Rename compose.yaml to docker-compose.yml

[nepal-government]

What changed

Contract impact

• No changes to packages/api-contract
• OpenAPI changed — generated client updated and frontend + backend review requested

Checks

• bun run lint
• bun run typecheck
• bun run test (required for apps/api changes)
• bun run api:check
• bun run build

Notes for reviewers

Foundation checklist

• Commits signed off (git commit -s)
• Works in both English and Nepali where applicable
• No secrets or real personal data anywhere in the diff
• Documentation updated; English and Nepali versions agree where both exist