TEXT REFERENCES tab(id)ON DELETE SET NULL, \"container_id\" TEXT REFERENCES container(id)ON DELETE CASCADE, \"order_key\" TEXT NOT NULL, \"url\" TEXT, \"title\" TEXT, \"tab_mode\" INTEGER NOT NULL DEFAULT 0, \"isolation_context_id\" TEXT, \"is_pinned\" INTEGER NOT NULL DEFAULT 0, \"is_probably_readerable\" INTEGER, \"extracted_content_markdown\" TEXT, \"extracted_content_plain\" TEXT, \"full_content_markdown\" TEXT, \"full_content_plain\" TEXT, \"timestamp\" INTEGER NOT NULL, CHECK((tab_mode = 2 AND isolation_context_id IS NOT NULL)OR(tab_mode != 2 AND isolation_context_id IS NULL)));"
+        }
+      ]
+    },
+    {
+      "name": "idx_tab_parent_container",
+      "sql": [
+        {
+          "dialect": "sqlite",
+          "sql": "CREATE INDEX idx_tab_parent_container ON tab (parent_id, container_id)"
+        }
+      ]
+    },
+    {
+      "name": "tab_fts",
+      "sql": [
+        {
+          "dialect": "sqlite",
+          "sql": "CREATE VIRTUAL TABLE IF NOT EXISTS \"tab_fts\" USING fts5(title, url, extracted_content_plain, full_content_plain, content=tab, tokenize=\"trigram\");"
+        }
+      ]
+    },
+    {
+      "name": "tab_maintain_parent_chain_on_delete",
+      "sql": [
+        {
+          "dialect": "sqlite",
+          "sql": "CREATE TRIGGER tab_maintain_parent_chain_on_delete BEFORE DELETE ON tab BEGIN UPDATE tab SET parent_id = CASE WHEN OLD.parent_id IS NOT NULL AND EXISTS (SELECT 1 FROM tab WHERE id = OLD.parent_id) THEN OLD.parent_id ELSE NULL END WHERE parent_id = OLD.id;END"
+        }
+      ]
+    },
+    {
+      "name": "tab_after_insert",
+      "sql": [
+        {
+          "dialect": "sqlite",
+          "sql": "CREATE TRIGGER tab_after_insert AFTER INSERT ON tab BEGIN INSERT INTO tab_fts (\"rowid\", title, url, extracted_content_plain, full_content_plain) VALUES (new.\"rowid\", new.title, new.url, new.extracted_content_plain, new.full_content_plain);END"
+        }
+      ]
+    },
+    {
+      "name": "tab_after_delete",
+      "sql": [
+        {
+          "dialect": "sqlite",
+          "sql": "CREATE TRIGGER tab_after_delete AFTER DELETE ON tab BEGIN INSERT INTO tab_fts (tab_fts, \"rowid\", title, url, extracted_content_plain, full_content_plain) VALUES ('delete', old.\"rowid\", old.title, old.url, old.extracted_content_plain, old.full_content_plain);END"
+        }
+      ]
+    },
+    {
+      "name": "tab_after_update",
+      "sql": [
+        {
+          "dialect": "sqlite",
+          "sql": "CREATE TRIGGER tab_after_update AFTER UPDATE ON tab BEGIN INSERT INTO tab_fts (tab_fts, \"rowid\", title, url, extracted_content_plain, full_content_plain) VALUES ('delete', old.\"rowid\", old.title, old.url, old.extracted_content_plain, old.full_content_plain);INSERT INTO tab_fts (\"rowid\", title, url, extracted_content_plain, full_content_plain) VALUES (new.\"rowid\", new.title, new.url, new.extracted_content_plain, new.full_content_plain);END"
+        }
+      ]
+    }
+  ]
+}

apps/weblibre/lib/features/geckoview/domain/repositories/tab.dart

@@ -33,6 +33,7 @@ import 'package:weblibre/features/geckoview/domain/providers/selected_tab.dart';
 import 'package:weblibre/features/geckoview/domain/providers/tab_list.dart';
 import 'package:weblibre/features/geckoview/domain/providers/tab_state.dart';
 import 'package:weblibre/features/geckoview/features/browser/domain/services/browser_data.dart';
+import 'package:weblibre/features/geckoview/features/tabs/data/database/database.dart';
 import 'package:weblibre/features/geckoview/features/tabs/data/entities/isolation_context.dart';
 import 'package:weblibre/features/geckoview/features/tabs/data/entities/tab_mode.dart';
 import 'package:weblibre/features/geckoview/features/tabs/data/entities/tab_source.dart';
@@ -68,14 +69,6 @@ class TabRepository extends _$TabRepository {
     _tabFromIntent.remove(tabId);
   }
 
-  NewTabPosition _newTabPositionForParent(String? parentId) {
-    if (parentId != null) {
-      return NewTabPosition.first;
-    }
-
-    return ref.read(generalSettingsWithDefaultsProvider).newTabPosition;
-  }
-
   Future<String?> _resolveParentIdForContext({
     required String? parentId,
     required String? targetContextId,
@@ -132,7 +125,6 @@ class TabRepository extends _$TabRepository {
     final effectiveContextId = tabMode is IsolatedTabMode
         ? effectiveIsolationContextId
         : assignedContainer?.metadata.contextualIdentity;
-    final newTabPosition = _newTabPositionForParent(validatedParentId);
 
     final newTabId = await tabDao.upsertTabTransactional(
       () {
@@ -150,7 +142,6 @@ class TabRepository extends _$TabRepository {
         );
       },
       parentId: Value(validatedParentId),
-      newTabPosition: newTabPosition,
       containerId: Value(assignedContainer?.id),
       url: Value(url),
       tabMode: Value(tabMode),
@@ -215,7 +206,6 @@ class TabRepository extends _$TabRepository {
           tabId,
           parentId: Value(validatedParentId),
           source: TabSource.manual,
-          newTabPosition: _newTabPositionForParent(validatedParentId),
           containerId: Value(assignedContainer?.id),
           url: Value(Uri.tryParse(tab.url)),
           tabMode: Value(
@@ -257,6 +247,22 @@ class TabRepository extends _$TabRepository {
         ? duplicateIsolationContextId
         : containerData?.metadata.contextualIdentity;
 
+    // Place the duplicate as a sibling of the source — same parent — and
+    // insert it right after the source's full subtree, so existing
+    // children of the source are not split from their parent.
+    final sourceData = await tabDao
+        .getTabDataById(selectTabId)
+        .getSingleOrNull();
+    final sourceParentId = sourceData?.parentId;
+    final anchorTabId =
+        await tabDao
+            .lastSubtreeTabIdByOrderKey(
+              selectTabId,
+              containerId: containerData?.id,
+            )
+            .getSingleOrNull() ??
+        selectTabId;
+
     return await tabDao.upsertTabTransactional(
       () {
         return _tabsService.duplicateTab(
@@ -265,8 +271,8 @@ class TabRepository extends _$TabRepository {
           selectNewTab: selectTab,
         );
       },
-      parentId: const Value.absent(),
+      parentId: Value(sourceParentId),
-      newTabPosition: _newTabPositionForParent(null),
+      afterTabId: Value(anchorTabId),
       containerId: Value(containerData?.id),
       tabMode: Value(duplicateTabMode),
     );
@@ -319,15 +325,12 @@ class TabRepository extends _$TabRepository {
     String? containerId,
     bool skipContainerCheck = true,
   }) async {
-    final previousTabId = await ref
+    final previousTabId = await _adjacentVisibleTabByOrder(
-        .read(tabDatabaseProvider)
+      tabId,
-        .definitionsDrift
+      containerId: containerId,
-        .previousTabByOrderKey(
+      skipContainerCheck: skipContainerCheck,
-          tabId: tabId,
+      selectPrevious: true,
-          containerId: containerId,
+    );
-          skipContainerCheck: skipContainerCheck,
-        )
-        .getSingleOrNull();
 
     if (ref.mounted && previousTabId != null) {
       return selectTab(previousTabId);
@@ -341,15 +344,12 @@ class TabRepository extends _$TabRepository {
     String? containerId,
     bool skipContainerCheck = true,
   }) async {
-    final previousTabId = await ref
+    final previousTabId = await _adjacentVisibleTabByOrder(
-        .read(tabDatabaseProvider)
+      tabId,
-        .definitionsDrift
+      containerId: containerId,
-        .nextTabByOrderKey(
+      skipContainerCheck: skipContainerCheck,
-          tabId: tabId,
+      selectPrevious: false,
-          containerId: containerId,
+    );
-          skipContainerCheck: skipContainerCheck,
-        )
-        .getSingleOrNull();
 
     if (ref.mounted && previousTabId != null) {
       return selectTab(previousTabId);
@@ -383,7 +383,80 @@ class TabRepository extends _$TabRepository {
     return true;
   }
 
-  Future<void> _selectNextTab(String tabId) async {
+  Future<String?> _adjacentVisibleTabByOrder(
+    String tabId, {
+    required String? containerId,
+    required bool skipContainerCheck,
+    required bool selectPrevious,
+  }) {
+    // "Previous/next" here is interpreted relative to the *tab bar*
+    // direction, even when the user triggered the navigation from the tab
+    // tray (which has its own `tabListDirection`). If the two settings
+    // disagree, "next tab" while looking at the tray flows by tab-bar
+    // direction. Treat as intentional — keyboard / gesture navigation is
+    // anchored to the bar's mental model.
+    final newestFirst =
+        ref.read(generalSettingsWithDefaultsProvider).tabBarDirection ==
+        TabBarDirection.newestFirst;
+    final TabDatabase tabDatabase = ref.read(tabDatabaseProvider);
+    final definitions = tabDatabase.definitionsDrift;
+
+    if (newestFirst == selectPrevious) {
+      return definitions
+          .nextTabByOrderKey(
+            tabId: tabId,
+            containerId: containerId,
+            skipContainerCheck: skipContainerCheck,
+          )
+          .getSingleOrNull();
+    }
+
+    return definitions
+        .previousTabByOrderKey(
+          tabId: tabId,
+          containerId: containerId,
+          skipContainerCheck: skipContainerCheck,
+        )
+        .getSingleOrNull();
+  }
+
+  Future<String?> _nearestAvailableVisibleTabByOrder(
+    String tabId, {
+    required String? containerId,
+    required Set<String> excludedTabIds,
+  }) async {
+    Future<String?> walkDirection({required bool selectPrevious}) async {
+      var candidate = await _adjacentVisibleTabByOrder(
+        tabId,
+        containerId: containerId,
+        skipContainerCheck: false,
+        selectPrevious: selectPrevious,
+      );
+
+      while (candidate != null) {
+        if (!excludedTabIds.contains(candidate)) {
+          return candidate;
+        }
+
+        candidate = await _adjacentVisibleTabByOrder(
+          candidate,
+          containerId: containerId,
+          skipContainerCheck: false,
+          selectPrevious: selectPrevious,
+        );
+      }
+
+      return null;
+    }
+
+    return await walkDirection(selectPrevious: true) ??
+        await walkDirection(selectPrevious: false);
+  }
+
+  Future<void> _selectNextTab(
+    String tabId, {
+    Set<String> excludedTabIds = const {},
+  }) async {
     final tabState = ref.read(tabStatesProvider)[tabId];
 
     final currentContainerId = await ref
@@ -395,13 +468,20 @@ class TabRepository extends _$TabRepository {
     final sameContainerTabs = await ref
         .read(containerRepositoryProvider.notifier)
         .getContainerTabIds(currentContainerId)
-        .then((tabs) => tabs.where((tab) => tab != tabId).toList());
+        .then(
+          (tabs) => tabs
+              .where((tab) => tab != tabId && !excludedTabIds.contains(tab))
+              .toList(),
+        );
 
     if (!ref.mounted) return;
 
     // Priority 1: Check for parent tab first
     if (tabState?.parentId != null) {
-      return _tabsService.selectTab(tabId: tabState!.parentId!);
+      final parentId = tabState!.parentId!;
+      if (!excludedTabIds.contains(parentId)) {
+        return _tabsService.selectTab(tabId: parentId);
+      }
     }
 
     // Priority 2: Check for previous tab by timestamp
@@ -419,34 +499,14 @@ class TabRepository extends _$TabRepository {
 
     if (!ref.mounted) return;
 
-    final previousOrderedTabId = await ref
+    final orderedNeighborTabId = await _nearestAvailableVisibleTabByOrder(
-        .read(tabDatabaseProvider)
+      tabId,
-        .definitionsDrift
+      containerId: currentContainerId,
-        .previousTabByOrderKey(
+      excludedTabIds: excludedTabIds,
-          tabId: tabId,
+    );
-          containerId: currentContainerId,
-          skipContainerCheck: false,
-        )
-        .getSingleOrNull();
 
-    if (previousOrderedTabId != null) {
+    if (orderedNeighborTabId != null) {
-      return _tabsService.selectTab(tabId: previousOrderedTabId);
+      return _tabsService.selectTab(tabId: orderedNeighborTabId);
-    }
-
-    if (!ref.mounted) return;
-
-    final nextOrderedTabId = await ref
-        .read(tabDatabaseProvider)
-        .definitionsDrift
-        .nextTabByOrderKey(
-          tabId: tabId,
-          containerId: currentContainerId,
-          skipContainerCheck: false,
-        )
-        .getSingleOrNull();
-
-    if (nextOrderedTabId != null) {
-      return _tabsService.selectTab(tabId: nextOrderedTabId);
     }
 
     if (!ref.mounted) return;
@@ -454,7 +514,11 @@ class TabRepository extends _$TabRepository {
     final unassignedTabs = await ref
         .read(containerRepositoryProvider.notifier)
         .getContainerTabIds(null)
-        .then((tabs) => tabs.where((tab) => tab != tabId).toList());
+        .then(
+          (tabs) => tabs
+              .where((tab) => tab != tabId && !excludedTabIds.contains(tab))
+              .toList(),
+        );
 
     if (unassignedTabs.isNotEmpty) {
       return _tabsService.selectTab(tabId: unassignedTabs.first);
@@ -474,7 +538,11 @@ class TabRepository extends _$TabRepository {
       (container) => ref
           .read(containerRepositoryProvider.notifier)
           .getContainerTabIds(container.id)
-          .then((tabs) => tabs.where((tab) => tab != tabId).toList()),
+          .then(
+            (tabs) => tabs
+                .where((tab) => tab != tabId && !excludedTabIds.contains(tab))
+                .toList(),
+          ),
     );
 
     if (nextContainerTabs.isNotEmpty) {
@@ -493,6 +561,8 @@ class TabRepository extends _$TabRepository {
         await _selectNextTab(tabId);
       }
 
+      await _preservePromotedChildOrderOnClose([tabId]);
+
       await _tabsService.removeTab(tabId: tabId);
 
       // Queue isolation cleanup — actual cleanup runs after syncTabs
@@ -517,13 +587,22 @@ class TabRepository extends _$TabRepository {
 
       final selectedTab = ref.read(selectedTabProvider);
       if (selectedTab.mapNotNull(tabIds.contains) ?? false) {
-        await _selectNextTab(selectedTab!);
+        await _selectNextTab(selectedTab!, excludedTabIds: tabIds.toSet());
       }
 
+      await _preservePromotedChildOrderOnClose(tabIds);
+
       await _tabsService.removeTabs(ids: tabIds);
     });
   }
 
+  Future<void> _preservePromotedChildOrderOnClose(List<String> tabIds) {
+    return ref
+        .read(tabDatabaseProvider)
+        .tabDao
+        .preservePromotedChildOrderOnClose(tabIds);
+  }
+
   /// Clears Gecko browsing data and removes proxy alias for an isolation
   /// context if no more tabs share it.
   Future<void> _cleanupIsolationContextIfEmpty(String contextId) async {
@@ -638,7 +717,6 @@ class TabRepository extends _$TabRepository {
           tabId,
           parentId: const Value.absent(),
           source: TabSource.addedEvent,
-          newTabPosition: _newTabPositionForParent(null),
           containerId: Value(containerId),
         );
       },

apps/weblibre/lib/features/geckoview/domain/repositories/tab.g.dart

@@ -41,7 +41,7 @@ final class TabRepositoryProvider
   }
 }
 
-String _$tabRepositoryHash() => r'ce4ac2f2efbb859ba66e98c6e6d21f8205d9b4ed';
+String _$tabRepositoryHash() => r'4c5bda4d0ddcc66cfa420d3c2ca97db42b73b878';
 
 abstract class _$TabRepository extends $Notifier<void> {
   void build();

apps/weblibre/lib/features/geckoview/features/browser/domain/entities/tab_view_filter_options.dart

@@ -86,6 +86,8 @@ class TabViewFilterOptions with FastEquatable {
   final TabTypeFilter tabTypeFilter;
   final TabSortType sortType;
   final bool sortPinnedFirst;
+  @JsonKey(defaultValue: true)
+  final bool showHierarchicalTabs;
   @DateTimeRangeConverter()
   final DateTimeRange<DateTime>? dateRange;
   final TabQuickInterval? quickInterval;
@@ -94,6 +96,7 @@ class TabViewFilterOptions with FastEquatable {
     required this.tabTypeFilter,
     required this.sortType,
     required this.sortPinnedFirst,
+    required this.showHierarchicalTabs,
     required this.dateRange,
     required this.quickInterval,
   });
@@ -103,6 +106,7 @@ class TabViewFilterOptions with FastEquatable {
         tabTypeFilter: TabTypeFilter.all,
         sortType: TabSortType.manual,
         sortPinnedFirst: true,
+        showHierarchicalTabs: true,
         dateRange: null,
         quickInterval: null,
       );
@@ -132,6 +136,7 @@ class TabViewFilterOptions with FastEquatable {
     tabTypeFilter,
     sortType,
     sortPinnedFirst,
+    showHierarchicalTabs,
     dateRange,
     quickInterval,
   ];

apps/weblibre/lib/features/geckoview/features/browser/domain/entities/tab_view_filter_options.g.dart

@@ -13,6 +13,8 @@ abstract class _$TabViewFilterOptionsCWProxy {
 
   TabViewFilterOptions sortPinnedFirst(bool sortPinnedFirst);
 
+  TabViewFilterOptions showHierarchicalTabs(bool showHierarchicalTabs);
+
   TabViewFilterOptions dateRange(DateTimeRange<DateTime>? dateRange);
 
   TabViewFilterOptions quickInterval(TabQuickInterval? quickInterval);
@@ -28,6 +30,7 @@ abstract class _$TabViewFilterOptionsCWProxy {
     TabTypeFilter tabTypeFilter,
     TabSortType sortType,
     bool sortPinnedFirst,
+    bool showHierarchicalTabs,
     DateTimeRange<DateTime>? dateRange,
     TabQuickInterval? quickInterval,
   });
@@ -53,6 +56,10 @@ class _$TabViewFilterOptionsCWProxyImpl
   TabViewFilterOptions sortPinnedFirst(bool sortPinnedFirst) =>
       call(sortPinnedFirst: sortPinnedFirst);
 
+  @override
+  TabViewFilterOptions showHierarchicalTabs(bool showHierarchicalTabs) =>
+      call(showHierarchicalTabs: showHierarchicalTabs);
+
   @override
   TabViewFilterOptions dateRange(DateTimeRange<DateTime>? dateRange) =>
       call(dateRange: dateRange);
@@ -73,6 +80,7 @@ class _$TabViewFilterOptionsCWProxyImpl
     Object? tabTypeFilter = const $CopyWithPlaceholder(),
     Object? sortType = const $CopyWithPlaceholder(),
     Object? sortPinnedFirst = const $CopyWithPlaceholder(),
+    Object? showHierarchicalTabs = const $CopyWithPlaceholder(),
     Object? dateRange = const $CopyWithPlaceholder(),
     Object? quickInterval = const $CopyWithPlaceholder(),
   }) {
@@ -92,6 +100,12 @@ class _$TabViewFilterOptionsCWProxyImpl
           ? _value.sortPinnedFirst
           // ignore: cast_nullable_to_non_nullable
           : sortPinnedFirst as bool,
+      showHierarchicalTabs:
+          showHierarchicalTabs == const $CopyWithPlaceholder() ||
+              showHierarchicalTabs == null
+          ? _value.showHierarchicalTabs
+          // ignore: cast_nullable_to_non_nullable
+          : showHierarchicalTabs as bool,
       dateRange: dateRange == const $CopyWithPlaceholder()
           ? _value.dateRange
           // ignore: cast_nullable_to_non_nullable
@@ -122,6 +136,7 @@ TabViewFilterOptions _$TabViewFilterOptionsFromJson(
   tabTypeFilter: $enumDecode(_$TabTypeFilterEnumMap, json['tabTypeFilter']),
   sortType: $enumDecode(_$TabSortTypeEnumMap, json['sortType']),
   sortPinnedFirst: json['sortPinnedFirst'] as bool,
+  showHierarchicalTabs: json['showHierarchicalTabs'] as bool? ?? true,
   dateRange: const DateTimeRangeConverter().fromJson(
     json['dateRange'] as Map<String, dynamic>?,
   ),
@@ -137,6 +152,7 @@ Map<String, dynamic> _$TabViewFilterOptionsToJson(
   'tabTypeFilter': _$TabTypeFilterEnumMap[instance.tabTypeFilter]!,
   'sortType': _$TabSortTypeEnumMap[instance.sortType]!,
   'sortPinnedFirst': instance.sortPinnedFirst,
+  'showHierarchicalTabs': instance.showHierarchicalTabs,
   'dateRange': const DateTimeRangeConverter().toJson(instance.dateRange),
   'quickInterval': _$TabQuickIntervalEnumMap[instance.quickInterval],
 };

apps/weblibre/lib/features/geckoview/features/browser/domain/providers.dart

@@ -35,6 +35,7 @@ import 'package:weblibre/features/geckoview/features/browser/domain/entities/tab
 import 'package:weblibre/features/geckoview/features/browser/presentation/controllers/tab_view_controllers.dart';
 import 'package:weblibre/features/geckoview/features/history/domain/repositories/history.dart';
 import 'package:weblibre/features/geckoview/features/search/domain/entities/tab_preview.dart';
+import 'package:weblibre/features/geckoview/features/tabs/data/database/definitions.drift.dart';
 import 'package:weblibre/features/geckoview/features/tabs/data/entities/container_filter.dart';
 import 'package:weblibre/features/geckoview/features/tabs/data/entities/tab_entity.dart';
 import 'package:weblibre/features/geckoview/features/tabs/data/models/container_data.dart';
@@ -59,7 +60,13 @@ bool canManualTabReorder(Ref ref) {
     ).select((value) => (value.value?.query ?? '').isNotEmpty),
   );
 
-  return !filterOptions.hasActiveFilter && !hasActiveSearch;
+  // sortPinnedFirst partitions the rendered list into pinned/unpinned
+  // sections that don't reflect storage order_key ordering. A drag would
+  // compute anchors across the partition boundary and silently snap the
+  // moved tab into the wrong section once the stream re-renders.
+  return !filterOptions.hasActiveFilter &&
+      !hasActiveSearch &&
+      !filterOptions.sortPinnedFirst;
 }
 
 @Riverpod(keepAlive: true)
@@ -239,6 +246,10 @@ selectedContainerTabStatesWithContainer(Ref ref) {
         ),
   ];
 
