feat(database-view): add row creation

The client only supported editing existing rows (use-update-row =
PATCH only); a freshly created table had no rows and no way to add
one. Add useCreateRow (POST /api/v1/tables/:tableId/rows, bridge
already supports it) and an 'Ajouter une ligne' button in the grid
renderer, gated by canWriteRows, with view-cache invalidation.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/client/src/features/acadenice/database-view/hooks/use-create-row.ts

@@ -0,0 +1,43 @@
+import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { getBridgeClient, resolveBridgeUrl } from "../services/bridge-client";
+import type { BridgeRow } from "../types/database-view.types";
+import { VIEW_DATA_QUERY_KEY } from "./use-view-data";
+
+interface UseCreateRowOptions {
+  tableId: string;
+  viewId: string;
+  bridgeUrl?: string | null;
+}
+
+/**
+ * Create a new row in the table via the bridge, then invalidate the view
+ * cache so the row appears.
+ *
+ * Server-first (no optimistic insert): the bridge assigns the row id, and the
+ * inline editor PATCHes by id afterwards — fabricating a temporary id here
+ * would desync the first edit. An empty payload creates a blank row (Baserow
+ * fills defaults); callers may pass initial field values.
+ */
+export function useCreateRow({ tableId, viewId, bridgeUrl }: UseCreateRowOptions) {
+  const queryClient = useQueryClient();
+  const url = resolveBridgeUrl(bridgeUrl);
+
+  return useMutation<BridgeRow, Error, Record<string, unknown> | void>({
+    mutationFn: async (fields) => {
+      const client = getBridgeClient(url);
+      return (await (client.post(
+        `/api/v1/tables/${tableId}/rows`,
+        fields ?? {},
+      ) as unknown)) as BridgeRow;
+    },
+
+    onSettled: () => {
+      // Reconcile with the server. The bridge also emits an SSE row.created
+      // event which triggers the same invalidation — idempotent.
+      queryClient.invalidateQueries({
+        queryKey: [VIEW_DATA_QUERY_KEY, viewId],
+        exact: false,
+      });
+    },
+  });
+}

apps/client/src/features/acadenice/database-view/renderers/table-renderer.tsx

@@ -23,6 +23,7 @@ import { modals } from "@mantine/modals";
 import { useQueryClient } from "@tanstack/react-query";
 import { useViewData } from "../hooks/use-view-data";
 import { useUpdateRow } from "../hooks/use-update-row";
+import { useCreateRow } from "../hooks/use-create-row";
 import { useDatabaseRealtimeUpdates } from "../hooks/use-database-realtime-updates";
 import { usePermissions } from "../hooks/use-permissions";
 import { useAcadenicePermissions } from "@/features/acadenice/rbac/hooks/use-acadenice-permissions";
@@ -186,6 +187,7 @@ export function TableRenderer({ tableId, viewId, bridgeUrl }: TableRendererProps
   const canAdminTables = acadenicePerms.hasPermission("tables:write");
   const queryClient = useQueryClient();
   const updateRow = useUpdateRow({ tableId, viewId, bridgeUrl });
+  const createRow = useCreateRow({ tableId, viewId, bridgeUrl });
 
   // Field admin modal state.
   const [fieldModalOpen, setFieldModalOpen] = useState(false);
@@ -352,6 +354,19 @@ export function TableRenderer({ tableId, viewId, bridgeUrl }: TableRendererProps
         </table>
       </div>
 
+      {canWriteRows && (
+        <Button
+          size="xs"
+          variant="subtle"
+          leftSection={<IconPlus size={14} />}
+          onClick={() => createRow.mutate()}
+          loading={createRow.isPending}
+          mt="xs"
+        >
+          {t("database_view.table.add_row", "Ajouter une ligne")}
+        </Button>
+      )}
+
       {/* Pagination — only shown when there is more than one page. */}
       {(page > 1 || hasNextPage) && (
         <div className={styles.pagination}>