feat: member portal Sprint 11 — Memories / Gallery

- GalleryAlbum + GalleryItem models + migration (publish gate, cover image, ordered items)
- GalleryModule: admin CRUD for albums + items
- Member endpoints: GET /my/memories (published albums w/ cover + count), GET /my/memories/:id (album + photos)
- /my/memories page: album grid with cover thumbnails
- /my/memories/[id] page: photo grid with captions
- Memories nav item; register GalleryModule

Completes Phase 2 (Intelligence) of the member portal — Sprints 9-11.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/api/prisma/migrations/20260617260000_add_gallery/migration.sql

@@ -0,0 +1,31 @@
+CREATE TABLE "GalleryAlbum" (
+    "id" TEXT NOT NULL,
+    "tenantId" TEXT NOT NULL,
+    "title" TEXT NOT NULL,
+    "description" TEXT,
+    "coverUrl" TEXT,
+    "isPublished" BOOLEAN NOT NULL DEFAULT false,
+    "createdBy" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+    CONSTRAINT "GalleryAlbum_pkey" PRIMARY KEY ("id")
+);
+
+CREATE TABLE "GalleryItem" (
+    "id" TEXT NOT NULL,
+    "albumId" TEXT NOT NULL,
+    "tenantId" TEXT NOT NULL,
+    "mediaUrl" TEXT NOT NULL,
+    "caption" TEXT,
+    "sortOrder" INTEGER NOT NULL DEFAULT 0,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT "GalleryItem_pkey" PRIMARY KEY ("id")
+);
+
+CREATE INDEX "GalleryAlbum_tenantId_isPublished_idx" ON "GalleryAlbum"("tenantId", "isPublished");
+CREATE INDEX "GalleryItem_albumId_idx" ON "GalleryItem"("albumId");
+CREATE INDEX "GalleryItem_tenantId_idx" ON "GalleryItem"("tenantId");
+
+ALTER TABLE "GalleryAlbum" ADD CONSTRAINT "GalleryAlbum_tenantId_fkey" FOREIGN KEY ("tenantId") REFERENCES "Tenant"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
+ALTER TABLE "GalleryItem" ADD CONSTRAINT "GalleryItem_albumId_fkey" FOREIGN KEY ("albumId") REFERENCES "GalleryAlbum"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+ALTER TABLE "GalleryItem" ADD CONSTRAINT "GalleryItem_tenantId_fkey" FOREIGN KEY ("tenantId") REFERENCES "Tenant"("id") ON DELETE RESTRICT ON UPDATE CASCADE;