docs+ci: add PR packaging template + enforce it in CI

[lassebenni]

What I built

Adds a package-complete PR template plus CI enforcement to this assignment repo.

• .github/PULL_REQUEST_TEMPLATE.md: tailored to this week's deliverables, with sections What I built / How to review / How to run / What reviewers should see (expected results) / Known limitations / Self-check. Gives a reviewing mentor a package-complete, reproducible submission.
• .github/workflows/pr-body-check.yml: fails a PR whose description is missing the required headings. GitHub only auto-injects the template in the web compose form / gh pr create without --body; a PR opened via the REST API or --body "..." (the path most AI tools take) skips it silently. This check closes that gap. Editing the PR description re-runs the check automatically (no new commit needed).

How to review

Two added files (one edited on Week 11). Read the template top-to-bottom; the workflow greps case-insensitively for 5 headings.

How to run

No runtime. Verified locally: the filled template passes the check; an empty/free-form body fails and lists the missing headings.

What reviewers should see (expected results)

• Filled template -> check passes (see this PR's own PR body check).
• Blob body -> check fails, lists missing sections.

Self-check

• Template + workflow validated locally against the check logic
• Workflow uses pull_request (not pull_request_target) with contents: read only
• No secrets introduced

🤖 Generated with Claude Code

[github-actions]

📝 HackYourFuture auto grade

Assignment Score: 48 / 100 ❌

Status: ❌ Not passed
Minimum score to pass: 60
🧪 The auto grade is experimental and still being improved

Test Details

=== Week 10 Autograder ===
  ✓ PASS  found dbt_project.yml
  ✓ PASS  found packages.yml
  ✓ PASS  found profiles.yml.example
  ✓ PASS  found macros/safe_divide.sql
  ✓ PASS  found models/staging/_sources.yml
  ✓ PASS  found models/staging/stg_trips.sql
  ✓ PASS  found models/staging/stg_zones.sql
  ✓ PASS  found models/marts/fct_daily_borough_stats.sql
  ✓ PASS  found reports/answers.md
  ✓ PASS  found AI_ASSIST.md
  ✓ PASS  found singular test in tests/
  ✗ FAIL  docs/lineage.png missing -- run dbt docs generate + serve and screenshot the lineage graph
  ✓ PASS  Level 1: required files (0/10 pts)
  ✓ PASS  .gitignore: profiles.yml excluded
  ✓ PASS  profiles.yml.example: uses env_var() -- no hardcoded password
  ✓ PASS  profiles.yml not committed (correctly git-ignored)
  ✓ PASS  Level 2: secrets hygiene (15/15 pts)
  ✓ PASS  stg_trips.sql: uses {{ source() }} reference
  ✗ FAIL  stg_trips.sql: must filter WHERE pickup_location_id IS NOT NULL
  ✗ FAIL  stg_trips.sql: must filter WHERE fare_amount >= 0
  ✗ FAIL  stg_trips.sql: tip_pct column missing -- add {{ safe_divide('tip_amount', 'fare_amount') }} AS tip_pct
  ✓ PASS  stg_zones.sql: uses {{ source() }} and is filled
  ✓ PASS  Level 3: staging models (8/20 pts)
  ✓ PASS  fct_daily_borough_stats.sql: file filled
  ✓ PASS  mart: ref() to both stg_trips and stg_zones
  ✗ FAIL  mart: no JOIN -- must join stg_trips to stg_zones on pickup_location_id = location_id
  ✗ FAIL  mart: no GROUP BY -- must aggregate to (pickup_borough, pickup_date) grain
  ✓ PASS  mart: all 6 required output columns present
  ✓ PASS  Level 4: mart model (12/20 pts)
  ✗ FAIL  mart YAML: missing dbt_utils.unique_combination_of_columns on (pickup_borough, pickup_date)
  ✓ PASS  staging YAML: not_null tests present
  ✓ PASS  singular test: filled (does not reference fct_daily_borough_stats -- check)
  ✓ PASS  Level 5: tests (8/15 pts)
  ✗ FAIL  mart YAML: grain mentioned but description still has TODO -- fill it in
  ✗ FAIL  mart YAML: column descriptions are empty -- explain meaning and units for each column
  ✓ PASS  Level 6: documentation (0/10 pts)
  ✓ PASS  reports/answers.md: 4 SQL blocks present and filled
  ✗ FAIL  AI_ASSIST.md: empty or still contains TODO stubs
  ✓ PASS  Level 7: business answers + AI log (5/10 pts)

Score: 48 / 100  (passing: 60)  pass=false