fix(finance): i18n — remove nav.settings scalar conflicting with [nav.settings] table

Same TOML duplicate-key pattern as nav.analysis: the scalar
settings = "..." in [nav] blocked parsing of the [nav.settings]
sub-table. Removed the scalar; nav dropdown labels now reference
the existing nav.drawer.*_label keys which hold the same strings.

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

apps/finance/services/api/main/locales/en.toml

@@ -8,7 +8,6 @@ portfolio      = "Portfolio"
 goals          = "Goals"
 property       = "Property"
 people         = "People"
-settings       = "Settings"
 business       = "🏢 Business"
 hub_back       = "← Hub"
 

apps/finance/services/api/main/locales/pt.toml

@@ -8,7 +8,6 @@ portfolio      = "Carteira"
 goals          = "Objetivos"
 property       = "Imóveis"
 people         = "Pessoas"
-settings       = "Definições"
 business       = "🏢 Empresa"
 hub_back       = "← Hub"
 

apps/finance/services/api/main/templates/base.html

@@ -601,7 +601,7 @@
     {{$settingsActive := or (eq .Route "settings") (eq .Route "auto-import")}}
     <div class="nav-group">
       <button class="nav-group-btn {{if $settingsActive}}active{{end}}">
-        {{.T.Get "nav.settings"}} <svg viewBox="0 0 10 6" fill="none" stroke="currentColor" stroke-width="1.5"><path d="M1 1l4 4 4-4"/></svg>
+        {{.T.Get "nav.drawer.settings_label"}} <svg viewBox="0 0 10 6" fill="none" stroke="currentColor" stroke-width="1.5"><path d="M1 1l4 4 4-4"/></svg>
       </button>
       <div class="nav-dropdown">
         <a href="/settings?tab=accounts"    class="{{if eq .Route "settings"}}active{{end}}">{{.T.Get "nav.settings.accounts_categories"}}</a>