(new): rich message support

(fix): runtime reliability
(tests): regression coverage
(doc): v1.1 release notes

utils/limiter_test.go

@@ -5,6 +5,8 @@ import (
 	"errors"
 	"testing"
 	"time"
+
+	"golang.org/x/time/rate"
 )
 
 func TestRateLimiterCheckDropOverflowHonorsGlobalLock(t *testing.T) {
@@ -28,6 +30,25 @@ func TestRateLimiterChatLocksAreScopedPerChat(t *testing.T) {
 	}
 }
 
+func TestRateLimiterRejectedChatDoesNotConsumeGlobalCapacity(t *testing.T) {
+	rl := NewRateLimiter()
+	rl.SetGlobalRate(1)
+
+	if !rl.Allow(42) {
+		t.Fatal("expected initial request for chat 42 to succeed")
+	}
+	rl.globalMu.Lock()
+	rl.globalLimiter = rate.NewLimiter(1, 1)
+	rl.globalMu.Unlock()
+
+	if rl.Allow(42) {
+		t.Fatal("expected exhausted chat limiter to reject the request")
+	}
+	if !rl.Allow(7) {
+		t.Fatal("expected rejected chat request not to consume global capacity")
+	}
+}
+
 func TestRateLimiterGlobalWaitRespectsContextCancellation(t *testing.T) {
 	rl := NewRateLimiter()
 	rl.SetGlobalLock(1)