fix(broker): route all wakes through sqlite, remove transient ping buffer

hive-ag3nt/src/bin/hive.rs

@@ -391,11 +391,7 @@ impl Surface for AgentSurface {
     async fn wake_external(socket: &Path, from: String, body: String) -> Result<()> {
         let resp: AgentResponse = client::request(
             socket,
-            &AgentRequest::Wake {
-                from,
-                body,
-                transient: false,
-            },
+            &AgentRequest::Wake { from, body },
         )
         .await?;
         match resp {

hive-ag3nt/src/forge_notify.rs

@@ -818,7 +818,6 @@ async fn poll_once(
         let req = hive_sh4re::Request::Wake {
             from: "forge".to_owned(),
             body,
-            transient: false,
         };
         let deliver_result = crate::client::request::<_, hive_sh4re::Response>(socket, &req)
             .await

hive-ag3nt/src/serve_common.rs

@@ -11,9 +11,8 @@ use crate::turn_stats::TurnStatRow;
 /// Assemble the per-turn wake prompt string. The role/tools/etc. live in the
 /// system prompt; this is just the wake signal body. `id` is the broker row
 /// id, rendered as a `[msg #<id>]` marker so the agent can reference it in
-/// `ack_until` (transient pings carry the sentinel 0 and render without it).
-/// `unread` is the inbox depth after this message was popped. `redelivered`
-/// prepends a "may already be handled" banner.
+/// `ack_until`. `unread` is the inbox depth after this message was popped.
+/// `redelivered` prepends a "may already be handled" banner.
 #[must_use]
 pub fn format_wake_prompt(
     id: i64,