+  final tabBarDirection = ref.watch(
+    generalSettingsWithDefaultsProvider.select((s) => s.tabBarDirection),
+  );
+
   items.sort((a, b) {
     final aPinned = pinnedTabIds?.contains(a.$1.id) ?? false;
     final bPinned = pinnedTabIds?.contains(b.$1.id) ?? false;
@@ -249,7 +260,10 @@ selectedContainerTabStatesWithContainer(Ref ref) {
 
     final aOrderKey = orderKeys[a.$1.id] ?? '';
     final bOrderKey = orderKeys[b.$1.id] ?? '';
-    return aOrderKey.compareTo(bOrderKey);
+    // Root tabs always append (trailing key), so ascending = oldest first.
+    return tabBarDirection == TabBarDirection.newestFirst
+        ? bOrderKey.compareTo(aOrderKey)
+        : aOrderKey.compareTo(bOrderKey);
   });
 
   return EquatableValue(items);
@@ -273,9 +287,23 @@ EquatableValue<List<TabStateWithContainer>> quickTabSwitcherTabStates(
       ref.watch(selectedContainerTabStatesWithContainerProvider).value,
   };
 
+  // `containerTabs` already had `tabBarDirection` applied during its sort.
+  // For `lastUsedTabs` the upstream `fifoTabStates` is MRU-first (timestamp
+  // desc); honour the same direction setting here so the user's choice
+  // takes effect in the default switcher mode too.
+  final tabBarDirection = ref.watch(
+    generalSettingsWithDefaultsProvider.select((s) => s.tabBarDirection),
+  );
+
   return EquatableValue(switch (effectiveMode) {
-    QuickTabSwitcherMode.lastUsedTabs =>
+    QuickTabSwitcherMode.lastUsedTabs => () {
-      tabStates.where((state) => state.$1.id != selectedTabId).toList(),
+      final filtered = tabStates
+          .where((state) => state.$1.id != selectedTabId)
+          .toList();
+      return tabBarDirection == TabBarDirection.oldestFirst
+          ? filtered.reversed.toList()
+          : filtered;
+    }(),
     QuickTabSwitcherMode.containerTabs => tabStates,
   });
 }
@@ -587,11 +615,24 @@ EquatableValue<List<TabEntity>> seamlessFilteredTabEntities(
       ? ref.watch(watchTabTimestampsProvider.select((value) => value.value))
       : null;
 
+  final tabListDirection = ref.watch(
+    generalSettingsWithDefaultsProvider.select((s) => s.tabListDirection),
+  );
+
+  // Root tabs are always inserted with a trailing LexoRank key, so the
+  // database order (ascending order_key) is oldest-first. Flip to
+  // newest-first when the user selects that direction.
+  List<TabEntity> applyDirection(List<TabEntity> entities) {
+    return tabListDirection == TabListDirection.newestFirst
+        ? entities.reversed.toList()
+        : entities;
+  }
+
   if (tabSearchResults == null) {
     if (filterOptions.hasActiveFilter || pinnedTabIds.isNotEmpty) {
       return EquatableValue(
         _applyTabFiltersAndSort(
-          availableTabs.value,
+          applyDirection(availableTabs.value),
           filterOptions,
           tabStates,
           pinnedTabIds,
@@ -600,7 +641,7 @@ EquatableValue<List<TabEntity>> seamlessFilteredTabEntities(
       );
     }
 
-    return availableTabs;
+    return EquatableValue(applyDirection(availableTabs.value));
   }
 
   final searchFiltered = tabSearchResults
@@ -624,6 +665,7 @@ EquatableValue<List<TabEntity>> seamlessFilteredTabEntities(
   }
 
   return EquatableValue(searchFiltered);
+  // Search results retain the search-relevance ordering — no direction flip.
 }
 
 @Riverpod()
@@ -671,6 +713,345 @@ EquatableValue<List<TabPreview>> filteredTabPreviews(
   );
 }
 
+/// Grouped flat-list rendering for the list and grid views.
+///
+/// Parent rows always render before their descendants. [TabListDirection]
+/// applies both to root group ordering and to sibling ordering below each
+/// parent, so parent-child pairs stay together while child order still follows
+/// the configured direction.
+///
+/// Returns `null` when the input data is not yet available (loading).
+@Riverpod()
+EquatableValue<List<TabListItemEntity>> groupedTabListItems(
+  Ref ref, {
+  required String? containerId,
+}) {
+  final tabsWithRoot = ref.watch(
+    watchTabsWithRootAndDepthProvider(
+      containerId,
+    ).select((value) => value.value),
+  );
+  if (tabsWithRoot == null) {
+    return EquatableValue(const []);
+  }
+
+  final tabList = ref.watch(tabListProvider);
+  final tabStates = ref.watch(tabStatesProvider);
+  final filterOptions = ref.watch(tabViewFilterControllerProvider);
+  final pinnedTabIds = ref.watch(
+    watchPinnedTabIdsProvider.select(
+      (value) => value.value ?? const <String>{},
+    ),
+  );
+  final tabListDirection = ref.watch(
+    generalSettingsWithDefaultsProvider.select((s) => s.tabListDirection),
+  );
+  final collapsedGroups = ref.watch(collapsedGroupsProvider);
+
+  final needsTimestamps =
+      filterOptions.effectiveDateRange != null ||
+      filterOptions.sortType.sortField == SortField.dateAsc ||
+      filterOptions.sortType.sortField == SortField.dateDesc;
+  final tabTimestamps = needsTimestamps
+      ? ref.watch(watchTabTimestampsProvider.select((value) => value.value))
+      : null;
+
+  // Index every row from the CTE — we need the full graph to walk ancestor
+  // chains even when intermediate ancestors fail the filter.
+  final byId = {for (final row in tabsWithRoot) row.id: row};
+
+  // Filter to tabs that exist in the engine session list and pass the
+  // tab-type / date-range filter. Filtering is applied to *individual* tabs.
+  final available = tabsWithRoot
+      .where((row) => tabList.value.contains(row.id))
+      .where(
+        (row) => filterOptions.matchesTab(
+          tabStates[row.id]?.tabMode,
+          tabTimestamps?[row.id],
+        ),
+      )
+      .toList();
+
+  if (available.isEmpty) {
+    return EquatableValue(const []);
+  }
+
+  final visibleIds = {for (final row in available) row.id};
+
+  // Map every visible row to the closest visible ancestor (its effective
+  // root). When the original root is filtered out we walk up the chain via
+  // parent_id until we either find a visible ancestor or fall off the top —
+  // in the latter case the row becomes its own root. This keeps subtrees
+  // grouped under whichever ancestor remains visible.
+  String effectiveRootFor(TabsWithRootAndDepthResult row) {
+    var effectiveRoot = row;
+    var current = row;
+    while (true) {
+      final parentId = current.parentId;
+      if (parentId == null) return effectiveRoot.id;
+      final parent = byId[parentId];
+      if (parent == null) return effectiveRoot.id;
+      if (visibleIds.contains(parent.id)) {
+        // Climb to the topmost visible ancestor so siblings collapse into a
+        // single group rather than fragmenting.
+        effectiveRoot = parent;
+        current = parent;
+        continue;
+      }
+      // Skip filtered-out ancestor and keep climbing.
+      current = parent;
+    }
+  }
+
+  // Recompute depth relative to the effective root (so indentation stays
+  // sensible after filtered-out ancestors collapse out).
+  int depthFromRoot(TabsWithRootAndDepthResult row, String rootId) {
+    var depth = 0;
+    var current = row;
+    while (current.id != rootId) {
+      final parentId = current.parentId;
+      if (parentId == null) return depth;
+      final parent = byId[parentId];
+      if (parent == null) return depth;
+      if (visibleIds.contains(parent.id)) {
+        depth++;
+      }
+      current = parent;
+    }
+    return depth;
+  }
+
+  final byRoot = <String, List<_GroupedRow>>{};
+  for (final row in available) {
+    final rootId = effectiveRootFor(row);
+    byRoot
+        .putIfAbsent(rootId, () => [])
+        .add(_GroupedRow(row: row, depth: depthFromRoot(row, rootId)));
+  }
+
+  // Build a list of group records to sort across.
+  final sortField = filterOptions.sortType.sortField;
+  final groupRecords = <_TabGroupRecord>[];
+  for (final entry in byRoot.entries) {
+    final rootMember = entry.value.firstWhere((r) => r.row.id == entry.key);
+    final root = rootMember.row;
+    final state = tabStates[root.id];
+    final timestamp = tabTimestamps?[root.id];
+    groupRecords.add(
+      _TabGroupRecord(
+        rootId: root.id,
+        rootOrderKey: root.orderKey,
+        root: rootMember,
+        members: entry.value,
+        isPinned: pinnedTabIds.contains(root.id),
+        titleKey:
+            sortField == SortField.titleAsc || sortField == SortField.titleDesc
+            ? (state?.titleOrAuthority ?? '').toLowerCase()
+            : null,
+        urlKey: sortField == SortField.urlAsc || sortField == SortField.urlDesc
+            ? (state?.url.toString() ?? '')
+            : null,
+        dateKey:
+            sortField == SortField.dateAsc || sortField == SortField.dateDesc
+            ? (timestamp ?? DateTime(0))
+            : null,
+      ),
+    );
+  }
+
+  groupRecords.sort((a, b) {
+    if (filterOptions.sortPinnedFirst && a.isPinned != b.isPinned) {
+      return a.isPinned ? -1 : 1;
+    }
+
+    if (sortField != null) {
+      final cmp = switch (sortField) {
+        SortField.titleAsc => a.titleKey!.compareTo(b.titleKey!),
+        SortField.titleDesc => b.titleKey!.compareTo(a.titleKey!),
+        SortField.urlAsc => a.urlKey!.compareTo(b.urlKey!),
+        SortField.urlDesc => b.urlKey!.compareTo(a.urlKey!),
+        SortField.dateAsc => a.dateKey!.compareTo(b.dateKey!),
+        SortField.dateDesc => b.dateKey!.compareTo(a.dateKey!),
+      };
+      if (cmp != 0) return cmp;
+    }
+
+    return a.rootOrderKey.compareTo(b.rootOrderKey);
+  });
+
+  // Direction applies to the order of root groups here. Sibling order below
+  // each parent is handled during recursive flattening.
+  // When no explicit sortField is active, oldest-first is the natural
+  // order_key ASC; newest-first reverses the group list. Pinned and
+  // unpinned partitions are reversed independently so pinned-first stays
+  // intact while still flipping the relative order within each partition.
+  if (sortField == null && tabListDirection == TabListDirection.newestFirst) {
+    if (filterOptions.sortPinnedFirst) {
+      final pinned = groupRecords.where((g) => g.isPinned).toList()
+        ..sort((a, b) => b.rootOrderKey.compareTo(a.rootOrderKey));
+      final unpinned = groupRecords.where((g) => !g.isPinned).toList()
+        ..sort((a, b) => b.rootOrderKey.compareTo(a.rootOrderKey));
+      groupRecords
+        ..clear()
+        ..addAll(pinned)
+        ..addAll(unpinned);
+    } else {
+      final reversed = groupRecords.reversed.toList();
+      groupRecords
+        ..clear()
+        ..addAll(reversed);
+    }
+  }
+
+  // Flatten according to expansion state.
+  final result = <TabListItemEntity>[];
+  for (final group in groupRecords) {
+    if (group.members.length == 1) {
+      final only = group.root.row;
+      result.add(
+        TabListStandaloneItem(
+          tabId: only.id,
+          orderKey: only.orderKey,
+          containerId: containerId,
+        ),
+      );
+      continue;
+    }
+
+    final root = group.root.row;
+    result.add(
+      TabListParentGroup(
+        tabId: root.id,
+        orderKey: root.orderKey,
+        containerId: containerId,
+        childCount: group.members.length - 1,
+      ),
+    );
+
+    if (collapsedGroups.contains(root.id)) {
+      continue;
+    }
+
+    final childrenByVisibleParent = <String, List<_GroupedRow>>{};
+    for (final member in group.members) {
+      if (member.row.id == root.id) {
+        continue;
+      }
+
+      final visibleParentId = _nearestVisibleParentId(
+        member.row,
+        root.id,
+        byId,
+        visibleIds,
+      );
+      childrenByVisibleParent
+          .putIfAbsent(visibleParentId, () => [])
+          .add(member);
+    }
+
+    // Children are always sorted by storage `order_key` (optionally reversed
+    // for newest-first) — even when an explicit `sortField` (title/url/date)
+    // is active. The explicit sort applies only to root groups; descendants
+    // remain in insertion order so a parent's children stay grouped in the
+    // order they were opened rather than alphabetically interleaving across
+    // siblings.
+    for (final children in childrenByVisibleParent.values) {
+      children.sort((a, b) {
+        final cmp = a.row.orderKey.compareTo(b.row.orderKey);
+        return tabListDirection == TabListDirection.newestFirst ? -cmp : cmp;
+      });
+    }
+
+    void addChildren(String parentId) {
+      for (final member
+          in childrenByVisibleParent[parentId] ?? const <_GroupedRow>[]) {
+        final child = member.row;
+        final grandchildren =
+            childrenByVisibleParent[child.id] ?? const <_GroupedRow>[];
+        result.add(
+          TabListChildItem(
+            tabId: child.id,
+            orderKey: child.orderKey,
+            containerId: containerId,
+            parentId: parentId,
+            rootId: root.id,
+            depth: member.depth,
+            childCount: grandchildren.length,
+          ),
+        );
+        // Respect per-node collapse: collapsing an intermediate child hides
+        // its descendants while keeping siblings of the parent visible.
+        if (!collapsedGroups.contains(child.id)) {
+          addChildren(child.id);
+        }
+      }
+    }
+
+    addChildren(root.id);
+  }
+
+  return EquatableValue(result);
+}
+
+String _nearestVisibleParentId(
+  TabsWithRootAndDepthResult row,
+  String rootId,
+  Map<String, TabsWithRootAndDepthResult> byId,
+  Set<String> visibleIds,
+) {
+  var current = row;
+  final seen = <String>{row.id};
+
+  while (true) {
+    final parentId = current.parentId;
+    if (parentId == null) {
+      return rootId;
+    }
+    if (parentId == rootId) {
+      return rootId;
+    }
+
+    final parent = byId[parentId];
+    if (parent == null || !seen.add(parent.id)) {
+      return rootId;
+    }
+    if (visibleIds.contains(parent.id)) {
+      return parent.id;
+    }
+
+    current = parent;
+  }
+}
+
+class _GroupedRow {
+  final TabsWithRootAndDepthResult row;
+  final int depth;
+
+  _GroupedRow({required this.row, required this.depth});
+}
+
+class _TabGroupRecord {
+  final String rootId;
+  final String rootOrderKey;
+  final _GroupedRow root;
+  final List<_GroupedRow> members;
+  final bool isPinned;
+  final String? titleKey;
+  final String? urlKey;
+  final DateTime? dateKey;
+
+  _TabGroupRecord({
+    required this.rootId,
+    required this.rootOrderKey,
+    required this.root,
+    required this.members,
+    required this.isPinned,
+    required this.titleKey,
+    required this.urlKey,
+    required this.dateKey,
+  });
+}
+
 @Riverpod()
 class AppLinksModeNotifier extends _$AppLinksModeNotifier {
   final _service = GeckoEngineSettingsService();

apps/weblibre/lib/features/geckoview/features/browser/domain/providers.g.dart

@@ -49,7 +49,7 @@ final class CanManualTabReorderProvider
 }
 
 String _$canManualTabReorderHash() =>
-    r'ba5d961933464b6e005d7945802908a9a4ae034b';
+    r'598bc67a750f45893ba555b9b7866499b1808896';
 
 @ProviderFor(SelectedBangTrigger)
 final selectedBangTriggerProvider = SelectedBangTriggerFamily._();
@@ -529,7 +529,7 @@ final class SelectedContainerTabStatesWithContainerProvider
 }
 
 String _$selectedContainerTabStatesWithContainerHash() =>
-    r'187e408857ddc5fe08f8e5344beb510c3c39abe1';
+    r'6b630cdfc589af6961d4c96c90d09bd107560f15';
 
 @ProviderFor(quickTabSwitcherTabStates)
 final quickTabSwitcherTabStatesProvider = QuickTabSwitcherTabStatesFamily._();
@@ -601,7 +601,7 @@ final class QuickTabSwitcherTabStatesProvider
 }
 
 String _$quickTabSwitcherTabStatesHash() =>
-    r'd83ea34d366238681baaad0b36699ee0742edc3d';
+    r'32e928b4596ef2388f8c0e4cfdcf8f3563a1e24a';
 
 final class QuickTabSwitcherTabStatesFamily extends $Family
     with
@@ -962,7 +962,7 @@ final class SeamlessFilteredTabEntitiesProvider
 }
 
 String _$seamlessFilteredTabEntitiesHash() =>
-    r'bc6833f975e9af3b2117268d7644dc56131c85a3';
+    r'79abca3ad2753af4482c0e3bcfa317a6f336ca17';
 
 final class SeamlessFilteredTabEntitiesFamily extends $Family
     with
@@ -1095,6 +1095,139 @@ final class FilteredTabPreviewsFamily extends $Family
   String toString() => r'filteredTabPreviewsProvider';
 }
 
+/// Grouped flat-list rendering for the list and grid views.
+///
+/// Parent rows always render before their descendants. [TabListDirection]
+/// applies both to root group ordering and to sibling ordering below each
+/// parent, so parent-child pairs stay together while child order still follows
+/// the configured direction.
+///
+/// Returns `null` when the input data is not yet available (loading).
+
+@ProviderFor(groupedTabListItems)
+final groupedTabListItemsProvider = GroupedTabListItemsFamily._();
+
+/// Grouped flat-list rendering for the list and grid views.
+///
+/// Parent rows always render before their descendants. [TabListDirection]
+/// applies both to root group ordering and to sibling ordering below each
+/// parent, so parent-child pairs stay together while child order still follows
+/// the configured direction.
+///
+/// Returns `null` when the input data is not yet available (loading).
+
+final class GroupedTabListItemsProvider
+    extends
+        $FunctionalProvider<
+          EquatableValue<List<TabListItemEntity>>,
+          EquatableValue<List<TabListItemEntity>>,
+          EquatableValue<List<TabListItemEntity>>
+        >
+    with $Provider<EquatableValue<List<TabListItemEntity>>> {
+  /// Grouped flat-list rendering for the list and grid views.
+  ///
+  /// Parent rows always render before their descendants. [TabListDirection]
+  /// applies both to root group ordering and to sibling ordering below each
+  /// parent, so parent-child pairs stay together while child order still follows
+  /// the configured direction.
+  ///
+  /// Returns `null` when the input data is not yet available (loading).
+  GroupedTabListItemsProvider._({
+    required GroupedTabListItemsFamily super.from,
+    required String? super.argument,
+  }) : super(
+         retry: null,
+         name: r'groupedTabListItemsProvider',
+         isAutoDispose: true,
+         dependencies: null,
+         $allTransitiveDependencies: null,
+       );
+
+  @override
+  String debugGetCreateSourceHash() => _$groupedTabListItemsHash();
+
+  @override
+  String toString() {
+    return r'groupedTabListItemsProvider'
+        ''
+        '($argument)';
+  }
+
+  @$internal
+  @override
+  $ProviderElement<EquatableValue<List<TabListItemEntity>>> $createElement(
+    $ProviderPointer pointer,
+  ) => $ProviderElement(pointer);
+
+  @override
+  EquatableValue<List<TabListItemEntity>> create(Ref ref) {
+    final argument = this.argument as String?;
+    return groupedTabListItems(ref, containerId: argument);
+  }
+
+  /// {@macro riverpod.override_with_value}
+  Override overrideWithValue(EquatableValue<List<TabListItemEntity>> value) {
+    return $ProviderOverride(
+      origin: this,
+      providerOverride:
+          $SyncValueProvider<EquatableValue<List<TabListItemEntity>>>(value),
+    );
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return other is GroupedTabListItemsProvider && other.argument == argument;
+  }
+
+  @override
+  int get hashCode {
+    return argument.hashCode;
+  }
+}
+
+String _$groupedTabListItemsHash() =>
+    r'48c7c971d95934afb48aa19b7400e208ee2f10e4';
+
+/// Grouped flat-list rendering for the list and grid views.
+///
+/// Parent rows always render before their descendants. [TabListDirection]
+/// applies both to root group ordering and to sibling ordering below each
+/// parent, so parent-child pairs stay together while child order still follows
+/// the configured direction.
+///
+/// Returns `null` when the input data is not yet available (loading).
+
+final class GroupedTabListItemsFamily extends $Family
+    with
+        $FunctionalFamilyOverride<
+          EquatableValue<List<TabListItemEntity>>,
+          String?
+        > {
+  GroupedTabListItemsFamily._()
+    : super(
+        retry: null,
+        name: r'groupedTabListItemsProvider',
+        dependencies: null,
+        $allTransitiveDependencies: null,
+        isAutoDispose: true,
+      );
+
+  /// Grouped flat-list rendering for the list and grid views.
+  ///
+  /// Parent rows always render before their descendants. [TabListDirection]
+  /// applies both to root group ordering and to sibling ordering below each
+  /// parent, so parent-child pairs stay together while child order still follows
+  /// the configured direction.
+  ///
+  /// Returns `null` when the input data is not yet available (loading).
+
+  GroupedTabListItemsProvider call({required String? containerId}) =>
+      GroupedTabListItemsProvider._(argument: containerId, from: this);
+
+  @override
+  String toString() => r'groupedTabListItemsProvider';
+}
+
 @ProviderFor(AppLinksModeNotifier)
 final appLinksModeProvider = AppLinksModeNotifierProvider._();
 

apps/weblibre/lib/features/geckoview/features/browser/features/contextual_toolbar/data/repositories/contextual_toolbar_config_repository.dart

@@ -50,20 +50,30 @@ class ContextualToolbarConfigRepository {
     return _dao.assignFallback(buttonId, fallbackId);
   }
 
-  Future<String> generateLeadingOrderKey() {
+  Future<String> generateLeadingOrderKey({required bool isVisible}) {
-    return _dao.generateLeadingOrderKey().getSingle();
+    return _dao.generateLeadingOrderKey(isVisible: isVisible).getSingle();
   }
 
-  Future<String> generateTrailingOrderKey() {
+  Future<String> generateTrailingOrderKey({required bool isVisible}) {
-    return _dao.generateTrailingOrderKey().getSingle();
+    return _dao.generateTrailingOrderKey(isVisible: isVisible).getSingle();
   }
 
-  Future<String?> generateOrderKeyAfterButtonId(String buttonId) {
+  Future<String?> generateOrderKeyAfterButtonId(
-    return _dao.generateOrderKeyAfterButtonId(buttonId).getSingleOrNull();
+    String buttonId, {
+    required bool isVisible,
+  }) {
+    return _dao
+        .generateOrderKeyAfterButtonId(buttonId, isVisible: isVisible)
+        .getSingleOrNull();
   }
 
-  Future<String> generateOrderKeyBeforeButtonId(String buttonId) {
+  Future<String> generateOrderKeyBeforeButtonId(
-    return _dao.generateOrderKeyBeforeButtonId(buttonId).getSingle();
+    String buttonId, {
+    required bool isVisible,
+  }) {
+    return _dao
+        .generateOrderKeyBeforeButtonId(buttonId, isVisible: isVisible)
+        .getSingle();
   }
 
   Future<void> seedMissingDefaults() {

apps/weblibre/lib/features/geckoview/features/browser/features/contextual_toolbar/presentation/toolbar_button_registry.dart

