feat(investment): add Treasury Investment module (FD, Govt Sec/Non-SLR/Bond/MF, Share)

Adds full frontend-only Investment module mirroring the legacy AutoBank CBS
Investment menu: Dashboard, FD/Bond/Share entry screens (purchase, interest,
sell/redeem, write-off, amortize and more), 10 master screens, an Interest
calculation/register screen, and ~21 reports. All figures are derived from a
single holdings/transactions dataset so entry, interest, and reports can
never drift out of sync. Wires the new "Investment" mega-menu into the shell
and routes the previously inert Investment stub buttons.

src/app/core/shell/shell.component.html

@@ -362,6 +362,10 @@
           <fa-icon icon="university" class="ni-ico"></fa-icon>RBI
           <fa-icon [icon]="rbiMenuOpen ? 'caret-up' : 'caret-down'" class="ni-caret"></fa-icon>
         </a>
+        <a class="ni" tabindex="0" (click)="investmentMenuOpen = !investmentMenuOpen; rbiMenuOpen = false; glMenuOpen = false" *mifosxHasPermission="'MENU_RBI'">
+          <fa-icon icon="chart-line" class="ni-ico"></fa-icon>Investment
+          <fa-icon [icon]="investmentMenuOpen ? 'caret-up' : 'caret-down'" class="ni-caret"></fa-icon>
+        </a>
         <a class="ni" tabindex="0" [matMenuTriggerFor]="digitalMenu" *mifosxHasPermission="'MENU_DIGITAL'">
           <fa-icon icon="mobile-alt" class="ni-ico"></fa-icon>Digital
           <fa-icon icon="caret-down" class="ni-caret"></fa-icon>
@@ -492,6 +496,15 @@
             <fa-icon icon="university" class="ni-ico"></fa-icon>RBI
             <fa-icon [icon]="rbiMenuOpen ? 'caret-up' : 'caret-down'" class="ni-caret"></fa-icon>
           </a>
+          <a
+            class="ni"
+            tabindex="0"
+            (click)="investmentMenuOpen = !investmentMenuOpen; rbiMenuOpen = false; glMenuOpen = false"
+            *mifosxHasPermission="'MENU_RBI'"
+          >
+            <fa-icon icon="chart-line" class="ni-ico"></fa-icon>Investment
+            <fa-icon [icon]="investmentMenuOpen ? 'caret-up' : 'caret-down'" class="ni-caret"></fa-icon>
+          </a>
           <a class="ni" tabindex="0" [matMenuTriggerFor]="reportsMenu" *mifosxHasPermission="'MENU_REPORTS'">
             <fa-icon icon="chart-bar" class="ni-ico"></fa-icon>Reports
             <fa-icon icon="caret-down" class="ni-caret"></fa-icon>
@@ -1166,7 +1179,7 @@
             <fa-icon icon="user-slash" class="menu-item-icon" style="color: #c2410c"></fa-icon> Non-Customer Entry
           </button>
           <button mat-menu-item tabindex="0"><fa-icon icon="lock" class="menu-item-icon"></fa-icon> Locker</button>
-          <button mat-menu-item tabindex="0">
+          <button mat-menu-item routerLink="/investment/bonds" tabindex="0">
             <fa-icon icon="chart-line" class="menu-item-icon"></fa-icon> SLR and Non SLR Investment Report
           </button>
           <button mat-menu-item tabindex="0" (click)="openCicReportingDialog()">
@@ -1182,13 +1195,13 @@
         <!-- Investment -->
         <div class="deposit-menu-group">
           <div class="deposit-group-title">Investment</div>
-          <button mat-menu-item tabindex="0">
+          <button mat-menu-item routerLink="/investment/dashboard" tabindex="0">
             <fa-icon icon="calendar-alt" class="menu-item-icon"></fa-icon> Due Date Diary for All Investment
           </button>
-          <button mat-menu-item tabindex="0">
+          <button mat-menu-item routerLink="/investment/reports" tabindex="0">
             <fa-icon icon="dollar-sign" class="menu-item-icon"></fa-icon> Total Int Received &amp; Receivable Report
           </button>
-          <button mat-menu-item tabindex="0">
+          <button mat-menu-item routerLink="/investment/reports" tabindex="0">
             <fa-icon icon="piggy-bank" class="menu-item-icon"></fa-icon> Bucket Wise Investment
           </button>
           <button mat-menu-item routerLink="/deaf" tabindex="0">
@@ -1866,6 +1879,161 @@
       </div>
     }
 
