feat: garden containers crud (task 71)

- add listContainers/getContainer/searchContainers queries
- add createContainer/updateContainer/deleteContainer server actions with logActivity
- add ContainerList, ContainerDetail, ContainerForm client components
- add /garden, /garden/containers/[id], /garden/containers/new pages
- register garden.container entity with share + search in manifest
- add sprout icon to NavIcon registry
- add garden e2e test spec

src/app/garden/page.tsx

@@ -0,0 +1,12 @@
+import { listContainers } from "@/modules/garden/server/queries";
+import { ContainerList } from "@/modules/garden/components/container-list";
+
+export default async function GardenPage() {
+  const containers = await listContainers();
+  return (
+    <div className="page-content">
+      <h1 className="page-title">Garden</h1>
+      <ContainerList containers={containers} />
+    </div>
+  );
+}