Looks like it's https://screeps.com/a/#!/room/shard3/W3S35.
Spawns only regenerate energy when the total amount of energy, in all spawns and extensions, is less than 300. Right now, you have exactly 300 energy in your spawns and extensions - five extensions are full with 50 energy each, an extension in the bottom left has 4 energy, and your spawn has 46. That adds up to 300, so energy regeneration stopped.
It's the other way around. Unclaiming the controller (or letting it downgrade to 0) disables power.
From what I can tell, it seems like the way the market will be disabled is just that NPC orders won't be generated. In order to create an order, you need to have some credits, and the only way to get credits is through an order that's already on the market. Without an NPC order to start the cycle, the market won't be active. Is that how it's going to be done?
JavaScript is the primary programming language used for Screeps. However, if you want to use Python, there are some options available - see this post from a few months ago.
For the first one, you can look at Game.cpu.shardLimits. There's a key in there for every shard on the server.
The alpha isn't currently available (the top post says "our current ETA for Closed Alpha is Q1 2021"), but you can preorder it from https://screeps.com/a/#!/arena if you want it at a discount.
To fix that, you'll want to change the type of $roomCache.dismantle.ids. It looks like it's a string[] right now; if so, I think you need to change that to Id<Structure<BuildableStructureConstant>>[].
Id<T> is basically an alias of a string. Usually, you can simply replace string with Id<T> wherever you need to.
For clarification, CARRY parts generate fatigue if and only if there is at least one resource in that part. As an example, if a creep has 3 CARRY parts and is carrying 60 energy, two of the three CARRY parts would generate fatigue. (If you start using boosts, the calculations get a bit more complicated, but the principles are still the same.)
Your calculations are correct, but the time is always rounded up to the next larger whole number. It's more like the ceil() function than rounding. So your creep would be able to move every 2 ticks.