Split ReportServ into one file per command

REPORT/LIST/VIEW/CLOSE/DEL each move to their own file; the shared oper
guard stays in lib.rs beside the dispatcher. No behaviour change.

modules/reportserv/src/list.rs

@@ -0,0 +1,20 @@
+use fedserv_api::{Sender, ServiceCtx, Store};
+
+// LIST [ALL]: operators list the open reports (or every report with ALL).
+pub fn handle(me: &str, from: &Sender, arg: Option<&str>, ctx: &mut ServiceCtx, db: &mut dyn Store) {
+    if !super::require_oper(me, from, ctx) {
+        return;
+    }
+    let open_only = !arg.is_some_and(|a| a.eq_ignore_ascii_case("ALL"));
+    let reports = db.reports(open_only);
+    if reports.is_empty() {
+        ctx.notice(me, from.uid, if open_only { "No open reports." } else { "No reports." });
+        return;
+    }
+    for r in &reports {
+        let flag = if r.open { "" } else { " (closed)" };
+        let short: String = r.reason.chars().take(60).collect();
+        ctx.notice(me, from.uid, format!("\x02#{}\x02 {} → \x02{}\x02: {}{}", r.id, r.reporter, r.target, short, flag));
+    }
+    ctx.notice(me, from.uid, format!("{} report(s). \x02VIEW\x02 <id> for detail.", reports.len()));
+}