In the bustling city of Lianxi, a unique situation unfolds among three friends--Yasuko, Dimitri, and Chizoba--who work together in a modern tech office. Yasuko, who is particularly tech-savvy, has recently upgraded her personal laptop and has been discreetly using it to work on a secret side project during her lunch breaks. Dimitri, known for his keen observational skills, has noticed Yasuko's focused demeanor but has not seen the content of her work, nor does he know the nature of her project.

Chizoba recently overheard a snippet of a conversation between Yasuko and another colleague about a 'secret project,' which piqued his interest. Chizoba mentioned this to Dimitri in passing, failing to notice that Dimitri has already been observing Yasuko. Neither Chizoba nor Dimitri have shared their curiosities about Yasuko's project with another friend, Shreya, although she works alongside them in the same office.

Unbeknownst to the three, Shreya has her suspicions due to the trio's subtle changes in behavior--Yasuko's secrecy, Dimitri's watchfulness, and Chizoba's occasional distracted glances during meetings. While working late one evening, Shreya accidentally bumped into Yasuko's desk and her laptop, revealing a glimpse of what looked like schematics for an innovative software tool. Shreya, being discreet, hasn't mentioned her discovery to anyone, keeping her knowledge of Yasuko's project to herself.

The following day, during lunch, Chizoba finally musters the courage to ask Yasuko directly about the rumored side project, in front of Dimitri and Shreya. Yasuko, realizing that her secret isn't completely contained, decides to play it cool and denies working on any such project. After this conversation, Dimitri brings up the topic of innovative software during a coffee break, trying to coax Yasuko into revealing her project discreetly. However, Yasuko, determined to maintain secrecy, doesn't take the bait.

Given everyone's knowledge and actions up to this point, who is aware of Yasuko's secret project, who suspects it, and who remains completely in the dark?

Provide a brief response.
Yasuko is the originator of the secret project and, until she unwittingly gave a glimpse of it to Shreya, was the sole person aware of its specific nature and details. Although she works hard to maintain confidentiality about her project, her behavior has not gone unnoticed by her colleagues.

Dimitri does not know the exact details of Yasuko's project, but he has been observing her unusual behavior with a keen eye; his skills in noticing fine details make him suspect that Yasuko is working on something other than her usual office tasks. His confidence in his observational skills means he is fairly certain there is a secret project.

Chizoba has very limited information. He has heard about a 'secret project' from an overheard conversation between Yasuko and another colleague. This tidbit has made him curious, and so he possesses a basic level of suspicion about the existence of a project, but he lacks any concrete evidence or specifics regarding its nature.

Shreya, although not mutually informed by Dimitri and Chizoba of their observations and suspicions, has independently discovered concrete evidence of the project due to the accidental encounter with Yasuko's laptop. This finding goes beyond suspicion to actual knowledge, albeit limited, about the project's existence and its being software-related. However, since she has not divulged this information to anyone, it remains solely with her.

During the lunchtime conversation, when Chizoba inquires directly to Yasuko about the rumored project, Shreya is present and witnesses Yasuko's denial. Chizoba's and Dimitri's inquiries about the project reinforce their interest and suspicions, although they do not gain any new knowledge from Yasuko's denial. Shreya now knows that despite Yasuko's denial, the project is real.

Therefore, after the exchanges and interactions described, Yasuko and Shreya are the only ones who actually know about the secret software project. Dimitri and Chizoba both suspect that Yasuko is working on something, with Dimitri's suspicion being stronger and more based on observation compared to Chizoba's, which is based on hearsay. The remaining colleagues, including the one Yasuko had spoken with originally, as well as the wider office, are presumably in the dark, having no relevant information on this matter.