+    <!-- Investment (Treasury) Mega Menu -->
+    @if (investmentMenuOpen) {
+      <div class="gl-backdrop" (click)="investmentMenuOpen = false"></div>
+      <div class="gl-mega-menu rbi-mega-menu">
+        <div class="gl-mega-menu-header">
+          <fa-icon icon="chart-line" class="gl-mega-menu-header-icon"></fa-icon>
+          <span>Investment</span>
+        </div>
+        <input
+          type="text"
+          class="gl-search"
+          placeholder="Search Investment..."
+          (input)="investmentSearch = $any($event.target).value"
+        />
+        <div class="rbi-columns">
+          <!-- Dashboard -->
+          <div class="gl-group">
+            <div class="gl-group-title">Dashboard</div>
+            <a
+              class="gl-link"
+              [class.hidden]="!matchesInvestmentSearch('Investment Dashboard')"
+              routerLink="/investment/dashboard"
+              (click)="investmentMenuOpen = false"
+            >
+              <fa-icon icon="chart-pie" class="gl-icon"></fa-icon> Portfolio Dashboard
+            </a>
+            <a
+              class="gl-link"
+              [class.hidden]="!matchesInvestmentSearch('Due Date Diary for All Investment')"
+              routerLink="/investment/dashboard"
+              (click)="investmentMenuOpen = false"
+            >
+              <fa-icon icon="calendar-check" class="gl-icon"></fa-icon> Due Date Diary for All Investment
+            </a>
+            <a
+              class="gl-link"
+              [class.hidden]="!matchesInvestmentSearch('Bucket Wise Investment')"
+              routerLink="/investment/reports"
+              (click)="investmentMenuOpen = false"
+            >
+              <fa-icon icon="layer-group" class="gl-icon"></fa-icon> Bucket Wise Investment
+            </a>
+          </div>
+          <!-- Entry -->
+          <div class="gl-group">
+            <div class="gl-group-title">Entry</div>
+            <a
+              class="gl-link"
+              [class.hidden]="!matchesInvestmentSearch('FD Investment')"
+              routerLink="/investment/fd"
+              (click)="investmentMenuOpen = false"
+            >
+              <fa-icon icon="piggy-bank" class="gl-icon"></fa-icon> FD Investment
+            </a>
+            <a
+              class="gl-link"
+              [class.hidden]="!matchesInvestmentSearch('Govt Security / Non-SLR / Bond / Mutual Fund')"
+              routerLink="/investment/bonds"
+              (click)="investmentMenuOpen = false"
+            >
+              <fa-icon icon="university" class="gl-icon"></fa-icon> Govt Security / Non-SLR / Bond / Mutual Fund
+            </a>
+            <a
+              class="gl-link"
+              [class.hidden]="!matchesInvestmentSearch('SLR and Non SLR Investment Report')"
+              routerLink="/investment/bonds"
+              (click)="investmentMenuOpen = false"
+            >
+              <fa-icon icon="balance-scale" class="gl-icon"></fa-icon> SLR and Non SLR Investment Report
+            </a>
+            <a
+              class="gl-link"
+              [class.hidden]="!matchesInvestmentSearch('Share Entry')"
+              routerLink="/investment/share"
+              (click)="investmentMenuOpen = false"
+            >
+              <fa-icon icon="chart-line" class="gl-icon"></fa-icon> Share Entry
+            </a>
+          </div>
+          <!-- Masters -->
+          <div class="gl-group">
+            <div class="gl-group-title">Masters</div>
+            <a
+              class="gl-link"
+              [class.hidden]="
+                !matchesInvestmentSearch(
+                  'Bank Party Script Broker SubType Control Parameter Daily Script LIEN Reason Mutual Fund Product SGL Bank Script Market Detail Masters'
+                )
+              "
+              routerLink="/investment/masters"
+              (click)="investmentMenuOpen = false"
+            >
+              <fa-icon icon="cogs" class="gl-icon"></fa-icon> Bank/Party, Script, Broker &amp; Other Masters
+            </a>
+          </div>
+          <!-- Interest -->
+          <div class="gl-group">
+            <div class="gl-group-title">Interest</div>
+            <a
+              class="gl-link"
+              [class.hidden]="!matchesInvestmentSearch('FD Interest Calculation')"
+              routerLink="/investment/interest"
+              (click)="investmentMenuOpen = false"
+            >
+              <fa-icon icon="calculator" class="gl-icon"></fa-icon> FD Interest Calculation
+            </a>
+            <a
+              class="gl-link"
+              [class.hidden]="!matchesInvestmentSearch('Govt Bond Interest Calculation')"
+              routerLink="/investment/interest"
+              (click)="investmentMenuOpen = false"
+            >
+              <fa-icon icon="calculator" class="gl-icon"></fa-icon> Govt./Bond Int. Calculation
+            </a>
+            <a
+              class="gl-link"
+              [class.hidden]="!matchesInvestmentSearch('Government Bond Int Register FD Interest Register FD Register')"
+              routerLink="/investment/interest"
+              (click)="investmentMenuOpen = false"
+            >
+              <fa-icon icon="list-alt" class="gl-icon"></fa-icon> Bond Int / FD Int / FD Registers
+            </a>
+          </div>
+          <!-- Reports -->
+          <div class="gl-group">
+            <div class="gl-group-title">Reports</div>
+            <a
+              class="gl-link"
+              [class.hidden]="!matchesInvestmentSearch('Balance Ledger Maturity Investment Reports')"
+              routerLink="/investment/reports"
+              (click)="investmentMenuOpen = false"
+            >
+              <fa-icon icon="file-invoice" class="gl-icon"></fa-icon> Balance / Ledger / Maturity Reports
+            </a>
+            <a
+              class="gl-link"
+              [class.hidden]="!matchesInvestmentSearch('Total Int Received & Receivable Report')"
+              routerLink="/investment/reports"
+              (click)="investmentMenuOpen = false"
+            >
+              <fa-icon icon="hand-holding-usd" class="gl-icon"></fa-icon> Total Int Received &amp; Receivable Report
+            </a>
+            <a
+              class="gl-link"
+              [class.hidden]="!matchesInvestmentSearch('Investment Portfolio')"
+              routerLink="/investment/reports"
+              (click)="investmentMenuOpen = false"
+            >
+              <fa-icon icon="briefcase" class="gl-icon"></fa-icon> Investment Portfolio
+            </a>
+          </div>
+        </div>
+      </div>
+    }
+
     <!-- Progress Bar -->
     @if (progressBarMode !== 'none') {
       <div>

