feat: initialize market app with browsing, product, and scraping code

Split from coop monolith. Includes:
- Market/browse/product blueprints
- Product sync API
- Suma scraping pipeline
- Templates for market, browse, and product views
- Dockerfile and CI workflow for independent deployment

entrypoint.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Optional: wait for Postgres to be reachable
+if [[ -n "${DATABASE_HOST:-}" && -n "${DATABASE_PORT:-}" ]]; then
+  echo "Waiting for Postgres at ${DATABASE_HOST}:${DATABASE_PORT}..."
+  for i in {1..60}; do
+    (echo > /dev/tcp/${DATABASE_HOST}/${DATABASE_PORT}) >/dev/null 2>&1 && break || true
+    sleep 1
+  done
+fi
+
+# Run DB migrations (uses alembic.ini/env.py to resolve the DB URL)
+echo "Running Alembic migrations..."
+alembic upgrade head
+
+# Clear Redis page cache on deploy
+if [[ -n "${REDIS_URL:-}" && "${REDIS_URL}" != "no" ]]; then
+  echo "Flushing Redis cache..."
+  python3 -c "
+import redis, os
+r = redis.from_url(os.environ['REDIS_URL'])
+r.flushall()
+print('Redis cache cleared.')
+" || echo "Redis flush failed (non-fatal), continuing..."
+fi
+
+# Start the app
+# APP_MODULE can be overridden per-service (e.g. apps.market.app:app)
+echo "Starting Hypercorn (${APP_MODULE:-suma_browser.app.app:app})..."
+PYTHONUNBUFFERED=1 exec hypercorn "${APP_MODULE:-suma_browser.app.app:app}" --bind 0.0.0.0:${PORT:-8000}