@@ -46,6 +46,7 @@ import 'package:weblibre/features/geckoview/features/browser/presentation/widget
 import 'package:weblibre/features/geckoview/features/find_in_page/presentation/controllers/find_in_page.dart';
 import 'package:weblibre/features/geckoview/features/readerview/presentation/controllers/readerable.dart';
 import 'package:weblibre/features/geckoview/features/tabs/data/entities/tab_mode.dart';
+import 'package:weblibre/features/geckoview/features/tabs/domain/repositories/tab.dart';
 import 'package:weblibre/features/settings/presentation/controllers/save_settings.dart';
 import 'package:weblibre/features/user/data/models/engine_settings.dart';
 import 'package:weblibre/features/user/domain/presentation/dialogs/quit_browser_dialog.dart';
@@ -673,6 +674,23 @@ class _CloseTabToolbarButton extends HookConsumerWidget {
             },
             child: const Text('Close from Same Host'),
           ),
+        MenuItemButton(
+          leadingIcon: const Icon(Icons.account_tree),
+          onPressed: () async {
+            final tabId = scope.selectedTabId;
+            if (tabId == null) return;
+            final descendants = await ref
+                .read(tabDataRepositoryProvider.notifier)
+                .getTabDescendants(tabId);
+            if (!context.mounted) return;
+
+            final subtreeIds = descendants.keys.toList();
+            if (subtreeIds.isNotEmpty) {
+              await closeTabsWithConfirmation(context, ref, subtreeIds);
+            }
+          },
+          child: const Text('Close Tab and Descendants'),
+        ),
       ],
       child: IconButton(
         onPressed: scope.isPreview

apps/weblibre/lib/features/geckoview/features/browser/presentation/controllers/tab_view_controllers.dart

@@ -80,6 +80,10 @@ class TabViewFilterController extends _$TabViewFilterController {
     state = state.copyWith(sortPinnedFirst: value);
   }
 
+  void setShowHierarchicalTabs(bool value) {
+    state = state.copyWith(showHierarchicalTabs: value);
+  }
+
   void setDateRange(DateTimeRange<DateTime>? range) {
     // ignore: avoid_redundant_argument_values
     state = state.copyWith(dateRange: range, quickInterval: null);
@@ -105,6 +109,25 @@ class TabViewFilterController extends _$TabViewFilterController {
   }
 }
 
+/// Tracks which parent groups are *collapsed* in the grouped list/grid views.
+///
+/// Stored as the collapsed set so groups default to expanded for fresh
+/// sessions. In-memory only — group expansion is treated as ephemeral UI
+/// state, not a persisted setting.
+@Riverpod(keepAlive: true)
+class CollapsedGroups extends _$CollapsedGroups {
+  @override
+  Set<String> build() => const {};
+
+  void toggle(String parentId) {
+    state = state.contains(parentId)
+        ? (state.toSet()..remove(parentId))
+        : (state.toSet()..add(parentId));
+  }
+
+  void expandAll() => state = const {};
+}
+
 @Riverpod()
 class TabsReorderableController extends _$TabsReorderableController {
   void toggle() {

apps/weblibre/lib/features/geckoview/features/browser/presentation/controllers/tab_view_controllers.g.dart

@@ -97,7 +97,7 @@ final class TabViewFilterControllerProvider
 }
 
 String _$tabViewFilterControllerHash() =>
-    r'95e8a03d60ebe05e0c5df38f810f951a4fe2ed78';
+    r'6f5d42761765c0135bf40953c574c17d141ffab2';
 
 @JsonPersist()
 abstract class _$TabViewFilterControllerBase
@@ -119,6 +119,80 @@ abstract class _$TabViewFilterControllerBase
   }
 }
 
+/// Tracks which parent groups are *collapsed* in the grouped list/grid views.
+///
+/// Stored as the collapsed set so groups default to expanded for fresh
+/// sessions. In-memory only — group expansion is treated as ephemeral UI
+/// state, not a persisted setting.
+
+@ProviderFor(CollapsedGroups)
+final collapsedGroupsProvider = CollapsedGroupsProvider._();
+
+/// Tracks which parent groups are *collapsed* in the grouped list/grid views.
+///
+/// Stored as the collapsed set so groups default to expanded for fresh
+/// sessions. In-memory only — group expansion is treated as ephemeral UI
+/// state, not a persisted setting.
+final class CollapsedGroupsProvider
+    extends $NotifierProvider<CollapsedGroups, Set<String>> {
+  /// Tracks which parent groups are *collapsed* in the grouped list/grid views.
+  ///
+  /// Stored as the collapsed set so groups default to expanded for fresh
+  /// sessions. In-memory only — group expansion is treated as ephemeral UI
+  /// state, not a persisted setting.
+  CollapsedGroupsProvider._()
+    : super(
+        from: null,
+        argument: null,
+        retry: null,
+        name: r'collapsedGroupsProvider',
+        isAutoDispose: false,
+        dependencies: null,
+        $allTransitiveDependencies: null,
+      );
+
+  @override
+  String debugGetCreateSourceHash() => _$collapsedGroupsHash();
+
+  @$internal
+  @override
+  CollapsedGroups create() => CollapsedGroups();
+
+  /// {@macro riverpod.override_with_value}
+  Override overrideWithValue(Set<String> value) {
+    return $ProviderOverride(
+      origin: this,
+      providerOverride: $SyncValueProvider<Set<String>>(value),
+    );
+  }
+}
+
+String _$collapsedGroupsHash() => r'f2434cc008720240513a41bd11eea6656aeb0c13';
+
+/// Tracks which parent groups are *collapsed* in the grouped list/grid views.
+///
+/// Stored as the collapsed set so groups default to expanded for fresh
+/// sessions. In-memory only — group expansion is treated as ephemeral UI
+/// state, not a persisted setting.
+
+abstract class _$CollapsedGroups extends $Notifier<Set<String>> {
+  Set<String> build();
+  @$mustCallSuper
+  @override
+  void runBuild() {
+    final ref = this.ref as $Ref<Set<String>, Set<String>>;
+    final element =
+        ref.element
+            as $ClassProviderElement<
+              AnyNotifier<Set<String>, Set<String>>,
+              Set<String>,
+              Object?,
+              Object?
+            >;
+    element.handleCreate(ref, build);
+  }
+}
+
 @ProviderFor(TabsReorderableController)
 final tabsReorderableControllerProvider = TabsReorderableControllerProvider._();
 

apps/weblibre/lib/features/geckoview/features/browser/presentation/utils/tab_view_reorder.dart

@@ -0,0 +1,395 @@
+/*
+ * Copyright (c) 2024-2026 Fabian Freund.
+ *
+ * This file is part of WebLibre
+ * (see https://weblibre.eu).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+import 'package:weblibre/core/logger.dart';
+import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/tab_view/tab_view_item.dart';
+import 'package:weblibre/features/geckoview/features/tabs/data/database/definitions.drift.dart';
+import 'package:weblibre/features/user/data/models/general_settings.dart';
+
+class TabViewReorderResult {
+  final List<String> movingTabIds;
+  final String? previousTabId;
+  final String? nextTabId;
+
+  const TabViewReorderResult({
+    required this.movingTabIds,
+    required this.previousTabId,
+    required this.nextTabId,
+  });
+}
+
+TabViewReorderResult? buildTabViewReorderResult({
+  required List<TabViewItem> visibleItems,
+  required List<TabsWithRootAndDepthResult> treeRows,
+  required Set<String> collapsedGroups,
+  required int oldIndex,
+  required int newIndex,
+  required TabListDirection tabListDirection,
+  required bool hierarchical,
+}) {
+  if (oldIndex < 0 || oldIndex >= visibleItems.length) {
+    logger.t(
+      'reorder refused: oldIndex $oldIndex out of range '
+      '(visibleItems.length=${visibleItems.length})',
+    );
+    return null;
+  }
+
+  final reordered = visibleItems.toList();
+  final movingItem = reordered.removeAt(oldIndex);
+
+  var insertIndex = newIndex;
+  if (insertIndex > oldIndex) {
+    insertIndex -= 1;
+  }
+  insertIndex = insertIndex.clamp(0, reordered.length);
+  reordered.insert(insertIndex, movingItem);
+
+  if (!hierarchical) {
+    final ordered = reordered.map((item) => item.tabId).toList();
+    return _resultFromOrderedIds(
+      movingTabIds: [movingItem.tabId],
+      orderedTabIds: tabListDirection == TabListDirection.newestFirst
+          // Rendering flips root group order for newest-first; convert the
+          // display order back to storage order before choosing anchors.
+          ? ordered.reversed.toList()
+          : ordered,
+    );
+  }
+
+  final rowsById = {for (final row in treeRows) row.id: row};
+  final parentById = {for (final row in treeRows) row.id: row.parentId};
+  // Build the parent → ordered-children index once and reuse for every
+  // _subtreeIds call below. _subtreeIds is invoked for the moving item plus
+  // every collapsed group encountered while flattening, so reusing this map
+  // turns N tree walks into N cheap lookups.
+  final childrenByParent = _buildChildrenByParent(rowsById, parentById);
+  final moveBlock = _subtreeIds(movingItem.tabId, rowsById, childrenByParent);
+  final moveBlockIds = moveBlock.toSet();
+
+  final withoutMovingItem = visibleItems.toList()..removeAt(oldIndex);
+  final targetBeforeId = insertIndex < withoutMovingItem.length
+      ? withoutMovingItem[insertIndex].tabId
+      : null;
+  if (targetBeforeId != null && moveBlockIds.contains(targetBeforeId)) {
+    logger.t(
+      'reorder refused: drop target is inside the moving subtree',
+    );
+    return null;
+  }
+
+  final remaining = [
+    for (final item in visibleItems)
+      if (!moveBlockIds.contains(item.tabId)) item,
+  ];
+  final requestedInsertIndex = targetBeforeId == null
+      ? remaining.length
+      : remaining.indexWhere((item) => item.tabId == targetBeforeId);
+  if (requestedInsertIndex < 0) {
+    logger.t(
+      'reorder refused: target $targetBeforeId not present in remaining list '
+      '(defensive)',
+    );
+    return null;
+  }
+
+  final parentScope = _parentScope(movingItem);
+  final resolvedInsertIndex = _resolveInsertIndexInParentScope(
+    remaining,
+    requestedInsertIndex,
+    parentScope,
+    parentById,
+  );
+  if (resolvedInsertIndex == null) {
+    logger.t(
+      'reorder snapped: no anchor for parent scope $parentScope — drop '
+      'rejected so the moving tab stays in its original parent',
+    );
+    return null;
+  }
+
+  final reorderedBlocks = remaining.toList()
+    ..insert(resolvedInsertIndex, movingItem);
+
+  final displayBlocks = <List<String>>[];
+  final emitted = <String>{};
+  for (final item in reorderedBlocks) {
+    if (emitted.contains(item.tabId)) {
+      continue;
+    }
+
+    final hasChildren =
+        item.parentGroup != null || (item.childItem?.childCount ?? 0) > 0;
+    final block = item.tabId == movingItem.tabId
+        ? moveBlock
+        : hasChildren && collapsedGroups.contains(item.tabId)
+        ? _subtreeIds(item.tabId, rowsById, childrenByParent)
+        : [item.tabId];
+
+    final visibleBlock = [
+      for (final tabId in block)
+        if (!emitted.contains(tabId)) tabId,
+    ];
+    if (visibleBlock.isEmpty) {
+      continue;
+    }
+
+    displayBlocks.add(visibleBlock);
+    emitted.addAll(visibleBlock);
+  }
+
+  // Partition blocks (not raw ids) by their root group, preserving block
+  // atomicity. The first block in each group always contains the root, since
+  // visibleItems is rendered parent-before-children. Subsequent blocks are
+  // siblings/descendants in display order.
+  final blocksByRoot = <String, List<List<String>>>{};
+  final rootOrder = <String>[];
+  for (final block in displayBlocks) {
+    final rootId = _rootIdFor(block.first, parentById);
+    blocksByRoot
+        .putIfAbsent(rootId, () {
+          rootOrder.add(rootId);
+          return [];
+        })
+        .add(block);
+  }
+
+  // For newest-first display, the rendered child order within a group is the
+  // reverse of storage (orderKey-ascending) order. Convert back to storage
+  // order before picking anchors so genBetween receives prev.orderKey <
+  // next.orderKey. Block contents (e.g. the moving subtree from _subtreeIds)
+  // are already storage-ordered internally, so we reverse blocks as units.
+  if (tabListDirection == TabListDirection.newestFirst) {
+    for (final blocks in blocksByRoot.values) {
+      if (blocks.length > 1) {
+        final reversedTail = blocks.sublist(1).reversed.toList();
+        blocks
+          ..removeRange(1, blocks.length)
+          ..addAll(reversedTail);
+      }
+    }
+  }
+
+  final orderedRootIds = tabListDirection == TabListDirection.newestFirst
+      ? rootOrder.reversed
+      : rootOrder;
+
+  final orderedTabIds = [
+    for (final rootId in orderedRootIds)
+      for (final block in blocksByRoot[rootId]!) ...block,
+  ];
+
+  return _resultFromOrderedIds(
+    movingTabIds: moveBlock,
+    orderedTabIds: orderedTabIds,
+  );
+}
+
+TabViewReorderResult? _resultFromOrderedIds({
+  required List<String> movingTabIds,
+  required List<String> orderedTabIds,
+}) {
+  if (movingTabIds.isEmpty) {
+    return null;
+  }
+
+  final movingSet = movingTabIds.toSet();
+  final firstIndex = orderedTabIds.indexWhere(movingSet.contains);
+  if (firstIndex < 0) {
+    return null;
+  }
+
+  var lastIndex = firstIndex;
+  while (lastIndex + 1 < orderedTabIds.length &&
+      movingSet.contains(orderedTabIds[lastIndex + 1])) {
+    lastIndex++;
+  }
+
+  return TabViewReorderResult(
+    movingTabIds: movingTabIds,
+    previousTabId: firstIndex > 0 ? orderedTabIds[firstIndex - 1] : null,
+    nextTabId: lastIndex + 1 < orderedTabIds.length
+        ? orderedTabIds[lastIndex + 1]
+        : null,
+  );
+}
+
+String? _parentScope(TabViewItem item) => item.childItem?.parentId;
+
+int? _resolveInsertIndexInParentScope(
+  List<TabViewItem> items,
+  int requestedInsertIndex,
+  String? parentScope,
+  Map<String, String?> parentById,
+) {
+  final target = requestedInsertIndex < items.length
+      ? items[requestedInsertIndex]
+      : null;
+
+  if (target != null && _isDirectScopeAnchor(target, parentScope, parentById)) {
+    return target.tabId == parentScope
+        ? requestedInsertIndex + 1
+        : requestedInsertIndex;
+  }
+
+  final previousAnchorIndex = _nearestPreviousScopeAnchorIndex(
+    items,
+    requestedInsertIndex - 1,
+    parentScope,
+    parentById,
+  );
+  if (previousAnchorIndex != null) {
+    return _indexAfterVisibleSubtree(items, previousAnchorIndex, parentById);
+  }
+
+  return _nearestNextScopeAnchorIndex(
+    items,
+    requestedInsertIndex,
+    parentScope,
+    parentById,
+  );
+}
+
+bool _isDirectScopeAnchor(
+  TabViewItem item,
+  String? parentScope,
+  Map<String, String?> parentById,
+) {
+  return item.tabId == parentScope || parentById[item.tabId] == parentScope;
+}
+
+int? _nearestPreviousScopeAnchorIndex(
+  List<TabViewItem> items,
+  int startIndex,
+  String? parentScope,
+  Map<String, String?> parentById,
+) {
+  for (var i = startIndex; i >= 0; i--) {
+    if (_isDirectScopeAnchor(items[i], parentScope, parentById)) {
+      return i;
+    }
+  }
+  return null;
+}
+
+int? _nearestNextScopeAnchorIndex(
+  List<TabViewItem> items,
+  int startIndex,
+  String? parentScope,
+  Map<String, String?> parentById,
+) {
+  for (var i = startIndex; i < items.length; i++) {
+    if (_isDirectScopeAnchor(items[i], parentScope, parentById)) {
+      return items[i].tabId == parentScope ? i + 1 : i;
+    }
+  }
+  return null;
+}
+
+int _indexAfterVisibleSubtree(
+  List<TabViewItem> items,
+  int anchorIndex,
+  Map<String, String?> parentById,
+) {
+  final anchorId = items[anchorIndex].tabId;
+  var index = anchorIndex + 1;
+  while (index < items.length &&
+      _isDescendantOf(items[index].tabId, anchorId, parentById)) {
+    index++;
+  }
+  return index;
+}
+
+bool _isDescendantOf(
+  String tabId,
+  String ancestorId,
+  Map<String, String?> parentById,
+) {
+  var parentId = parentById[tabId];
+  final seen = <String>{tabId};
+  while (parentId != null) {
+    if (parentId == ancestorId) {
+      return true;
+    }
+    if (!seen.add(parentId)) {
+      return false;
+    }
+    parentId = parentById[parentId];
+  }
+  return false;
+}
+
+Map<String, List<TabsWithRootAndDepthResult>> _buildChildrenByParent(
+  Map<String, TabsWithRootAndDepthResult> rowsById,
+  Map<String, String?> parentById,
+) {
+  final childrenByParent = <String, List<TabsWithRootAndDepthResult>>{};
+  for (final row in rowsById.values) {
+    final parentId = parentById[row.id];
+    if (parentId == null) continue;
+    childrenByParent.putIfAbsent(parentId, () => []).add(row);
+  }
+  for (final children in childrenByParent.values) {
+    children.sort((a, b) => a.orderKey.compareTo(b.orderKey));
+  }
+  return childrenByParent;
+}
+
+List<String> _subtreeIds(
+  String rootId,
+  Map<String, TabsWithRootAndDepthResult> rowsById,
+  Map<String, List<TabsWithRootAndDepthResult>> childrenByParent,
+) {
+  final root = rowsById[rootId];
+  if (root == null) {
+    return [rootId];
+  }
+
+  final result = <String>[];
+  final visited = <String>{};
+
+  void collect(String tabId) {
+    if (!visited.add(tabId)) return;
+
+    result.add(tabId);
+    for (final child
+        in childrenByParent[tabId] ?? const <TabsWithRootAndDepthResult>[]) {
+      collect(child.id);
+    }
+  }
+
+  collect(root.id);
+  return result;
+}
+
+String _rootIdFor(String tabId, Map<String, String?> parentById) {
+  var rootId = tabId;
+  var parentId = parentById[rootId];
+  final seen = <String>{rootId};
+
+  while (parentId != null && parentById.containsKey(parentId)) {
+    if (!seen.add(parentId)) {
+      break;
+    }
+    rootId = parentId;
+    parentId = parentById[rootId];
+  }
+
+  return rootId;
+}

apps/weblibre/lib/features/geckoview/features/browser/presentation/widgets/browser_menu_sheet.dart

@@ -347,6 +347,24 @@ class _NavigationRow extends HookConsumerWidget {
                 },
                 child: const Text('Close from Same Host'),
               ),
+            MenuItemButton(
+              leadingIcon: const Icon(Icons.account_tree),
+              onPressed: () async {
+                final descendants = await ref
+                    .read(tabDataRepositoryProvider.notifier)
+                    .getTabDescendants(selectedTabId);
+                if (!context.mounted) return;
+
+                final subtreeIds = descendants.keys.toList();
+                if (subtreeIds.isNotEmpty) {
+                  await closeTabsWithConfirmation(context, ref, subtreeIds);
+                }
+                if (context.mounted) {
+                  Navigator.pop(context);
+                }
+              },
+              child: const Text('Close Tab and Descendants'),
+            ),
           ],
           child: _buildNavIcon(
             icon: MdiIcons.tabMinus,

apps/weblibre/lib/features/geckoview/features/browser/presentation/widgets/tab_view/tab_grid_view.dart

@@ -36,29 +36,66 @@ import 'package:weblibre/features/geckoview/domain/providers/selected_tab.dart';
 import 'package:weblibre/features/geckoview/domain/providers/tab_state.dart';
 import 'package:weblibre/features/geckoview/features/browser/domain/providers.dart';
 import 'package:weblibre/features/geckoview/features/browser/presentation/controllers/tab_view_controllers.dart';
+import 'package:weblibre/features/geckoview/features/browser/presentation/utils/tab_view_reorder.dart';
 import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/draggable_scrollable_header.dart';
 import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/tab_view/tab_context_menu_draggable.dart';
 import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/tab_view/tab_drop_target.dart';
+import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/tab_view/tab_group_expand_toggle.dart';
 import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/tab_view/tab_preview.dart';
 import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/tab_view/tab_view_header.dart';
+import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/tab_view/tab_view_item.dart';
 import 'package:weblibre/features/geckoview/features/browser/utils/grid_calculations.dart';
+import 'package:weblibre/features/geckoview/features/tabs/data/database/definitions.drift.dart'
+    show TabsWithRootAndDepthResult;
 import 'package:weblibre/features/geckoview/features/tabs/data/entities/container_filter.dart';
 import 'package:weblibre/features/geckoview/features/tabs/data/entities/tab_entity.dart';
+import 'package:weblibre/features/geckoview/features/tabs/domain/providers.dart';
 import 'package:weblibre/features/geckoview/features/tabs/domain/providers/selected_container.dart';
 import 'package:weblibre/features/geckoview/features/tabs/domain/repositories/container.dart';
 import 'package:weblibre/features/geckoview/features/tabs/domain/repositories/tab.dart';
 import 'package:weblibre/features/geckoview/features/tabs/domain/repositories/tab_search.dart';
 import 'package:weblibre/features/user/domain/repositories/general_settings.dart';
 
+/// Top-left expand/collapse toggle for grid cells. Returns null for any
+/// row that is not a parent — leaf children rely on the bottom-left depth
+/// indicator instead.
+Widget? _gridGroupToggleFor(TabViewItem row) {
+  final parentGroup = row.parentGroup;
+  if (parentGroup != null) {
+    return TabGroupExpandToggle(
+      parentId: parentGroup.tabId,
+      childCount: parentGroup.childCount,
+      style: TabGroupToggleStyle.grid,
+    );
+  }
+  final child = row.childItem;
+  if (child != null && child.childCount > 0) {
+    return TabGroupExpandToggle(
+      parentId: child.tabId,
+      childCount: child.childCount,
+      style: TabGroupToggleStyle.grid,
+    );
+  }
+  return null;
+}
+
+int _gridDepthFor(TabViewItem row) => row.childItem?.depth ?? 0;
+
 class _TabDraggable extends HookConsumerWidget {
-  final TabEntity entity;
+  final String tabId;
+  final String? sourceSearchQuery;
   final String? suggestedContainerId;
   final VoidCallback onClose;
+  final Widget? groupToggle;
+  final int depth;
 
   const _TabDraggable({
-    required this.entity,
+    required this.tabId,
     required this.onClose,
+    this.sourceSearchQuery,
     this.suggestedContainerId,
+    this.groupToggle,
+    this.depth = 0,
   });
 
   @override
@@ -73,7 +110,7 @@ class _TabDraggable extends HookConsumerWidget {
           null => null,
         };
 
-        return (dragTabId == entity.tabId) ? value : null;
+        return (dragTabId == tabId) ? value : null;
       }),
     );
 
