setup-project-context

Set up the per-project configuration consumed by the engineering plugin's hooks. SessionStart reads .claude/project-context.json from the project root and injects a <project-context> block (registered project absolute paths + openspec docs folder) into Claude's context at session start.

Steps:

1. Check whether .claude/project-context.json already exists in the current project (read it).

   • If it exists, show its current contents and stop. Tell the user to edit it by hand, and that changes take effect on the next session start.

2. If it does not exist, create .claude/project-context.json with this template (replace the placeholder paths with the user's real absolute paths):