Add a migrations check to CI

which can be skipped with SKIP_MIGRATION_CHECK=1

bin/migration-audit

@@ -0,0 +1,80 @@
+#!/usr/bin/env bash
+
+set -eo pipefail
+
+# Prefer app executables
+app_root="$(cd "$(dirname "$0")/.."; pwd)"
+export PATH="$app_root/bin:$PATH"
+
+# Install gum if needed
+if ! command -v gum &> /dev/null; then
+  echo
+  echo "▸ Installing gum"
+  if command -v pacman &> /dev/null; then
+    sudo pacman -S --noconfirm gum
+  elif command -v brew &> /dev/null; then
+    brew install gum
+  else
+    echo "Please install gum: https://github.com/charmbracelet/gum"
+    exit 1
+  fi
+  echo
+fi
+
+step() {
+  local spin=false
+  if [[ $1 == "--spin" ]] ; then
+    spin=true
+    spin_title=$2
+    shift
+    shift
+  fi
+  local step_name="$1"
+  shift
+
+  gum style --foreground 135 --bold "▸ $step_name"
+  gum style --foreground 240 "$*"
+
+  if $spin; then
+    gum spin --spinner dot --title "$spin_title" --show-error -- "$@"
+  else
+    "$@"
+  fi
+
+  local exit_code=$?
+  echo
+  return $exit_code
+}
+
+echo
+# Check if any migration or schema files have changed between origin/main and current working tree
+changed_files=$(git diff --name-only origin/main...HEAD -- 'db/migrate/*' 'db/schema.rb' 'db/schema_cache.yml')
+
+# If no relevant files changed, exit successfully
+if [ -z "$changed_files" ]; then
+  gum style --foreground 240 "No migration or schema files changed. Skipping audit."
+  exit 0
+fi
+
+gum style --foreground 135 --bold "Migration or schema files changed:"
+gum style --foreground 240 "$changed_files"
+echo
+
+step "Deleting schema files" rm -f db/schema.rb db/schema_cache.yml
+
+step "Deleting tenant directory" rm -rf storage/tenants/development/175932900
+
+step --spin "Migrating..." "Regenerating schema files" bin/rails db:migrate
+
+# Check if the schema files have any git changes
+if git diff --quiet db/schema.rb db/schema_cache.yml; then
+  gum style --foreground 46 "✓ Schema files are in sync with migrations"
+  exit 0
+else
+  echo
+  gum style --foreground 196 --bold "✗ Schema files are out of sync with migrations!"
+  echo
+  gum style --foreground 135 --bold "Differences:"
+  git --no-pager diff db/schema.rb db/schema_cache.yml
+  exit 1
+fi