feat: extract groombook/web from monorepo

- Copy apps/web/ with all src, components, pages, portal
- Inline packages/types/ as local packages/types module
- Add tsconfig path aliases for @groombook/types
- Port Dockerfile and CI workflow
- Image name: ghcr.io/groombook/web

Co-Authored-By: Paperclip <noreply@paperclip.ing>

src/BrandingContext.tsx

@@ -0,0 +1,68 @@
+import { createContext, useContext, useEffect, useRef, useState, useCallback } from "react";
+
+export interface Branding {
+  businessName: string;
+  primaryColor: string;
+  accentColor: string;
+  logoUrl: string | null;
+  logoBase64: string | null;
+  logoMimeType: string | null;
+}
+
+const DEFAULT_BRANDING: Branding = {
+  businessName: "GroomBook",
+  primaryColor: "#4f8a6f",
+  accentColor: "#8b7355",
+  logoUrl: null,
+  logoBase64: null,
+  logoMimeType: null,
+};
+
+const BrandingContext = createContext<{
+  branding: Branding;
+  refresh: () => void;
+}>({ branding: DEFAULT_BRANDING, refresh: () => {} });
+
+export function useBranding() {
+  return useContext(BrandingContext);
+}
+
+export function BrandingProvider({ children }: { children: React.ReactNode }) {
+  const [branding, setBranding] = useState<Branding>(DEFAULT_BRANDING);
+  const metaThemeColorRef = useRef<HTMLMetaElement | null>(null);
+
+  const fetchBranding = useCallback(() => {
+    fetch("/api/branding")
+      .then((r) => (r.ok ? r.json() : null))
+      .then((data) => {
+        if (data && typeof data.businessName === "string") setBranding(data);
+      })
+      .catch(() => {});
+  }, []);
+
+  useEffect(() => {
+    fetchBranding();
+  }, [fetchBranding]);
+
+  // Apply CSS custom properties whenever branding changes
+  useEffect(() => {
+    document.documentElement.style.setProperty("--color-primary", branding.primaryColor);
+    document.documentElement.style.setProperty("--color-accent", branding.accentColor);
+    // Keep PWA theme-color meta tag in sync with primary color
+    if (!metaThemeColorRef.current) {
+      metaThemeColorRef.current = document.querySelector<HTMLMetaElement>("meta[name='theme-color']");
+      if (!metaThemeColorRef.current) {
+        metaThemeColorRef.current = document.createElement("meta");
+        metaThemeColorRef.current.name = "theme-color";
+        document.head.appendChild(metaThemeColorRef.current);
+      }
+    }
+    metaThemeColorRef.current.content = branding.primaryColor;
+  }, [branding.primaryColor, branding.accentColor]);
+
+  return (
+    <BrandingContext.Provider value={{ branding, refresh: fetchBranding }}>
+      {children}
+    </BrandingContext.Provider>
+  );
+}