teernisse e994c7a0e8 feat(server): rewrite Codex pane discovery using process inspection ...

Replace the zellij dump-layout approach with direct process inspection
for matching Codex sessions to Zellij panes. The old method couldn't
extract pane IDs from layout output, leaving them empty. The new
approach uses a three-step pipeline:

1. pgrep -x codex to find running Codex PIDs
2. ps eww to extract ZELLIJ_PANE_ID and ZELLIJ_SESSION_NAME from each
   process's inherited environment variables
3. lsof -a -p <pids> -d cwd to batch-resolve working directories

Session-to-pane matching then uses a two-tier strategy:
- Primary: lsof -t <session_file> to find which PID has the JSONL open
- Fallback: normalized CWD comparison

Also adds:
- _codex_pane_cache with 5-second TTL to avoid running pgrep/ps/lsof
  on every dashboard poll cycle
- _dismissed_codex_ids set to track Codex sessions the user has
  dismissed, preventing re-discovery on subsequent polls
- Clearer error message when session lacks pane info for input routing

2026-02-25 11:51:28 -05:00

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