Add: BACnet profile from issue #33

[github-actions]

Automated Profile Evidence

• Issue: [Profile Request] AutomationTest - AQ200 #33
• Evidence level: known-answer
• Model review: single-model
• Supported scope: uplink only
• Hardware verified: no

Sources

• https://raw.githubusercontent.com/RAKWireless/RAK-BACnet-Profiles/develop/automation/examples/AutomationTest-AQ200-protocol.txt (text; SHA-256: 3374e354b3540565b39fe7219e3ff482b1e8eda3c7200bedcfcfb91b44527a9b)
• [Profile Request] AutomationTest - AQ200 #33

Protocol field checks

Message	Field	Offset	Length	Endian	Formula	Citation
air_quality_status	messageType	0	1			Official document: byte offset 0, length 1, message type unsigned integer; supported value is 0xA1.
air_quality_status	co2	1	2	big	raw	Official document: bytes 1-2 are CO2 concentration as unsigned 16-bit big-endian integer in parts per million.
air_quality_status	temperature	3	2	big	raw / 100	Official document: bytes 3-4 are temperature as signed 16-bit big-endian integer; divide raw value by 100 to obtain degrees Celsius.
air_quality_status	humidity	5	2	big	raw / 100	Official document: bytes 5-6 are relative humidity as unsigned 16-bit big-endian integer; divide raw value by 100 to obtain percent.
air_quality_status	batteryLevel	7	1		raw	Official document: byte 7 is battery level as unsigned integer from 0 through 100 percent.
air_quality_status	occupancy	8	1		(statusFlags & 0x01) ? 1 : 0	Official document: byte 8 status flags bit 0 is occupancy; value is 1 when bit is set, 0 otherwise.
air_quality_status	sensorFault	8	1		(statusFlags & 0x02) ? 1 : 0	Official document: byte 8 status flags bit 1 is sensor fault; value is 1 when bit is set, 0 otherwise.

BACnet mapping requested by submitter

- CO2 → AnalogInputObject (partsPerMillion)
- Temperature → AnalogInputObject (degreesCelsius)
- Humidity → AnalogInputObject (percent)
- Battery Level → AnalogInputObject (percent)
- Occupancy → BinaryInputObject
- Sensor Fault → BinaryInputObject

Test coverage

Test	fPort	Payload	Oracle
Example 1	12	A101F408FC11945C01	Known answer
Example 2	12	A104B0FF381B581402	Known answer
Example 3	12	A102EE0C800DAC5000	Known answer

Review findings

• {"severity":"info","summary":"machinePreflight is present and valid.","details":"Preflight reports valid: true, codec contains required functions Decode and decodeUplink, root keys are present, and datatype has 6 channels matching the six decoded values.","location":"machinePreflight"}
• {"severity":"info","summary":"Codec matches the documented payload format.","details":"The decoder requires fPort 12, exactly 9 bytes, and message type 0xA1. It parses CO2 as unsigned 16-bit big-endian at bytes 1-2, temperature as signed 16-bit big-endian at bytes 3-4 with correct two's-complement conversion, humidity as unsigned 16-bit big-endian at bytes 5-6, battery as byte 7, and status flags at byte 8. Scaling by /100 for temperature and humidity matches the documentation.","location":"profileYaml.codec"}
• {"severity":"info","summary":"BACnet datatype mapping matches requested fields, names, units, and object types.","details":"Channels 1-4 are AnalogInputObject with units partsPerMillion, degreesCelsius, percent, and percent. Channels 5-6 are BinaryInputObject with no unit. Names correspond to CO2, Temperature, Humidity, Battery Level, Occupancy, and Sensor Fault.","location":"profileYaml.datatype"}
• {"severity":"info","summary":"Known-answer examples are internally consistent with the decoder.","details":"Example 1 decodes to CO2 500, temperature 23, humidity 45, battery 92, occupancy 1, sensor fault 0. Example 2 decodes to CO2 1200, temperature -2, humidity 70, battery 20, occupancy 0, sensor fault 1. Example 3 decodes to CO2 750, temperature 32, humidity 35, battery 80, occupancy 0, sensor fault 0. These match the documented examples.","location":"fixture.testCases"}
• {"severity":"low","summary":"Decode does not independently revalidate fPort, length, or message type when called directly.","details":"Decode returns [] for invalid fPort, non-array data, wrong length, or wrong message type, but decodeUplink performs explicit validation and returns errors. If a host calls Decode directly with undefined variables, it still safely returns an empty array for invalid inputs. This is not a high-risk issue because the exported wrapper validates input and the fallback behavior is safe.","location":"profileYaml.codec.Decode"}
• {"severity":"info","summary":"No downlink behavior is present, consistent with the documentation.","details":"The document states uplink only and the codec contains only uplink decoding functions. No hidden downlink handling was found.","location":"profileYaml.codec"}

This profile remains verified: false until confirmed on real hardware.

Closes #33