(new): PollTimeout config, RateLimiter.Cleanup

(fix): compact payload escape, Draft.push validation, plugin logger ownership, worker StopAndWait, getChatLimiter deadlock, runner ctx-after-tick
(refactor): remove NewPayload, buildSceneKey from sceneRuntime, unify ToJSON fallback
(tests): compact round-trip, Draft.push state, RateLimiter.Cleanup eviction
(doc): changelog v1.0.0 rewrite, NewCommand dual-use godoc

bot_opts_loader.go

@@ -155,7 +155,7 @@ func SaveBotOptsFile(codec BotOptsFileCodec, filename string, opts *BotOpts) err
 	if err != nil {
 		return err
 	}
-	err = os.WriteFile(filename, data, 0644)
+	err = os.WriteFile(filename, data, 0600)
 	if err != nil {
 		return err
 	}