fix: rename overview.md files to avoid conflicts and add collection name

bin/coordinator/src/models/runner.rs

@@ -13,8 +13,6 @@ pub struct Runner {
     pub address: IpAddr,
     /// Needs to be set by the runner, usually `runner<runnerid`
     pub topic: String,
-    /// The executor this runner can handle (e.g., "python", "rhai"); used for routing
-    pub executor: String,
     /// If this is true, the runner also listens on a local redis queue
     pub local: bool,
     /// Optional secret used for authenticated supervisor calls (if required)