- Extracted environment variable parsing into centralized `env_uint!` macro for consistent configuration handling across modules.
- Refactored recursion logic to validate scope narrowing before recursing, introducing `recursion_narrows_scope()` and `MIN_RECURSE_SAVINGS` constant.
- Consolidated static configuration initialization from LazyLock to declarative `env_uint!` macro in render and cache modules.
- Improved control flow statement classification in defaults module by replacing positional candidates with named function-context candidates.
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