fix: increase packet parse/callback budgets to fix Warden module stall

Warden module download (18756 bytes, 38 chunks of 500 bytes) stalled at
32 chunks because the per-pump packet parse budget was 16 — after two
2ms pump cycles (32 packets), the TCP receive buffer filled and the
server stopped sending. Character list never arrived.

- kDefaultMaxParsedPacketsPerUpdate: 16 → 64
- kDefaultMaxPacketCallbacksPerUpdate: 6 → 48

Also adds WARNING-level diagnostic logs for auth pipeline packets and
Warden module download progress (previously DEBUG-only, invisible in
production logs).

src/game/warden_handler.cpp

@@ -380,7 +380,7 @@ void WardenHandler::handleWardenData(network::Packet& packet) {
             std::vector<uint8_t> resp = { 0x00 }; // WARDEN_CMSG_MODULE_MISSING
             sendWardenResponse(resp);
             wardenState_ = WardenState::WAIT_MODULE_CACHE;
-            LOG_DEBUG("Warden: Sent MODULE_MISSING, waiting for module data chunks");
+            LOG_WARNING("Warden: Sent MODULE_MISSING for module size=", wardenModuleSize_, ", waiting for data chunks");
             break;
         }
 
@@ -404,7 +404,7 @@ void WardenHandler::handleWardenData(network::Packet& packet) {
                                      decrypted.begin() + 3,
                                      decrypted.begin() + 3 + chunkSize);
 
-            LOG_DEBUG("Warden: MODULE_CACHE chunk ", chunkSize, " bytes, total ",
+            LOG_WARNING("Warden: MODULE_CACHE chunk ", chunkSize, " bytes, total ",
                      wardenModuleData_.size(), "/", wardenModuleSize_);
 
             // Check if module download is complete