refactor: convert repository to monorepo with npm workspaces

Restructured the repository into a monorepo to better organize application code
and maintenance scripts.

## Workspace Structure
- web-app: Next.js application (all app code moved from root)
- housekeeping: Database backup and maintenance scripts

## Key Changes
- Moved all application code to web-app/ using git mv
- Moved database scripts to housekeeping/ workspace
- Updated Dockerfile for monorepo build process
- Updated docker-compose files (volume paths: ./web-app/etc/hosts/)
- Updated .gitignore for workspace-level node_modules
- Updated documentation (README.md, CLAUDE.md, CHANGELOG.md)

## Migration Impact
- Root package.json now manages workspaces
- Build commands delegate to web-app workspace
- All file history preserved via git mv
- Docker build process updated for workspace structure

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

web-app/app/lib/getProviders.ts

@@ -0,0 +1,28 @@
+import { authConfig } from "./auth";
+
+export type AuthProvider = {
+  id: string;
+  name: string;
+  type: string;
+  style: {
+    logo: string;
+    bg: string;
+    text: string;
+  };
+};
+
+export function getAuthProviders(): AuthProvider[] {
+  const providerKeys: (keyof AuthProvider)[] = ["id", "name", "type", "style"];
+  return authConfig.providers.map((provider) =>
+    getKeyValuesFromObject<AuthProvider>(provider, providerKeys)
+  );
+}
+
+export function getKeyValuesFromObject<T>(obj: any, keys: (keyof T)[]): T {
+  return keys.reduce((acc, key) => {
+    if (obj[key]) {
+      acc[key] = obj[key];
+    }
+    return acc;
+  }, {} as T);
+}