fix(backthink): 主动推送降频(15min心跳+60min≤1次+推后30min冷却+刚聊过10min冷避) + 情绪约束(分类限频/活跃感知) + 剥离'我决定:push'内部标记

internal/services/backthink/backthink_test.go

@@ -33,6 +33,35 @@ func TestNew_Validation(t *testing.T) {
 	}
 }
 
+// TestConfig_Defaults verifies the tightened proactive-push defaults: a 15-minute
+// heartbeat, at most 1 push per 60 minutes, a 30-minute post-push cooldown, a
+// 10-minute recent-conversation cooldown, and a 2-hour per-flavor window.
+func TestConfig_Defaults(t *testing.T) {
+	t.Parallel()
+	cfg := normalize(Config{})
+	if cfg.IntervalSec != 900 {
+		t.Fatalf("IntervalSec = %d, want 900", cfg.IntervalSec)
+	}
+	if cfg.Interval != 900*time.Second {
+		t.Fatalf("Interval = %v, want 900s", cfg.Interval)
+	}
+	if cfg.PushLimit != 1 {
+		t.Fatalf("PushLimit = %d, want 1", cfg.PushLimit)
+	}
+	if cfg.PushWindow != 60*time.Minute {
+		t.Fatalf("PushWindow = %v, want 60m", cfg.PushWindow)
+	}
+	if cfg.PushCooldown != 30*time.Minute {
+		t.Fatalf("PushCooldown = %v, want 30m", cfg.PushCooldown)
+	}
+	if cfg.RecentChatCooldown != 10*time.Minute {
+		t.Fatalf("RecentChatCooldown = %v, want 10m", cfg.RecentChatCooldown)
+	}
+	if cfg.KindWindow != 2*time.Hour {
+		t.Fatalf("KindWindow = %v, want 2h", cfg.KindWindow)
+	}
+}
+
 func TestBackthink_Heartbeat_TriggersThink(t *testing.T) {
 	t.Parallel()
 	thinker := &mockThinker{text: "nothing to report"}