Hook paths in .claude/settings.json break on project move

[lhparker1]

What happened

After relocating a Prism project on disk, the langfuse hooks written into .claude/settings.json still point at the old absolute path. The PreToolUse hook (langfuse_session_init_hook.py) then fails on every tool invocation, which blocks the entire session (including the Skill tool, so /prism-feedback itself cannot run). Recovery requires editing settings.json from outside Claude Code.

Reproduction

1. prism new <project> (or prism init) in dir A.
2. Move the project to dir B (e.g. reorganize into a subfolder).
3. Start Claude Code in dir B. Every tool call fails with:
   python3: can't open file '<dir A>/.claude/hooks/langfuse_session_init_hook.py'

Suggested fix

Write hook paths as ${CLAUDE_PROJECT_DIR}/.claude/hooks/... (or resolve relative to the project root at runtime) instead of hard-coding absolute paths at project creation time.

Environment

• ASTRA: 0.1.2
• Prism: 0.1.2.dev23+g2897ae8b9
• Python: 3.13.11
• OS: Linux 6.4.0-150600