Replace el.toml with manifest.el throughout — El manifests are El, not TOML

crates/el-auth/src/session.rs

@@ -1,7 +1,7 @@
 //! Session provider — server-side sessions stored in memory.
 //!
 //! In production, sessions are stored in Redis or Engram (configured via
-//! `session_store = "redis"` or `session_store = "engram"` in `el.toml`).
+//! `session_store = "redis"` or `session_store = "engram"` in `manifest.el`).
 //! This implementation uses in-memory storage for simplicity and testing.
 
 use crate::{AuthContext, AuthError, AuthProvider, AuthResult, AuthUser, RoleRegistry};