@@ -81,8 +118,8 @@ class _TabDraggable extends HookConsumerWidget {
     final tab = useMemoized(() {
       return (suggestedContainerId != null)
           ? SuggestedSingleGridTabPreview(
-              key: ValueKey(entity.tabId),
+              key: ValueKey(tabId),
-              tabId: entity.tabId,
+              tabId: tabId,
               activeTabId: activeTab,
               onTap: () async {
                 final containerData = await ref
@@ -92,24 +129,20 @@ class _TabDraggable extends HookConsumerWidget {
                 if (containerData != null) {
                   await ref
                       .read(tabDataRepositoryProvider.notifier)
-                      .assignContainer(entity.tabId, containerData);
+                      .assignContainer(tabId, containerData);
                 }
               },
             )
           : SingleGridTabPreview(
-              key: ValueKey(entity.tabId),
+              key: ValueKey(tabId),
-              tabId: entity.tabId,
+              tabId: tabId,
               activeTabId: activeTab,
               onClose: onClose,
-              sourceSearchQuery: switch (entity) {
+              sourceSearchQuery: sourceSearchQuery,
-                DefaultTabEntity _ => null,
+              groupToggle: groupToggle,
-                final SearchResultTabEntity entity => entity.searchQuery,
+              depth: depth,
-                TabTreeEntity _ => throw UnimplementedError(
-                  'TabTreeEntity not implemented in tab grid view',
-                ),
-              },
             );
-    }, [entity.tabId, activeTab, suggestedContainerId]);
+    }, [tabId, activeTab, suggestedContainerId, groupToggle, depth]);
 
     return switch (dragData) {
       ContainerDropData() => Opacity(
@@ -144,19 +177,71 @@ class _TabGridView extends HookConsumerWidget {
     final screenWidth = MediaQuery.of(context).size.width;
     final disableAnimations = MediaQuery.disableAnimationsOf(context);
     final canManualReorder = ref.watch(canManualTabReorderProvider);
-    final reorderEnabled = tabsReorderable && canManualReorder;
-
     final containerId = ref.watch(selectedContainerProvider);
-
+    final reorderEnabled = tabsReorderable && canManualReorder;
-    final filteredTabEntities = ref.watch(
+    final filterOptions = ref.watch(tabViewFilterControllerProvider);
-      seamlessFilteredTabEntitiesProvider(
+    final showHierarchicalTabs = filterOptions.showHierarchicalTabs;
-        searchPartition: TabSearchPartition.preview,
+    final tabListDirection = ref.watch(
-        // ignore: document_ignores using fast equatable
+      generalSettingsWithDefaultsProvider.select((s) => s.tabListDirection),
-        // ignore: provider_parameters
-        containerFilter: ContainerFilterById(containerId: containerId),
-        groupTrees: false,
-      ),
     );
+    final collapsedGroups = ref.watch(collapsedGroupsProvider);
+    final List<TabsWithRootAndDepthResult> treeRows = showHierarchicalTabs
+        ? ref.watch(
+            watchTabsWithRootAndDepthProvider(
+              containerId,
+            ).select((value) => value.value ?? const []),
+          )
+        : const <TabsWithRootAndDepthResult>[];
+
+    final hasActiveSearch = ref.watch(
+      tabSearchRepositoryProvider(
+        TabSearchPartition.preview,
+      ).select((value) => (value.value?.query ?? '').isNotEmpty),
+    );
+
+    final List<TabViewItem> primaryRows;
+    if (hasActiveSearch || !showHierarchicalTabs) {
+      final flat = ref.watch(
+        seamlessFilteredTabEntitiesProvider(
+          searchPartition: TabSearchPartition.preview,
+          // ignore: document_ignores using fast equatable
+          // ignore: provider_parameters
+          containerFilter: ContainerFilterById(containerId: containerId),
+          groupTrees: false,
+        ),
+      );
+      primaryRows = [
+        for (final entity in flat.value)
+          TabViewItem.search(
+            tabId: entity.tabId,
+            sourceSearchQuery: switch (entity) {
+              DefaultTabEntity _ => null,
+              final SearchResultTabEntity e => e.searchQuery,
+              TabTreeEntity _ => null,
+            },
+          ),
+      ];
+    } else {
+      final grouped = ref.watch(
+        groupedTabListItemsProvider(containerId: containerId),
+      );
+      primaryRows = [
+        for (final item in grouped.value)
+          switch (item) {
+            TabListStandaloneItem(:final tabId) => TabViewItem.standalone(
+              tabId: tabId,
+            ),
+            final TabListParentGroup g => TabViewItem.parent(
+              tabId: g.tabId,
+              parentGroup: g,
+            ),
+            final TabListChildItem c => TabViewItem.child(
+              tabId: c.tabId,
+              childItem: c,
+            ),
+          },
+      ];
+    }
 
     final tabSuggestionsEnabled = ref.watch(
       persistedBoolProvider(PersistedBoolKey.tabSuggestions),
@@ -167,12 +252,10 @@ class _TabGridView extends HookConsumerWidget {
         : EquatableValue(<TabEntity>[]);
 
     final itemCount =
-        filteredTabEntities.value.length +
+        primaryRows.length +
         //Limit to 3 sugegstions for now
         math.min<int>(suggestedTabEntities.value.length, 3);
-    final displayItemCount = reorderEnabled
+    final displayItemCount = reorderEnabled ? primaryRows.length : itemCount;
-        ? filteredTabEntities.value.length
-        : itemCount;
 
     final activeTab = ref.watch(selectedTabProvider);
 
@@ -205,9 +288,7 @@ class _TabGridView extends HookConsumerWidget {
 
       WidgetsBinding.instance.addPostFrameCallback((_) {
         if (scrollController.hasClients && activeTab != null) {
-          final index = filteredTabEntities.value.indexWhere(
+          final index = primaryRows.indexWhere((row) => row.tabId == activeTab);
-            (entity) => entity.tabId == activeTab,
-          );
 
           if (index > -1) {
             final row = index ~/ crossAxisCount;
@@ -273,7 +354,7 @@ class _TabGridView extends HookConsumerWidget {
                     return widget;
                   },
                   suggestedContainerId: containerId,
-                  filteredTabEntities: filteredTabEntities,
+                  primaryRows: primaryRows,
                   suggestedTabEntities: suggestedTabEntities,
                   onClose: onClose,
                 )
@@ -294,57 +375,30 @@ class _TabGridView extends HookConsumerWidget {
                     final oldIndex = positions.first.oldIndex;
                     final newIndex = positions.first.newIndex;
 
-                    final containerRepository = ref.read(
-                      containerRepositoryProvider.notifier,
-                    );
-
                     //Suggestions are at the end and not reorderable, so skip
-                    if (oldIndex >= filteredTabEntities.value.length) {
+                    if (oldIndex >= primaryRows.length) {
                       return;
                     }
 
-                    final tabId = filteredTabEntities.value[oldIndex].tabId;
+                    final result = buildTabViewReorderResult(
-                    final containerId = await ref
+                      visibleItems: primaryRows,
-                        .read(tabDataRepositoryProvider.notifier)
+                      treeRows: treeRows,
-                        .getTabContainerId(tabId);
+                      collapsedGroups: collapsedGroups,
-
+                      oldIndex: oldIndex,
-                    var targetIndex = newIndex;
+                      newIndex: newIndex,
-                    if (targetIndex > oldIndex) {
+                      tabListDirection: tabListDirection,
-                      targetIndex -= 1;
+                      hierarchical: showHierarchicalTabs && !hasActiveSearch,
-                    }
-
-                    targetIndex = targetIndex.clamp(
-                      0,
-                      filteredTabEntities.value.length - 1,
                     );
 
-                    final String key;
+                    if (result == null) return;
-                    if (targetIndex <= 0) {
-                      key = await containerRepository.getLeadingOrderKey(
-                        containerId,
-                      );
-                    } else if (targetIndex >=
-                        filteredTabEntities.value.length - 1) {
-                      key = await containerRepository.getTrailingOrderKey(
-                        containerId,
-                      );
-                    } else {
-                      if (targetIndex < oldIndex) {
-                        key = (await containerRepository.getOrderKeyAfterTab(
-                          filteredTabEntities.value[targetIndex - 1].tabId,
-                          containerId,
-                        ))!;
-                      } else {
-                        key = await containerRepository.getOrderKeyBeforeTab(
-                          filteredTabEntities.value[targetIndex + 1].tabId,
-                          containerId,
-                        );
-                      }
-                    }
 
                     await ref
                         .read(tabDataRepositoryProvider.notifier)
-                        .assignOrderKey(tabId, key);
+                        .reorderTabs(
+                          movingTabIds: result.movingTabIds,
+                          previousTabId: result.previousTabId,
+                          nextTabId: result.nextTabId,
+                        );
                   },
                   childBuilder: (reorderableItemBuilder) {
                     return _TabGrid(
@@ -371,7 +425,7 @@ class _TabGridView extends HookConsumerWidget {
                         return reorderableItemBuilder(wrapped, index);
                       },
                       suggestedContainerId: containerId,
-                      filteredTabEntities: filteredTabEntities,
+                      primaryRows: primaryRows,
                       suggestedTabEntities: suggestedTabEntities,
                       onClose: onClose,
                     );
@@ -391,7 +445,7 @@ class _TabGrid extends StatelessWidget {
     required this.itemCount,
     required this.itemBuilder,
     required this.suggestedContainerId,
-    required this.filteredTabEntities,
+    required this.primaryRows,
     required this.suggestedTabEntities,
     required this.onClose,
   });
@@ -400,7 +454,7 @@ class _TabGrid extends StatelessWidget {
   final int itemCount;
   final ScrollController? scrollController;
   final String? suggestedContainerId;
-  final EquatableValue<List<TabEntity>> filteredTabEntities;
+  final List<TabViewItem> primaryRows;
   final EquatableValue<List<TabEntity>> suggestedTabEntities;
   final Widget Function(Widget, int)? itemBuilder;
   final VoidCallback onClose;
@@ -419,35 +473,38 @@ class _TabGrid extends StatelessWidget {
       ),
       itemCount: itemCount,
       itemBuilder: (context, index) {
-        final TabEntity entity;
+        if (index < primaryRows.length) {
-        final String? suggestedId;
+          final row = primaryRows[index];
+          final tab = CustomDraggable(
+            key: Key(row.tabId),
+            data: TabDragData(row.tabId),
+            child: _TabDraggable(
+              tabId: row.tabId,
+              sourceSearchQuery: row.sourceSearchQuery,
+              onClose: onClose,
+              groupToggle: _gridGroupToggleFor(row),
+              depth: _gridDepthFor(row),
+            ),
+          );
 
-        if (index < filteredTabEntities.value.length) {
+          if (itemBuilder == null) {
-          entity = filteredTabEntities.value[index];
+            return TabDropTarget(targetTabId: row.tabId, child: tab);
-          suggestedId = null;
+          }
-        } else {
+          return itemBuilder!(tab, index);
-          final suggestedIndex = index - filteredTabEntities.value.length;
-          entity = suggestedTabEntities.value[suggestedIndex];
-          suggestedId = suggestedContainerId;
         }
 
+        final suggestedIndex = index - primaryRows.length;
+        final entity = suggestedTabEntities.value[suggestedIndex];
+
         final tab = CustomDraggable(
-          key: Key(
+          key: Key('suggested_${entity.tabId}'),
-            suggestedId != null ? 'suggested_${entity.tabId}' : entity.tabId,
-          ),
-          data: suggestedId != null ? null : TabDragData(entity.tabId),
           child: _TabDraggable(
-            entity: entity,
+            tabId: entity.tabId,
             onClose: onClose,
-            suggestedContainerId: suggestedId,
+            suggestedContainerId: suggestedContainerId,
           ),
         );
 
-        // Only add DragTarget for non-suggested tabs in non-reorder mode
-        if (suggestedId == null && itemBuilder == null) {
-          return TabDropTarget(targetTabId: entity.tabId, child: tab);
-        }
-
         return (itemBuilder != null) ? itemBuilder!(tab, index) : tab;
       },
     );

apps/weblibre/lib/features/geckoview/features/browser/presentation/widgets/tab_view/tab_group_expand_toggle.dart

@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2024-2026 Fabian Freund.
+ *
+ * This file is part of WebLibre
+ * (see https://weblibre.eu).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+import 'package:flutter/material.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:weblibre/features/geckoview/features/browser/presentation/controllers/tab_view_controllers.dart';
+
+enum TabGroupToggleStyle {
+  /// Standard `IconButton`, sits inside a list-tile trailing row alongside
+  /// the close button.
+  list,
+
+  /// 28x28 square button that mirrors the grid cell close button — same
+  /// surface tint, alpha, radius, and icon size.
+  grid,
+}
+
+class TabGroupExpandToggle extends ConsumerWidget {
+  final String parentId;
+  final int childCount;
+  final TabGroupToggleStyle style;
+
+  const TabGroupExpandToggle({
+    required this.parentId,
+    required this.childCount,
+    this.style = TabGroupToggleStyle.list,
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final isCollapsed = ref.watch(
+      collapsedGroupsProvider.select((set) => set.contains(parentId)),
+    );
+
+    final theme = Theme.of(context);
+    final scheme = theme.colorScheme;
+
+    final chevron = isCollapsed
+        ? Icons.keyboard_arrow_down_rounded
+        : Icons.keyboard_arrow_up_rounded;
+    final tooltip = isCollapsed ? 'Expand group' : 'Collapse group';
+
+    void onTap() {
+      ref.read(collapsedGroupsProvider.notifier).toggle(parentId);
+    }
+
+    return switch (style) {
+      // Unified pill: count + chevron live inside one Material/InkWell so
+      // the whole badge is the toggle target.
+      TabGroupToggleStyle.list => Tooltip(
+        message: tooltip,
+        child: Material(
+          color: scheme.secondaryContainer.withAlpha(204),
+          borderRadius: BorderRadius.circular(20),
+          clipBehavior: Clip.antiAlias,
+          child: InkWell(
+            onTap: onTap,
+            child: Padding(
+              padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
+              child: Row(
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  Text(
+                    '$childCount',
+                    style: theme.textTheme.labelMedium?.copyWith(
+                      fontWeight: FontWeight.w700,
+                      color: scheme.onSecondaryContainer,
+                      height: 1.0,
+                    ),
+                  ),
+                  const SizedBox(width: 4),
+                  Icon(chevron, size: 18, color: scheme.onSecondaryContainer),
+                ],
+              ),
+            ),
+          ),
+        ),
+      ),
+      // Grid: unified pill with count + chevron — height matches the 28px
+      // close button at top-right; tint, alpha, and radius mirror it so
+      // the two corners stay balanced.
+      TabGroupToggleStyle.grid => Tooltip(
+        message: tooltip,
+        child: SizedBox(
+          height: 28,
+          child: Material(
+            color: scheme.surfaceContainerHighest.withAlpha(200),
+            borderRadius: const BorderRadius.all(Radius.circular(8.0)),
+            clipBehavior: Clip.antiAlias,
+            child: InkWell(
+              onTap: onTap,
+              child: Padding(
+                padding: const EdgeInsets.symmetric(horizontal: 6),
+                child: Row(
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    Text(
+                      '$childCount',
+                      style: theme.textTheme.labelSmall?.copyWith(
+                        color: scheme.onSurfaceVariant,
+                        fontWeight: FontWeight.w700,
+                        height: 1.0,
+                      ),
+                    ),
+                    const SizedBox(width: 2),
+                    Icon(chevron, size: 16, color: scheme.onSurfaceVariant),
+                  ],
+                ),
+              ),
+            ),
+          ),
+        ),
+      ),
+    };
+  }
+}

apps/weblibre/lib/features/geckoview/features/browser/presentation/widgets/tab_view/tab_list_view.dart

@@ -35,13 +35,19 @@ import 'package:weblibre/features/geckoview/domain/providers/selected_tab.dart';
 import 'package:weblibre/features/geckoview/domain/providers/tab_state.dart';
 import 'package:weblibre/features/geckoview/features/browser/domain/providers.dart';
 import 'package:weblibre/features/geckoview/features/browser/presentation/controllers/tab_view_controllers.dart';
+import 'package:weblibre/features/geckoview/features/browser/presentation/utils/tab_view_reorder.dart';
 import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/draggable_scrollable_header.dart';
 import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/tab_view/tab_context_menu_draggable.dart';
 import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/tab_view/tab_drop_target.dart';
+import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/tab_view/tab_group_expand_toggle.dart';
 import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/tab_view/tab_preview.dart';
 import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/tab_view/tab_view_header.dart';
+import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/tab_view/tab_view_item.dart';
+import 'package:weblibre/features/geckoview/features/tabs/data/database/definitions.drift.dart'
+    show TabsWithRootAndDepthResult;
 import 'package:weblibre/features/geckoview/features/tabs/data/entities/container_filter.dart';
 import 'package:weblibre/features/geckoview/features/tabs/data/entities/tab_entity.dart';
+import 'package:weblibre/features/geckoview/features/tabs/domain/providers.dart';
 import 'package:weblibre/features/geckoview/features/tabs/domain/providers/selected_container.dart';
 import 'package:weblibre/features/geckoview/features/tabs/domain/repositories/container.dart';
 import 'package:weblibre/features/geckoview/features/tabs/domain/repositories/tab.dart';
@@ -49,17 +55,47 @@ import 'package:weblibre/features/geckoview/features/tabs/domain/repositories/ta
 import 'package:weblibre/features/sync/domain/repositories/sync.dart';
 import 'package:weblibre/features/user/domain/repositories/general_settings.dart';
 
+/// Build the hierarchy toggle injected into [ListTabPreview.groupToggle].
+///
+/// Returns a [TabGroupExpandToggle] for any node with descendants
+/// (root parents AND intermediate children), and null otherwise.
+Widget? _listGroupToggleFor(TabViewItem row) {
+  final parentGroup = row.parentGroup;
+  if (parentGroup != null) {
+    return TabGroupExpandToggle(
+      parentId: parentGroup.tabId,
+      childCount: parentGroup.childCount,
+    );
+  }
+  final child = row.childItem;
+  if (child != null && child.childCount > 0) {
+    return TabGroupExpandToggle(
+      parentId: child.tabId,
+      childCount: child.childCount,
+    );
+  }
+  return null;
+}
+
+int _depthFor(TabViewItem row) => row.childItem?.depth ?? 0;
+
 class _TabDraggable extends HookConsumerWidget {
-  final TabEntity entity;
+  final String tabId;
+  final String? sourceSearchQuery;
   final String? suggestedContainerId;
   final VoidCallback onClose;
   final double height;
+  final Widget? groupToggle;
+  final int depth;
 
   const _TabDraggable({
-    required this.entity,
+    required this.tabId,
     required this.onClose,
     required this.height,
+    this.sourceSearchQuery,
     this.suggestedContainerId,
+    this.groupToggle,
+    this.depth = 0,
   });
 
   @override
@@ -75,7 +111,7 @@ class _TabDraggable extends HookConsumerWidget {
           null => null,
         };
 
-        return (dragTabId == entity.tabId) ? value : null;
+        return (dragTabId == tabId) ? value : null;
       }),
     );
 
@@ -83,8 +119,8 @@ class _TabDraggable extends HookConsumerWidget {
     final tab = useMemoized(() {
       return (suggestedContainerId != null)
           ? SuggestedSingleListTabPreview(
-              key: ValueKey(entity.tabId),
+              key: ValueKey(tabId),
-              tabId: entity.tabId,
+              tabId: tabId,
               activeTabId: activeTab,
               onTap: () async {
                 final containerData = await ref
@@ -94,24 +130,20 @@ class _TabDraggable extends HookConsumerWidget {
                 if (containerData != null) {
                   await ref
                       .read(tabDataRepositoryProvider.notifier)
-                      .assignContainer(entity.tabId, containerData);
+                      .assignContainer(tabId, containerData);
                 }
               },
             )
           : SingleListTabPreview(
-              key: ValueKey(entity.tabId),
+              key: ValueKey(tabId),
-              tabId: entity.tabId,
+              tabId: tabId,
               activeTabId: activeTab,
               onClose: onClose,
-              sourceSearchQuery: switch (entity) {
+              sourceSearchQuery: sourceSearchQuery,
-                DefaultTabEntity _ => null,
+              groupToggle: groupToggle,
-                final SearchResultTabEntity entity => entity.searchQuery,
+              depth: depth,
-                TabTreeEntity _ => throw UnimplementedError(
-                  'TabTreeEntity not implemented in tab list view',
-                ),
-              },
             );
-    }, [entity.tabId, activeTab, suggestedContainerId]);
+    }, [tabId, activeTab, suggestedContainerId, groupToggle, depth]);
 
     return switch (dragData) {
       ContainerDropData() => Opacity(
@@ -208,16 +240,69 @@ class _TabListView extends HookConsumerWidget {
     final containerId = ref.watch(selectedContainerProvider);
     final canManualReorder = ref.watch(canManualTabReorderProvider);
     final reorderEnabled = tabsReorderable && canManualReorder;
-
+    final filterOptions = ref.watch(tabViewFilterControllerProvider);
-    final filteredTabEntities = ref.watch(
+    final showHierarchicalTabs = filterOptions.showHierarchicalTabs;
-      seamlessFilteredTabEntitiesProvider(
+    final tabListDirection = ref.watch(
-        searchPartition: TabSearchPartition.preview,
+      generalSettingsWithDefaultsProvider.select((s) => s.tabListDirection),
-        // ignore: document_ignores using fast equatable
-        // ignore: provider_parameters
-        containerFilter: ContainerFilterById(containerId: containerId),
-        groupTrees: false,
-      ),
     );
+    final collapsedGroups = ref.watch(collapsedGroupsProvider);
+    final List<TabsWithRootAndDepthResult> treeRows = showHierarchicalTabs
+        ? ref.watch(
+            watchTabsWithRootAndDepthProvider(
+              containerId,
+            ).select((value) => value.value ?? const []),
+          )
+        : const <TabsWithRootAndDepthResult>[];
+
+    final hasActiveSearch = ref.watch(
+      tabSearchRepositoryProvider(
+        TabSearchPartition.preview,
+      ).select((value) => (value.value?.query ?? '').isNotEmpty),
+    );
+
+    final List<TabViewItem> primaryRows;
+    if (hasActiveSearch || !showHierarchicalTabs) {
+      final flat = ref.watch(
+        seamlessFilteredTabEntitiesProvider(
+          searchPartition: TabSearchPartition.preview,
+          // ignore: document_ignores using fast equatable
+          // ignore: provider_parameters
+          containerFilter: ContainerFilterById(containerId: containerId),
+          groupTrees: false,
+        ),
+      );
+      primaryRows = [
+        for (final entity in flat.value)
+          TabViewItem.search(
+            tabId: entity.tabId,
+            sourceSearchQuery: switch (entity) {
+              DefaultTabEntity _ => null,
+              final SearchResultTabEntity e => e.searchQuery,
+              TabTreeEntity _ => null,
+            },
+          ),
+      ];
+    } else {
+      final grouped = ref.watch(
+        groupedTabListItemsProvider(containerId: containerId),
+      );
+      primaryRows = [
+        for (final item in grouped.value)
+          switch (item) {
+            TabListStandaloneItem(:final tabId) => TabViewItem.standalone(
+              tabId: tabId,
+            ),
+            final TabListParentGroup g => TabViewItem.parent(
+              tabId: g.tabId,
+              parentGroup: g,
+            ),
+            final TabListChildItem c => TabViewItem.child(
+              tabId: c.tabId,
+              childItem: c,
+            ),
+          },
+      ];
+    }
 
     final tabSuggestionsEnabled = ref.watch(
       persistedBoolProvider(PersistedBoolKey.tabSuggestions),
@@ -228,12 +313,10 @@ class _TabListView extends HookConsumerWidget {
         : EquatableValue(<TabEntity>[]);
 
     final itemCount =
-        filteredTabEntities.value.length +
+        primaryRows.length +
         //Limit to 3 sugegstions for now
         math.min<int>(suggestedTabEntities.value.length, 3);
-    final displayItemCount = reorderEnabled
+    final displayItemCount = reorderEnabled ? primaryRows.length : itemCount;
-        ? filteredTabEntities.value.length
-        : itemCount;
 
     final activeTab = ref.watch(selectedTabProvider);
 
