Add CI check for missing workspace packages in Dockerfiles

Adds a script that verifies every packages/*/package.json is listed in
all app Dockerfiles. Catches the recurring issue where adding a new
workspace package breaks production because the Dockerfile deps stage
doesn't know about it.

Also fixes two pre-existing missing packages in the planner Dockerfile
(api, map-core) caught by the new check.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/workflows/ci.yml

@@ -38,6 +38,13 @@ jobs:
         run: pnpm audit --audit-level=high
         continue-on-error: true
 
+  dockerfile-check:
+    name: Dockerfile Package Check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - run: bash scripts/check-dockerfiles.sh
+
   typecheck:
     name: Typecheck
     runs-on: ubuntu-latest

apps/planner/Dockerfile

@@ -11,6 +11,8 @@ COPY packages/ui/package.json packages/ui/
 COPY packages/map/package.json packages/map/
 COPY packages/gpx/package.json packages/gpx/
 COPY packages/i18n/package.json packages/i18n/
+COPY packages/api/package.json packages/api/
+COPY packages/map-core/package.json packages/map-core/
 COPY packages/db/package.json packages/db/
 COPY packages/jobs/package.json packages/jobs/
 RUN pnpm install --frozen-lockfile

scripts/check-dockerfiles.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+# Verify all workspace packages are listed in Dockerfiles.
+# Run in CI to catch missing COPY lines when new packages are added.
+set -euo pipefail
+
+errors=0
+
+for pkg_json in packages/*/package.json; do
+  pkg_dir=$(dirname "$pkg_json")  # e.g. packages/jobs
+  pkg_name=$(basename "$pkg_dir")  # e.g. jobs
+
+  for dockerfile in apps/*/Dockerfile; do
+    app=$(basename "$(dirname "$dockerfile")")
+    if ! grep -q "COPY ${pkg_dir}/package.json" "$dockerfile"; then
+      echo "ERROR: $dockerfile is missing COPY for $pkg_dir/package.json"
+      errors=$((errors + 1))
+    fi
+  done
+done
+
+if [ "$errors" -gt 0 ]; then
+  echo ""
+  echo "$errors missing package(s) in Dockerfiles. Add COPY lines to the deps stage."
+  exit 1
+fi
+
+echo "All workspace packages present in all Dockerfiles."