drift

drift — auto-vs-baseline divergence detection

When to invoke

• Stop hook fires after a meaningful chunk of work (post_task_drift.py).
• User runs /mek-drift.

What it does

1. Loads .mek/drift-baseline.json (created by /mek-drift init).
2. Runs the Python preset auto-scorers: test pass rate, lint, coverage. Security stays manual-only at v0.1.0.
3. Compares to manual baseline. Flags any dimension where:
   • |auto - manual| > divergence_threshold (default 0.15) AND confidence >= min_confidence (default 0.5), OR
   • auto < floor (ratchet violation).

Resolution paths

• /mek-drift accept — agree with auto, update manual to match.
• /mek-drift ack — disagree with auto, dismiss this flag (record in baseline metadata).
• Re-audit manually and update the baseline.

Config

mek.toml > [drift]:

[drift]
baseline_file = ".mek/drift-baseline.json"
preset = "python"
divergence_threshold = 0.15
min_confidence = 0.5
auto_run_on_stop = true