refactor(core): cleanup unused code and improve type safety

Refactor the codebase to remove obsolete logic, improve TypeScript strictness, and clean up configuration.

- Remove unused `createSettingsFromTemplate` and `compareVersions` functions
- Remove unused `MIMO_TOKEN_REGIONS` import
- Remove deprecated `baseUrl` from `tsconfig.json`
- Add explicit type annotations to CLI choices and Ink component callbacks
- Improve null safety in `changelog.ts` parser and `AddInstance` wizard
- Add global declarations for `Bun` and `Deno` in runtime utilities
- Simplify plugin modification logic in `ManagePlugins` screen

Author: hmziqrs

scripts/capture-screens.tsx

@@ -334,7 +334,7 @@ const screens: Record<string, React.ReactElement> = {
 };
 
 // 256-color palette (Catppuccin Mocha theme)
-const COLOR_256: string[] = new Array(256);
+const COLOR_256: string[] = Array.from({ length: 256 });
 const palette16 = [
   "#555","#e06c75","#98c379","#e5c07b","#61afef","#c678dd","#56b6c2","#abb2bf",
   "#636d83","#e06c75","#98c379","#e5c07b","#61afef","#c678dd","#56b6c2","#cdd6f4",