Add breakdowns to the build side bar on mouseover

[vaisest]

Description of the problem being solved:

This adds the calc tab breakdowns to the build side bar. This is sort of inspired by poe.ninja.

The breakdowns seem to work quite well, but I think this looks quite busy, and I'll welcome opinions on whether or not this needs visual changes or not. Feedback received. I toned down the underlining a bit. Optimally I think we should remove this later, but it's good to have now to teach users that this actually exists. TPlant also mentioned a small diamond icon. It doesn't seem like something PoB or PoE has used before, but that could work too.

I also don't have perfect knowledge on what all the calcs stuff means. For example I have no clue what omniscience is, or why the off-hand breakdowns would be relevant.

The breakdowns are indexed based on their names from CalcSections, and in most cases the BuildDisplayStats stat names are used to look up the breakdown. This is not always possible and thus I added a breakdown string? field to the display stats to force a breakdown if e.g. the name is different. There's also a modNames string[]? field for defining mod lists if, for example, the breakdown doesn't have any mod lists in the cell (e.g. Life). These exceptions have to be manually fixed.

One problem with this approach is that if multiple cells have the same breakdown, we might get a bad match, like what happens with armour/ev/es. For these it's better to just ignore the breakdown and to add modnames manually.

I have fixed most stat displays, and made sure that minions work. One issue was that the main env doesn't contain breakdowns. This was fixed by generating them for the main env, and I'm not sure how bad that is. I'd assume the breakdowns were restricted to "CALCS" for a reason.

Pinning is supported (not the popup but like left clicking a cell).

Steps taken to verify a working solution:

• Nothing crashes
• Most relevant breakdowns work
• Pinning works

Link to a build that showcases this PR:

Minions: https://poe.ninja/poe1/pob/96cb6

Totems: https://poe.ninja/poe1/pob/96cb7

Mamba: https://poe.ninja/poe1/pob/96cb9

Worb: https://poe.ninja/poe1/pob/96cba

Before screenshot:

After screenshot:

Path.space.of.space.Building_2026-08-11_19-12-42.mp4

[cupkax]

The underlines do make it look a tad busy. Would making the calc specific numbers/terms bolder work here?

Other option could be to keep the underline just for the keywords?

[Blitz54]

Also agree the underlines are a little busy. Would it be possible/better if they were dashed like in poe2? Or maybe just the numbers and not the text, or the text but not the numbers.

[vaisest]

I removed the left side underlines and made it slightly darker. Clickbox is still the same, but I think this is a bit cleaner?

[cupkax]

What do you think of something like this?

[vaisest]

What do you think of something like this?

We came to sort of a conclusion on Discord (if you're not there as a contributor, ask local) that it's probably best to keep the underlining for a short period and then we can remove it completely once users are more familiar with it

[cupkax]

Ah, gotcha. No worries. @LocalIdentity can I get an invite to the discord if possible?

[LocalIdentity]

@cupkax send me a friend req or message on discord (Localidentity) and I’ll inv you