Rename terminology to industry standard terms

- Grove → Project
- Tree → Package
- Fruit → Artifact
- Graft → Tag
- Cultivate → Upload
- Harvest → Download

Updated across:
- Backend models, schemas, and routes
- Frontend types, API client, and components
- README documentation
- API endpoints now use /project/:project/packages pattern

frontend/src/pages/Home.css

@@ -129,36 +129,36 @@
   border-radius: 8px;
 }
 
-.grove-grid {
+.project-grid {
   display: grid;
   grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
   gap: 1rem;
 }
 
-.grove-card {
+.project-card {
   display: block;
   color: inherit;
   transition: transform 0.2s, box-shadow 0.2s;
 }
 
-.grove-card:hover {
+.project-card:hover {
   transform: translateY(-2px);
   box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
   text-decoration: none;
 }
 
-.grove-card h3 {
+.project-card h3 {
   color: var(--primary);
   margin-bottom: 0.5rem;
 }
 
-.grove-card p {
+.project-card p {
   color: var(--text-light);
   font-size: 0.875rem;
   margin-bottom: 1rem;
 }
 
-.grove-meta {
+.project-meta {
   display: flex;
   justify-content: space-between;
   align-items: center;