feat(investment): add portfolio allocation targets and interest receivable/post/receive lifecycle

Adds a Portfolio Allocation (Target vs Actual %) section to the Investment
Dashboard, and reworks Investment Interest into the full accrual lifecycle:
Interest Receivable, FD/Govt./Bond Interest Calculation & Post, and Interest
Receive, plus the existing registers.

Interest Calculation & Post now tracks cumulative posted/received amounts
per holding instead of recomputing full accrued interest on every click
(which previously double-counted on repeat posting). Holdings classified
Non-Performing (Sub-Standard/Doubtful/Loss) are excluded from accrual
posting per RBI norms — their interest accrues in memo/suspense only and is
recognised solely on actual cash receipt via Interest Receive.

Also bumps the production initial-bundle budget in angular.json (13/14mb ->
15/17mb) since the growing set of eagerly-loaded feature modules (Investment,
NPA, Reconciliation, GL Reports, OSS Returns) pushed the build past the old
limit.

src/app/investment/investment-shared.scss

@@ -128,6 +128,32 @@
     color: #b91c1c;
     border: 1px solid #fecaca;
   }
+
+  // Investment-provisioning classification (Non-Performing Investment) — same severity ramp as
+  // the NPA module's stage badges, kept local since it colours a different status field here.
+  &--standard {
+    background: #f0fdf4;
+    color: #15803d;
+    border: 1px solid #bbf7d0;
+  }
+
+  &--sub_standard {
+    background: #fef2f2;
+    color: #dc2626;
+    border: 1px solid #fecaca;
+  }
+
+  &--doubtful {
+    background: #fdf2f8;
+    color: #9d174d;
+    border: 1px solid #fbcfe8;
+  }
+
+  &--loss {
+    background: #1f2937;
+    color: #f9fafb;
+    border: 1px solid #1f2937;
+  }
 }
 
 .inv-form-grid {