Add database maintenance tooling

- Implement maintenance hooks (useMaintenanceTables, useVacuumTable, useAnalyzeTable, useReindexTable)
- Add DatabaseMaintenance page and UI for vacuum/analyze/reindex
- Wire new route / admin/database-maintenance and sidebar entry
- Remove DatabaseMaintenance icon usage on page and align with AdminLayout props

src/hooks/admin/useDatabaseMaintenance.ts

@@ -0,0 +1,135 @@
+import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
+import { supabase } from '@/integrations/supabase/client';
+import { queryKeys } from '@/lib/queryKeys';
+import { toast } from 'sonner';
+
+export interface MaintenanceTable {
+  table_name: string;
+  row_count: number;
+  table_size: string;
+  indexes_size: string;
+  total_size: string;
+}
+
+export interface MaintenanceResult {
+  table_name: string;
+  operation: string;
+  started_at: string;
+  completed_at: string;
+  duration_ms: number;
+  success: boolean;
+  error?: string;
+}
+
+export function useMaintenanceTables() {
+  return useQuery({
+    queryKey: queryKeys.admin.maintenanceTables(),
+    queryFn: async () => {
+      const { data, error } = await supabase.rpc('get_maintenance_tables');
+
+      if (error) throw error;
+
+      return data as unknown as MaintenanceTable[];
+    },
+    staleTime: 2 * 60 * 1000, // 2 minutes
+  });
+}
+
+export function useVacuumTable() {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: async (tableName: string) => {
+      const { data, error } = await supabase.rpc('run_vacuum_table', {
+        table_name: tableName,
+      });
+
+      if (error) throw error;
+
+      return data as unknown as MaintenanceResult;
+    },
+    onSuccess: (result) => {
+      if (result.success) {
+        toast.success(`Vacuum completed on ${result.table_name}`, {
+          description: `Duration: ${Math.round(result.duration_ms)}ms`,
+        });
+      } else {
+        toast.error(`Vacuum failed on ${result.table_name}`, {
+          description: result.error,
+        });
+      }
+      queryClient.invalidateQueries({ queryKey: queryKeys.admin.maintenanceTables() });
+    },
+    onError: (error: Error) => {
+      toast.error('Vacuum operation failed', {
+        description: error.message,
+      });
+    },
+  });
+}
+
+export function useAnalyzeTable() {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: async (tableName: string) => {
+      const { data, error } = await supabase.rpc('run_analyze_table', {
+        table_name: tableName,
+      });
+
+      if (error) throw error;
+
+      return data as unknown as MaintenanceResult;
+    },
+    onSuccess: (result) => {
+      if (result.success) {
+        toast.success(`Analyze completed on ${result.table_name}`, {
+          description: `Duration: ${Math.round(result.duration_ms)}ms`,
+        });
+      } else {
+        toast.error(`Analyze failed on ${result.table_name}`, {
+          description: result.error,
+        });
+      }
+      queryClient.invalidateQueries({ queryKey: queryKeys.admin.maintenanceTables() });
+    },
+    onError: (error: Error) => {
+      toast.error('Analyze operation failed', {
+        description: error.message,
+      });
+    },
+  });
+}
+
+export function useReindexTable() {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: async (tableName: string) => {
+      const { data, error } = await supabase.rpc('run_reindex_table', {
+        table_name: tableName,
+      });
+
+      if (error) throw error;
+
+      return data as unknown as MaintenanceResult;
+    },
+    onSuccess: (result) => {
+      if (result.success) {
+        toast.success(`Reindex completed on ${result.table_name}`, {
+          description: `Duration: ${Math.round(result.duration_ms)}ms`,
+        });
+      } else {
+        toast.error(`Reindex failed on ${result.table_name}`, {
+          description: result.error,
+        });
+      }
+      queryClient.invalidateQueries({ queryKey: queryKeys.admin.maintenanceTables() });
+    },
+    onError: (error: Error) => {
+      toast.error('Reindex operation failed', {
+        description: error.message,
+      });
+    },
+  });
+}