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.controller.ts

@@ -58,6 +58,14 @@ export class AccountsController {
     return this.accountsService.adjustBalance(id, dto);
   }
 
+  @Post('transfer')
+  @ApiOperation({ summary: 'Transfer funds between asset accounts' })
+  transferFunds(
+    @Body() dto: { fromAccountId: string; toAccountId: string; amount: number; transferDate: string; memo?: string },
+  ) {
+    return this.accountsService.transferFunds(dto);
+  }
+
   @Get(':id')
   @ApiOperation({ summary: 'Get account by ID' })
   findOne(@Param('id') id: string) {