feat: PipecatVoice native Tactility app — voice gateway companion

Native ELF app (sibling to VoiceRecorder/ReynaBot). Mic/speaker via audio-stream +
I2S (16kHz PCM) + websocket transport (lwip, cJSON). Defaults to Hermes WS
ws://192.168.68.102:8642/api/esp32/voice/ws (voice profile) with Pipecat voice
gateway ws://<mac>:7861 second target. Adapted from ReynaBot PTT + events
(ready/listening/transcript/thinking/response_text/audio_start/audio_end/done).
Cloned ReynaBot websocket.c/h as base.

Apps/PipecatVoice/main/CMakeLists.txt

@@ -0,0 +1,8 @@
+file(GLOB_RECURSE SOURCE_FILES Source/*.c)
+set(CJSON_SOURCE "$ENV{IDF_PATH}/components/json/cJSON/cJSON.c")
+
+idf_component_register(
+    SRCS ${SOURCE_FILES} ${CJSON_SOURCE}
+    INCLUDE_DIRS Source "$ENV{IDF_PATH}/components/json/cJSON"
+    REQUIRES TactilitySDK lwip
+)