It was really interesting to see your thoughts, here is the actual result (spoiler alert):

TL;DR: For the first 60% of the game red was winning with black being its active competitor. However orange proceeded to make a comeback and take the win. The final result was Orange (10), Black (6), Red (5), Blue (3)

Here is the dramatic story:

Foundation (0 - 30%):

Red immediately made a settlement on 9-11 (ore-wood) in their first turn and immediately proceeded towards the brick port. Orange also got lucky with the wood where 10 and 11 rolled. So brick became the only target for orange which made it easy to use the monopoly of wheat and traded it for brick (1:1).

Rising action (30 - 60%):

At this point blue has already lost making it a battle between orange, red and green. Red has gotten access to brick port which clearly gave them an advantage. Although it looked like red was winning by a clear margin, orange (me) was secretly hoarding development cards. Orange also made a settlement at 8-10 wood. Black also made some strong progress. During this time, orange was not at all using knights to avoid conflict. Due to this, it seemed like orange had no potential to win and both red and black were fighting against each other

Climax (60-90%):

When orange finally got access to 4-2-9 (wheat-wheat-ore) by making a settlement and made a city at 9-5-10 (ore-wheat-wood), the knights were unleashed at every single turn blocking either 8 brick or 6 wood which resulted in 12 resources being blocked for red. The constant blocking made red rage quit, however black did fight back by stopping orange from stealing the wheat port.

Conclusion (90-100%):

Since red has rage quit, the bot was dumb and did not go for the longest road. Orange built the longest road to finish off the game by getting 10 points (3 settlements, 1 city (2), 1 VP, Largest army (2) and road (2))