v0.7.8: MySQL/SQLite backup-sync, Excel export, query cancel, settings import/export, Windows title-bar fix, SQLite table editor (#16)

* [P1-T1] feat(backup): MySQL/SQLite backup models + db_type on SyncOptions (Task 1.1)

* [P1-T2] feat: enable tools(mysql,sqlite) + tableManagement(sqlite) + add fflate (Task 1.2)

* [P1-T3] feat(cancel): CancelHandle enum + CancelRegistry (Task 1.3)

* [P2-T1] feat(export): hand-rolled XLSX writer with inline-string cells (Task 2.1)

* [P2-T2] feat(backup): SQLite .dump/restore/sync core, fail-closed virtual tables (Task 2.2)

* [P2-T3] feat(backup): MySQL dump/restore/sync arg builders + tool resolution (Task 2.3)

* [P2-T4] feat(settings): pure import validator + SettingsExport envelope + Store.apply_settings (Task 2.4)

* [P2-T5] feat(table-editor): SQLite create/diff/rebuild SQL generation, fail-closed AUTOINCREMENT (Task 2.5)

* [P3-T1] feat(commands): MySQL/SQLite backup + settings export/import commands + wrappers (Task 3.1)

* [P3-T2] feat(cancel): capture cancel primitives at connect; cancel_query command; SQLite interrupt test (Task 3.2)

* [P3-T3] feat(table-editor): SQLite object-change dispatch + execute_change Ddl/RebuildTable (Task 3.3)

* [P4-T1] feat(tools): DB-aware backup/restore/sync pages (Task 4.1)

* [P4-T2] feat(export): xlsx export in grid toolbar + overflow menu (Task 4.2)

* [P4-T3] feat(query): cancel button wired to cancelQuery (Task 4.3)

* [P4-T4] feat(settings): export/import buttons + validation gate (Task 4.4)

* [P4-T5] fix(ui): gate macOS overlay drag strip to macOS only (Task 4.5)

* [P4-T6] feat(table-editor): SQLite Create/Edit Table mode (Task 4.6)

* [P5-T1] chore: bump 0.7.7 -> 0.7.8 + README/AGENTS/ROADMAP status (Task 5.1)

* [P5-T2] build(release): bundle mariadb-dump + mariadb client (system-first fallback) (Task 5.2)

* fix(cancel): propagate cancellations past wrapped->raw fallback (SQLite/PG/MySQL) + MySQL CONNECTION_ID cast

* fix(export): Excel export from overflow menu did nothing + add export success/error toasts

* fix(export): tree kebab export fetches table data when rows not loaded

* docs(readme): surface v0.7.8 features (MySQL/SQLite backup-sync, Excel export, query cancel, SQLite table editor, settings import/export)

src/components/db-viewer/TableControls.test.tsx

@@ -4,6 +4,8 @@ import type { ComponentProps } from "react";
 import { TableControls, formatDuration } from "./TableControls";
 import { TooltipProvider } from "../ui/Tooltip";
 import { useDbViewerStore } from "../../stores/dbViewerStore";
+import { useNotificationStore } from "../../stores/notificationStore";
+import * as exportData from "../../lib/exportData";
 import type { ViewerTab } from "../../stores/dbViewerStore";
 
 const columns = [
@@ -331,4 +333,28 @@ describe("TableControls", () => {
       screen.getByText("Drop columns here to add filters"),
     ).toBeInTheDocument();
   });
+
+  it("export dropdown includes the Excel option", () => {
+    seed([makeTab()], "tab-1");
+    renderControls();
+    fireEvent.click(screen.getByLabelText(/export/i));
+    expect(screen.getByText("JSON")).toBeInTheDocument();
+    expect(screen.getByText("CSV")).toBeInTheDocument();
+    expect(screen.getByText("SQL")).toBeInTheDocument();
+    expect(screen.getByText("Markdown")).toBeInTheDocument();
+    expect(screen.getByText("Excel")).toBeInTheDocument();
+  });
+
+  it("notifies after a successful export", () => {
+    seed([makeTab()], "tab-1");
+    useNotificationStore.getState().notifications.length = 0;
+    vi.spyOn(exportData, "exportData").mockImplementation(() => {});
+    renderControls();
+    fireEvent.click(screen.getByLabelText(/export/i));
+    fireEvent.click(screen.getByText("Excel"));
+    const st = useNotificationStore.getState();
+    expect(
+      st.notifications.some((n) => n.message.toLowerCase().includes("exported")),
+    ).toBe(true);
+  });
 });