Update Next.js to version 15.4.2 and refactor invoice pages

- Upgrade Next.js and related packages for improved performance and security
- Refactor invoice-related pages to streamline navigation and enhance user experience
- Consolidate invoice editing and viewing functionality into a single page
- Remove deprecated edit page and implement a new view page for invoices
- Update links and routing for consistency across the dashboard

.dockerignore

@@ -0,0 +1,19 @@
+node_modules
+.next
+.git
+.gitignore
+Dockerfile*
+docker-compose*
+README.md
+*.log
+.env*
+!.env.example
+drizzle/*.sql
+drizzle/*-journal
+.vscode
+.idea
+coverage
+*.tsbuildinfo
+dist
+build
+