@@ -244,9 +327,7 @@ class _TabListView extends HookConsumerWidget {
 
       WidgetsBinding.instance.addPostFrameCallback((_) {
         if (scrollController.hasClients && activeTab != null) {
-          final index = filteredTabEntities.value.indexWhere(
+          final index = primaryRows.indexWhere((row) => row.tabId == activeTab);
-            (entity) => entity.tabId == activeTab,
-          );
 
           if (index > -1) {
             final viewportStart = scrollController.offset;
@@ -302,50 +383,50 @@ class _TabListView extends HookConsumerWidget {
                   itemCount: displayItemCount,
                   itemExtent: _itemHeight,
                   itemBuilder: (context, index) {
-                    final TabEntity entity;
+                    if (index < primaryRows.length) {
-                    final String? suggestedId;
+                      final row = primaryRows[index];
+                      final tab = CustomDraggable(
+                        key: Key(row.tabId),
+                        data: TabDragData(row.tabId),
+                        child: _TabDraggable(
+                          tabId: row.tabId,
+                          onClose: onClose,
+                          sourceSearchQuery: row.sourceSearchQuery,
+                          height: _itemHeight,
+                          groupToggle: _listGroupToggleFor(row),
+                          depth: _depthFor(row),
+                        ),
+                      );
 
-                    if (index < filteredTabEntities.value.length) {
+                      return TabDropTarget(
-                      entity = filteredTabEntities.value[index];
+                        targetTabId: row.tabId,
-                      suggestedId = null;
+                        child: TabContextMenuDraggable(
-                    } else {
+                          tabId: row.tabId,
-                      final suggestedIndex =
+                          data: tab.data! as TabDragData,
-                          index - filteredTabEntities.value.length;
+                          feedbackSize: Size(
-                      entity = suggestedTabEntities.value[suggestedIndex];
+                            MediaQuery.of(context).size.width,
-                      suggestedId = containerId;
+                            _itemHeight,
+                          ),
+                          child: tab.child,
+                        ),
+                      );
                     }
 
+                    final suggestedIndex = index - primaryRows.length;
+                    final entity = suggestedTabEntities.value[suggestedIndex];
                     final tab = CustomDraggable(
-                      key: Key(
+                      key: Key('suggested_${entity.tabId}'),
-                        suggestedId != null
-                            ? 'suggested_${entity.tabId}'
-                            : entity.tabId,
-                      ),
-                      data: suggestedId != null
-                          ? null
-                          : TabDragData(entity.tabId),
                       child: _TabDraggable(
-                        entity: entity,
+                        tabId: entity.tabId,
                         onClose: onClose,
-                        suggestedContainerId: suggestedId,
+                        suggestedContainerId: containerId,
                         height: _itemHeight,
                       ),
                     );
-
                     return TabDropTarget(
                       targetTabId: entity.tabId,
-                      enabled: suggestedId == null,
+                      enabled: false,
-                      child: tab.data is TabDragData
+                      child: tab.child,
-                          ? TabContextMenuDraggable(
-                              tabId: (tab.data! as TabDragData).tabId,
-                              data: tab.data! as TabDragData,
-                              feedbackSize: Size(
-                                MediaQuery.of(context).size.width,
-                                _itemHeight,
-                              ),
-                              child: tab.child,
-                            )
-                          : tab.child,
                     );
                   },
                 )
@@ -357,84 +438,59 @@ class _TabListView extends HookConsumerWidget {
                     ref.read(willAcceptDropProvider.notifier).clear();
                   },
                   onReorder: (oldIndex, newIndex) async {
-                    final containerRepository = ref.read(
-                      containerRepositoryProvider.notifier,
-                    );
-
                     //Suggestions are at the end and not reorderable, so skip
-                    if (oldIndex >= filteredTabEntities.value.length) {
+                    if (oldIndex >= primaryRows.length) {
                       return;
                     }
 
-                    final tabId = filteredTabEntities.value[oldIndex].tabId;
+                    final result = buildTabViewReorderResult(
-                    final containerId = await ref
+                      visibleItems: primaryRows,
-                        .read(tabDataRepositoryProvider.notifier)
+                      treeRows: treeRows,
-                        .getTabContainerId(tabId);
+                      collapsedGroups: collapsedGroups,
-
+                      oldIndex: oldIndex,
-                    var targetIndex = newIndex;
+                      newIndex: newIndex,
-                    if (targetIndex > oldIndex) {
+                      tabListDirection: tabListDirection,
-                      targetIndex -= 1;
+                      hierarchical: showHierarchicalTabs && !hasActiveSearch,
-                    }
-
-                    targetIndex = targetIndex.clamp(
-                      0,
-                      filteredTabEntities.value.length - 1,
                     );
 
-                    final String key;
+                    if (result == null) return;
-                    if (targetIndex <= 0) {
-                      key = await containerRepository.getLeadingOrderKey(
-                        containerId,
-                      );
-                    } else if (targetIndex >=
-                        filteredTabEntities.value.length - 1) {
-                      key = await containerRepository.getTrailingOrderKey(
-                        containerId,
-                      );
-                    } else {
-                      if (targetIndex < oldIndex) {
-                        key = (await containerRepository.getOrderKeyAfterTab(
-                          filteredTabEntities.value[targetIndex - 1].tabId,
-                          containerId,
-                        ))!;
-                      } else {
-                        key = await containerRepository.getOrderKeyBeforeTab(
-                          filteredTabEntities.value[targetIndex + 1].tabId,
-                          containerId,
-                        );
-                      }
-                    }
 
                     await ref
                         .read(tabDataRepositoryProvider.notifier)
-                        .assignOrderKey(tabId, key);
+                        .reorderTabs(
+                          movingTabIds: result.movingTabIds,
+                          previousTabId: result.previousTabId,
+                          nextTabId: result.nextTabId,
+                        );
                   },
                   itemBuilder: (context, index) {
-                    if (index < filteredTabEntities.value.length) {
+                    if (index < primaryRows.length) {
-                      final entity = filteredTabEntities.value[index];
+                      final row = primaryRows[index];
                       return CustomDraggable(
-                        key: Key(entity.tabId),
+                        key: Key(row.tabId),
-                        data: TabDragData(entity.tabId),
+                        data: TabDragData(row.tabId),
                         child: TabContextMenuDraggable(
-                          tabId: entity.tabId,
+                          tabId: row.tabId,
                           feedbackSize: Size.zero,
                           externalDrag: true,
                           child: _TabDraggable(
-                            entity: entity,
+                            tabId: row.tabId,
                             onClose: onClose,
+                            sourceSearchQuery: row.sourceSearchQuery,
                             height: _itemHeight,
+                            groupToggle: _listGroupToggleFor(row),
+                            depth: _depthFor(row),
                           ),
                         ),
                       );
                     } else {
-                      final suggestedIndex =
+                      final suggestedIndex = index - primaryRows.length;
-                          index - filteredTabEntities.value.length;
                       final entity = suggestedTabEntities.value[suggestedIndex];
 
                       return CustomDraggable(
                         key: Key('suggested_${entity.tabId}'),
                         child: _TabDraggable(
-                          entity: entity,
+                          tabId: entity.tabId,
                           onClose: onClose,
                           suggestedContainerId: containerId,
                           height: _itemHeight,

apps/weblibre/lib/features/geckoview/features/browser/presentation/widgets/tab_view/tab_preview.dart

@@ -28,6 +28,7 @@ import 'package:weblibre/core/design/app_colors.dart';
 import 'package:weblibre/features/geckoview/domain/entities/states/tab.dart';
 import 'package:weblibre/features/geckoview/domain/providers/tab_state.dart';
 import 'package:weblibre/features/geckoview/domain/repositories/tab.dart';
+import 'package:weblibre/features/geckoview/features/browser/presentation/utils/tab_close_confirmation.dart';
 import 'package:weblibre/features/geckoview/features/browser/presentation/widgets/tab_icon.dart';
 import 'package:weblibre/features/geckoview/features/find_in_page/domain/entities/find_in_page_state.dart';
 import 'package:weblibre/features/geckoview/features/find_in_page/presentation/controllers/find_in_page.dart';
@@ -127,11 +128,22 @@ class GridTabPreview extends HookConsumerWidget {
   final VoidCallback? onDoubleTap;
   final VoidCallback? onDelete;
   final void Function(String host)? onDeleteAll;
+  final VoidCallback? onCloseSubtree;
 
   final bool showPinBadge;
 
   final Widget? trailingChild;
 
+  /// Hierarchy widget rendered in the top-left corner alongside any
+  /// pin badge / [trailingChild]. Used by the tabs grid to inline the
+  /// expand/collapse toggle without overlay layers.
+  final Widget? groupToggle;
+
+  /// Tree depth (>= 1 for any child). Renders a stack of overlapping
+  /// subdirectory glyphs in the bottom-left of the thumbnail to signal
+  /// nesting level at a glance.
+  final int depth;
+
   const GridTabPreview({
     required this.tabId,
     required this.isActive,
@@ -139,8 +151,11 @@ class GridTabPreview extends HookConsumerWidget {
     this.onDoubleTap,
     this.onDelete,
     this.onDeleteAll,
+    this.onCloseSubtree,
     this.showPinBadge = false,
     this.trailingChild,
+    this.groupToggle,
+    this.depth = 0,
     super.key,
   });
 
@@ -220,7 +235,9 @@ class GridTabPreview extends HookConsumerWidget {
                   else
                     Center(child: TabIcon(tabState: tabState, iconSize: 48)),
                   // Close button overlay
-                  if (onDelete != null || onDeleteAll != null)
+                  if (onDelete != null ||
+                      onDeleteAll != null ||
+                      onCloseSubtree != null)
                     Positioned(
                       top: 6.0,
                       right: 6.0,
@@ -237,6 +254,12 @@ class GridTabPreview extends HookConsumerWidget {
                             leadingIcon: const Icon(Icons.language),
                             child: const Text('Close from Same Host'),
                           ),
+                          if (onCloseSubtree != null)
+                            MenuItemButton(
+                              onPressed: onCloseSubtree,
+                              leadingIcon: const Icon(Icons.account_tree),
+                              child: const Text('Close Tab and Descendants'),
+                            ),
                         ],
                         child: SizedBox(
                           width: 28,
@@ -252,7 +275,8 @@ class GridTabPreview extends HookConsumerWidget {
                                 Radius.circular(8.0),
                               ),
                               onTap: onDelete,
-                              onLongPress: onDeleteAll != null
+                              onLongPress:
+                                  onDeleteAll != null || onCloseSubtree != null
                                   ? () {
                                       if (extendedDeleteMenuController.isOpen) {
                                         extendedDeleteMenuController.close();
@@ -271,13 +295,24 @@ class GridTabPreview extends HookConsumerWidget {
                         ),
                       ),
                     ),
-                  if (trailingChild != null || isPinned)
+                  if (depth > 0)
+                    Positioned(
+                      bottom: 6.0,
+                      left: 6.0,
+                      child: _GridDepthIndicator(depth: depth),
+                    ),
+                  if (trailingChild != null || isPinned || groupToggle != null)
                     Positioned(
                       top: 6.0,
                       left: 6.0,
                       child: Row(
                         mainAxisSize: MainAxisSize.min,
                         children: [
+                          if (groupToggle != null) ...[
+                            groupToggle!,
+                            if (trailingChild != null || isPinned)
+                              const SizedBox(width: 4),
+                          ],
                           if (trailingChild != null) trailingChild!,
                           if (isPinned)
                             Padding(
@@ -400,19 +435,31 @@ class ListTabPreview extends HookConsumerWidget {
   final VoidCallback? onTap;
   final VoidCallback? onDelete;
   final void Function(String host)? onDeleteAll;
+  final VoidCallback? onCloseSubtree;
 
   final bool showPinBadge;
 
   final Widget? trailingChild;
 
+  /// Hierarchy widget rendered inside the trailing row, just before the
+  /// close button. Used to inline the group expand/collapse toggle.
+  final Widget? groupToggle;
+
+  /// Tree depth of this row. Used to render an integrated indent guide
+  /// (vertical bar + L-stub) on the leading edge of the tile.
+  final int depth;
+
   const ListTabPreview({
     required this.tabId,
     required this.isActive,
     this.onTap,
     this.onDelete,
     this.onDeleteAll,
+    this.onCloseSubtree,
     this.showPinBadge = false,
     this.trailingChild,
+    this.groupToggle,
+    this.depth = 0,
     super.key,
   });
 
@@ -488,7 +535,7 @@ class ListTabPreview extends HookConsumerWidget {
 
     const borderRadius = BorderRadius.all(Radius.circular(12.0));
 
-    return Container(
+    final card = Container(
       margin: const EdgeInsets.symmetric(vertical: 3.0, horizontal: 4.0),
       decoration: BoxDecoration(
         color: listBgColor,
@@ -557,7 +604,10 @@ class ListTabPreview extends HookConsumerWidget {
                     ],
                   ),
                 ),
-                if (onDelete != null || onDeleteAll != null)
+                if (groupToggle != null) groupToggle!,
+                if (onDelete != null ||
+                    onDeleteAll != null ||
+                    onCloseSubtree != null)
                   MenuAnchor(
                     controller: extendedDeleteMenuController,
                     builder: (context, controller, child) {
@@ -571,10 +621,16 @@ class ListTabPreview extends HookConsumerWidget {
                         leadingIcon: const Icon(Icons.language),
                         child: const Text('Close from Same Host'),
                       ),
+                      if (onCloseSubtree != null)
+                        MenuItemButton(
+                          onPressed: onCloseSubtree,
+                          leadingIcon: const Icon(Icons.account_tree),
+                          child: const Text('Close Tab and Descendants'),
+                        ),
                     ],
                     child: IconButton(
                       onPressed: onDelete,
-                      onLongPress: onDeleteAll != null
+                      onLongPress: onDeleteAll != null || onCloseSubtree != null
                           ? () {
                               if (extendedDeleteMenuController.isOpen) {
                                 extendedDeleteMenuController.close();
@@ -597,9 +653,102 @@ class ListTabPreview extends HookConsumerWidget {
         ),
       ),
     );
+
+    if (depth <= 0) {
+      return card;
+    }
+
+    final levels = math.min(depth, _listMaxIndentLevels);
+    final indentWidth = levels * _listIndentStep;
+    final guideColor = colorScheme.outlineVariant.withAlpha(150);
+
+    return Row(
+      crossAxisAlignment: CrossAxisAlignment.stretch,
+      children: [
+        SizedBox(
+          width: indentWidth,
+          child: CustomPaint(
+            painter: _IndentGuidePainter(
+              color: guideColor,
+              stubInsetFromRight: 8.0,
+            ),
+          ),
+        ),
+        Expanded(child: card),
+      ],
+    );
   }
 }
 
+const double _listIndentStep = 16.0;
+const int _listMaxIndentLevels = 3;
+
+// Cap glyph count so the badge stays readable on deep trees.
+const int _gridMaxDepthGlyphs = 4;
+
+class _GridDepthIndicator extends StatelessWidget {
+  final int depth;
+  const _GridDepthIndicator({required this.depth});
+
+  @override
+  Widget build(BuildContext context) {
+    final scheme = Theme.of(context).colorScheme;
+    final glyphCount = math.min(depth, _gridMaxDepthGlyphs);
+
+    // Same shell as the top-left toggle / top-right close button:
+    // 28px tall, surfaceContainerHighest with 200 alpha, 8px radius,
+    // onSurfaceVariant icons at 16px.
+    return SizedBox(
+      height: 28,
+      child: Material(
+        color: scheme.surfaceContainerHighest.withAlpha(200),
+        borderRadius: const BorderRadius.all(Radius.circular(8.0)),
+        child: Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 6),
+          child: Row(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              for (var i = 0; i < glyphCount; i++)
+                Icon(
+                  MdiIcons.subdirectoryArrowRight,
+                  size: 16,
+                  color: scheme.onSurfaceVariant,
+                ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class _IndentGuidePainter extends CustomPainter {
+  final Color color;
+  final double stubInsetFromRight;
+
+  _IndentGuidePainter({required this.color, required this.stubInsetFromRight});
+
+  @override
+  void paint(Canvas canvas, Size size) {
+    final paint = Paint()
+      ..color = color
+      ..strokeWidth = 2.0
+      ..strokeCap = StrokeCap.round;
+
+    final guideX = size.width - stubInsetFromRight;
+    // L-stub is centred vertically in the row so it tracks the tile's
+    // mid-line regardless of itemExtent changes.
+    final stubY = size.height / 2;
+
+    canvas.drawLine(Offset(guideX, 0), Offset(guideX, size.height), paint);
+    canvas.drawLine(Offset(guideX, stubY), Offset(size.width, stubY), paint);
+  }
+
+  @override
+  bool shouldRepaint(covariant _IndentGuidePainter old) =>
+      old.color != color || old.stubInsetFromRight != stubInsetFromRight;
+}
+
 class SyncedListTabPreview extends StatelessWidget {
   const SyncedListTabPreview({
     super.key,
@@ -654,6 +803,9 @@ class SingleGridTabPreview extends HookConsumerWidget {
   final void Function() onClose;
   final void Function()? onBeforeDelete;
 
+  final Widget? groupToggle;
+  final int depth;
+
   const SingleGridTabPreview({
     required this.tabId,
     required this.activeTabId,
@@ -661,6 +813,8 @@ class SingleGridTabPreview extends HookConsumerWidget {
     required this.sourceSearchQuery,
     this.deleteThreshold = 100,
     this.onBeforeDelete,
+    this.groupToggle,
+    this.depth = 0,
     super.key,
   });
 
@@ -707,6 +861,8 @@ class SingleGridTabPreview extends HookConsumerWidget {
           tabId: tabId,
           isActive: tabId == activeTabId,
           showPinBadge: true,
+          groupToggle: groupToggle,
+          depth: depth,
           onTap: () async {
             if (tabId != activeTabId) {
               //Close first to avoid rebuilds
@@ -740,6 +896,27 @@ class SingleGridTabPreview extends HookConsumerWidget {
               );
             }
           },
+          onCloseSubtree: () async {
+            final subtreeIds = await ref
+                .read(tabDataRepositoryProvider.notifier)
+                .getTabDescendants(tabId)
+                .then((descendants) => descendants.keys.toList());
+            if (!context.mounted) return;
+
+            final didClose = await closeTabsWithConfirmation(
+              context,
+              ref,
+              subtreeIds,
+            );
+
+            if (context.mounted && didClose) {
+              ui_helper.showTabUndoClose(
+                context,
+                ref.read(tabRepositoryProvider.notifier).undoClose,
+                count: subtreeIds.length,
+              );
+            }
+          },
           onDelete: () async {
             onBeforeDelete?.call();
 
@@ -771,6 +948,9 @@ class SingleListTabPreview extends HookConsumerWidget {
   final void Function() onClose;
   final void Function()? onBeforeDelete;
 
+  final Widget? groupToggle;
+  final int depth;
+
   const SingleListTabPreview({
     required this.tabId,
     required this.activeTabId,
@@ -778,6 +958,8 @@ class SingleListTabPreview extends HookConsumerWidget {
     required this.sourceSearchQuery,
     this.deleteThreshold = 100,
     this.onBeforeDelete,
+    this.groupToggle,
+    this.depth = 0,
     super.key,
   });
 
@@ -824,6 +1006,8 @@ class SingleListTabPreview extends HookConsumerWidget {
           tabId: tabId,
           isActive: tabId == activeTabId,
           showPinBadge: true,
+          groupToggle: groupToggle,
+          depth: depth,
           onTap: () async {
             if (tabId != activeTabId) {
               //Close first to avoid rebuilds
@@ -857,6 +1041,27 @@ class SingleListTabPreview extends HookConsumerWidget {
               );
             }
           },
+          onCloseSubtree: () async {
+            final subtreeIds = await ref
+                .read(tabDataRepositoryProvider.notifier)
+                .getTabDescendants(tabId)
+                .then((descendants) => descendants.keys.toList());
+            if (!context.mounted) return;
+
+            final didClose = await closeTabsWithConfirmation(
+              context,
+              ref,
+              subtreeIds,
+            );
+
+            if (context.mounted && didClose) {
+              ui_helper.showTabUndoClose(
+                context,
+                ref.read(tabRepositoryProvider.notifier).undoClose,
+                count: subtreeIds.length,
+              );
+            }
+          },
           onDelete: () async {
             onBeforeDelete?.call();
 

apps/weblibre/lib/features/geckoview/features/browser/presentation/widgets/tab_view/tab_view_header.dart

@@ -427,6 +427,24 @@ class TabViewHeader extends HookConsumerWidget {
                                 ],
                                 child: const Text('Sort'),
                               ),
+                              MenuItemButton(
+                                leadingIcon: Icon(
+                                  filterOptions.showHierarchicalTabs
+                                      ? Icons.check_box
+                                      : Icons.check_box_outline_blank,
+                                ),
+                                onPressed: () {
+                                  ref
+                                      .read(
+                                        tabViewFilterControllerProvider
+                                            .notifier,
+                                      )
+                                      .setShowHierarchicalTabs(
+                                        !filterOptions.showHierarchicalTabs,
+                                      );
+                                },
+                                child: const Text('Hierarchical View'),
+                              ),
                               const Divider(),
                               // Date range picker
                               MenuItemButton(

apps/weblibre/lib/features/geckoview/features/browser/presentation/widgets/tab_view/tab_view_item.dart

@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 2024-2026 Fabian Freund.
+ *
+ * This file is part of WebLibre
+ * (see https://weblibre.eu).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+import 'package:weblibre/features/geckoview/features/tabs/data/entities/tab_entity.dart';
+
+/// Render-time descriptor for one item in the local tabs list/grid.
+///
+/// Unifies the search/flat path and the grouped path so list and grid can
+/// share reorder semantics.
+sealed class TabViewItem {
+  String get tabId;
+  String? get sourceSearchQuery;
+  TabListParentGroup? get parentGroup;
+  TabListChildItem? get childItem;
+
+  const TabViewItem._();
+
+  const factory TabViewItem.search({
+    required String tabId,
+    required String? sourceSearchQuery,
+  }) = SearchTabViewItem;
+
+  const factory TabViewItem.standalone({required String tabId}) =
+      StandaloneTabViewItem;
+
+  const factory TabViewItem.parent({
+    required String tabId,
+    required TabListParentGroup parentGroup,
+  }) = ParentTabViewItem;
+
+  const factory TabViewItem.child({
+    required String tabId,
+    required TabListChildItem childItem,
+  }) = ChildTabViewItem;
+}
+
+class SearchTabViewItem extends TabViewItem {
+  @override
+  final String tabId;
+  @override
+  final String? sourceSearchQuery;
+
+  @override
+  TabListParentGroup? get parentGroup => null;
+
+  @override
+  TabListChildItem? get childItem => null;
+
+  const SearchTabViewItem({
+    required this.tabId,
+    required this.sourceSearchQuery,
+  }) : super._();
+}
+
+class StandaloneTabViewItem extends TabViewItem {
+  @override
+  final String tabId;
+
+  @override
+  String? get sourceSearchQuery => null;
+
+  @override
+  TabListParentGroup? get parentGroup => null;
+
+  @override
+  TabListChildItem? get childItem => null;
+
+  const StandaloneTabViewItem({required this.tabId}) : super._();
+}
+
+class ParentTabViewItem extends TabViewItem {
+  @override
+  final String tabId;
+  @override
+  final TabListParentGroup parentGroup;
+
+  @override
+  String? get sourceSearchQuery => null;
+
+  @override
+  TabListChildItem? get childItem => null;
+
+  const ParentTabViewItem({required this.tabId, required this.parentGroup})
+    : super._();
+}
+
+class ChildTabViewItem extends TabViewItem {
+  @override
+  final String tabId;
+  @override
+  final TabListChildItem childItem;
+
+  @override
+  String? get sourceSearchQuery => null;
+
+  @override
+  TabListParentGroup? get parentGroup => null;
+
+  const ChildTabViewItem({required this.tabId, required this.childItem})
+    : super._();
+}

apps/weblibre/lib/features/geckoview/features/preferences/data/repositories/preference_settings.g.dart

