fix(showcase): use glob COPY package*.json ./ to bust poisoned Depot cache

CI failed on the 16 integrations whose explicit two-file COPY
`COPY package.json package-lock.json ./` hit a poisoned Depot remote
BuildKit cache entry: the cached layer reported CACHED but only
contained `package.json`, so the subsequent `npm ci` failed with
"command can only install with an existing package-lock.json".

Depot's cache had a layer indexed against the prior `COPY package.json
./` instruction; the new two-file instruction was matching it by some
internal cache-key collision. Two of 18 integrations (langgraph-python,
langgraph-typescript) passed only because they had a fully-cached
`RUN npm ci` layer from a sibling build that short-circuited the
broken COPY.

The glob form `COPY package*.json ./` produces an instruction string
that has never appeared in Depot's cache, so the layer is computed
fresh against the actual build context and includes both files. It
also reads cleaner than the explicit two-file enumeration.

No-Op when no cache poisoning is present -- the glob expands to exactly
package.json and package-lock.json on every integration (verified
locally; only those two files match per directory).

Author: AlemTuzlak

showcase/integrations/ag2/Dockerfile

@@ -2,7 +2,7 @@
 # Cache bust: 2026-04-07 smoke route
 FROM node:22-slim AS frontend
 WORKDIR /app
-COPY package.json package-lock.json ./
+COPY package*.json ./
 RUN npm ci --legacy-peer-deps
 COPY . .
 RUN npm run build

showcase/integrations/agno/Dockerfile

@@ -1,7 +1,7 @@
 # Stage 1: Build Next.js frontend
 FROM node:22-slim AS frontend
 WORKDIR /app
-COPY package.json package-lock.json ./
+COPY package*.json ./
 RUN npm ci --legacy-peer-deps
 COPY . .
 RUN npm run build

showcase/integrations/built-in-agent/Dockerfile

@@ -7,7 +7,7 @@
 # Stage 1: Build Next.js
 FROM node:22-slim AS builder
 WORKDIR /app
-COPY package.json package-lock.json ./
+COPY package*.json ./
 RUN npm ci --legacy-peer-deps
 COPY . .
 RUN npx next build

showcase/integrations/claude-sdk-python/Dockerfile

@@ -1,7 +1,7 @@
 # Stage 1: Build Next.js frontend
 FROM node:22-slim AS frontend
 WORKDIR /app
-COPY package.json package-lock.json ./
+COPY package*.json ./
 RUN npm ci --legacy-peer-deps
 COPY . .
 RUN npm run build

showcase/integrations/claude-sdk-typescript/Dockerfile

@@ -1,7 +1,7 @@
 # Stage 1: Build Next.js frontend + compile TypeScript agent server
 FROM node:22-slim AS builder
 WORKDIR /app
-COPY package.json package-lock.json ./
+COPY package*.json ./
 RUN npm ci --legacy-peer-deps
 COPY . .
 # Build Next.js frontend

showcase/integrations/crewai-crews/Dockerfile

@@ -1,7 +1,7 @@
 # Stage 1: Build Next.js frontend
 FROM node:22-slim AS frontend
 WORKDIR /app
-COPY package.json package-lock.json ./
+COPY package*.json ./
 RUN npm ci --legacy-peer-deps
 COPY . .
 RUN npm run build

showcase/integrations/google-adk/Dockerfile

@@ -1,7 +1,7 @@
 # Stage 1: Build Next.js frontend
 FROM node:22-slim AS frontend
 WORKDIR /app
-COPY package.json package-lock.json ./
+COPY package*.json ./
 RUN npm ci --legacy-peer-deps
 COPY . .
 RUN npm run build

showcase/integrations/langgraph-fastapi/Dockerfile

@@ -1,7 +1,7 @@
 # Stage 1: Build Next.js frontend
 FROM node:22-slim AS frontend
 WORKDIR /app
-COPY package.json package-lock.json ./
+COPY package*.json ./
 RUN npm ci --legacy-peer-deps
 COPY . .
 RUN npm run build

showcase/integrations/langgraph-python/Dockerfile

@@ -1,7 +1,7 @@
 # Stage 1: Build Next.js frontend
 FROM node:22-slim AS frontend
 WORKDIR /app
-COPY package.json package-lock.json ./
+COPY package*.json ./
 RUN npm ci --legacy-peer-deps
 COPY . .
 RUN npm run build

showcase/integrations/langgraph-typescript/Dockerfile

@@ -1,7 +1,7 @@
 # Stage 1: Build Next.js frontend
 FROM node:22-slim AS frontend
 WORKDIR /app
-COPY package.json package-lock.json ./
+COPY package*.json ./
 RUN npm ci --legacy-peer-deps
 COPY . .
 RUN npx next build