refactor(repo): consolidate openflare-server to root and move subprojects to internal/apps

- Merge all files inside openflare-server to the repository root directory.
- Relocate agent, relay, and flared subprojects from internal/ to internal/apps/.
- Combine docker-compose files and update build context paths to root.
- Update GitHub workflows and Dockerfiles to refer to new directories and package names.
- Rewrite Go package imports across all files.
- Resolve database renew test race condition and clean up docs.

.dockerignore

@@ -1,5 +1,6 @@
 .git
 .idea
+.vscode
 .github
 anubis-source
 **/node_modules
@@ -16,4 +17,19 @@ logs
 .env
 .env.*
 docker-compose*.yml
-
+config.yaml
+bin/
+data/
+uploads/
+s3_cache/
+frontend/node_modules/
+frontend/.next/
+frontend/out/
+frontend/build/
+frontend/disk/
+frontend/.env
+frontend/next-env.d.ts
+frontend/*.tsbuildinfo
+frontend/package-lock.json
+internal/router/dist/
+internal/router/root/dist/