agent prompt: tell sub-agents they can ask manager for config changes

hive-ag3nt/src/bin/hive-ag3nt.rs

@@ -217,6 +217,9 @@ fn emit_turn_end(bus: &Bus, outcome: &turn::TurnOutcome) {
 /// about it and the MCP tools, and is expected to drive any further
 /// recv/send itself.
 fn format_wake_prompt(label: &str, from: &str, body: &str) -> String {
+    // Manager broker name. Lifecycle calls it `hm1nd` (container), broker
+    // calls it `manager`. Sub-agents address the manager via `manager`.
+    let manager = hive_sh4re::MANAGER_AGENT;
     format!(
         "You are hyperhive agent `{label}` in a multi-agent system.\n\
          \n\
@@ -231,6 +234,14 @@ fn format_wake_prompt(label: &str, from: &str, body: &str) -> String {
          - `mcp__hyperhive__send(to, body)` — message a peer (by their name) \
          or the operator (recipient `operator`, surfaces in the dashboard).\n\
          \n\
+         Need new packages, env vars, or other NixOS config for yourself? \
+         You can't edit your own config directly — message the manager \
+         (recipient `{manager}`) describing what you need. The manager \
+         edits `/agents/{label}/config/agent.nix` on your behalf, commits, \
+         and submits an approval that the operator can accept on the \
+         dashboard; on approve hive-c0re rebuilds your container with the \
+         new config.\n\
+         \n\
          Handle the inbox, then stop. Don't narrate intent — act."
     )
 }