@@ -45,7 +45,7 @@ final class StartupPreferenceEnforcementServiceProvider
 }
 
 String _$startupPreferenceEnforcementServiceHash() =>
-    r'5cfe5aec33a9e9e077704ff519c10b0398c5085d';
+    r'074e09b7f3abd430946dce87ef1c529597e97866';
 
 abstract class _$StartupPreferenceEnforcementService extends $Notifier<void> {
   void build();

apps/weblibre/lib/features/geckoview/features/tabs/data/database/daos/container.dart

@@ -151,6 +151,16 @@ class ContainerDao extends DatabaseAccessor<TabDatabase>
     );
   }
 
+  SingleOrNullSelectable<String> getLastChildTabId(
+    String? containerId,
+    String parentId,
+  ) {
+    return db.definitionsDrift.lastChildTabId(
+      containerId: containerId,
+      parentId: parentId,
+    );
+  }
+
   SingleOrNullSelectable<String> generateOrderKeyAfterTabId(
     String? containerId,
     String tabId,

apps/weblibre/lib/features/geckoview/features/tabs/data/database/daos/tab.dart

@@ -19,6 +19,7 @@
  */
 import 'dart:async';
 
+import 'package:collection/collection.dart';
 import 'package:drift/drift.dart';
 import 'package:lexo_rank/lexo_rank.dart';
 import 'package:nullability/nullability.dart';
@@ -30,7 +31,6 @@ import 'package:weblibre/features/geckoview/features/tabs/data/entities/tab_mode
 import 'package:weblibre/features/geckoview/features/tabs/data/entities/tab_source.dart';
 import 'package:weblibre/features/geckoview/features/tabs/data/models/container_data.dart';
 import 'package:weblibre/features/geckoview/features/tabs/data/models/tab_query_result.dart';
-import 'package:weblibre/features/user/data/models/general_settings.dart';
 
 class SyncTabsResult {
   final Set<String> deletedIsolationContextIds;
@@ -154,35 +154,54 @@ class TabDao extends DatabaseAccessor<TabDatabase> with $TabDaoMixin {
   Future<String> _generateOrderKey({
     required Value<String?> parentId,
     required Value<String?> containerId,
-    required NewTabPosition newTabPosition,
+    Value<String?> afterTabId = const Value.absent(),
   }) async {
-    if (parentId.value.isNotEmpty) {
+    // Explicit "place after this tab" wins regardless of parent.
-      return await db.containerDao
+    if (afterTabId.present && afterTabId.value != null) {
-              .generateOrderKeyAfterTabId(containerId.value, parentId.value!)
+      final key = await db.containerDao
-              .getSingleOrNull() ??
+          .generateOrderKeyAfterTabId(containerId.value, afterTabId.value!)
-          await db.containerDao
+          .getSingleOrNull();
-              .generateLeadingOrderKey(containerId.value)
+      if (key != null) {
-              .getSingle();
+        return key;
-    } else {
+      }
-      return switch (newTabPosition) {
-        NewTabPosition.first =>
-          db.containerDao
-              .generateLeadingOrderKey(containerId.value)
-              .getSingle(),
-        NewTabPosition.end =>
-          db.containerDao
-              .generateTrailingOrderKey(containerId.value)
-              .getSingle(),
-      };
     }
+
+    if (parentId.value.isNotEmpty) {
+      // Place new child after the last existing sibling, falling back to
+      // immediately after the parent if there are none yet.
+      final lastChildId = await db.containerDao
+          .getLastChildTabId(containerId.value, parentId.value!)
+          .getSingleOrNull();
+
+      final anchorTabId = lastChildId ?? parentId.value!;
+
+      final key = await db.containerDao
+          .generateOrderKeyAfterTabId(containerId.value, anchorTabId)
+          .getSingleOrNull();
+      if (key != null) {
+        return key;
+      }
+      // Defensive fallback: covers both "parent row not present" *and* the
+      // cross-container case where the parent lives in a different container
+      // than `containerId.value` (then `getLastChildTabId` and
+      // `generateOrderKeyAfterTabId` both yield null because they filter on
+      // the new container). In either case append to the end.
+    }
+
+    // Root tabs (or unresolved parent) always append to the end of the list.
+    // Display direction is applied at render time via TabListDirection /
+    // TabBarDirection settings, so we never need to insert at the front.
+    return db.containerDao
+        .generateTrailingOrderKey(containerId.value)
+        .getSingle();
   }
 
   Future<String> upsertTabTransactional(
     Future<String> Function() createTab, {
     required Value<String?> parentId,
-    NewTabPosition newTabPosition = NewTabPosition.first,
     Value<String?> containerId = const Value.absent(),
     Value<String?> orderKey = const Value.absent(),
+    Value<String?> afterTabId = const Value.absent(),
     Value<Uri?> url = const Value.absent(),
     Value<String?> title = const Value.absent(),
     Value<TabMode> tabMode = const Value.absent(),
@@ -194,7 +213,7 @@ class TabDao extends DatabaseAccessor<TabDatabase> with $TabDaoMixin {
           await _generateOrderKey(
             parentId: parentId,
             containerId: containerId,
-            newTabPosition: newTabPosition,
+            afterTabId: afterTabId,
           );
       final Value<TabModeDbValue> persistedTabMode = tabMode.present
           ? Value(tabMode.value.toDbValue())
@@ -239,9 +258,9 @@ class TabDao extends DatabaseAccessor<TabDatabase> with $TabDaoMixin {
     String tabId, {
     required TabSource source,
     required Value<String?> parentId,
-    NewTabPosition newTabPosition = NewTabPosition.first,
     Value<String?> containerId = const Value.absent(),
     Value<String?> orderKey = const Value.absent(),
+    Value<String?> afterTabId = const Value.absent(),
     Value<Uri?> url = const Value.absent(),
     Value<String?> title = const Value.absent(),
     Value<TabMode> tabMode = const Value.absent(),
@@ -252,7 +271,7 @@ class TabDao extends DatabaseAccessor<TabDatabase> with $TabDaoMixin {
           await _generateOrderKey(
             parentId: parentId,
             containerId: containerId,
-            newTabPosition: newTabPosition,
+            afterTabId: afterTabId,
           );
       final Value<TabModeDbValue> persistedTabMode = tabMode.present
           ? Value(tabMode.value.toDbValue())
@@ -298,9 +317,265 @@ class TabDao extends DatabaseAccessor<TabDatabase> with $TabDaoMixin {
     return statement.write(TabCompanion(containerId: Value(containerId)));
   }
 
-  Future<void> assignOrderKey(String id, {required String orderKey}) {
+  Future<void> reorderTabs({
-    final statement = _updateByIdStatement(id);
+    required List<String> movingTabIds,
-    return statement.write(TabCompanion(orderKey: Value(orderKey)));
+    required String? previousTabId,
+    required String? nextTabId,
+  }) {
+    if (movingTabIds.isEmpty) {
+      return Future.value();
+    }
+
+    return db.transaction(() async {
+      final anchorIds = [
+        if (previousTabId != null) previousTabId,
+        if (nextTabId != null) nextTabId,
+      ];
+
+      final anchors = anchorIds.isEmpty
+          ? const <String, TabData>{}
+          : {
+              for (final tab in await (select(
+                db.tab,
+              )..where((t) => t.id.isIn(anchorIds))).get())
+                tab.id: tab,
+            };
+
+      final previousTab = previousTabId == null ? null : anchors[previousTabId];
+      final nextTab = nextTabId == null ? null : anchors[nextTabId];
+      final previousRank = previousTab == null
+          ? null
+          : LexoRank.parse(previousTab.orderKey);
+      final nextRank = nextTab == null
+          ? null
+          : LexoRank.parse(nextTab.orderKey);
+
+      final orderKeys = _generateOrderKeysBetween(
+        count: movingTabIds.length,
+        previousRank: previousRank,
+        nextRank: nextRank,
+      );
+
+      await batch((batch) {
+        for (var i = 0; i < movingTabIds.length; i++) {
+          batch.update(
+            db.tab,
+            TabCompanion(orderKey: Value(orderKeys[i])),
+            where: (t) => t.id.equals(movingTabIds[i]),
+          );
+        }
+      });
+    });
+  }
+
+  List<String> _generateOrderKeysBetween({
+    required int count,
+    required LexoRank? previousRank,
+    required LexoRank? nextRank,
+  }) {
+    if (count <= 0) {
+      return const [];
+    }
+
+    if (previousRank == null && nextRank == null) {
+      var rank = LexoRank.middle();
+      return [
+        for (var i = 0; i < count; i++)
+          () {
+            final value = rank.value;
+            rank = rank.genNext();
+            return value;
+          }(),
+      ];
+    }
+
+    if (nextRank == null) {
+      var rank = previousRank!.genNext();
+      return [
+        for (var i = 0; i < count; i++)
+          () {
+            final value = rank.value;
+            rank = rank.genNext();
+            return value;
+          }(),
+      ];
+    }
+
+    if (previousRank == null) {
+      var rank = nextRank;
+      final reversed = <String>[];
+      for (var i = 0; i < count; i++) {
+        rank = rank.genPrev();
+        reversed.add(rank.value);
+      }
+      return reversed.reversed.toList();
+    }
+
+    var upperBound = nextRank;
+    final reversed = <String>[];
+    for (var i = 0; i < count; i++) {
+      upperBound = previousRank.genBetween(upperBound);
+      reversed.add(upperBound.value);
+    }
+    return reversed.reversed.toList();
+  }
+
+  /// Reassigns `order_key` for grandchildren whose parent is being closed so
+  /// they slot into the closing scope at the position previously occupied by
+  /// their (closing) parent. Run *before* the close itself.
+  ///
+  /// Edge cases worth knowing about:
+  ///
+  /// - When the first batch of pending grandchildren has no surviving sibling
+  ///   strictly before them, [previousRank] is `null` (rather than a tab in
+  ///   the parent of the scope's parent). The assigned keys are correct
+  ///   relative to siblings in this scope, but in a flat-by-order_key view
+  ///   (e.g. the tab bar) the promoted children may now sort before unrelated
+  ///   tabs from other scopes that originally sat before the closing tab in
+  ///   storage. Hierarchical views mask this via `tabsWithRootAndDepth`.
+  ///
+  /// - Within a scope, grandchildren are emitted in DFS order through the
+  ///   closing chain (`childrenByParent[closingId]` recursively), not by raw
+  ///   storage order. If a user manually reordered a grandchild to sit after
+  ///   one of its uncles in storage and the uncle is also closing, the DFS
+  ///   walk will re-emit them in tree order — silently overriding the manual
+  ///   key. This is treated as "rebuild the scope on close".
+  ///
+  /// - Only `order_key` is rewritten. `parent_id` is left untouched and is
+  ///   normalised lazily by the `tab_maintain_parent_chain_on_delete` trigger
+  ///   when the close itself runs.
+  Future<void> preservePromotedChildOrderOnClose(Iterable<String> tabIds) {
+    final closingIds = tabIds.toSet();
+    if (closingIds.isEmpty) {
+      return Future.value();
+    }
+
+    return db.transaction(() async {
+      final closingTabs = await (select(
+        db.tab,
+      )..where((t) => t.id.isIn(closingIds))).get();
+
+      if (closingTabs.isEmpty) {
+        return;
+      }
+
+      final directChildren =
+          await (select(db.tab)
+                ..where((t) => t.parentId.isIn(closingIds))
+                ..orderBy([(t) => OrderingTerm.asc(t.orderKey)]))
+              .get();
+
+      final closingTabById = {for (final tab in closingTabs) tab.id: tab};
+      final childrenByParent = <String, List<TabData>>{};
+      for (final child in directChildren) {
+        final parentId = child.parentId;
+        if (parentId == null) continue;
+        childrenByParent.putIfAbsent(parentId, () => []).add(child);
+      }
+
+      final promotedBoundaryCache = <String, List<TabData>>{};
+      List<TabData> promotedBoundaryChildren(String closingTabId) {
+        return promotedBoundaryCache.putIfAbsent(closingTabId, () {
+          final result = <TabData>[];
+          for (final child
+              in childrenByParent[closingTabId] ?? const <TabData>[]) {
+            if (closingIds.contains(child.id)) {
+              result.addAll(promotedBoundaryChildren(child.id));
+            } else {
+              result.add(child);
+            }
+          }
+          return result;
+        });
+      }
+
+      final representativeClosingTabs = closingTabs.where(
+        (tab) => !closingTabById.containsKey(tab.parentId),
+      );
+
+      final closingTabsByScope = groupBy(
+        representativeClosingTabs,
+        (TabData tab) => (containerId: tab.containerId, parentId: tab.parentId),
+      );
+
+      for (final entry in closingTabsByScope.entries) {
+        final scope = entry.key;
+        final scopedClosingTabs = entry.value.sorted(
+          (a, b) => a.orderKey.compareTo(b.orderKey),
+        );
+
+        final sameScopeTabs =
+            await (select(db.tab)
+                  ..where((t) {
+                    final sameContainer = scope.containerId != null
+                        ? t.containerId.equals(scope.containerId!)
+                        : t.containerId.isNull();
+                    final sameParent = scope.parentId != null
+                        ? t.parentId.equals(scope.parentId!)
+                        : t.parentId.isNull();
+
+                    return sameContainer &
+                        sameParent &
+                        t.id.isNotIn(closingIds);
+                  })
+                  ..orderBy([(t) => OrderingTerm.asc(t.orderKey)]))
+                .get();
+
+        var closingIndex = 0;
+        var survivorIndex = 0;
+        LexoRank? previousRank;
+        final pendingChildren = <TabData>[];
+
+        Future<void> assignPendingChildren(LexoRank? nextRank) async {
+          if (pendingChildren.isEmpty) {
+            return;
+          }
+
+          final orderKeys = _generateOrderKeysBetween(
+            count: pendingChildren.length,
+            previousRank: previousRank,
+            nextRank: nextRank,
+          );
+
+          for (var i = 0; i < pendingChildren.length; i++) {
+            await _updateByIdStatement(
+              pendingChildren[i].id,
+            ).write(TabCompanion(orderKey: Value(orderKeys[i])));
+          }
+
+          pendingChildren.clear();
+        }
+
+        while (closingIndex < scopedClosingTabs.length ||
+            survivorIndex < sameScopeTabs.length) {
+          final nextClosing = closingIndex < scopedClosingTabs.length
+              ? scopedClosingTabs[closingIndex]
+              : null;
+          final nextSurvivor = survivorIndex < sameScopeTabs.length
+              ? sameScopeTabs[survivorIndex]
+              : null;
+
+          final takeClosing =
+              nextClosing != null &&
+              (nextSurvivor == null ||
+                  nextClosing.orderKey.compareTo(nextSurvivor.orderKey) < 0);
+
+          if (takeClosing) {
+            pendingChildren.addAll(promotedBoundaryChildren(nextClosing.id));
+            closingIndex++;
+            continue;
+          }
+
+          final survivor = nextSurvivor!;
+          final survivorRank = LexoRank.parse(survivor.orderKey);
+          await assignPendingChildren(survivorRank);
+          previousRank = survivorRank;
+          survivorIndex++;
+        }
+
+        await assignPendingChildren(null);
+      }
+    });
   }
 
   Future<void> touchTab(String id, {required DateTime timestamp}) {
@@ -525,6 +800,16 @@ class TabDao extends DatabaseAccessor<TabDatabase> with $TabDaoMixin {
     );
   }
 
+  SingleOrNullSelectable<String> lastSubtreeTabIdByOrderKey(
+    String tabId, {
+    required String? containerId,
+  }) {
+    return db.definitionsDrift.lastSubtreeTabIdByOrderKey(
+      tabId: tabId,
+      containerId: containerId,
+    );
+  }
+
   Future<List<String>> getUnassignedRegularTabsOlderThan(DateTime threshold) {
     final query = selectOnly(db.tab)
       ..addColumns([db.tab.id])

apps/weblibre/lib/features/geckoview/features/tabs/data/database/database.dart

@@ -31,7 +31,7 @@ import 'package:weblibre/features/search/domain/fts_tokenizer.dart';
 @DriftDatabase(include: {'definitions.drift'}, daos: [ContainerDao, TabDao])
 class TabDatabase extends $TabDatabase with TrigramQueryBuilderMixin {
   @override
-  final int schemaVersion = 7;
+  final int schemaVersion = 8;
 
   @override
   final int ftsTokenLimit = 10;
@@ -118,5 +118,24 @@ class TabDatabase extends $TabDatabase with TrigramQueryBuilderMixin {
     from6To7: (m, schema) async {
       await m.addColumn(schema.tab, schema.tab.isPinned);
     },
+    from7To8: (m, schema) async {
+      // Composite index supporting `tabsWithRootAndDepth` (parent existence
+      // checks scoped per container) and `lastChildTabId` (last child of a
+      // parent within a container). On large containers SQLite was falling
+      // back to per-row scans on the recursive seed.
+      //
+      // Also drop any rows whose `parent_id` references a tab that no
+      // longer exists (e.g. left over from a close that ran without the
+      // delete trigger). `tab_maintain_parent_chain_on_delete` keeps this
+      // clean going forward; the one-shot UPDATE here removes legacy
+      // dangling pointers so the new index is built on consistent data.
+      await m.database.customStatement(
+        'UPDATE tab SET parent_id = NULL '
+        'WHERE parent_id IS NOT NULL '
+        'AND NOT EXISTS (SELECT 1 FROM tab p WHERE p.id = tab.parent_id)',
+      );
+
+      await m.createIndex(schema.idxTabParentContainer);
+    },
   );
 }

apps/weblibre/lib/features/geckoview/features/tabs/data/database/database.drift.dart

@@ -32,6 +32,7 @@ abstract class $TabDatabase extends i0.GeneratedDatabase {
   List<i0.DatabaseSchemaEntity> get allSchemaEntities => [
     container,
     tab,
+    i1.idxTabParentContainer,
     tabFts,
     i1.tabMaintainParentChainOnDelete,
     i1.tabAfterInsert,

apps/weblibre/lib/features/geckoview/features/tabs/data/database/database.steps.dart

@@ -722,12 +722,100 @@ i1.GeneratedColumn<int> _column_19(String aliasedName) =>
       $customConstraints: 'NOT NULL DEFAULT 0',
       defaultValue: const i1.CustomExpression('0'),
     );
+
+final class Schema8 extends i0.VersionedSchema {
+  Schema8({required super.database}) : super(version: 8);
+  @override
+  late final List<i1.DatabaseSchemaEntity> entities = [
+    container,
+    tab,
+    idxTabParentContainer,
+    tabFts,
+    tabMaintainParentChainOnDelete,
+    tabAfterInsert,
+    tabAfterDelete,
+    tabAfterUpdate,
+  ];
+  late final Shape0 container = Shape0(
+    source: i0.VersionedTable(
+      entityName: 'container',
+      withoutRowId: false,
+      isStrict: false,
+      tableConstraints: [],
+      columns: [_column_0, _column_1, _column_2, _column_3],
+      attachedDatabase: database,
+    ),
+    alias: null,
+  );
+  late final Shape5 tab = Shape5(
+    source: i0.VersionedTable(
+      entityName: 'tab',
+      withoutRowId: false,
+      isStrict: false,
+      tableConstraints: [
+        'CHECK((tab_mode = 2 AND isolation_context_id IS NOT NULL)OR(tab_mode != 2 AND isolation_context_id IS NULL))',
+      ],
+      columns: [
+        _column_0,
+        _column_16,
+        _column_4,
+        _column_5,
+        _column_6,
+        _column_7,
+        _column_8,
+        _column_17,
+        _column_18,
+        _column_19,
+        _column_10,
+        _column_11,
+        _column_12,
+        _column_13,
+        _column_14,
+        _column_15,
+      ],
+      attachedDatabase: database,
+    ),
+    alias: null,
+  );
+  final i1.Index idxTabParentContainer = i1.Index(
+    'idx_tab_parent_container',
+    'CREATE INDEX idx_tab_parent_container ON tab (parent_id, container_id)',
+  );
+  late final Shape2 tabFts = Shape2(
+    source: i0.VersionedVirtualTable(
+      entityName: 'tab_fts',
+      moduleAndArgs:
+          'fts5(title, url, extracted_content_plain, full_content_plain, content=tab, tokenize="trigram")',
+      columns: [_column_8, _column_7, _column_12, _column_14],
+      attachedDatabase: database,
+    ),
+    alias: null,
+  );
+  final i1.Trigger tabMaintainParentChainOnDelete = i1.Trigger(
+    'CREATE TRIGGER tab_maintain_parent_chain_on_delete BEFORE DELETE ON tab BEGIN UPDATE tab SET parent_id = CASE WHEN OLD.parent_id IS NOT NULL AND EXISTS (SELECT 1 FROM tab WHERE id = OLD.parent_id) THEN OLD.parent_id ELSE NULL END WHERE parent_id = OLD.id;END',
+    'tab_maintain_parent_chain_on_delete',
+  );
+  final i1.Trigger tabAfterInsert = i1.Trigger(
+    'CREATE TRIGGER tab_after_insert AFTER INSERT ON tab BEGIN INSERT INTO tab_fts ("rowid", title, url, extracted_content_plain, full_content_plain) VALUES (new."rowid", new.title, new.url, new.extracted_content_plain, new.full_content_plain);END',
+    'tab_after_insert',
+  );
+  final i1.Trigger tabAfterDelete = i1.Trigger(
+    'CREATE TRIGGER tab_after_delete AFTER DELETE ON tab BEGIN INSERT INTO tab_fts (tab_fts, "rowid", title, url, extracted_content_plain, full_content_plain) VALUES (\'delete\', old."rowid", old.title, old.url, old.extracted_content_plain, old.full_content_plain);END',
+    'tab_after_delete',
+  );
+  final i1.Trigger tabAfterUpdate = i1.Trigger(
+    'CREATE TRIGGER tab_after_update AFTER UPDATE ON tab BEGIN INSERT INTO tab_fts (tab_fts, "rowid", title, url, extracted_content_plain, full_content_plain) VALUES (\'delete\', old."rowid", old.title, old.url, old.extracted_content_plain, old.full_content_plain);INSERT INTO tab_fts ("rowid", title, url, extracted_content_plain, full_content_plain) VALUES (new."rowid", new.title, new.url, new.extracted_content_plain, new.full_content_plain);END',
+    'tab_after_update',
+  );
+}
+
 i0.MigrationStepWithVersion migrationSteps({
   required Future<void> Function(i1.Migrator m, Schema3 schema) from2To3,
   required Future<void> Function(i1.Migrator m, Schema4 schema) from3To4,
   required Future<void> Function(i1.Migrator m, Schema5 schema) from4To5,
   required Future<void> Function(i1.Migrator m, Schema6 schema) from5To6,
   required Future<void> Function(i1.Migrator m, Schema7 schema) from6To7,
+  required Future<void> Function(i1.Migrator m, Schema8 schema) from7To8,
 }) {
   return (currentVersion, database) async {
     switch (currentVersion) {
@@ -756,6 +844,11 @@ i0.MigrationStepWithVersion migrationSteps({
         final migrator = i1.Migrator(database, schema);
         await from6To7(migrator, schema);
         return 7;
+      case 7:
+        final schema = Schema8(database: database);
+        final migrator = i1.Migrator(database, schema);
+        await from7To8(migrator, schema);
+        return 8;
       default:
         throw ArgumentError.value('Unknown migration from $currentVersion');
     }
@@ -768,6 +861,7 @@ i1.OnUpgrade stepByStep({
   required Future<void> Function(i1.Migrator m, Schema5 schema) from4To5,
   required Future<void> Function(i1.Migrator m, Schema6 schema) from5To6,
   required Future<void> Function(i1.Migrator m, Schema7 schema) from6To7,
+  required Future<void> Function(i1.Migrator m, Schema8 schema) from7To8,
 }) => i0.VersionedSchema.stepByStepHelper(
   step: migrationSteps(
     from2To3: from2To3,
@@ -775,5 +869,6 @@ i1.OnUpgrade stepByStep({
     from4To5: from4To5,
     from5To6: from5To6,
     from6To7: from6To7,
+    from7To8: from7To8,
   ),
 );

apps/weblibre/lib/features/geckoview/features/tabs/data/database/definitions.drift

