wire reminder ops into the in-agent socket dispatch (#2635 inc 1)

hive-agent/src/reminders.rs

@@ -43,6 +43,7 @@ pub struct Reminder {
     pub message: String,
     pub file_path: Option<String>,
     pub due_at: i64,
+    pub created_at: i64,
 }
 
 /// The harness-local reminder store. Cheap to share behind an `Arc`; the
@@ -121,7 +122,7 @@ impl Reminders {
     pub fn list_pending(&self) -> Result<Vec<Reminder>> {
         let conn = self.conn.lock().unwrap();
         let mut stmt = conn.prepare(
-            "SELECT id, message, file_path, due_at \
+            "SELECT id, message, file_path, due_at, created_at \
              FROM reminders WHERE sent_at IS NULL ORDER BY due_at ASC",
         )?;
         let rows = stmt
@@ -143,7 +144,7 @@ impl Reminders {
     pub fn due(&self, now: i64, limit: u64) -> Result<Vec<Reminder>> {
         let conn = self.conn.lock().unwrap();
         let mut stmt = conn.prepare(
-            "SELECT id, message, file_path, due_at \
+            "SELECT id, message, file_path, due_at, created_at \
              FROM reminders WHERE sent_at IS NULL AND due_at <= ?1 \
              ORDER BY due_at ASC LIMIT ?2",
         )?;
@@ -262,6 +263,7 @@ fn row_to_reminder(row: &rusqlite::Row) -> rusqlite::Result<Reminder> {
         message: row.get(1)?,
         file_path: row.get(2)?,
         due_at: row.get(3)?,
+        created_at: row.get(4)?,
     })
 }
 
@@ -351,7 +353,9 @@ mod tests {
         assert_eq!(n, 1, "only the backdated row is older than cutoff");
         let remaining_ids: Vec<i64> = {
             let conn = s.conn.lock().unwrap();
-            let mut stmt = conn.prepare("SELECT id FROM reminders ORDER BY id").unwrap();
+            let mut stmt = conn
+                .prepare("SELECT id FROM reminders ORDER BY id")
+                .unwrap();
             stmt.query_map([], |row| row.get(0))
                 .unwrap()
                 .collect::<rusqlite::Result<Vec<_>>>()