docs: improve docs

[Andreas-Garcia]

Summary

• Align GitHub metadata and templates to DB Postgres (this repo)
• Replace API/Django-specific templates and labels with Docker/Postgres-focused ones
• Move canonical PR template into .github/pr_descriptions and document usage

Description

These changes adapt the repository's GitHub metadata (labeler rules, PR/issue templates, discussion templates) to the current repository's scope: a Dockerized PostgreSQL image. The prior templates and labels were tailored to the Bodzify API/Django project — this PR reworks them to be relevant to the DB image and to keep a small library of templates in .github/pr_descriptions/.

Related Issue

Type of change

• 📚 Documentation update
• 🔧 Configuration change (labeler, templates, CI guidance)
• ⚠️ Breaking change

Target branch

• main (hotfixes only)
• develop (features, fixes, and routine work)

Changes made

• Updated: .github/labeler.yml to match DB/Postgres project paths and type labels
• Updated: .github/ISSUE_TEMPLATE/* (bug_report, feature_request, engineering_feature) to Docker/Postgres context
• Added: .github/DISCUSSIONS/* templates adapted for DB/Postgres topics
• Added: .github/pr_descriptions/pull_request_template.md (canonical PR template)
• Updated: .gitignore to allow tracking canonical templates and ignore drafts

Testing

Recommended local checks

# Validate YAML files
yamllint .github/labeler.yml
yamllint .github/ISSUE_TEMPLATE/*.yml

# Build image for smoke test
docker build -t bodzify-db-postgres:pr .

# Run a container and check logs
docker run --rm -d --name bodzify-db-pr -e POSTGRES_PASSWORD=test -p 5432:5432 bodzify-db-postgres:pr
docker logs -f bodzify-db-pr

# Optional: verify Postgres reachable from host
docker run --rm --network host postgres:16.4 psql -h localhost -U postgres -c '\l'

docker stop bodzify-db-pr || true

Optional checks

• Dockerfile linting: hadolint Dockerfile
• Security scan: trivy image --severity HIGH,CRITICAL bodzify-db-postgres:pr
• GitHub issue/PR preview: open a draft PR and check template and label behavior

Checklist

• README/CHANGELOG updated (if applicable)
• Labels and templates reflect Docker/Postgres concerns
• Secrets are not present in templates or example commands
• CI includes Docker build/lint/smoke tests for PRs

Breaking Changes

• This PR includes breaking changes
• Migration steps included / documented

Screenshots / Logs (if applicable)

Additional Notes

• The pr_descriptions folder is meant as a template library for contributors. To make a template show automatically in the PR UI, move or copy it to .github/pull_request_template.md or .github/PULL_REQUEST_TEMPLATE/.

Reviewer Notes

• Focus on labeler rules and issues/PR templates matching the intended repo paths. If you'd like both API and DB templates, consider keeping repo-specific templates in distinct files.