Measures the two planning sessions and plan.md against docs/build-brief.md:
step traceability (0 of 56 unanchored, 15 derived), blocker closure (5 of 9
closed in step text, 4 partial), review-count discrepancies, dedup false
negative reproduced (Jaccard 0.236/0.404 vs 0.7), session token and cost
profile, and whether /trekplan --brief docs/build-brief.md is a valid input
(it is not: FM_MISSING). Recommendation: revise the listed steps first, then
M1 GO. No change to plan.md.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
