## Summary
Converts the five PlayerVendor-related gumps from legacy `Gump` to `DynamicGump` or `StaticGump<T>` using the static `DisplayTo` entry-point pattern.
| Gump | Target | Reason |
|---|---|---|
| `PlayerVendorBuyGump` | StaticGump | Fixed layout; per-instance `Description` and `Price` filled via `BuildStrings` placeholders. |
| `PlayerVendorOwnerGump` | StaticGump | Fixed layout; `HoldGold`, `BankAccount`, `perDay`, `days`, `earthDays` via placeholders. |
| `NewPlayerVendorOwnerGump` | DynamicGump | Layout varies by `goldHeld < perRealWorldDay` and `RentedVendor` branch. |
| `PlayerVendorCustomizeGump` | StaticGump | Categories-driven fixed layout. **Dropped unused `Mobile from` constructor arg** since it's only used in `OnResponse` (where `state.Mobile` is available). |
| `NewPlayerVendorCustomizeGump` | DynamicGump | BEARD section depends on `vendor.Female`. |
All builder slots and labels use `$"{value}"` interpolated-string-handler form for zero-allocation text. Inner `PVHuePicker` / `PVHairHuePicker` (HuePicker derivatives) are unchanged.
Updates callers in `PlayerVendor` and `PlayerBarkeeper`.
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| .. | ||
| Application | ||
| BuildTool | ||
| Logger | ||
| Server | ||
| Server.Tests | ||
| UOContent | ||
| UOContent.Tests | ||