src/app/core/shell/shell.component.ts

@@ -98,6 +98,10 @@ export class ShellComponent implements OnInit, OnDestroy {
   rbiMenuOpen = false;
   rbiSearch = '';
 
+  /** Investment (Treasury) mega menu state */
+  investmentMenuOpen = false;
+  investmentSearch = '';
+
   /* Live KPI ticker — markup is static inside the template; the marquee
      animation, LIVE badge, and pause-on-hover handle the live feel. */
 
@@ -116,6 +120,11 @@ export class ShellComponent implements OnInit, OnDestroy {
     return label.toLowerCase().includes(this.rbiSearch.toLowerCase());
   }
 
+  matchesInvestmentSearch(label: string): boolean {
+    if (!this.investmentSearch) return true;
+    return label.toLowerCase().includes(this.investmentSearch.toLowerCase());
+  }
+
   /** Route for a facility entry in the Account Facilities hover dropdown — only "Cheque Book" has a
    *  dedicated action page today; every other facility falls back to the existing overview page. */
   facilityRoute(label: string): string[] {
@@ -312,7 +321,10 @@ export class ShellComponent implements OnInit, OnDestroy {
       height: '100vh',
       maxWidth: '100vw',
       maxHeight: '100vh',
-      panelClass: ['crr-slr-dialog-panel', 'fdrd-fullscreen-panel'],
+      panelClass: [
+        'crr-slr-dialog-panel',
+        'fdrd-fullscreen-panel'
+      ],
       autoFocus: false,
       disableClose: false,
       hasBackdrop: true,