@@ -37,7 +37,14 @@ CREATE TABLE tab(
   )
 );
 
-CREATE VIRTUAL TABLE tab_fts 
+-- Composite index used by `tabsWithRootAndDepth` (the seed checks
+-- `parent_id IS NULL OR NOT EXISTS(... WHERE p.id = parent_id AND
+-- p.container_id IS :container_id)`) and by `lastChildTabId`
+-- (`WHERE parent_id = ? AND container_id IS ?`). Without it, both queries
+-- degrade to per-row scans on large containers.
+CREATE INDEX idx_tab_parent_container ON tab(parent_id, container_id);
+
+CREATE VIRTUAL TABLE tab_fts
   USING fts5(
     title,
     url,
@@ -123,6 +130,11 @@ trailingOrderKey(REQUIRED :container_id AS TEXT OR NULL, :bucket AS INTEGER):
     )
   );
 
+lastChildTabId(:parent_id AS TEXT, REQUIRED :container_id AS TEXT OR NULL):
+  SELECT id FROM tab
+  WHERE parent_id = :parent_id AND container_id IS :container_id
+  ORDER BY order_key DESC LIMIT 1;
+
 orderKeyAfterTab(:tab_id AS TEXT, REQUIRED :container_id AS TEXT OR NULL):
   WITH ordered_table AS (
     SELECT id,
@@ -249,6 +261,61 @@ ON
   d.timestamp = rs.max_timestamp
 ORDER BY d.timestamp DESC;
 
+-- Returns each tab in a container together with its (recursive) root id and
+-- depth from that root. Drives the grouped-list rendering path. The provider
+-- handles ordering, filter, and direction.
+tabsWithRootAndDepth(REQUIRED :container_id AS TEXT OR NULL):
+  -- Seed the recursion from every tab in the target container whose parent is
+  -- not also in this container (parent NULL, parent missing, or parent moved
+  -- away). This treats a child whose ancestor lives elsewhere as a *local
+  -- root* rather than dropping it from the grouped view entirely.
+  WITH RECURSIVE walk(id, parent_id, order_key, root_id, depth) AS (
+    SELECT t.id, t.parent_id, t.order_key, t.id AS root_id, 0 AS depth
+    FROM tab t
+    WHERE t.container_id IS :container_id
+      AND (
+        t.parent_id IS NULL
+        OR NOT EXISTS (
+          SELECT 1 FROM tab p
+          WHERE p.id = t.parent_id AND p.container_id IS :container_id
+        )
+      )
+
+    UNION ALL
+
+    SELECT t.id, t.parent_id, t.order_key, w.root_id, w.depth + 1
+    FROM tab t
+    INNER JOIN walk w ON t.parent_id = w.id
+    WHERE t.container_id IS :container_id
+  )
+  SELECT id, parent_id, order_key, root_id, depth FROM walk;
+
+-- Returns the id of the tab whose `order_key` is the largest within the
+-- (inclusive) subtree rooted at :tab_id. Used to anchor a sibling insert
+-- *after* the entire subtree of an existing tab.
+--
+-- Contiguity assumption: this query is only correct when subtrees occupy a
+-- contiguous range in `order_key` space. The reorder algorithm preserves
+-- this by moving subtrees as atomic blocks, but legacy rows or a flat
+-- (non-hierarchical) reorder could interleave order_keys across scopes.
+-- In that pathological case the returned anchor is still the largest-keyed
+-- descendant, but it may sit *between* unrelated tabs rather than after the
+-- entire subtree.
+lastSubtreeTabIdByOrderKey(
+  :tab_id AS TEXT,
+  REQUIRED :container_id AS TEXT OR NULL
+):
+  WITH RECURSIVE subtree AS (
+    SELECT id, order_key FROM tab
+    WHERE id = :tab_id AND container_id IS :container_id
+    UNION ALL
+    SELECT t.id, t.order_key
+    FROM tab t
+    INNER JOIN subtree s ON t.parent_id = s.id
+    WHERE t.container_id IS :container_id
+  )
+  SELECT id FROM subtree ORDER BY order_key DESC LIMIT 1;
+
 unorderedTabDescendants:
   WITH RECURSIVE descendants AS (
       SELECT id, parent_id

apps/weblibre/lib/features/geckoview/features/tabs/data/database/definitions.drift.dart

@@ -2060,6 +2060,11 @@ class TabCompanion extends i0.UpdateCompanion<i3.TabData> {
   }
 }
 
+i0.Index get idxTabParentContainer => i0.Index(
+  'idx_tab_parent_container',
+  'CREATE INDEX idx_tab_parent_container ON tab (parent_id, container_id)',
+);
+
 class TabFts extends i0.Table
     with i0.TableInfo<TabFts, i3.TabFt>, i0.VirtualTableInfo<TabFts, i3.TabFt> {
   @override
@@ -2406,6 +2411,20 @@ class DefinitionsDrift extends i9.ModularAccessor {
     ).map((i0.QueryRow row) => row.read<String>('_c0'));
   }
 
+  i0.Selectable<String> lastChildTabId({
+    required String parentId,
+    required String? containerId,
+  }) {
+    return customSelect(
+      'SELECT id FROM tab WHERE parent_id = ?1 AND container_id IS ?2 ORDER BY order_key DESC LIMIT 1',
+      variables: [
+        i0.Variable<String>(parentId),
+        i0.Variable<String>(containerId),
+      ],
+      readsFrom: {tab},
+    ).map((i0.QueryRow row) => row.read<String>('id'));
+  }
+
   i0.Selectable<String> orderKeyAfterTab({
     required String? containerId,
     required String tabId,
@@ -2502,6 +2521,35 @@ class DefinitionsDrift extends i9.ModularAccessor {
     );
   }
 
+  i0.Selectable<TabsWithRootAndDepthResult> tabsWithRootAndDepth({
+    required String? containerId,
+  }) {
+    return customSelect(
+      'WITH RECURSIVE walk (id, parent_id, order_key, root_id, depth) AS (SELECT t.id, t.parent_id, t.order_key, t.id AS root_id, 0 AS depth FROM tab AS t WHERE t.container_id IS ?1 AND(t.parent_id IS NULL OR NOT EXISTS (SELECT 1 FROM tab AS p WHERE p.id = t.parent_id AND p.container_id IS ?1))UNION ALL SELECT t.id, t.parent_id, t.order_key, w.root_id, w.depth + 1 FROM tab AS t INNER JOIN walk AS w ON t.parent_id = w.id WHERE t.container_id IS ?1) SELECT id, parent_id, order_key, root_id, depth FROM walk',
+      variables: [i0.Variable<String>(containerId)],
+      readsFrom: {tab},
+    ).map(
+      (i0.QueryRow row) => TabsWithRootAndDepthResult(
+        id: row.read<String>('id'),
+        parentId: row.readNullable<String>('parent_id'),
+        orderKey: row.read<String>('order_key'),
+        rootId: row.read<String>('root_id'),
+        depth: row.read<int>('depth'),
+      ),
+    );
+  }
+
+  i0.Selectable<String> lastSubtreeTabIdByOrderKey({
+    required String tabId,
+    required String? containerId,
+  }) {
+    return customSelect(
+      'WITH RECURSIVE subtree AS (SELECT id, order_key FROM tab WHERE id = ?1 AND container_id IS ?2 UNION ALL SELECT t.id, t.order_key FROM tab AS t INNER JOIN subtree AS s ON t.parent_id = s.id WHERE t.container_id IS ?2) SELECT id FROM subtree ORDER BY order_key DESC LIMIT 1',
+      variables: [i0.Variable<String>(tabId), i0.Variable<String>(containerId)],
+      readsFrom: {tab},
+    ).map((i0.QueryRow row) => row.read<String>('id'));
+  }
+
   i0.Selectable<UnorderedTabDescendantsResult> unorderedTabDescendants({
     required String tabId,
   }) {
@@ -2658,6 +2706,21 @@ class TabTreesResult {
   });
 }
 
+class TabsWithRootAndDepthResult {
+  final String id;
+  final String? parentId;
+  final String orderKey;
+  final String rootId;
+  final int depth;
+  TabsWithRootAndDepthResult({
+    required this.id,
+    this.parentId,
+    required this.orderKey,
+    required this.rootId,
+    required this.depth,
+  });
+}
+
 class UnorderedTabDescendantsResult {
   final String id;
   final String? parentId;

apps/weblibre/lib/features/geckoview/features/tabs/data/entities/tab_entity.dart

@@ -66,6 +66,94 @@ class SearchResultTabEntity extends TabEntity {
   ];
 }
 
+/// Sealed type for items rendered in the grouped flat list/grid views.
+///
+/// Distinct from [TabEntity] which serves the original flat-only path. The
+/// grouped variant carries enough information to render parent-with-children
+/// blocks while keeping a single ordered top-level list.
+sealed class TabListItemEntity with FastEquatable {
+  String get tabId;
+  String get orderKey;
+  String? get containerId;
+}
+
+class TabListStandaloneItem extends TabListItemEntity {
+  @override
+  final String tabId;
+  @override
+  final String orderKey;
+  @override
+  final String? containerId;
+
+  TabListStandaloneItem({
+    required this.tabId,
+    required this.orderKey,
+    required this.containerId,
+  });
+
+  @override
+  List<Object?> get hashParameters => [tabId, orderKey, containerId];
+}
+
+class TabListParentGroup extends TabListItemEntity {
+  @override
+  final String tabId;
+  @override
+  final String orderKey;
+  @override
+  final String? containerId;
+  final int childCount;
+
+  TabListParentGroup({
+    required this.tabId,
+    required this.orderKey,
+    required this.containerId,
+    required this.childCount,
+  });
+
+  @override
+  List<Object?> get hashParameters => [
+    tabId,
+    orderKey,
+    containerId,
+    childCount,
+  ];
+}
+
+class TabListChildItem extends TabListItemEntity {
+  @override
+  final String tabId;
+  @override
+  final String orderKey;
+  @override
+  final String? containerId;
+  final String parentId;
+  final String rootId;
+  final int depth;
+  final int childCount;
+
+  TabListChildItem({
+    required this.tabId,
+    required this.orderKey,
+    required this.containerId,
+    required this.parentId,
+    required this.rootId,
+    required this.depth,
+    this.childCount = 0,
+  });
+
+  @override
+  List<Object?> get hashParameters => [
+    tabId,
+    orderKey,
+    containerId,
+    parentId,
+    rootId,
+    depth,
+    childCount,
+  ];
+}
+
 class TabTreeEntity extends TabEntity {
   @override
   final String tabId;

apps/weblibre/lib/features/geckoview/features/tabs/domain/providers.dart

@@ -97,6 +97,17 @@ Stream<List<TabTreesResult>> watchTabTrees(Ref ref) {
   return db.definitionsDrift.tabTrees().watch();
 }
 
+@Riverpod()
+Stream<List<TabsWithRootAndDepthResult>> watchTabsWithRootAndDepth(
+  Ref ref,
+  String? containerId,
+) {
+  final db = ref.watch(tabDatabaseProvider);
+  return db.definitionsDrift
+      .tabsWithRootAndDepth(containerId: containerId)
+      .watch();
+}
+
 @Riverpod()
 Stream<Map<String, String?>> watchTabDescendants(Ref ref, String tabId) {
   final db = ref.watch(tabDatabaseProvider);

apps/weblibre/lib/features/geckoview/features/tabs/domain/providers.g.dart

@@ -370,6 +370,89 @@ final class WatchTabTreesProvider
 
 String _$watchTabTreesHash() => r'a2be591acb6818ea8675a12d90e6c4684a0448a8';
 
+@ProviderFor(watchTabsWithRootAndDepth)
+final watchTabsWithRootAndDepthProvider = WatchTabsWithRootAndDepthFamily._();
+
+final class WatchTabsWithRootAndDepthProvider
+    extends
+        $FunctionalProvider<
+          AsyncValue<List<TabsWithRootAndDepthResult>>,
+          List<TabsWithRootAndDepthResult>,
+          Stream<List<TabsWithRootAndDepthResult>>
+        >
+    with
+        $FutureModifier<List<TabsWithRootAndDepthResult>>,
+        $StreamProvider<List<TabsWithRootAndDepthResult>> {
+  WatchTabsWithRootAndDepthProvider._({
+    required WatchTabsWithRootAndDepthFamily super.from,
+    required String? super.argument,
+  }) : super(
+         retry: null,
+         name: r'watchTabsWithRootAndDepthProvider',
+         isAutoDispose: true,
+         dependencies: null,
+         $allTransitiveDependencies: null,
+       );
+
+  @override
+  String debugGetCreateSourceHash() => _$watchTabsWithRootAndDepthHash();
+
+  @override
+  String toString() {
+    return r'watchTabsWithRootAndDepthProvider'
+        ''
+        '($argument)';
+  }
+
+  @$internal
+  @override
+  $StreamProviderElement<List<TabsWithRootAndDepthResult>> $createElement(
+    $ProviderPointer pointer,
+  ) => $StreamProviderElement(pointer);
+
+  @override
+  Stream<List<TabsWithRootAndDepthResult>> create(Ref ref) {
+    final argument = this.argument as String?;
+    return watchTabsWithRootAndDepth(ref, argument);
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return other is WatchTabsWithRootAndDepthProvider &&
+        other.argument == argument;
+  }
+
+  @override
+  int get hashCode {
+    return argument.hashCode;
+  }
+}
+
+String _$watchTabsWithRootAndDepthHash() =>
+    r'dd485f4f60924e90f1f338237401dc95ca7e123f';
+
+final class WatchTabsWithRootAndDepthFamily extends $Family
+    with
+        $FunctionalFamilyOverride<
+          Stream<List<TabsWithRootAndDepthResult>>,
+          String?
+        > {
+  WatchTabsWithRootAndDepthFamily._()
+    : super(
+        retry: null,
+        name: r'watchTabsWithRootAndDepthProvider',
+        dependencies: null,
+        $allTransitiveDependencies: null,
+        isAutoDispose: true,
+      );
+
+  WatchTabsWithRootAndDepthProvider call(String? containerId) =>
+      WatchTabsWithRootAndDepthProvider._(argument: containerId, from: this);
+
+  @override
+  String toString() => r'watchTabsWithRootAndDepthProvider';
+}
+
 @ProviderFor(watchTabDescendants)
 final watchTabDescendantsProvider = WatchTabDescendantsFamily._();
 

apps/weblibre/lib/features/geckoview/features/tabs/domain/repositories/tab.dart

@@ -122,11 +122,19 @@ class TabDataRepository extends _$TabDataRepository {
         .setPinned(tabId, pinned: pinned);
   }
 
-  Future<void> assignOrderKey(String tabId, String orderKey) {
+  Future<void> reorderTabs({
+    required List<String> movingTabIds,
+    required String? previousTabId,
+    required String? nextTabId,
+  }) {
     return ref
         .read(tabDatabaseProvider)
         .tabDao
-        .assignOrderKey(tabId, orderKey: orderKey);
+        .reorderTabs(
+          movingTabIds: movingTabIds,
+          previousTabId: previousTabId,
+          nextTabId: nextTabId,
+        );
   }
 
   Future<int> closeAllTabs({

apps/weblibre/lib/features/geckoview/features/tabs/domain/repositories/tab.g.dart

@@ -41,7 +41,7 @@ final class TabDataRepositoryProvider
   }
 }
 
-String _$tabDataRepositoryHash() => r'e6482b5408aa567f626d2f0a9455b2cc908ba84f';
+String _$tabDataRepositoryHash() => r'e14144f832ce32e1ae349df8970d025036526bc0';
 
 abstract class _$TabDataRepository extends $Notifier<void> {
   void build();

apps/weblibre/lib/features/settings/presentation/screens/browsing_settings.dart

@@ -69,7 +69,8 @@ class _TabsSection extends StatelessWidget {
         SettingSection(name: 'Tabs'),
         _NewTabDefaultSection(),
         _SmallWebTabDefaultSection(),
-        _NewTabPositionSection(),
+        _TabListDirectionSection(),
+        _TabBarDirectionSection(),
         _ShowContainerUiTile(),
         _ShowIsolatedTabUiTile(),
         _CreateChildTabsTile(),
@@ -340,13 +341,13 @@ class _ExternalLinkHandlingSection extends HookConsumerWidget {
   }
 }
 
-class _NewTabPositionSection extends HookConsumerWidget {
+class _TabListDirectionSection extends HookConsumerWidget {
-  const _NewTabPositionSection();
+  const _TabListDirectionSection();
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
-    final newTabPosition = ref.watch(
+    final direction = ref.watch(
-      generalSettingsWithDefaultsProvider.select((s) => s.newTabPosition),
+      generalSettingsWithDefaultsProvider.select((s) => s.tabListDirection),
     );
 
     return Padding(
@@ -356,8 +357,65 @@ class _NewTabPositionSection extends HookConsumerWidget {
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
           const ListTile(
-            title: Text('New Tab Position'),
+            title: Text('Tab List Direction'),
-            subtitle: Text('Choose where newly created tabs appear by default'),
+            subtitle: Text(
+              'Choose whether the newest tab appears at the top or bottom of the tab list',
+            ),
+            leading: Icon(MdiIcons.formatListBulleted),
+            contentPadding: EdgeInsets.zero,
+          ),
+          Center(
+            child: SegmentedButton(
+              showSelectedIcon: false,
+              segments: const [
+                ButtonSegment(
+                  value: TabListDirection.newestFirst,
+                  label: Text('Newest first'),
+                  icon: Icon(MdiIcons.arrowCollapseUp),
+                ),
+                ButtonSegment(
+                  value: TabListDirection.oldestFirst,
+                  label: Text('Oldest first'),
+                  icon: Icon(MdiIcons.arrowCollapseDown),
+                ),
+              ],
+              selected: {direction},
+              onSelectionChanged: (value) async {
+                await ref
+                    .read(saveGeneralSettingsControllerProvider.notifier)
+                    .save(
+                      (currentSettings) => currentSettings.copyWith
+                          .tabListDirection(value.first),
+                    );
+              },
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+class _TabBarDirectionSection extends HookConsumerWidget {
+  const _TabBarDirectionSection();
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final direction = ref.watch(
+      generalSettingsWithDefaultsProvider.select((s) => s.tabBarDirection),
+    );
+
+    return Padding(
+      padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 8),
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          const ListTile(
+            title: Text('Tab Bar Direction'),
+            subtitle: Text(
+              'Choose whether the newest tab appears on the left or right of the quick switcher',
+            ),
             leading: Icon(MdiIcons.reorderHorizontal),
             contentPadding: EdgeInsets.zero,
           ),
@@ -366,23 +424,23 @@ class _NewTabPositionSection extends HookConsumerWidget {
               showSelectedIcon: false,
               segments: const [
                 ButtonSegment(
-                  value: NewTabPosition.first,
+                  value: TabBarDirection.newestFirst,
-                  label: Text('First'),
+                  label: Text('Newest first'),
                   icon: Icon(MdiIcons.arrowCollapseLeft),
                 ),
                 ButtonSegment(
-                  value: NewTabPosition.end,
+                  value: TabBarDirection.oldestFirst,
-                  label: Text('End'),
+                  label: Text('Oldest first'),
                   icon: Icon(MdiIcons.arrowCollapseRight),
                 ),
               ],
-              selected: {newTabPosition},
+              selected: {direction},
               onSelectionChanged: (value) async {
                 await ref
                     .read(saveGeneralSettingsControllerProvider.notifier)
                     .save(
                       (currentSettings) =>
-                          currentSettings.copyWith.newTabPosition(value.first),
+                          currentSettings.copyWith.tabBarDirection(value.first),
                     );
               },
             ),

apps/weblibre/lib/features/settings/presentation/screens/contextual_toolbar_settings.dart

@@ -106,8 +106,13 @@ class ContextualToolbarSettingsScreen extends HookConsumerWidget {
             else
               SliverReorderableList(
                 itemCount: visibleConfigs.length,
-                onReorder: (oldIndex, newIndex) =>
+                onReorder: (oldIndex, newIndex) => _onReorder(
-                    _onReorder(visibleConfigs, oldIndex, newIndex, repository),
+                  visibleConfigs,
+                  oldIndex,
+                  newIndex,
+                  repository,
+                  isVisible: true,
+                ),
                 itemBuilder: (context, index) {
                   final config = visibleConfigs[index];
                   return _ToolbarButtonConfigTile(
@@ -145,8 +150,13 @@ class ContextualToolbarSettingsScreen extends HookConsumerWidget {
             else
               SliverReorderableList(
                 itemCount: hiddenConfigs.length,
-                onReorder: (oldIndex, newIndex) =>
+                onReorder: (oldIndex, newIndex) => _onReorder(
-                    _onReorder(hiddenConfigs, oldIndex, newIndex, repository),
+                  hiddenConfigs,
+                  oldIndex,
+                  newIndex,
+                  repository,
+                  isVisible: false,
+                ),
                 itemBuilder: (context, index) {
                   final config = hiddenConfigs[index];
                   return _ToolbarButtonConfigTile(
@@ -180,8 +190,9 @@ class ContextualToolbarSettingsScreen extends HookConsumerWidget {
     List<ToolbarButtonConfig> configs,
     int oldIndex,
     int newIndex,
-    ContextualToolbarConfigRepository repository,
+    ContextualToolbarConfigRepository repository, {
-  ) {
+    required bool isVisible,
+  }) {
     if (oldIndex == newIndex) return;
     final reorder = _resolveToolbarReorder(configs, oldIndex, newIndex);
     if (reorder.targetIndex == oldIndex) return;
@@ -192,6 +203,7 @@ class ContextualToolbarSettingsScreen extends HookConsumerWidget {
         oldIndex,
         reorder.targetIndex,
         reorder.movedId,
+        isVisible: isVisible,
       ),
     );
   }
@@ -201,22 +213,33 @@ class ContextualToolbarSettingsScreen extends HookConsumerWidget {
     List<ToolbarButtonConfig> configs,
     int oldIndex,
     int targetIndex,
-    String movedId,
+    String movedId, {
-  ) async {
+    required bool isVisible,
+  }) async {
+    // [configs] still contains the moved item. [targetIndex] is the
+    // post-removal destination index, clamped to [0, configs.length - 1].
+    // Because of the clamp, `>= configs.length - 1` only fires when the user
+    // dropped past the very last surviving item; `configs[targetIndex + 1]`
+    // is otherwise always a valid neighbour in the original list (since the
+    // moved item sits at oldIndex < targetIndex + 1 in the else branch).
     final String orderKey;
     if (targetIndex <= 0) {
-      orderKey = await repository.generateLeadingOrderKey();
+      orderKey = await repository.generateLeadingOrderKey(isVisible: isVisible);
     } else if (targetIndex >= configs.length - 1) {
-      orderKey = await repository.generateTrailingOrderKey();
+      orderKey = await repository.generateTrailingOrderKey(
+        isVisible: isVisible,
+      );
     } else if (targetIndex < oldIndex) {
       orderKey =
           await repository.generateOrderKeyAfterButtonId(
             configs[targetIndex - 1].buttonId,
+            isVisible: isVisible,
           ) ??
-          await repository.generateLeadingOrderKey();
+          await repository.generateLeadingOrderKey(isVisible: isVisible);
     } else {
       orderKey = await repository.generateOrderKeyBeforeButtonId(
         configs[targetIndex + 1].buttonId,
+        isVisible: isVisible,
       );
     }
     await repository.assignOrderKey(movedId, orderKey: orderKey);

apps/weblibre/lib/features/user/data/database/daos/toolbar_button_config.dart

@@ -44,9 +44,24 @@ class ToolbarButtonConfigDao extends DatabaseAccessor<UserDatabase>
           .write(ToolbarButtonConfigsCompanion(orderKey: Value(orderKey)));
 
