feat: version 2.6.0 -- barra de progreso rediseñada + icono de compartido

Porcentaje de avance dentro de la barra (antes aparte), fondo gris
visible en vez de casi invisible sobre el tema oscuro. Nuevo icono en
el listado de Proyectos que muestra con quien esta compartido cada
proyecto y su permiso, solo si aplica.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

frontend/src/pages/Proyectos/ProyectosPage.jsx

@@ -19,6 +19,7 @@ import { ComboBox } from '../../components/ComboBox.jsx';
 import { StatusBadge, ProgressBar } from '../../components/StatusBadge.jsx';
 import { Badge } from '../../components/Badge.jsx';
 import { DetailPopup } from '../../components/DetailPopup.jsx';
+import { SharedWithIcon } from '../../components/SharedWithIcon.jsx';
 
 const CAN_DELETE_ROLES = ['superadmin', 'admin', 'it_manager', 'project_lead'];
 
@@ -168,7 +169,8 @@ export default function ProyectosPage() {
     { key: 'status_name', label: t('common_status'), render: (r) => <StatusBadge name={r.status_name} color={r.status_color} /> },
     { key: 'priority_name', label: t('common_priority'), sortValue: (r) => r.priority_level, render: (r) => <StatusBadge name={r.priority_name} color={r.priority_color} /> },
     { key: 'owner_name', label: t('project_owner') },
-    { key: 'progress_pct', label: t('project_progress'), render: (r) => <div style={{ width: 100 }}><ProgressBar value={Number(r.progress_pct)} /></div> },
+    { key: 'progress_pct', label: t('project_progress'), render: (r) => <div style={{ width: 90 }}><ProgressBar value={Number(r.progress_pct)} /></div> },
+    { key: 'shared', label: '', sortable: false, render: (r) => <SharedWithIcon projectId={r.id} count={r.shared_count} /> },
     { key: 'risk_level', label: t('project_risk'), render: (r) => <Badge color={RISK_COLOR[r.risk_level]}>{t(`risk_${r.risk_level}`)}</Badge> },
     { key: 'updated_at', label: t('project_updated_at'), render: (r) => String(r.updated_at).slice(0, 16) },
     ...(showTrash ? [{ key: 'deleted_at', label: t('project_deleted_at'), render: (r) => String(r.deleted_at).slice(0, 10) }] : []),