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/fstorage.c

@@ -78,6 +78,9 @@ void fds_default_value_set(void)
 	/* Measurement parameters */
 	m_config.pd_adc_cnt  = 8;
 	m_config.pd_delay_us = 8000;
+
+	/* Device usage count */
+	m_config.life_cycle  = 0;
 }
 
 
@@ -106,19 +109,19 @@ static void fds_evt_handler( fds_evt_t const *p_evt )
 			{
 				fds_flag_write = false;
 
-					if(go_device_power_off == true) {
-						/* After flash writing completed, System Power Off */
-						device_power_off();
-					}
-					if(go_sleep_mode_enter == true) {
-						/* After flash writing completed, System go to Sleep Mode */
-						sleep_mode_enter();
-					}
-					if(go_NVIC_SystemReset == true) {
-						/* After flash writing completed, System Reset */
-						DBG_PRINTF("Off FDS_EVENT\r\n");
-						NVIC_SystemReset();
-					}
+                if(go_device_power_off == true) {
+                    /* After flash writing completed, System Power Off */
+                    device_power_off();
+                }
+                if(go_sleep_mode_enter == true) {
+                    /* After flash writing completed, System go to Sleep Mode */
+                    sleep_mode_enter();
+                }
+                if(go_NVIC_SystemReset == true) {
+                    /* After flash writing completed, System Reset */
+                    DBG_PRINTF("Off FDS_EVENT\r\n");
+                    NVIC_SystemReset();
+                }
 			}
 			break;