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c1e7aa5504
Replace the dump→resolve→model_validate roundtrip with a recursive walk
that substitutes ${VAR} in string values directly on BaseModel /
__pydantic_extra__ / dict / list nodes. Identity is preserved on any
subtree with no references, so the original Config instance is returned
unchanged when nothing needs resolving.
Side effects:
- exclude=True fields (e.g. DreamConfig.cron) now survive even when
other fields in the same config contain ${VAR} references, closing
the edge case left open by the previous fast-path-only fix.
- _has_env_refs is dropped (the walker short-circuits naturally).
- Added a regression test pairing cron with a resolved providers.groq
api_key to lock the coexistence case.
Made-with: Cursor