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Julius BrusseeandClaude Fable 5
e9cb8435d6
/caveman-stats credited ALL output tokens since session start to whatever
mode the flag held at stats time: activating caveman late inflated the
estimate (verbose tokens back-computed as compressed), deactivating it
zeroed honest savings — and the wrong number compounded into the lifetime
history and statusline.
The flag files carried no timestamps, so past sessions cannot be exactly
reconstructed. Fix going forward + honest fallback:
- caveman-config: recordModeChange() appends {ts, mode, prev} to
.caveman-mode-log.jsonl on every actual flag transition (deduped,
symlink-safe via appendFlag, best-effort)
- mode tracker + SessionStart activate hook log every flag mutation
(set, off, NL deactivation, one-shot restore, session-start reset)
- caveman-stats joins the log timestamps against the session JSONL
message timestamps and computes savings per mode span; the first
row's prev covers the pre-inception span
- with no log coverage: a flag written mid-session means the earlier
tokens have UNKNOWN mode — they are excluded and labeled, never
guessed (no-fake-savings); with no evidence of a mid-session change,
whole-session attribution stays (correct when the mode never changed)
- history rows, --share, and the statusline suffix all use the
attributed figure; mixed sessions render a per-mode breakdown with
the estimate basis stated
Old inflated history rows cannot be retroactively corrected (the data to
re-attribute them was never recorded).
Tests: mid-session activation (inflation case), mid-session deactivation
(zeroed case), tracker transition-log dedup, unattributable-prefix
exclusion. Checksums manifest refreshed for the four changed hook files.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011kmm2umRGb5nLxdimrwweZ