Issue #2 — TryHackMe Intro Room

### 🎯 Goal
Complete TryHackMe room *Intro to Cybersecurity*.

**Tasks**
- [ ] Open and complete the room on THM
- [ ] Take screenshots and notes → `/notes/learning-notes/tryhackme/intro-to-cybersecurity.md`
- [ ] Commit `labs/tryhackme-intro.md` → `closes #6`

**Status:** 🔄 Postponed → Week 2 Milestone  
**Block:** 🕓 Bloc 1 – Deep Study
**Planned for:** Thursday + Friday
