feat(routes): unify won leads and projects on a single /projects/:id page

- add role-prefix-free /projects/:id route (OWNER/ADMIN/FIELD_AGENT; ABAC guard lands in Phase 8)
- relax detail lookup so admin/field-agent open any project, owners only their own
- kanban drawer + project list route won leads (with projectId) to /projects/:id; pre-sale leads stay on the lead page

src/components/kanban/LeadInfoDrawer.jsx

@@ -299,7 +299,9 @@ export default function LeadInfoDrawer({ lead, columns, isOpen, onClose }) {
                             <button
                                 onClick={() => {
                                     onClose();
-                                    navigate(`${basePath}/leads/${lead.id}`);
+                                    // Won leads are projects now — open the unified project page; pre-sale leads stay on the lead page.
+                                    if (lead.projectId) navigate(`/projects/${lead.projectId}`);
+                                    else navigate(`${basePath}/leads/${lead.id}`);
                                 }}
                                 className="w-full flex items-center justify-center gap-2 px-4 py-2.5 rounded-xl bg-blue-600 hover:bg-blue-700 text-white text-sm font-semibold transition-colors shadow-sm"
                             >