clean workspace: remove supervisor packe + add instructions about how AGE redis commands work

supervisor/Cargo.toml

@@ -1,9 +0,0 @@
-[package]
-name = "supervisor"
-version = "0.1.0"
-edition = "2021"
-
-[dependencies]
-# The supervisor will eventually depend on the herodb crate.
-# We can add this dependency now.
-# herodb = { path = "../herodb" }

supervisor/src/main.rs

@@ -1,4 +0,0 @@
-fn main() {
-    println!("Hello from the supervisor crate!");
-    // Supervisor logic will be implemented here.
-}