fix: skip PS1 override when Cursor/VSCode shell integration is active

The /etc/profile.d/huggingrun.sh was unconditionally overwriting PS1,
which clobbered the OSC escape sequences that Cursor injects for
command boundary detection, causing "Waiting for output" on all commands.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

entrypoint.py

@@ -460,10 +460,14 @@ def setup_motd():
     sh("chown tao-shen:tao-shen /home/tao-shen/.sudo_as_admin_successful")
 
     # Set PS1 with custom hostname (Docker container hostname is unreadable)
+    # Skip PS1 override when VS Code/Cursor shell integration is active,
+    # as it injects OSC markers into PS1 for command detection.
     profile = (
         '#!/bin/bash\n'
-        'export PS1="\\[\\e[1;32m\\]\\u\\[\\e[0m\\]@\\[\\e[1;36m\\]huggingrun'
+        'if [ -z "$VSCODE_SHELL_INTEGRATION" ]; then\n'
+        '  export PS1="\\[\\e[1;32m\\]\\u\\[\\e[0m\\]@\\[\\e[1;36m\\]huggingrun'
         '\\[\\e[0m\\]:\\[\\e[1;34m\\]\\w\\[\\e[0m\\]\\$ "\n'
+        'fi\n'
     )
     with open("/etc/profile.d/huggingrun.sh", "w") as f:
         f.write(profile)