feat: provision dedicated per-project Theia workspaces

- lib/coolify-workspace.ts: creates a Coolify docker-image app at
  {slug}.ide.vibnai.com for each project, patches in vibn-auth Traefik
  labels, sets env vars, and starts deployment
- create/route.ts: provisions Theia workspace after Gitea repo creation;
  stores theiaWorkspaceUrl + theiaAppUuid on the project record
- theia-auth/route.ts: for *.ide.vibnai.com hosts, verifies the
  authenticated user is the project owner (slug → fs_projects lookup)
- overview/page.tsx: Open IDE always links (dedicated URL or shared fallback)
- project-creation-modal.tsx: shows dedicated workspace URL in success screen

Co-authored-by: Cursor <cursoragent@cursor.com>

app/[workspace]/project/[projectId]/overview/page.tsx

@@ -200,19 +200,16 @@ export default function ProjectOverviewPage() {
             <RefreshCw className={`h-4 w-4 mr-1.5 ${refreshing ? "animate-spin" : ""}`} />
             Refresh
           </Button>
-          {project.theiaWorkspaceUrl ? (
-            <Button size="sm" asChild>
-              <a href={project.theiaWorkspaceUrl} target="_blank" rel="noopener noreferrer">
-                <Terminal className="h-4 w-4 mr-1.5" />
-                Open IDE
-              </a>
-            </Button>
-          ) : (
-            <Button size="sm" variant="outline" disabled>
+          <Button size="sm" asChild>
+            <a
+              href={project.theiaWorkspaceUrl ?? 'https://theia.vibnai.com'}
+              target="_blank"
+              rel="noopener noreferrer"
+            >
               <Terminal className="h-4 w-4 mr-1.5" />
-              IDE — provisioning
-            </Button>
-          )}
+              Open IDE
+            </a>
+          </Button>
         </div>
       </div>