feat: share links visible on plants/containers; container image gallery

- Fix ShareButton silently swallowing errors from createShareLink; now
  shows inline error text so failures are visible to the user
- Add getShareLinksForEntity server action and EntityShareLink type to
  _core/share.ts
- Add ShareLinkList component — renders active share links per entity
  with per-row Revoke; renders nothing when empty
- Wire ShareLinkList into plant and container detail pages (loaded
  server-side in parallel with the entity fetch)
- Add images jsonb column to garden_containers schema + migration 0018
- Add addContainerImage / removeContainerImage / setContainerPrimaryImage
  server actions mirroring the plant image pattern (10-image cap, first
  upload auto-sets cover)
- Update ContainerDetailDto, listContainers, getContainer to include images
- Rewrite ContainerDetail with Info/Gallery tabs; Gallery tab mirrors
  plant gallery (3-col grid, star/X overlays, upload button, counter)
- Update ContainerShareData and container renderSharedView to show cover
  image hero and secondary image grid on public share pages

src/app/garden/containers/[id]/page.tsx

@@ -1,14 +1,18 @@
 import { notFound } from "next/navigation";
 import { getContainer } from "@/modules/garden/server/queries";
 import { ContainerDetail } from "@/modules/garden/components/container-detail";
+import { getShareLinksForEntity } from "@/modules/_core/share";
 
 export default async function ContainerPage({ params }: { params: Promise<{ id: string }> }) {
   const { id } = await params;
-  const container = await getContainer(id);
+  const [container, shareLinks] = await Promise.all([
+    getContainer(id),
+    getShareLinksForEntity("garden.container", id),
+  ]);
   if (!container) notFound();
   return (
     <div className="page-content">
-      <ContainerDetail container={container} />
+      <ContainerDetail container={container} shareLinks={shareLinks} />
     </div>
   );
 }

src/app/garden/plants/[id]/page.tsx

@@ -2,14 +2,16 @@ import { notFound } from "next/navigation";
 import { listCalendars } from "@/modules/garden/server/calendar-bridge";
 import { getCareLogs, getCareSchedules, getPlant } from "@/modules/garden/server/queries";
 import { PlantDetail } from "@/modules/garden/components/plant-detail";
+import { getShareLinksForEntity } from "@/modules/_core/share";
 
 export default async function PlantPage({ params }: { params: Promise<{ id: string }> }) {
   const { id } = await params;
-  const [plant, careLogs, careSchedules, calendars] = await Promise.all([
+  const [plant, careLogs, careSchedules, calendars, shareLinks] = await Promise.all([
     getPlant(id),
     getCareLogs(id),
     getCareSchedules(id),
     listCalendars(),
+    getShareLinksForEntity("garden.plant", id),
   ]);
   if (!plant) notFound();
 
@@ -20,6 +22,7 @@ export default async function PlantPage({ params }: { params: Promise<{ id: stri
         careLogs={careLogs}
         careSchedules={careSchedules}
         calendars={calendars}
+        shareLinks={shareLinks}
       />
     </div>
   );