OK, first, fix your working space. That fan, vamonos. The 30" space, as illustrated, doesn't need to be centered on the panel.
What you have there is a flush-mount panel, which is the bane of anyone who's ever tried to add a circuit. Lately it's been the fashion to destroy all "utility spaces" in the home. Utilities are important. Utilities place us above the animals.
The Victorians had a simple cure for this contradiction. They would fit a tasteful cabinet door anywhere they needed to access utility spaces. For instance, changing out my tub faucet is utter simplicity, there's a tasteful door there!
So, for long term maintainability, I would advise installing a cabinet door with trim spanning the joist directly above the panel. Then, open the door and very carefully use an appropriate depth-controlled tool to remove the drywall behind the cabinet door. Now you have in-wall access, permanently. I would also back the cabinet door itself with drywall itself to retain the firestop characteristics of that wall.
Now you have permanent and easy access to that wall cavity. Adding a receptacle for the TV is simplicity itself.
You might do the same thing below the panel.
And then, you can put a cabinet door over the panel itself. However it would need to extend beyond the joists. It would need to be sufficiently large that it doesn't interfere with the door opening all the way OR removal of the panel deadfront. And it needs to be thin enough (when open) that the AHJ won't claim it invades the working space.
It's legal to have electrical junction box lids and equipment behind a panel with a latch. If you need to fetch a tool to reach the panel/box, that's a violation.
(you know where the joists are, since the panel is specifically sized to just fit inside a standard 16"-on-center joist bay).