Convert all projects to PlatformIO

- JC3636W518 sketches: pioarduino 51.03.05 (Arduino core 3.0.5), ESP32-S3
  16MB QIO / OPI PSRAM, vendor libs via lib_extra_dirs, per-project lv_conf.h
- display_gif_embedded uses default_16MB.csv (firmware 3.4 MB > huge_app)
- elm327_wifi_bridge: espressif32 6.10.0 on esp32dev, pinned lib_deps
- elmulator: library in lib/, one env per example, duplicate copies removed
- .ino -> src/main.cpp, headers/lv_conf.h -> include/

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

10-OBD-Display-2024/elmulator/lib/ELMulator/src/OBDWiFiComm.h

@@ -0,0 +1,78 @@
+#ifndef ELMulator_OBDWiFiComm_h
+#define ELMulator_OBDWiFiComm_h
+
+#include <Arduino.h>
+#include <WiFi.h>
+#include <WiFiServer.h>
+#include "definitions.h"
+
+
+class OBDWiFiComm
+{
+public:
+    enum STATUS
+    {
+        IDLE = 0,
+        READY = 1
+    };
+
+    OBDWiFiComm();
+
+    ~OBDWiFiComm();
+
+    void init(const String &deviceName);
+
+    void writeEndOK();
+
+    void writeEndERROR();
+
+    /**
+     * Response for unsupported PID command or missing sensor, respond "NO DATA".
+     */
+    void writeEndNoData();
+
+    /**
+     * Response for invalid AT command, or invalid PID or other bad input, respond "?"
+     */
+    void writeEndUnknown();
+
+    void setToDefaults();
+
+    void readData(String &rxData);
+
+    void writeTo(uint8_t cChar);
+
+    void writeTo(char const *string);
+
+    void setEcho(bool echo);
+
+    void writeEnd();
+
+    bool isEchoEnable();
+
+    void setLineFeeds(bool status);
+
+    void setMemory(bool status);
+
+    void setWhiteSpaces(bool status);
+
+    void setHeaders(bool status);
+
+    void setStatus(STATUS status);
+
+    void writeEndPidTo(char const *string);
+
+private:
+    STATUS status;     // Operation status
+    bool echoEnable;   // echoEnable command after received
+    bool lineFeedEnable;
+    bool memoryEnabled;
+    bool whiteSpacesEnabled;
+    bool headersEnabled;
+
+    void addSpacesToResponse(const char *response, char string[]);
+
+    WiFiClient client;
+};
+
+#endif