added .env readability

WatcherAgent/src/config.rs

@@ -0,0 +1,22 @@
+use config::Config;
+use serde::Deserialize;
+
+use crate::models::WatcherConfig;
+
+#[derive(Debug, Deserialize, Clone)]
+pub struct AppConfig {
+    pub watcher: WatcherConfig,
+}
+
+impl AppConfig {
+    pub fn from_env() -> Result<Self, config::ConfigError> {
+        // Load .env file (works in both Docker and local development)
+        dotenvy::dotenv().ok();
+
+        let mut cfg = config::Config::builder()
+            .add_source(config::Environment::with_prefix("WATCHER").separator("_"))
+            .build()?;
+
+        cfg.try_deserialize()
+    }
+}