Remove managed student assumptions from Lab 3 terminal

README.md

@@ -25,8 +25,6 @@ The Lab 3 terminal now prefers a runtime-served config artifact at `/courseware-
 Expected fields:
 
 - `lab3TerminalUrl`
-- `lab3Username`
-- `lab3WorkingDirectory`
 
 Local development still falls back to `/wetty`, and `.env.example` keeps that default for simple standalone runs.
 
@@ -34,8 +32,7 @@ The Linux/WSL deployment contract is:
 
 - loopback-only `sshd` on `127.0.0.1:22`
 - WeTTY exposed to the browser on `http://127.0.0.1:7681/wetty`
-- a managed `student` login
-- a working directory at `/home/student/lab3`
+- a standard SSH login prompt that accepts any local account allowed by the host
 
 ## Project Structure