A Final Update
Too Long; Didn't Read (TL;DR): No warranty returned, but the car was thoroughly inspected by Tesla. Big thumbs up to Tesla for their support.
After a year of trying to get some clarity, I decided to reach out through some engineer contacts at Tesla to the right department, and I managed to get through. I connected with a fantastic guy named Aaron who helped me understand everything. Unfortunately, I didn't get the answers to what happened with my car as it's corporate secret and they can't disclose it. However, Tesla completely covered the cost of a High Voltage battery test and the inspection needed for Supercharger access. They were super courteous and communicative, and helped with everything they could without breaking corporate rules. Thanks Lake Forest service center!
Despite dealing with a large corporation like Tesla, the key takeaway from my experience is to thoroughly research and verify dealers before making any purchase. The dealership that sold me the car, Prime Sales, ended up closing down six months after my purchase, and some others fell for their "scam" (?) as well. (When I first arrived in the U.S., I didn't have a Social Security number yet and chose to deal with sellers who spoke my native language to make the process easier, which is why I didn't go directly to Tesla.)
Big thanks to Tesla and everyone who responded in this thread. My advice? Buy directly from Tesla and avoid dealers. That was my mistake, and I fully own it. I hope others can learn from this and steer clear of the bad guys.
P.S. For those interested in more details, either Tesla's insurance or Tesla itself recognized the car as "salvaged" while it still had a Clean Title, before it was put up for auction.
Lesson learned
Buy used from Tesla, Carmax, or other reputable dealer
Don’t believe Carfax or the dealer only on of the title is clean
Always perform due diligence