feat: complete UI redesign — client creation tabs, footer, home page, CIF & occupation fields

- Client creation: replaced vertical stepper with 3-tab layout (General, KYC & Nominee, Preview)
- All form fields redesigned with appearance="outline" and section grouping
- Preview tab with profile card, info tables, KYC details, family members
- Footer redesigned: security bar, LincShield certifications, regulatory & legal, quick navigation, support & contact, LincPay branding
- Home page redesigned: welcome banner, quick action cards, info row
- Client view header redesigned: ID chips row (Account No, CIF Number, External Id), 4-column details grid
- Added CIF Number column to clients list table
- Added CIF Number display to client view sidebar and personal data tab
- Added occupationCategoryId and occupationId dropdowns to client creation form
- Added occupation fields to client view sidebar, personal data tab, and preview
- Added 51+ missing translation keys to en-US.json
- Toolbar: added Last login chip
- Registered faUserPlus icon

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/app/login/two-factor-authentication/two-factor-authentication.component.scss

@@ -18,7 +18,7 @@
 p {
   text-align: center;
   font-size: 1.1rem;
-  color: var(--md-sys-color-on-surface, #1a1c1e);
+  color: rgb(255 255 255 / 90%);
   margin: 0 0 1rem;
 
   strong {
@@ -36,7 +36,7 @@ mat-divider {
 p:not(:first-of-type) {
   text-align: center;
   font-size: 0.95rem;
-  color: var(--md-sys-color-on-surface-variant, #44474e);
+  color: rgb(255 255 255 / 65%);
   margin-bottom: 1rem;
 }