feat(dashboard): Complete dashboard desktop cleanup and improvements

User Stories Completed:
- US-001: Eliminare SolduriCompactCard de pe Desktop
- US-002: Eliminare Icoane din Header-ul CollapsibleCard
- US-003: Reorganizare TreasuryDualCard - Text Înainte de Grafice
- US-004: Reorganizare ClientiBalanceCard - Text Înainte de Grafice
- US-005: Reorganizare FurnizoriBalanceCard - Text Înainte de Grafice
- US-006: Grafice Colapsabile în TreasuryDualCard
- US-007: Grafice Colapsabile în ClientiBalanceCard
- US-008: Grafice Colapsabile în FurnizoriBalanceCard
- US-009: Grafice Colapsabile în CashFlowMetricCard

Additional Improvements:
- Add cache metadata display (CacheFooter component) for all dashboard cards
- Add @cached decorators to get_monthly_flows and get_indicators_with_sparklines
- Fix financial indicators calculations and sparkline sync
- Add state reset on company change to prevent stale data
- New shared components: CacheFooter.vue, authRedirect.js
- Enhanced FinancialIndicatorsCard with sparklines and period selection

Squashed from branch: ralph/dashboard-desktop-cleanup (11 commits)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/modules/reports/components/dashboard/cards/CashFlowMetricCard.vue

@@ -22,8 +22,22 @@
       </div>
     </div>
 
-    <!-- Dual sparkline charts - stacked vertical -->
-    <div class="sparkline-dual-container" v-if="hasSparklineData">
+    <!-- Charts toggle header -->
+    <div
+      v-if="hasSparklineData"
+      class="charts-toggle-header"
+      @click="toggleChartsExpanded"
+    >
+      <span>Grafice evoluție</span>
+      <i
+        class="pi pi-chevron-right"
+        :class="{ expanded: chartsExpanded }"
+      ></i>
+    </div>
+
+    <!-- Dual sparkline charts - stacked vertical (collapsible) -->
+    <div v-show="chartsExpanded" class="charts-content">
+      <div class="sparkline-dual-container" v-if="hasSparklineData">
       <!-- Grafic Încasări -->
       <div class="sparkline-wrapper">
         <div class="sparkline-title text-success">Încasări</div>
@@ -40,6 +54,14 @@
         </div>
       </div>
     </div>
+    </div>
+
+    <!-- Cache Footer -->
+    <CacheFooter
+      :cache-hit="cacheInfo?.hit"
+      :response-time-ms="cacheInfo?.time"
+      :cache-source="cacheInfo?.source"
+    />
   </div>
 </template>
 
@@ -53,6 +75,7 @@ import {
   nextTick,
 } from "vue";
 import { Chart, registerables } from "chart.js";
+import CacheFooter from "@/shared/components/CacheFooter.vue";
 
 Chart.register(...registerables);
 
@@ -97,6 +120,10 @@ const props = defineProps({
     type: Array,
     default: () => [],
   },
+  cacheInfo: {
+    type: Object,
+    default: () => ({ hit: false, time: 0, source: null }),
+  },
 });
 
 // Refs pentru 2 canvas-uri separate
@@ -105,6 +132,13 @@ const outflowsCanvas = ref(null);
 let inflowsChartInstance = null;
 let outflowsChartInstance = null;
 
+// Charts collapsible state
+const chartsExpanded = ref(false);
+
+const toggleChartsExpanded = () => {
+  chartsExpanded.value = !chartsExpanded.value;
+};
+
 // Format currency
 const formatCurrency = (amount) => {
   if (!amount && amount !== 0) return "0 RON";
@@ -607,6 +641,39 @@ onBeforeUnmount(() => {
   min-height: 60px;
 }
 
+/* Charts toggle header */
+.charts-toggle-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: var(--space-sm) var(--space-md);
+  margin-top: var(--space-sm);
+  background: var(--surface-hover);
+  border-radius: var(--radius-sm);
+  cursor: pointer;
+  font-size: var(--text-sm);
+  font-weight: var(--font-medium);
+  color: var(--color-text-secondary);
+  transition: background-color var(--transition-fast);
+}
+
+.charts-toggle-header:hover {
+  background: var(--surface-border);
+}
+
+.charts-toggle-header i {
+  transition: transform var(--transition-fast);
+}
+
+.charts-toggle-header i.expanded {
+  transform: rotate(90deg);
+}
+
+/* Charts content wrapper */
+.charts-content {
+  margin-top: var(--space-sm);
+}
+
 /* Dual sparkline container (unique to this card) */
 .sparkline-dual-container {
   width: 100%;