feat(lab1): juice shop deploy + PR template + triage report

[Maflock]

Goal

First lab submission.

Changes

• Added submissions/lab1
• Added .github/PULL_REQUEST_TEMPLATE.md
• Added .github/workflows/lab1-smoke.yml

Testing

docker ps - container running on 127.0.0.1:3000
curl http://127.0.0.1:3000/ - HTTP 200

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Artifacts & Screenshots

• submissions/lab1.md
• .github/PULL_REQUEST_TEMPLATE.md
• .github/workflows/lab1-smoke.yaml

Checklist

• Title is clear (feat(lab1): juice shop deploy + PR template + triage report)
• No secrets/large temp files committed
• submissions/lab1md exists
• Task 1 done — Juice Shop deployed, triage report in submissions/lab1.md
• Task 2 done — .github/PULL_REQUEST_TEMPLATE.md created
• Task 3 done — GitHub stars + follows complete
• Bonus done — lab1-smoke.yml runs green on this PR