Add full Team 2890 roster — all 18 members with profiles

Students:
- fox.md (electrician)
- big-papa.md (student coach)
- jacob-firebreaker019.md (driver, 2026)
- jacob-m-jawarrior.md (programmer)
- ryan.md (operator)
- riley.md (technician) — updated with full profile
- steven.md (human player)
- alex-c.md (mentor, 21yr FRC vet)
- matthew.md (observer)
- kiera.md (team mascot)

Leadership/Mentors:
- gina-nakahara-clark.md (founding teacher)
- mr-douglas.md (programming mentor)
- walt.md (head mentor)
- chris-slater.md (lead coach)
- jackie.md (team mom)
- kp.md (rules guy)

Alumni:
- jacoby-powell.md (alumni/mentor)
- greyson-w.md (alumni/mentor, top coder)

Each profile includes: role, training track, status, emoji nickname, hub links

entities/alex-c.md

@@ -0,0 +1,49 @@
+---
+type: mentor-profile
+date: 2026-03-13
+updated: 2026-05-05
+discord: TBD
+role: mentor
+track: programming
+nickname: "Alex C"
+emoji: "😎🔫"
+status:
+  mentorship: active
+  expertise: expert
+---
+
+# Alex C — Mentor Profile
+
+## Who They Are
+- **Role:** Mentor
+- **Nickname:** "Twinkle Toes Master Laser Gunner"
+- **Emoji:** 😎🔫
+- **Team:** OG — 21 years FRC experience
+- **Mentor for:** Teams 1126, 3181, 9214
+
+## Training Progress
+
+| Track | Level | Status |
+|-------|-------|--------|
+| FRC Programming | Expert | Active mentor |
+| FRC Mechanical | Expert | Active mentor |
+
+## Notes
+- 21 years FRC veteran — helped start multiple teams
+- Known for sitting in corner and "looking pretty" 😎
+- Expert level knowledge — can answer almost any FRC question
+- "OG" — original gangster of FRC mentorship
+
+## Expertise Areas
+- Robot design
+- Programming (multiple FRC languages)
+- Competition strategy
+- Team building
+
+## Related Training Hubs
+- [[programming-hub]] — can serve as mentor resource
+- [[swerve-training-hub]] — can help with advanced swerve questions
+
+---
+
+*Profile managed by MrC.*