docs: add missing #[must_use], # Errors, # Panics across public api

hive-ag3nt/src/serve_common.rs

@@ -12,6 +12,7 @@ use crate::turn_stats::TurnStatRow;
 /// system prompt; this is just the wake signal body. `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(from: &str, body: &str, unread: u64, redelivered: bool) -> String {
     let banner = if redelivered { REDELIVERY_HINT } else { "" };
     let pending = if unread == 0 {
@@ -26,6 +27,7 @@ pub fn format_wake_prompt(from: &str, body: &str, unread: u64, redelivered: bool
 }
 
 /// Current time as a Unix timestamp (seconds). Returns 0 on any error.
+#[must_use]
 pub fn now_unix() -> i64 {
     std::time::SystemTime::now()
         .duration_since(std::time::UNIX_EPOCH)
@@ -37,6 +39,7 @@ pub fn now_unix() -> i64 {
 /// Assemble a `TurnStatRow` from the harness's per-turn state. Used by both
 /// the agent and manager serve loops — the shape is identical, only the
 /// post-turn count fetch helpers differ (and those stay in each binary).
+#[must_use]
 #[allow(clippy::too_many_arguments)]
 pub fn build_row(
     started_at: i64,