feat(meal-plan): weekly planner, pantry, shopping lists, nutrition tracking

AI-generated weekly meal plans with pantry-awareness. Manual entry per slot.
Pantry inventory management. Auto-generated shopping lists from meal plan.
Weekly nutrition bar chart vs daily goals. Nutrition goals settings.

apps/web/app/api/v1/meal-plans/[weekStart]/entries/[entryId]/route.ts

@@ -0,0 +1,22 @@
+import { NextRequest, NextResponse } from "next/server";
+import { db, mealPlans, mealPlanEntries, eq, and } from "@epicure/db";
+import { requireSession } from "@/lib/api-auth";
+
+type Params = { params: Promise<{ weekStart: string; entryId: string }> };
+
+export async function DELETE(_req: NextRequest, { params }: Params) {
+  const { session, response } = await requireSession();
+  if (response) return response;
+  const { weekStart, entryId } = await params;
+
+  const plan = await db.query.mealPlans.findFirst({
+    where: and(eq(mealPlans.userId, session!.user.id), eq(mealPlans.weekStart, weekStart)),
+  });
+  if (!plan) return NextResponse.json({ error: "Not found" }, { status: 404 });
+
+  await db.delete(mealPlanEntries).where(
+    and(eq(mealPlanEntries.id, entryId), eq(mealPlanEntries.mealPlanId, plan.id))
+  );
+
+  return new NextResponse(null, { status: 204 });
+}