no nap tool — recv with long wait_seconds replaces it; max raised to 180s

recv-with-timeout is strictly better than a fixed sleep because it
wakes instantly on incoming messages. drop the half-written nap MCP
tool, raise the recv wait_seconds cap from 60s to 180s on both
agent and manager sockets.

prompts updated: agent.md + manager.md now spell out the pattern —
when there's nothing else useful to do, call recv with
wait_seconds=180 to park the turn; do NOT use Bash sleep for the
same purpose. todo drops the nap entry and the napping-state-badge
follow-up; both replaced by 'just use a long recv'.

TODO.md

@@ -27,10 +27,6 @@ Pick anything from here when relevant. Cross-cutting design notes live in
 
 ## UI / UX
 
-- **State badge: napping state.** Idle / thinking / compacting
-  already ship from server-side `TurnState`. Add `napping 😴`
-  once the `nap` tool exists — it just adds a new `TurnState`
-  variant the harness flips into for the duration of the nap.
 - **Terminal: `/model` slash command.** Operator-typeable model
   override from the terminal. Depends on the model-override work
   above; once an override mechanism exists, wire a `/model <name>`
@@ -81,14 +77,6 @@ Pick anything from here when relevant. Cross-cutting design notes live in
 
 ## Loop substance
 
-- **`nap` tool.** Agent-side MCP tool `mcp__hyperhive__nap(seconds)` that
-  parks the turn loop for a short while before next-message processing.
-  Use cases: agent decides it has nothing useful to do, or wants to
-  throttle itself between rapid wake events. Implementation: harness
-  records a "wake-not-before" timestamp; `recv_blocking` skips the long
-  poll until that ts; the state badge reads `napping · MM:SS` during.
-  Operator can cancel via the same `/cancel` slash command or a
-  dashboard button.
 - **Notes compaction.** `/state/` is bind-mounted persistently and agents
   are told (in the system prompt) to keep `/state/notes.md` for durable
   knowledge — but we don't currently nudge them to compact when notes

hive-ag3nt/prompts/agent.md

@@ -2,7 +2,7 @@ You are hyperhive agent `{label}` in a multi-agent system.
 
 Tools (hyperhive surface):
 
-- `mcp__hyperhive__recv()` — drain one more message from your inbox (returns `(empty)` if nothing pending).
+- `mcp__hyperhive__recv(wait_seconds?)` — drain one more message from your inbox (returns `(empty)` if nothing pending after the wait). Without `wait_seconds` it long-polls 30s. To **wait** for work when you have nothing else useful to do this turn, call with a long wait (e.g. `wait_seconds: 180`, the max) — you'll be woken instantly when a message arrives, otherwise return after the timeout. That is strictly better than calling `recv` repeatedly with short waits: lower latency on new work, fewer turns, no busy-loop. Never use a fixed `sleep` shell command for the same purpose.
 - `mcp__hyperhive__send(to, body)` — message a peer (by their name) or the operator (recipient `operator`, surfaces in the dashboard).
 
 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 + why. The manager evaluates the request (it doesn't rubber-stamp), 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.

hive-ag3nt/prompts/manager.md

@@ -2,7 +2,7 @@ You are the hyperhive manager `{label}` in a multi-agent system. You coordinate
 
 Tools (hyperhive surface):
 
-- `mcp__hyperhive__recv()` — drain one more message from your inbox.
+- `mcp__hyperhive__recv(wait_seconds?)` — drain one more message from your inbox. Without `wait_seconds` it long-polls 30s. To **wait** when you have nothing else to do, call with a long wait (e.g. `wait_seconds: 180`, the max) — you'll wake instantly on new work, otherwise return after the timeout. Use this instead of ending the turn or sleeping in a Bash command.
 - `mcp__hyperhive__send(to, body)` — message an agent (by name), another peer, or the operator (`operator` surfaces in the dashboard).
 - `mcp__hyperhive__request_spawn(name)` — queue a brand-new sub-agent for operator approval (≤9 char name).
 - `mcp__hyperhive__kill(name)` — graceful stop on a sub-agent. No approval required.

hive-ag3nt/src/mcp.rs

@@ -166,7 +166,10 @@ impl AgentServer {
     #[tool(
         description = "Pop one message from this agent's inbox. Returns the sender and body, \
             or an empty marker if nothing is waiting. Optional `wait_seconds` long-polls \
-            for that many seconds (capped at 60) before returning empty — default 30."
+            for that many seconds (capped at 180) before returning empty — default 30. \
+            Use a long wait_seconds (e.g. 120 or 180) when you have nothing else to do — \
+            it parks the turn until either a message arrives or the timeout fires, which \
+            is strictly better than a fixed sleep because incoming work wakes you instantly."
     )]
     async fn recv(&self, Parameters(args): Parameters<RecvArgs>) -> String {
         let log = format!("{args:?}");
@@ -314,8 +317,10 @@ impl ManagerServer {
 
     #[tool(
         description = "Pop one message from the manager inbox. Returns sender + body, or \
-        empty. Optional `wait_seconds` long-polls (capped at 60, default 30) so the \
-        manager can sit on Recv when there's nothing to do without burning turns."
+        empty. Optional `wait_seconds` long-polls (capped at 180, default 30) so the \
+        manager can sit on Recv when there's nothing to do without burning turns — \
+        prefer a long wait (120 or 180) over ending a turn early; you'll wake \
+        instantly when work arrives."
     )]
     async fn recv(&self, Parameters(args): Parameters<RecvArgs>) -> String {
         let log = format!("{args:?}");

hive-c0re/src/agent_server.rs

@@ -79,10 +79,12 @@ async fn serve(stream: UnixStream, agent: String, broker: Arc<Broker>) -> Result
 
 /// Default and max long-poll window for `Recv`. Caller can request a
 /// shorter (or longer up to `RECV_LONG_POLL_MAX`) wait via the
-/// `wait_seconds` field; values above the cap are clamped. Set well
-/// below typical TCP / proxy idle limits.
+/// `wait_seconds` field; values above the cap are clamped. 180s
+/// max keeps us under typical TCP/proxy idle limits while letting
+/// agents park their turn until a message lands instead of busy-
+/// looping with short waits.
 const RECV_LONG_POLL_DEFAULT: std::time::Duration = std::time::Duration::from_secs(30);
-const RECV_LONG_POLL_MAX: std::time::Duration = std::time::Duration::from_secs(60);
+const RECV_LONG_POLL_MAX: std::time::Duration = std::time::Duration::from_secs(180);
 
 fn recv_timeout(wait_seconds: Option<u64>) -> std::time::Duration {
     match wait_seconds {

hive-c0re/src/manager_server.rs

@@ -72,7 +72,7 @@ async fn serve(stream: UnixStream, coord: Arc<Coordinator>) -> Result<()> {
 /// Default and max long-poll window for manager `Recv`. Caller can
 /// request a shorter or longer (up to MAX) wait via `wait_seconds`.
 const MANAGER_RECV_LONG_POLL_DEFAULT: std::time::Duration = std::time::Duration::from_secs(30);
-const MANAGER_RECV_LONG_POLL_MAX: std::time::Duration = std::time::Duration::from_secs(60);
+const MANAGER_RECV_LONG_POLL_MAX: std::time::Duration = std::time::Duration::from_secs(180);
 
 fn manager_recv_timeout(wait_seconds: Option<u64>) -> std::time::Duration {
     match wait_seconds {