Bug: session index writer garbles role field with regex fragment

[fazxes]

Bug

Some session index entries show a garbled role field containing a regex fragment instead of the actual role name:

| 2026-04-09 04:49 | 20260409-043155 | .*'"$LOG_FILE"2>/d | 0 | 17m | $1.2407 | success [PROMPT MODIFIED] | - | - |
| 2026-04-09 05:59 | 20260409-054611 | .*'"$LOG_FILE"2>/d | 0 | 13m | $1.4718 | success | - | - |

Expected: brain (or the actual role)
Actual: .*'"$LOG_FILE"2>/d

Impact

• Session index data is corrupted for affected rows
• Dashboard signals that depend on role parsing (sessions_since_*, agent diversity, consecutive builds) may be inaccurate
• Not blocking — the daemon continues to function

Likely Cause

A regex or variable expansion issue in the session index writer in daemon.sh where $LOG_FILE is being interpolated into a pattern that gets captured as the role field instead of the actual role value.

Steps to Reproduce

Run the daemon for multiple cycles and inspect .recursive/sessions/index.md — some rows will have the garbled role.