## Summary
Migrates the eight concrete New Guild System gumps (CreateGuild, GuildInfo,
GuildMemberInfo, GuildRoster, GuildDiplomacy, WarDeclaration,
GuildAdvancedSearch, GuildInvitationRequest) and three abstract bases
(BaseGuildGump, BaseGuildListGump, OtherGuildInfo) from the legacy `Gump`
class to `DynamicGump`. Layout work moves from constructor-side `AddX(...)`
calls into `BuildLayout(ref DynamicGumpBuilder builder)` — the abstract
`BaseGuildGump` now provides a `BuildContent` callout for shared
tab-strip chrome, and `BaseGuildListGump<T>` adds another
`BuildListExtras` hook so subclasses can paint highlighted titles after
the filter/sort/pagination chrome.
The headline win is the **self-refresh pattern** on the list gumps and
diplomacy advanced search. Previously each filter/sort/back/forward
click allocated a brand new gump via `GetResentGump`. After migration,
those handlers mutate `_filter`, `_startNumber`, `_comparer`, `_ascending`,
or `_display` on the existing gump and call `from.SendGump(this)`,
letting the singleton path in `NetStateGumps.Send` swap in the same
instance with the new layout. The original list is preserved separately
from the per-render filtered/sorted `_displayList`, so refreshes pick up
the latest state without losing the source list.
All guild gumps deal with per-instance dynamic strings (guild names,
member names, war declarations, alliance names), which would defeat
`StaticGump<T>` caching per the cliloc rule, so every concrete subclass
migrates to `DynamicGump`. `AllianceRosterGump` (in `Misc/Guild.cs`)
is a `GuildDiplomacyGump` subclass and inherits the new behavior; its
unused override and stored alliance reference were dropped along with
the now-obsolete `GetResentGump` abstract.
> [!IMPORTANT]
> **Developer Note**
> THIS IS A BREAKING CHANGE TO THE NEW API GUMP.
> Please give us feedback in [discord ](https://muo.gg/discord) if you have issues, need help, or have ideas for a better API change!
### Summary
* Adds support for size/style to dynamic/static builder.
* Drastically simplifies the dynamic/static builder api for AddHtml.
* Cleans up some legacy gump files.
- [X] Caches DateTime.NowUtc on the game loop (not other threads)
- [X] Replaces all locations where it makes sense
- [X] Adds Min/Max for `IComparable` (TimeSpan, DateTimes, etc)
Closes#261
