Space multi-line command replies MESH_MULTI_SEND_DELAY_MS apart (v0.21.5)

Production incident: '#rss get lublin' returned an array of lines and
CommandService sent each one back-to-back within the same second — on the real
mesh 3 of 4 items were dropped in RF (the owner saw only the last one).

CommandService.onRx now waits MESH_MULTI_SEND_DELAY_MS (new env, default 5000 =
5 s, read at construction like the other timing knobs) between consecutive
lines of an array reply — no delay before the first line. The delay sits in the
shared per-line loop, so both the respond() path and the legacy sendText
fallback are covered by one await.

src/commands/command.service.ts

@@ -27,6 +27,11 @@ export class CommandService {
     process.env.COMMAND_CHANNEL ?? '2',
     10,
   );
+  // spacing between consecutive multi-line reply messages — back-to-back packets get dropped in RF on a real mesh; each packet needs time to land. Read at construction like the other env config.
+  private readonly multiSendDelayMs = parseInt(
+    process.env.MESH_MULTI_SEND_DELAY_MS ?? '5000',
+    10,
+  );
   // single registration point: the constructor registers every built-in command — add the next one there (or via register())
   private readonly commands = new Map<string, CommandHandler>();
   // prefix handlers own a whole family (`#rss`, `#rss add ...`) instead of one exact name
@@ -83,8 +88,15 @@ export class CommandService {
     try {
       const reply = await handler({ text: trimmed, from, id });
       if (reply === undefined || reply === null) return; // void = no reply
-      // an array reply sends one message per line, all threaded to the same trigger packet id
-      for (const line of Array.isArray(reply) ? reply : [reply]) {
+      // an array reply sends one message per line, all threaded to the same trigger packet id — spaced so each packet has time to land in RF (no delay before the first line)
+      const lines = Array.isArray(reply) ? reply : [reply];
+      for (let i = 0; i < lines.length; i++) {
+        if (i > 0 && this.multiSendDelayMs > 0) {
+          await new Promise((resolve) =>
+            setTimeout(resolve, this.multiSendDelayMs),
+          );
+        }
+        const line = lines[i];
         if (id !== undefined && this.mesh) {
           // respond() auto-routes each line: rides the original record's channel with replyId = id (threaded quote)
           await this.mesh.respond(id, line);