   Future<void> assignVisibility(String buttonId, {required bool visible}) =>
-      (update(db.toolbarButtonConfigs)
+      transaction(() async {
-            ..where((t) => t.buttonId.equals(buttonId)))
+        // Land the toggled button at the trailing edge of its *new* section
-          .write(ToolbarButtonConfigsCompanion(isVisible: Value(visible)));
+        // so its order_key always stays inside the visibility partition.
+        // Without this, a button keeps the key it was assigned in the other
+        // section and lands at an arbitrary position after the toggle.
+        final orderKey = await generateTrailingOrderKey(
+          isVisible: visible,
+        ).getSingle();
+
+        await (update(
+          db.toolbarButtonConfigs,
+        )..where((t) => t.buttonId.equals(buttonId))).write(
+          ToolbarButtonConfigsCompanion(
+            isVisible: Value(visible),
+            orderKey: Value(orderKey),
+          ),
+        );
+      });
 
   Future<void> assignFallback(String buttonId, String? fallbackId) =>
       (update(db.toolbarButtonConfigs)
@@ -74,7 +89,9 @@ class ToolbarButtonConfigDao extends DatabaseAccessor<UserDatabase>
     await transaction(() async {
       final inserted = <ToolbarButtonConfig>[];
       for (final def in missing) {
-        final orderKey = await generateTrailingOrderKey().getSingle();
+        final orderKey = await generateTrailingOrderKey(
+          isVisible: def.defaultVisible,
+        ).getSingle();
         inserted.add(
           ToolbarButtonConfig(
             buttonId: def.buttonId,
@@ -96,18 +113,37 @@ class ToolbarButtonConfigDao extends DatabaseAccessor<UserDatabase>
     });
   }
 
-  SingleSelectable<String> generateLeadingOrderKey({int bucket = 0}) =>
+  SingleSelectable<String> generateLeadingOrderKey({
-      db.definitionsDrift.toolbarLeadingOrderKey(bucket: bucket);
+    int bucket = 0,
+    required bool isVisible,
+  }) => db.definitionsDrift.toolbarLeadingOrderKey(
+    bucket: bucket,
+    isVisible: isVisible,
+  );
 
-  SingleSelectable<String> generateTrailingOrderKey({int bucket = 0}) =>
+  SingleSelectable<String> generateTrailingOrderKey({
-      db.definitionsDrift.toolbarTrailingOrderKey(bucket: bucket);
+    int bucket = 0,
+    required bool isVisible,
+  }) => db.definitionsDrift.toolbarTrailingOrderKey(
+    bucket: bucket,
+    isVisible: isVisible,
+  );
 
   SingleOrNullSelectable<String> generateOrderKeyAfterButtonId(
-    String buttonId,
+    String buttonId, {
-  ) => db.definitionsDrift.toolbarOrderKeyAfterButton(buttonId: buttonId);
+    required bool isVisible,
+  }) => db.definitionsDrift.toolbarOrderKeyAfterButton(
+    buttonId: buttonId,
+    isVisible: isVisible,
+  );
 
-  SingleSelectable<String> generateOrderKeyBeforeButtonId(String buttonId) =>
+  SingleSelectable<String> generateOrderKeyBeforeButtonId(
-      db.definitionsDrift.toolbarOrderKeyBeforeButton(buttonId: buttonId);
+    String buttonId, {
+    required bool isVisible,
+  }) => db.definitionsDrift.toolbarOrderKeyBeforeButton(
+    buttonId: buttonId,
+    isVisible: isVisible,
+  );
 
   Future<void> _insertWithDeferredFallbacks(
     List<ToolbarButtonConfig> configs,

apps/weblibre/lib/features/user/data/database/definitions.drift

@@ -31,47 +31,56 @@ CREATE TABLE toolbar_button_configs (
 
 CREATE INDEX idx_toolbar_order_key ON toolbar_button_configs(order_key);
 
-toolbarLeadingOrderKey(:bucket AS INTEGER):
+-- All four queries are scoped to a visibility partition (`is_visible`) so the
+-- generated key falls strictly within the targeted section. The Customize
+-- Toolbar UI renders Enabled and Disabled as two independent reorderable
+-- lists; without the partition, leading/trailing keys would cross the section
+-- boundary and surface as buttons "jumping" after a visibility toggle.
+toolbarLeadingOrderKey(:bucket AS INTEGER, :is_visible AS BOOL):
   SELECT lexo_rank_previous(
     :bucket,
     (
       SELECT order_key
       FROM toolbar_button_configs
+      WHERE is_visible = :is_visible
       ORDER BY order_key
       LIMIT 1
     )
   );
 
-toolbarTrailingOrderKey(:bucket AS INTEGER):
+toolbarTrailingOrderKey(:bucket AS INTEGER, :is_visible AS BOOL):
   SELECT lexo_rank_next(
     :bucket,
     (
       SELECT order_key
       FROM toolbar_button_configs
+      WHERE is_visible = :is_visible
       ORDER BY order_key DESC
       LIMIT 1
     )
   );
 
-toolbarOrderKeyAfterButton(:button_id AS TEXT):
+toolbarOrderKeyAfterButton(:button_id AS TEXT, :is_visible AS BOOL):
   WITH ordered_table AS (
     SELECT
       button_id,
       order_key,
       LEAD(order_key) OVER (ORDER BY order_key) AS next_order_key
     FROM toolbar_button_configs
+    WHERE is_visible = :is_visible
   )
   SELECT lexo_rank_reorder_after(order_key, next_order_key)
   FROM ordered_table
   WHERE button_id = :button_id;
 
-toolbarOrderKeyBeforeButton(:button_id AS TEXT):
+toolbarOrderKeyBeforeButton(:button_id AS TEXT, :is_visible AS BOOL):
   WITH ordered_table AS (
     SELECT
       button_id,
       order_key,
       LAG(order_key) OVER (ORDER BY order_key) AS prev_order_key
     FROM toolbar_button_configs
+    WHERE is_visible = :is_visible
   )
   SELECT lexo_rank_reorder_before(order_key, prev_order_key)
   FROM ordered_table

apps/weblibre/lib/features/user/data/database/definitions.drift.dart

@@ -2024,36 +2024,46 @@ i0.Index get idxToolbarOrderKey => i0.Index(
 
 class DefinitionsDrift extends i3.ModularAccessor {
   DefinitionsDrift(i0.GeneratedDatabase db) : super(db);
-  i0.Selectable<String> toolbarLeadingOrderKey({required int bucket}) {
+  i0.Selectable<String> toolbarLeadingOrderKey({
+    required int bucket,
+    required bool isVisible,
+  }) {
     return customSelect(
-      'SELECT lexo_rank_previous(?1, (SELECT order_key FROM toolbar_button_configs ORDER BY order_key LIMIT 1)) AS _c0',
+      'SELECT lexo_rank_previous(?1, (SELECT order_key FROM toolbar_button_configs WHERE is_visible = ?2 ORDER BY order_key LIMIT 1)) AS _c0',
-      variables: [i0.Variable<int>(bucket)],
+      variables: [i0.Variable<int>(bucket), i0.Variable<bool>(isVisible)],
       readsFrom: {toolbarButtonConfigs},
     ).map((i0.QueryRow row) => row.read<String>('_c0'));
   }
 
-  i0.Selectable<String> toolbarTrailingOrderKey({required int bucket}) {
+  i0.Selectable<String> toolbarTrailingOrderKey({
+    required int bucket,
+    required bool isVisible,
+  }) {
     return customSelect(
-      'SELECT lexo_rank_next(?1, (SELECT order_key FROM toolbar_button_configs ORDER BY order_key DESC LIMIT 1)) AS _c0',
+      'SELECT lexo_rank_next(?1, (SELECT order_key FROM toolbar_button_configs WHERE is_visible = ?2 ORDER BY order_key DESC LIMIT 1)) AS _c0',
-      variables: [i0.Variable<int>(bucket)],
+      variables: [i0.Variable<int>(bucket), i0.Variable<bool>(isVisible)],
       readsFrom: {toolbarButtonConfigs},
     ).map((i0.QueryRow row) => row.read<String>('_c0'));
   }
 
-  i0.Selectable<String> toolbarOrderKeyAfterButton({required String buttonId}) {
+  i0.Selectable<String> toolbarOrderKeyAfterButton({
+    required bool isVisible,
+    required String buttonId,
+  }) {
     return customSelect(
-      'WITH ordered_table AS (SELECT button_id, order_key, LEAD(order_key)OVER (ORDER BY order_key RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW EXCLUDE NO OTHERS) AS next_order_key FROM toolbar_button_configs) SELECT lexo_rank_reorder_after(order_key, next_order_key) AS _c0 FROM ordered_table WHERE button_id = ?1',
+      'WITH ordered_table AS (SELECT button_id, order_key, LEAD(order_key)OVER (ORDER BY order_key RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW EXCLUDE NO OTHERS) AS next_order_key FROM toolbar_button_configs WHERE is_visible = ?1) SELECT lexo_rank_reorder_after(order_key, next_order_key) AS _c0 FROM ordered_table WHERE button_id = ?2',
-      variables: [i0.Variable<String>(buttonId)],
+      variables: [i0.Variable<bool>(isVisible), i0.Variable<String>(buttonId)],
       readsFrom: {toolbarButtonConfigs},
     ).map((i0.QueryRow row) => row.read<String>('_c0'));
   }
 
   i0.Selectable<String> toolbarOrderKeyBeforeButton({
+    required bool isVisible,
     required String buttonId,
   }) {
     return customSelect(
-      'WITH ordered_table AS (SELECT button_id, order_key, LAG(order_key)OVER (ORDER BY order_key RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW EXCLUDE NO OTHERS) AS prev_order_key FROM toolbar_button_configs) SELECT lexo_rank_reorder_before(order_key, prev_order_key) AS _c0 FROM ordered_table WHERE button_id = ?1',
+      'WITH ordered_table AS (SELECT button_id, order_key, LAG(order_key)OVER (ORDER BY order_key RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW EXCLUDE NO OTHERS) AS prev_order_key FROM toolbar_button_configs WHERE is_visible = ?1) SELECT lexo_rank_reorder_before(order_key, prev_order_key) AS _c0 FROM ordered_table WHERE button_id = ?2',
-      variables: [i0.Variable<String>(buttonId)],
+      variables: [i0.Variable<bool>(isVisible), i0.Variable<String>(buttonId)],
       readsFrom: {toolbarButtonConfigs},
     ).map((i0.QueryRow row) => row.read<String>('_c0'));
   }

apps/weblibre/lib/features/user/data/models/general_settings.dart

@@ -46,7 +46,9 @@ enum QuickTabSwitcherMode { lastUsedTabs, containerTabs }
 
 enum TabIntentOpenSetting { regular, private, ask }
 
-enum NewTabPosition { first, end }
+enum TabListDirection { newestFirst, oldestFirst }
+
+enum TabBarDirection { newestFirst, oldestFirst }
 
 enum TabBarPosition { top, bottom }
 
@@ -86,7 +88,8 @@ class GeneralSettings with FastEquatable {
   final bool showIsolatedTabUi;
   @JsonKey(name: 'defaultCreateTabType')
   final TabType storedDefaultCreateTabType;
-  final NewTabPosition newTabPosition;
+  final TabListDirection tabListDirection;
+  final TabBarDirection tabBarDirection;
   final TabIntentOpenSetting tabIntentOpenSetting;
   final bool autoHideTabBar;
   final TabBarSwipeAction tabBarSwipeAction;
@@ -140,7 +143,8 @@ class GeneralSettings with FastEquatable {
     required this.showContainerUi,
     required this.showIsolatedTabUi,
     required this.storedDefaultCreateTabType,
-    required this.newTabPosition,
+    required this.tabListDirection,
+    required this.tabBarDirection,
     required this.tabIntentOpenSetting,
     required this.autoHideTabBar,
     required this.tabBarSwipeAction,
@@ -195,7 +199,8 @@ class GeneralSettings with FastEquatable {
     bool? showContainerUi,
     bool? showIsolatedTabUi,
     TabType? storedDefaultCreateTabType,
-    NewTabPosition? newTabPosition,
+    TabListDirection? tabListDirection,
+    TabBarDirection? tabBarDirection,
     TabIntentOpenSetting? tabIntentOpenSetting,
     bool? autoHideTabBar,
     TabBarSwipeAction? tabBarSwipeAction,
@@ -248,7 +253,8 @@ class GeneralSettings with FastEquatable {
        showIsolatedTabUi = showIsolatedTabUi ?? true,
        storedDefaultCreateTabType =
            storedDefaultCreateTabType ?? TabType.regular,
-       newTabPosition = newTabPosition ?? NewTabPosition.first,
+       tabListDirection = tabListDirection ?? TabListDirection.newestFirst,
+       tabBarDirection = tabBarDirection ?? TabBarDirection.newestFirst,
        tabIntentOpenSetting = tabIntentOpenSetting ?? TabIntentOpenSetting.ask,
        autoHideTabBar = autoHideTabBar ?? true,
        tabBarSwipeAction =
@@ -295,8 +301,23 @@ class GeneralSettings with FastEquatable {
        blockExternalAppsEnabled = blockExternalAppsEnabled ?? false,
        externalAppIntentPolicies = externalAppIntentPolicies ?? const {};
 
-  factory GeneralSettings.fromJson(Map<String, dynamic> json) =>
+  factory GeneralSettings.fromJson(Map<String, dynamic> json) {
-      _$GeneralSettingsFromJson(json);
+    // Migrate legacy `newTabPosition` setting to direction settings.
+    // Old `first` (new tabs at top) → newestFirst; `end` → oldestFirst.
+    // TODO: Drop this fallback (and the `newTabPosition` row in the user
+    // settings DB) once enough releases have shipped that rolling back to a
+    // version without `tabListDirection`/`tabBarDirection` is no longer a
+    // concern.
+    final legacyNewTabPosition = json['newTabPosition'];
+    if (legacyNewTabPosition != null) {
+      final mapped = legacyNewTabPosition == 'end'
+          ? 'oldestFirst'
+          : 'newestFirst';
+      json.putIfAbsent('tabListDirection', () => mapped);
+      json.putIfAbsent('tabBarDirection', () => mapped);
+    }
+    return _$GeneralSettingsFromJson(json);
+  }
 
   Map<String, dynamic> toJson() => _$GeneralSettingsToJson(this);
 
@@ -332,7 +353,8 @@ class GeneralSettings with FastEquatable {
     showContainerUi,
     showIsolatedTabUi,
     storedDefaultCreateTabType,
-    newTabPosition,
+    tabListDirection,
+    tabBarDirection,
     tabIntentOpenSetting,
     autoHideTabBar,
     tabBarSwipeAction,

apps/weblibre/lib/features/user/data/models/general_settings.g.dart

@@ -43,7 +43,9 @@ abstract class _$GeneralSettingsCWProxy {
     TabType storedDefaultCreateTabType,
   );
 
-  GeneralSettings newTabPosition(NewTabPosition newTabPosition);
+  GeneralSettings tabListDirection(TabListDirection tabListDirection);
+
+  GeneralSettings tabBarDirection(TabBarDirection tabBarDirection);
 
   GeneralSettings tabIntentOpenSetting(
     TabIntentOpenSetting tabIntentOpenSetting,
@@ -154,7 +156,8 @@ abstract class _$GeneralSettingsCWProxy {
     bool showContainerUi,
     bool showIsolatedTabUi,
     TabType storedDefaultCreateTabType,
-    NewTabPosition newTabPosition,
+    TabListDirection tabListDirection,
+    TabBarDirection tabBarDirection,
     TabIntentOpenSetting tabIntentOpenSetting,
     bool autoHideTabBar,
     TabBarSwipeAction tabBarSwipeAction,
@@ -265,8 +268,12 @@ class _$GeneralSettingsCWProxyImpl implements _$GeneralSettingsCWProxy {
   ) => call(storedDefaultCreateTabType: storedDefaultCreateTabType);
 
   @override
-  GeneralSettings newTabPosition(NewTabPosition newTabPosition) =>
+  GeneralSettings tabListDirection(TabListDirection tabListDirection) =>
-      call(newTabPosition: newTabPosition);
+      call(tabListDirection: tabListDirection);
+
+  @override
+  GeneralSettings tabBarDirection(TabBarDirection tabBarDirection) =>
+      call(tabBarDirection: tabBarDirection);
 
   @override
   GeneralSettings tabIntentOpenSetting(
@@ -447,7 +454,8 @@ class _$GeneralSettingsCWProxyImpl implements _$GeneralSettingsCWProxy {
     Object? showContainerUi = const $CopyWithPlaceholder(),
     Object? showIsolatedTabUi = const $CopyWithPlaceholder(),
     Object? storedDefaultCreateTabType = const $CopyWithPlaceholder(),
-    Object? newTabPosition = const $CopyWithPlaceholder(),
+    Object? tabListDirection = const $CopyWithPlaceholder(),
+    Object? tabBarDirection = const $CopyWithPlaceholder(),
     Object? tabIntentOpenSetting = const $CopyWithPlaceholder(),
     Object? autoHideTabBar = const $CopyWithPlaceholder(),
     Object? tabBarSwipeAction = const $CopyWithPlaceholder(),
@@ -572,12 +580,18 @@ class _$GeneralSettingsCWProxyImpl implements _$GeneralSettingsCWProxy {
           ? _value.storedDefaultCreateTabType
           // ignore: cast_nullable_to_non_nullable
           : storedDefaultCreateTabType as TabType,
-      newTabPosition:
+      tabListDirection:
-          newTabPosition == const $CopyWithPlaceholder() ||
+          tabListDirection == const $CopyWithPlaceholder() ||
-              newTabPosition == null
+              tabListDirection == null
-          ? _value.newTabPosition
+          ? _value.tabListDirection
           // ignore: cast_nullable_to_non_nullable
-          : newTabPosition as NewTabPosition,
+          : tabListDirection as TabListDirection,
+      tabBarDirection:
+          tabBarDirection == const $CopyWithPlaceholder() ||
+              tabBarDirection == null
+          ? _value.tabBarDirection
+          // ignore: cast_nullable_to_non_nullable
+          : tabBarDirection as TabBarDirection,
       tabIntentOpenSetting:
           tabIntentOpenSetting == const $CopyWithPlaceholder() ||
               tabIntentOpenSetting == null
@@ -836,9 +850,13 @@ GeneralSettings _$GeneralSettingsFromJson(
     _$TabTypeEnumMap,
     json['defaultCreateTabType'],
   ),
-  newTabPosition: $enumDecodeNullable(
+  tabListDirection: $enumDecodeNullable(
-    _$NewTabPositionEnumMap,
+    _$TabListDirectionEnumMap,
-    json['newTabPosition'],
+    json['tabListDirection'],
+  ),
+  tabBarDirection: $enumDecodeNullable(
+    _$TabBarDirectionEnumMap,
+    json['tabBarDirection'],
   ),
   tabIntentOpenSetting: $enumDecodeNullable(
     _$TabIntentOpenSettingEnumMap,
@@ -937,7 +955,8 @@ Map<String, dynamic> _$GeneralSettingsToJson(
   'showIsolatedTabUi': instance.showIsolatedTabUi,
   'defaultCreateTabType':
       _$TabTypeEnumMap[instance.storedDefaultCreateTabType]!,
-  'newTabPosition': _$NewTabPositionEnumMap[instance.newTabPosition]!,
+  'tabListDirection': _$TabListDirectionEnumMap[instance.tabListDirection]!,
+  'tabBarDirection': _$TabBarDirectionEnumMap[instance.tabBarDirection]!,
   'tabIntentOpenSetting':
       _$TabIntentOpenSettingEnumMap[instance.tabIntentOpenSetting]!,
   'autoHideTabBar': instance.autoHideTabBar,
@@ -1012,9 +1031,14 @@ const _$TabTypeEnumMap = {
   TabType.isolated: 'isolated',
 };
 
-const _$NewTabPositionEnumMap = {
+const _$TabListDirectionEnumMap = {
-  NewTabPosition.first: 'first',
+  TabListDirection.newestFirst: 'newestFirst',
-  NewTabPosition.end: 'end',
+  TabListDirection.oldestFirst: 'oldestFirst',
+};
+
+const _$TabBarDirectionEnumMap = {
+  TabBarDirection.newestFirst: 'newestFirst',
+  TabBarDirection.oldestFirst: 'oldestFirst',
 };
 
 const _$TabIntentOpenSettingEnumMap = {

apps/weblibre/lib/features/user/domain/repositories/general_settings.dart

@@ -106,6 +106,14 @@ class GeneralSettingsRepository extends _$GeneralSettingsRepository {
         DriftSqlType.string,
         db.typeMapping,
       ),
+      'tabListDirection': settings['tabListDirection']?.readAs(
+        DriftSqlType.string,
+        db.typeMapping,
+      ),
+      'tabBarDirection': settings['tabBarDirection']?.readAs(
+        DriftSqlType.string,
+        db.typeMapping,
+      ),
       'tabIntentOpenSetting': settings['tabIntentOpenSetting']?.readAs(
         DriftSqlType.string,
         db.typeMapping,

apps/weblibre/lib/features/user/domain/repositories/general_settings.g.dart

@@ -35,7 +35,7 @@ final class GeneralSettingsRepositoryProvider
 }
 
 String _$generalSettingsRepositoryHash() =>
-    r'f75d5cb1963c16404f5fd02db0097b72451717eb';
+    r'5fe717f8bccad163fa0cb8ec3294c4b00847e141';
 
 abstract class _$GeneralSettingsRepository
     extends $StreamNotifier<GeneralSettings> {

apps/weblibre/test/drift/tabs/generated/schema.dart

@@ -10,6 +10,7 @@ import 'schema_v4.dart' as v4;
 import 'schema_v5.dart' as v5;
 import 'schema_v6.dart' as v6;
 import 'schema_v7.dart' as v7;
+import 'schema_v8.dart' as v8;
 
 class GeneratedHelper implements SchemaInstantiationHelper {
   @override
@@ -27,10 +28,12 @@ class GeneratedHelper implements SchemaInstantiationHelper {
         return v6.DatabaseAtV6(db);
       case 7:
         return v7.DatabaseAtV7(db);
+      case 8:
+        return v8.DatabaseAtV8(db);
       default:
         throw MissingSchemaException(version, versions);
     }
   }
 
-  static const versions = const [2, 3, 4, 5, 6, 7];
+  static const versions = const [2, 3, 4, 5, 6, 7, 8];
 }