feat: rename Active Projects references to Significant Interventions

src/components/SubNav.tsx

@@ -13,7 +13,7 @@ const sections: NavSection[] = [
   { id: 'overview', label: 'Overview', tileId: 'patient-summary' },
   { id: 'skills', label: 'Skills', tileId: 'section-skills' },
   { id: 'experience', label: 'Experience', tileId: 'section-experience' },
-  { id: 'projects', label: 'Projects', tileId: 'projects' },
+  { id: 'projects', label: 'Significant Interventions', tileId: 'projects' },
   { id: 'education', label: 'Education', tileId: 'section-education' },
 ]
 

src/components/tiles/ProjectsTile.tsx

@@ -127,7 +127,7 @@ export function ProjectsTile() {
 
   return (
     <Card tileId="projects">
-      <CardHeader dotColor="amber" title="ACTIVE PROJECTS" />
+      <CardHeader dotColor="amber" title="SIGNIFICANT INTERVENTIONS" />
 
       <div style={{ display: 'flex', flexDirection: 'column', gap: '10px' }}>
         {investigations.map((project) => (