Fix budget page UI: annual totals, summary cards, sticky headers, column layout

- Compute annual_total on data load via hydrateBudgetLine() (was only computed on edit)
- Ensure monthly values are cast to numbers from PostgreSQL response
- Fix summary cards to use pre-computed annual_total instead of re-summing months
- Make Income/Expense section headers sticky so labels stay visible on horizontal scroll
- Split account number and name into separate columns for better readability
- Add section total in annual column for each income/expense group
- Add subtle border between frozen columns and scrollable month data

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/pages/budgets/BudgetsPage.tsx

@@ -40,6 +40,19 @@ function parseCurrencyValue(val: string): number {
   return isNegative ? -num : num;
 }
 
+/**
+ * Ensure all monthly values are numbers (PostgreSQL can return strings for NUMERIC columns)
+ * and compute annual_total as the sum of all monthly values.
+ */
+function hydrateBudgetLine(row: any): BudgetLine {
+  const line: any = { ...row };
+  for (const m of months) {
+    line[m] = Number(line[m]) || 0;
+  }
+  line.annual_total = months.reduce((sum, m) => sum + (line[m] || 0), 0);
+  return line as BudgetLine;
+}
+
 function parseCSV(text: string): Record<string, string>[] {
   const lines = text.trim().split('\n');
   if (lines.length < 2) return [];
@@ -88,8 +101,10 @@ export function BudgetsPage() {
     queryKey: ['budgets', year],
     queryFn: async () => {
       const { data } = await api.get(`/budgets/${year}`);
-      setBudgetData(data);
+      // Hydrate each line: ensure numbers and compute annual_total
-      return data;
+      const hydrated = (data as any[]).map(hydrateBudgetLine);
+      setBudgetData(hydrated);
+      return hydrated;
     },
   });
 
@@ -222,8 +237,8 @@ export function BudgetsPage() {
 
   const incomeLines = budgetData.filter((b) => b.account_type === 'income');
   const expenseLines = budgetData.filter((b) => b.account_type === 'expense');
-  const totalIncome = months.reduce((s, m) => s + incomeLines.reduce((a, b) => a + ((b as any)[m] || 0), 0), 0);
+  const totalIncome = incomeLines.reduce((sum, line) => sum + (line.annual_total || 0), 0);
-  const totalExpense = months.reduce((s, m) => s + expenseLines.reduce((a, b) => a + ((b as any)[m] || 0), 0), 0);
+  const totalExpense = expenseLines.reduce((sum, line) => sum + (line.annual_total || 0), 0);
 
   return (
     <Stack>
@@ -285,20 +300,21 @@ export function BudgetsPage() {
       </Group>
 
       <div style={{ overflowX: 'auto' }}>
-        <Table striped highlightOnHover style={{ minWidth: 1400 }}>
+        <Table striped highlightOnHover style={{ minWidth: 1600 }}>
           <Table.Thead>
             <Table.Tr>
-              <Table.Th style={{ position: 'sticky', left: 0, background: 'white', zIndex: 1, minWidth: 280 }}>Account</Table.Th>
+              <Table.Th style={{ position: 'sticky', left: 0, background: 'white', zIndex: 2, minWidth: 120 }}>Acct #</Table.Th>
+              <Table.Th style={{ position: 'sticky', left: 120, background: 'white', zIndex: 2, minWidth: 220 }}>Account Name</Table.Th>
               {monthLabels.map((m) => (
                 <Table.Th key={m} ta="right" style={{ minWidth: 90 }}>{m}</Table.Th>
               ))}
-              <Table.Th ta="right" style={{ minWidth: 100 }}>Annual</Table.Th>
+              <Table.Th ta="right" style={{ minWidth: 110 }}>Annual</Table.Th>
             </Table.Tr>
           </Table.Thead>
           <Table.Tbody>
             {budgetData.length === 0 && (
               <Table.Tr>
-                <Table.Td colSpan={14}>
+                <Table.Td colSpan={15}>
                   <Text ta="center" c="dimmed" py="lg">No budget data. Import a CSV or add income/expense accounts to get started.</Text>
                 </Table.Td>
               </Table.Tr>
@@ -306,18 +322,56 @@ export function BudgetsPage() {
             {['income', 'expense'].map((type) => {
               const lines = budgetData.filter((b) => b.account_type === type);
               if (lines.length === 0) return null;
+
+              const sectionBg = type === 'income' ? '#e6f9e6' : '#fde8e8';
+              const sectionTotal = lines.reduce((sum, line) => sum + (line.annual_total || 0), 0);
+
               return [
-                <Table.Tr key={`header-${type}`} style={{ background: type === 'income' ? '#e6f9e6' : '#fde8e8' }}>
+                <Table.Tr key={`header-${type}`} style={{ background: sectionBg }}>
-                  <Table.Td colSpan={14} fw={700} tt="capitalize">{type}</Table.Td>
+                  <Table.Td
+                    colSpan={2}
+                    fw={700}
+                    tt="capitalize"
+                    style={{
+                      position: 'sticky',
+                      left: 0,
+                      background: sectionBg,
+                      zIndex: 2,
+                    }}
+                  >
+                    {type}
+                  </Table.Td>
+                  {monthLabels.map((m) => (
+                    <Table.Td key={m} />
+                  ))}
+                  <Table.Td ta="right" fw={700} ff="monospace">{fmt(sectionTotal)}</Table.Td>
                 </Table.Tr>,
                 ...lines.map((line) => {
                   const idx = budgetData.indexOf(line);
                   return (
                     <Table.Tr key={line.account_id}>
-                      <Table.Td style={{ position: 'sticky', left: 0, background: 'white', zIndex: 1 }}>
+                      <Table.Td
-                        <Group gap="xs">
+                        style={{
-                          <Text size="sm" c="dimmed">{line.account_number}</Text>
+                          position: 'sticky',
-                          <Text size="sm">{line.account_name}</Text>
+                          left: 0,
+                          background: 'white',
+                          zIndex: 1,
+                          borderRight: '1px solid #e9ecef',
+                        }}
+                      >
+                        <Text size="sm" c="dimmed" ff="monospace">{line.account_number}</Text>
+                      </Table.Td>
+                      <Table.Td
+                        style={{
+                          position: 'sticky',
+                          left: 120,
+                          background: 'white',
+                          zIndex: 1,
+                          borderRight: '1px solid #e9ecef',
+                        }}
+                      >
+                        <Group gap={6} wrap="nowrap">
+                          <Text size="sm" style={{ whiteSpace: 'nowrap' }}>{line.account_name}</Text>
                           {line.fund_type === 'reserve' && <Badge size="xs" color="violet">R</Badge>}
                         </Group>
                       </Table.Td>