feat(sdk,plugins): API publique d'accès fichiers/workspace + analyse structure (#124,#129)

crates/infrastructure/src/process/mod.rs

@@ -9,7 +9,9 @@
 use async_trait::async_trait;
 use tokio::process::Command;
 
-use domain::ports::{ExitStatus, Output, ProcessError, ProcessSpawner, SpawnSpec};
+use domain::ports::{
+    EnvironmentReader, ExitStatus, Output, ProcessError, ProcessSpawner, SpawnSpec,
+};
 
 /// Process spawner backed by the local OS via `tokio::process::Command`.
 #[derive(Debug, Default, Clone, Copy)]
@@ -23,6 +25,24 @@ impl LocalProcessSpawner {
     }
 }
 
+/// Environment reader backed by the local process environment.
+#[derive(Debug, Default, Clone, Copy)]
+pub struct LocalEnvironmentReader;
+
+impl LocalEnvironmentReader {
+    /// Creates a new [`LocalEnvironmentReader`].
+    #[must_use]
+    pub const fn new() -> Self {
+        Self
+    }
+}
+
+impl EnvironmentReader for LocalEnvironmentReader {
+    fn get(&self, name: &str) -> Option<String> {
+        std::env::var(name).ok()
+    }
+}
+
 #[async_trait]
 impl ProcessSpawner for LocalProcessSpawner {
     async fn run(&self, spec: SpawnSpec) -> Result<Output, ProcessError> {