JUMPSCARE ALERT, JUMPSCARE ALERT, JUMPSCARE ALERT and it's a shame you didn't put a warning anywhere. We're not in a "horror-themed" jam, we don't expect anything like that, and it can be a very, very unpleasant surprise when you tease a mystery and just throw a stupid jumpscare in our faces as only explanation. And yes, you mention some "face with static" and the logs are more and more scared, but I just thought it was part of the mystery.
Ok, now, I calm down, and I proceed to write the *real* review, without that f-ing ending xD.
I really enjoyed the base idea of a character that escapes its game and wander into Windows ^^. The log idea is great, and like the logic of the puzzle (but I feel like I skipped some steps, because I never used the C# code or log 4, I just entered the data in the browser things and it got me the code that I mirrored).
The interactions with the Windows elements are top-notch: mixing "Windows" and platforming is a really neat idea. The "paint" part is genius, the "chat" part is really nice, and overall, I liked to use the logs as platforms and elevators =p.
The graphics, sound design and general ambiance is really good and very polished. The story is also very engaging, even if I would have liked a real ending with an explanation about this mysterious file (I expected a twist like "we are helping a virus escaping quarantine without knowing it" =p) (Note: I closed my browser the second you-know-what happened, so maybe I missed something after).
Overall, this is a very solid entry and I enjoyed playing it! And I'm honestly impressed you did all that alone and in one week, so congratulations ^^! Keep up the good work =).