feat: ESP32-S3 双核并行摄像头系统 (AsyncUDP + ESP-NOW)

- 主程序: src/main.cpp - AP模式摄像头推流 + AsyncUDP中断通讯
- 通信模块: UDPPeer类 (UDP + ESP-NOW双通道, Flash配置持久化)
- 参考实现: ESPNOW通讯 / bkespnow版本 / 普通连接版本
- clangd配置: --target=arm-none-eabi + __XTENSA__宏 + 工具链sys-include
- 硬件: ESP32-S3-WROOM-1-N16R8 + OV2640, 16MB Flash, Octal PSRAM

jxbeye/.clangd

@@ -0,0 +1,34 @@
+CompileFlags:
+  Compiler: /home/fallensigh/.platformio/packages/toolchain-xtensa-esp32s3/bin/xtensa-esp32s3-elf-g++
+  Add:
+    - -D__XTENSA__
+    - -D__xtensa__
+    - -D__XTENSA_EL__
+    - -D__XTENSA_WINDOWED_ABI__
+    - --target=arm-none-eabi
+    - -Wno-unknown-warning-option
+    - -isystem/home/fallensigh/Dev/craic/jxbeye/clangd_compat
+    - -isystem/home/fallensigh/.platformio/packages/toolchain-xtensa-esp32s3/xtensa-esp32s3-elf/include/c++/8.4.0
+    - -isystem/home/fallensigh/.platformio/packages/toolchain-xtensa-esp32s3/xtensa-esp32s3-elf/include/c++/8.4.0/xtensa-esp32s3-elf
+    - -isystem/home/fallensigh/.platformio/packages/toolchain-xtensa-esp32s3/xtensa-esp32s3-elf/include/c++/8.4.0/backward
+    - -isystem/home/fallensigh/.platformio/packages/toolchain-xtensa-esp32s3/lib/gcc/xtensa-esp32s3-elf/8.4.0/include
+    - -isystem/home/fallensigh/.platformio/packages/toolchain-xtensa-esp32s3/lib/gcc/xtensa-esp32s3-elf/8.4.0/include-fixed
+    - -isystem/home/fallensigh/.platformio/packages/toolchain-xtensa-esp32s3/xtensa-esp32s3-elf/sys-include
+    - -isystem/home/fallensigh/.platformio/packages/toolchain-xtensa-esp32s3/xtensa-esp32s3-elf/include
+  Remove:
+    - -mlongcalls
+    - -fstrict-volatile-bitfields
+    - -fno-tree-switch-conversion
+    - -mno-speculative-load-hardening
+    - -fno-split-wide-types
+    - -fbranch-target-load-optimize2
+    - -fno-jump-tables
+    - -freorder-blocks
+    - -fstack-protector
+
+Diagnostics:
+  UnusedIncludes: Strict
+  Suppress:
+    - drv_unknown_argument
+    - drv_unknown_argument_with_suggestion
+    - fatal_too_many_errors