init: DLD154Pro 单线圈蓝牙车检器，从 DLD110SV4 复制初始代码和文档

.gitignore

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+# Build output directories (MRS/Eclipse auto-generated)
+obj/
+
+# Prerequisites / object files
+*.d
+*.o
+*.ko
+*.obj
+*.elf
+*.map
+*.lst
+*.su
+
+# Firmware artifacts (rebuildable)
+*.hex
+*.bin
+*.BIN
+
+# BLE ROM library & prebuilt lib must stay tracked
+!BLE/LIB/*.hex
+!BLE/LIB/*.a
+
+# IDE / misc
+*.launch.bak
+*.old
+*.TMP
+
+# root-owned upload backups (pending sudo cleanup)
+*.rootowned_bak/