fix: session-end.js produces empty output because SessionEnd hook doesn't provide transcript_path #331
Description
Bug
Session files in ~/.claude/sessions/ always contain the empty placeholder [Session context goes here] instead of real session content.
Root Cause
session-end.js reads transcript_path from the hook's stdin JSON payload to parse the JSONL transcript. However, it is registered under the SessionEnd hook, which does not provide transcript_path in its payload.
Only the Stop hook provides transcript_path. So session-end.js always receives null for transcript_path and falls back to writing the empty template.
Fix
Move session-end.js from SessionEnd to Stop hook in hooks/hooks.json:
"Stop": [
{ ... },
{
"matcher": "*",
"hooks": [{
"type": "command",
"command": "node \"${CLAUDE_PLUGIN_ROOT}/scripts/hooks/session-end.js\"",
"async": true,
"timeout": 10
}],
"description": "Persist session state after each response (Stop hook has transcript_path)"
}
],
"SessionEnd": [
{
"matcher": "*",
"hooks": [{
"type": "command",
"command": "node \"${CLAUDE_PLUGIN_ROOT}/scripts/hooks/evaluate-session.js\""
}],
"description": "Evaluate session for extractable patterns"
}
]
No changes needed to session-end.js itself — the script logic is correct, only the hook registration is wrong.
Verified
After moving to Stop hook, session files correctly capture user messages, tools used, and modified files.