Fix code review feedback and minor documentation issues

Co-authored-by: Genaker <9213670+Genaker@users.noreply.github.com>

CHANGELOG.md

@@ -130,7 +130,6 @@ No migration needed. Existing code continues to work. To use new features:
 ## Future Improvements
 
 Tracked in GitHub issues:
-- [ ] Add unit tests for `serial_utils.py` validation functions
 - [ ] Add integration tests for serial communication
 - [ ] Create automated memory leak testing for C++ code
 - [ ] Add configuration file support (YAML/JSON) for complex setups

TROUBLESHOOTING.md

@@ -7,7 +7,7 @@
 #### Error: "Unknown board ID"
 **Symptom**: Build fails with `Error: Unknown board ID 'heltec_wifi_lora_32_V3'`
 
-**Solution**: Update your ESP32 Expressif catalog:
+**Solution**: Update your ESP32 Espressif catalog:
 ```bash
 pio pkg update -g -p espressif32
 ```

scripts/rpi-proxy-fc.py

@@ -148,17 +148,21 @@ with MSPy(device=DRONE_PORT, loglevel="WARNING", baudrate=115200) as board:
                 c16 = crc16(line, so_far)
                 if checksum != c16:
                     continue
+                
+                # Parse the scan result
                 try:
                     count, data = parse_line(line)
-                    data.sort()
-                    candidate = get_candidates(data)
-                    osd_text = str2osd(f"{candidate[0]}: {candidate[1]}")
-                    board.send_RAW_msg(INAV_KONRAD_SET_PILOT_NAME, osd_text)
-                    heading = get_heading(board)
-                    lora.write(f"HEADING {heading}\n".encode("utf-8"))
                 except json.JSONDecodeError as e:
                     print(f"Error parsing JSON: {e}")
                     continue
                 except Exception as e:
                     print(f"Error processing scan result: {e}")
                     continue
+                
+                # Process successfully parsed data
+                data.sort()
+                candidate = get_candidates(data)
+                osd_text = str2osd(f"{candidate[0]}: {candidate[1]}")
+                board.send_RAW_msg(INAV_KONRAD_SET_PILOT_NAME, osd_text)
+                heading = get_heading(board)
+                lora.write(f"HEADING {heading}\n".encode("utf-8"))