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/page.tsx

@@ -10,7 +10,7 @@ import { RecipesGrid } from "@/components/recipe/recipes-grid";
 import { CookingAssistantPanel } from "@/components/recipe/cooking-assistant-panel";
 import { getMessages } from "@/lib/i18n/server";
 import { getFeaturePrefs } from "@/lib/feature-prefs";
-import { getFeatureFlagMatrix, type Tier } from "@/lib/feature-flags";
+import { getFeatureFlagMatrix, isFeatureAvailableAnyTier, type Tier } from "@/lib/feature-flags";
 
 export const metadata: Metadata = {};
 
@@ -62,7 +62,8 @@ export default async function RecipesPage({ searchParams }: { searchParams: Sear
   const featurePrefs = await getFeaturePrefs(session.user.id);
   const viewerTier = (session.user as { tier?: string }).tier as Tier | undefined ?? "free";
   const featureFlags = await getFeatureFlagMatrix();
-  const canImportUrl = featureFlags.recipe_import_url[viewerTier];
+  const importUrlLocked = !featureFlags.recipe_import_url[viewerTier];
+  const importUrlAvailable = isFeatureAvailableAnyTier(featureFlags, "recipe_import_url");
 
   const { q, sort, visibility, difficulty, tag, page: pageParam, batchCook, recipeType, url, text } = await searchParams;
   const sharedUrl = extractSharedUrl({ url, text });
@@ -162,8 +163,9 @@ export default async function RecipesPage({ searchParams }: { searchParams: Sear
         initialTag={tagFilter ?? ""}
         initialBatchCook={batchCookFilter ?? ""}
         initialRecipeType={recipeTypeFilter ?? ""}
-        sharedUrl={canImportUrl ? sharedUrl : undefined}
-        showImportUrl={canImportUrl}
+        sharedUrl={importUrlAvailable && !importUrlLocked ? sharedUrl : undefined}
+        importUrlAvailable={importUrlAvailable}
+        importUrlLocked={importUrlLocked}
       />
       <RecipesEmptyState query={query} count={total} />
       <RecipesGrid key={`${query}-${sortKey}-${visibilityFilter}-${difficultyFilter}-${tagFilter}-${batchCookFilter}-${recipeTypeFilter}-${page}`} recipes={recipesWithFavorites} />