- export_serving.py: move `import re` to module level — was imported inside a loop body on every iteration - sitemap.py: add comment documenting that the in-memory TTL cache is process-local (valid for single-worker deployment, Dockerfile --workers 1) - playtomic_availability.py: use `or "10"` fallback for CIRCUIT_BREAKER_THRESHOLD env var to handle empty-string case Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>