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/steven.md

@@ -0,0 +1,38 @@
+---
+type: student-profile
+date: 2026-03-13
+updated: 2026-05-05
+discord: TBD
+role: human-player
+track: human-player
+nickname: "Steven"
+emoji: "🏀"
+status:
+  human-player-training: unknown
+---
+
+# Steven — Student Profile
+
+## Who They Are
+- **Role:** Human Player (2026)
+- **Nickname:** Steven
+- **Emoji:** 🏀 (thinks he's Michael Jordan, looks like short Larry Bird)
+- **Team:** 2026 competition roster
+
+## Training Progress
+
+| Track | Level | Status | Last Updated |
+|-------|-------|--------|--------------|
+| Human Player | Beginner | Unknown | — |
+
+## Notes
+- Human Player during competition matches
+- Stationed at the scoring station for game pieces
+
+## Related Training Hubs
+
+- [[human-player-hub]] — game piece handling, scoring rules
+
+---
+
+*Profile managed by MrC.*