Implement full NFC-URL streaming architecture

- rc522: add NDEF URL reading via WUPA+cascade anticoll+SELECT+TLV parse
- AudioPlayer: route http:// URIs to esp_player_http_music_play()
- CacheManager: download URLs async to /sdcard/cache/{hash}.{ext}
- TagPlayerControl: NDEF URL → cache-or-stream; fallback to UID local mapping
- RFIDInterface: wire ndef_callback, expose combined uid+url callback
- WebInterface: add /api/info, /api/storage, /api/playback, /api/bluetooth
- BluetoothInterface: stub for A2DP speaker mode
- Networking: WiFi connect with 30s timeout instead of blocking forever
- main.cpp: re-enable WiFi + web server, fix init order, add CacheManager
- www/: full SPA — playback controls, device info, storage, BT pairing
- .gitmodules: switch rc522 submodule URL to HTTPS

https://claude.ai/code/session_01MhAnh68DPNnTjcKqjNYDmk

device/main/Networking.cpp

@@ -1,15 +1,26 @@
 #include "Networking.hpp"
 
 #include "WiFi.h"
+#include <esp_log.h>
+
+static const char* TAG = "Networking";
+
+static constexpr int WIFI_TIMEOUT_MS = 30000;
+static constexpr int WIFI_POLL_MS    = 500;
 
 void Networking::connectWifi() {
-	WiFi.begin(CONFIG_ESP_WIFI_SSID, CONFIG_ESP_WIFI_PASSWORD);
+    WiFi.begin(CONFIG_ESP_WIFI_SSID, CONFIG_ESP_WIFI_PASSWORD);
 
-    while (WiFi.status() != WL_CONNECTED) {
-        delay(1000);
-        Serial.println("Waiting for connection...");
+    int elapsed = 0;
+    while(WiFi.status() != WL_CONNECTED && elapsed < WIFI_TIMEOUT_MS) {
+        vTaskDelay(WIFI_POLL_MS / portTICK_PERIOD_MS);
+        elapsed += WIFI_POLL_MS;
+        ESP_LOGI(TAG, "Waiting for WiFi... (%d ms)", elapsed);
     }
 
-    Serial.println("Connected.");
-    Serial.println(WiFi.localIP());
-}
+    if(WiFi.status() == WL_CONNECTED) {
+        ESP_LOGI(TAG, "Connected. IP: %s", WiFi.localIP().toString().c_str());
+    } else {
+        ESP_LOGW(TAG, "WiFi connection timed out — running without network");
+    }
+}