Stamps the 2026-05-21 plan with the SHA of every group's landed
commit. Groups A through T are worked end-to-end across this
session; Group U (EOI bundle UX rework) is the only remaining
parked item with reasoning in its commit.
Per-group commit notes document what shipped fully vs. what stayed
parked within each group (e.g. Q57 recharts→ECharts deferred,
M43 form-template editor UI deferred, O47-O50 marketing-site
phases deferred). Vitest 1454/1454 + tsc clean across all groups.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>