feat: investment chart alignment, auto-renew records, fund transfers, capital planning report, and upcoming activities (v2026.3.24)

- Lock InvestmentTimeline and ProjectionChart to shared X axis range
- Auto-create renewal scenario_investments records when auto_renew is true
- Add fund transfer mechanism between asset accounts with journal entries
- Add Capital Planning Report (5-year forecast grouped by category)
- Add Upcoming Investment Activities dashboard card (maturities + planned purchases)
- Bump version to 2026.3.24

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

backend/src/modules/accounts/accounts.service.ts

@@ -360,6 +360,62 @@ export class AccountsService {
     return journalEntry;
   }
 
+  async transferFunds(dto: {
+    fromAccountId: string;
+    toAccountId: string;
+    amount: number;
+    transferDate: string;
+    memo?: string;
+  }) {
+    if (dto.amount <= 0) throw new BadRequestException('Transfer amount must be positive');
+    if (dto.fromAccountId === dto.toAccountId) throw new BadRequestException('Cannot transfer to the same account');
+
+    const fromAccount = await this.findOne(dto.fromAccountId);
+    const toAccount = await this.findOne(dto.toAccountId);
+
+    if (fromAccount.account_type !== 'asset') throw new BadRequestException('Source account must be an asset account');
+    if (toAccount.account_type !== 'asset') throw new BadRequestException('Destination account must be an asset account');
+
+    // Find fiscal period
+    const asOf = new Date(dto.transferDate);
+    const year = asOf.getFullYear();
+    const month = asOf.getMonth() + 1;
+    const periods = await this.tenant.query(
+      'SELECT id FROM fiscal_periods WHERE year = $1 AND month = $2',
+      [year, month],
+    );
+    if (!periods.length) {
+      throw new BadRequestException(`No fiscal period found for ${year}-${String(month).padStart(2, '0')}`);
+    }
+
+    const memo = dto.memo || `Transfer from ${fromAccount.name} to ${toAccount.name}`;
+
+    // Create journal entry: debit destination (increase), credit source (decrease)
+    const jeRows = await this.tenant.query(
+      `INSERT INTO journal_entries (entry_date, description, entry_type, fiscal_period_id, is_posted, posted_at, created_by)
+       VALUES ($1, $2, 'transfer', $3, true, NOW(), $4)
+       RETURNING *`,
+      [dto.transferDate, memo, periods[0].id, '00000000-0000-0000-0000-000000000000'],
+    );
+    const je = jeRows[0];
+
+    // Credit source account (reduces asset balance)
+    await this.tenant.query(
+      `INSERT INTO journal_entry_lines (journal_entry_id, account_id, debit, credit, memo)
+       VALUES ($1, $2, 0, $3, $4)`,
+      [je.id, dto.fromAccountId, dto.amount, memo],
+    );
+
+    // Debit destination account (increases asset balance)
+    await this.tenant.query(
+      `INSERT INTO journal_entry_lines (journal_entry_id, account_id, debit, credit, memo)
+       VALUES ($1, $2, $3, 0, $4)`,
+      [je.id, dto.toAccountId, dto.amount, memo],
+    );
+
+    return je;
+  }
+
   async getTrialBalance(asOfDate?: string) {
     const dateFilter = asOfDate
       ? `AND je.entry_date <= $1`