refactor(hive-c0re): drop the request_init_config tool and InitConfig approval

swarm-controller's `InitAgentConfigRepo` node already covers config-repo
creation, so this deletes a duplicate rather than a capability; old
`init_config` rows are skipped by `collect_lenient` with no migration, by
operator decision.

Refs #4398

hive-c0re/src/coordinator.rs

@@ -1512,8 +1512,8 @@ impl Coordinator {
 
     /// Agents that have an operator-approved proposed config repo but
     /// were never deployed — proposed `.git` exists, applied `.git` does
-    /// not. Their `topology.json` parent edge (written at `InitConfig`
-    /// approval) must survive `topology::reconcile` until the first
+    /// not. Their `topology.json` parent edge (written before the first
+    /// spawn) must survive `topology::reconcile` until the first
     /// apply-commit spawns the container. Distinct from tombstones,
     /// which have an applied repo from a prior deploy.
     #[must_use]