* feat: extract pipeline core for library consumption
* fix: chmod workspace directory for container write access
* fix: resolve playwright output dir relative to deliverables parent
* feat: add multi-provider LLM support via ProviderConfig
* fix: resolve model overrides via options.model, remove unused model env passthrough
* fix: use ANTHROPIC_AUTH_TOKEN for custom base URL and router auth
* fix: skip env-based credential validation when providerConfig is present
* fix: support large UID/GID values for AD/LDAP users in container
ezl-keygraph