design: flatten agency client menu structure, moving granular client controls to dedicated client pages

vibn-frontend/app/[workspace]/agency/layout.tsx

@@ -397,51 +397,19 @@ export default function AgencyLayout({
           />
           <NavItem icon={Icons.Users} label="Contacts" href="#" />
 
-          <SectionHeader>Delivery (Projects)</SectionHeader>
+          <SectionHeader>Clients</SectionHeader>
 
           {clients.map((client) => {
             const clientPath = `/${workspace}/agency/client/${client.id}`;
             const isActive = pathname.startsWith(clientPath);
             return (
-              <React.Fragment key={client.id}>
-                <NavItem
-                  icon={Icons.Folder}
-                  label={client.name}
-                  href={clientPath}
-                  active={isActive}
-                />
-                {isActive && (
-                  <div
-                    style={{
-                      marginTop: 2,
-                      marginBottom: 8,
-                      display: "flex",
-                      flexDirection: "column",
-                    }}
-                  >
-                    <NavItem
-                      inset
-                      label="Builder / IDE"
-                      href={`${clientPath}/builder`}
-                    />
-                    <NavItem
-                      inset
-                      label="Infrastructure"
-                      href={`${clientPath}/infra`}
-                    />
-                    <NavItem
-                      inset
-                      label="Time & Tasks"
-                      href={`${clientPath}/tasks`}
-                    />
-                    <NavItem
-                      inset
-                      label="Secrets Manager"
-                      href={`${clientPath}/secrets`}
-                    />
-                  </div>
-                )}
-              </React.Fragment>
+              <NavItem
+                key={client.id}
+                icon={Icons.Folder}
+                label={client.name}
+                href={clientPath}
+                active={isActive}
+              />
             );
           })}