refactor: remove dead code, unused exports and redundant dependencies

- drop dotenv (Node 24 process.loadEnvFile) and dompurify (only used by dead code)
- delete unused ui components/hooks (card, progress, checkbox, use-confirm, use-prompt)
- delete dead sanitizeHtml/sanitizeCss, url-security helpers, patch-resume tool,
  schema/page, createResumePatches, patch-proposal preview builder, fonts fallback helpers
- inline single-caller wrappers (flags service, auth getSession, pdf renderer passthrough)
- deduplicate template color helpers into shared/color-helpers
- unexport 50+ internal-only symbols, remove dead export-map entries
- replace hand-rolled unique()/useIsMobile with Set spread and usehooks-ts

apps/web/src/routes/__root.tsx

@@ -5,6 +5,7 @@ import type { Locale } from "@reactive-resume/utils/locale";
 import type { QueryClient } from "@tanstack/react-query";
 import type { orpc } from "@/libs/orpc/client";
 import type { Theme } from "@/libs/theme";
+import { DirectionProvider } from "@base-ui/react/direction-provider";
 import { i18n } from "@lingui/core";
 import { I18nProvider } from "@lingui/react";
 import { IconContext } from "@phosphor-icons/react";
@@ -13,7 +14,6 @@ import { QueryClientProvider } from "@tanstack/react-query";
 import { createRootRouteWithContext, HeadContent, Outlet } from "@tanstack/react-router";
 import { domAnimation, LazyMotion, MotionConfig } from "motion/react";
 import { useEffect, useMemo } from "react";
-import { DirectionProvider } from "@reactive-resume/ui/components/direction";
 import { Toaster } from "@reactive-resume/ui/components/sonner";
 import { TooltipProvider } from "@reactive-resume/ui/components/tooltip";
 import { BreakpointIndicator } from "@/components/layout/breakpoint-indicator";