fix: BLE TX 먹통 해결 및 메모리 안전성 개선

- binary_tx_handler를 dr_binary_tx_safe로 전체 교체 (APP_ERROR_CHECK 제거)
- data_tx_handler APP_ERROR_CHECK → DBG_PRINTF 교체
- memset/memcpy 하드코딩 크기를 define 상수로 교체 (버퍼 오버런 수정)
- SERIAL_NO_LENGTH, HW_NO_LENGTH, PASSKEY_LENGTH를 main.h로 통합
- 미사용 HW 드라이버/EEPROM 코드 삭제, TWI를 i2c_manager.c로 통합
- EEPROM → FDS 전환, 코드 리뷰 현황 문서 추가

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

project/ble_peripheral/ble_app_bladder_patch/main.h

@@ -9,6 +9,13 @@
 #ifndef MAIN_H__
 #define MAIN_H__
 
+/*==============================================================================
+ * DATA LENGTH CONSTANTS
+ *============================================================================*/
+#define SERIAL_NO_LENGTH                12
+#define HW_NO_LENGTH                    12
+#define PASSKEY_LENGTH                  6
+
 #include <stdio.h>
 #include <string.h>
 #include <stdarg.h>
@@ -54,7 +61,6 @@ static void PM_s(void * p_context);
 static void main_routine_handler(void * p_context);
 void received_command_process(uint8_t const *data_array, which_cmd_t cmd_t,uint8_t length);
 void data_tx_handler(char const *p_data_to_send);
-void binary_tx_handler(uint8_t const *ble_bin_buff , uint16_t length);
 void dr_binary_tx_safe(uint8_t const *ble_bin_buff, uint16_t length);
 void dr_sd_delay_ms(uint32_t ms);
 void single_format_data(uint8_t *buffer, const char *tag, const uint16_t value) ;