Captures today's end-to-end closure of the math architecture corridor
(ADR-0163 Phase A → B → C → D + operator ratification, 15 PRs, first
non-zero GSM8K correct count: 0 → 3 with wrong = 0 preserved) and the
workbench surface (W-026 API + ADR-0162 design system + W-027 shell +
W-028 chat surface) becoming operational end-to-end.
Added:
- docs/sessions/SESSION-2026-05-26-corridor-closure.md — full session
ledger, per-fork accomplishments, three lifted GSM8K cases,
unexpected-positive observation about skip-only wiring, deferred
work, architectural state at close.
Updated:
- docs/master-plan-post-substrate-audit.md — 2026-05-26 amendment
banner pointing to the session recap; historical 2026-05-24 plan
preserved below.
- docs/PROGRESS.md — appended a new section capturing the day's 15
PRs by fork (math, workbench, HITL), the first-lift counts, and
what stays open.
- docs/decisions/ADR-0163-gsm8k-path-to-mastery.md — Round 1
amendment with the actual lift evidence, the three lifted cases,
the capability-axis preservation, and the unexpected-positive note
about skip-only wiring doing more than projected.
Scope: docs-only. No runtime, no tests, no code changes.
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