phi-agent 0.2.6

phi-agent — General-purpose AI Agent framework (builder factory, renderer, config, session management)
Documentation 
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//! Configuration resolution helpers.
//!
//! Handles LLM configuration (API key, model, base URL) with multi-source
//! resolution: CLI argument → environment variable (`.env`) → default.

pub mod llm;

pub use llm::{LlmConfig, resolve_llm_config};

use std::env;

/// Read an optional environment variable. Empty strings are treated as unset.
pub(crate) fn optional_env(key: &str) -> Option<String> {
    env::var(key).ok().filter(|v| !v.is_empty())
}