silence secondary-bot 429 fallback noise from debug channel

Two paired logWarn calls used to post to DEBUGGING_CHANNEL_ID every time
the RENAMER_BOT secondary token hit Discord's per-channel rename quota:

  Warning: renamer        — "429 rename channel=… retry_after=…"
  Warning: renameQueue    — "secondary-bot 429; falling back to primary…"

Both fire on the recoverable path: the channelQueue immediately falls
back to the primary discord.js client, and that client's REST handler
transparently waits out the retry_after and retries — the rename lands
without operator action. Posting these to the debug channel was pure
noise; staff were reading them as failures when nothing had failed.

Demoted both to console.warn so they still appear in `docker logs
broccolini` for diagnostic purposes but no longer post to Discord.

Kept untouched:
- utils/renamer.js:64 — 401/403 logWarn on secondary-bot auth/permission
  errors (real config problems; the operator does need to know).
- services/channelQueue.js next.catch logError for status 401/403/429 —
  only fires when the fallback itself also failed (rare and worth a
  debug-channel post).

services/channelQueue.js

@@ -25,10 +25,13 @@ async function executeRename(channel, entry) {
       // (403), or no token configured — fall back to the primary Discord.js client.
       // Non-fallback errors rethrow so enqueueRename's catch can classify/log.
       if (err && err.fallback === true && channel && typeof channel.setName === 'function') {
-        logWarn(
-          'renameQueue',
-          `secondary-bot ${err.status ?? 'unavailable'}; falling back to primary channel=${channel.id}`
-        ).catch(() => {});
+        // Local log only; discord.js's REST client transparently handles 429s
+        // on the primary fallback, so this used to post a paired warning to
+        // the debug channel for every secondary-bot quota event with no
+        // operator action required. Keep the visibility in container logs.
+        console.warn(
+          `[renameQueue] secondary-bot ${err.status ?? 'unavailable'}; falling back to primary channel=${channel.id}`
+        );
         await channel.setName(currentName);
       } else {
         throw err;

utils/renamer.js

@@ -41,7 +41,10 @@ async function renameChannel(channelId, newName) {
   if (res.status === 429) {
     const retryAfterSec = (body && typeof body === 'object' && body.retry_after) || null;
     const retryAfterMs = retryAfterSec != null ? Math.ceil(Number(retryAfterSec) * 1000) : null;
-    logWarn('renamer', `429 rename channel=${channelId} retry_after=${retryAfterSec}`).catch(() => {});
+    // Local log only; the channelQueue fallback path handles recovery
+    // transparently via discord.js's built-in 429 retry. Posting these to
+    // the debug channel was non-actionable noise.
+    console.warn(`[renamer] 429 rename channel=${channelId} retry_after=${retryAfterSec}`);
 
     // Respect retry_after up to 2000ms; otherwise fail over immediately.
     if (retryAfterMs != null && retryAfterMs > 0 && retryAfterMs <= 2000) {