fix: standardize locked-vs-hidden treatment across all 9 per-tier gated features (v0.79.0)

Rule, applied consistently everywhere via a new isFeatureAvailableAnyTier() helper: if a feature is enabled on at least one tier, it stays visible for locked-out viewers with a small "Pro" badge and opens an upgrade prompt on click; if a feature is disabled on every tier, it hides entirely, since there's no upgrade path to point at.

Covers: recipe variations, meal/drink pairings, nutrition estimation, Markdown export (5 call sites), weekly nutrition, import from URL, import from photo, and the Instacart grocery-delivery menu item. Previously inconsistent — some hid outright, one showed a lock icon overlapping its own icon.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/web/app/(app)/recipes/new/page.tsx

@@ -4,7 +4,7 @@ import { auth } from "@/lib/auth/server";
 import { RecipeForm } from "@/components/recipe/recipe-form";
 import { NewRecipeHeader } from "@/components/recipe/new-recipe-header";
 import { PhotoImportButton } from "@/components/recipe/photo-import-button";
-import { getFeatureFlagMatrix, type Tier } from "@/lib/feature-flags";
+import { getFeatureFlagMatrix, isFeatureAvailableAnyTier, type Tier } from "@/lib/feature-flags";
 
 export const metadata: Metadata = {};
 
@@ -12,13 +12,14 @@ export default async function NewRecipePage() {
   const session = await auth.api.getSession({ headers: await headers() });
   const viewerTier = (session?.user as { tier?: string } | undefined)?.tier as Tier | undefined ?? "free";
   const featureFlags = await getFeatureFlagMatrix();
-  const canImportPhoto = featureFlags.recipe_import_photo[viewerTier];
+  const importPhotoLocked = !featureFlags.recipe_import_photo[viewerTier];
+  const importPhotoAvailable = isFeatureAvailableAnyTier(featureFlags, "recipe_import_photo");
 
   return (
     <div className="space-y-6">
       <div className="flex items-start justify-between gap-4">
         <NewRecipeHeader />
-        {canImportPhoto && <PhotoImportButton />}
+        {importPhotoAvailable && <PhotoImportButton locked={importPhotoLocked} />}
       </div>
       <RecipeForm />
     </div>