docs: handoff-80 + docs direct-push carve-out (ADR-0059 Amendment 1)

Session handoff covering the clause-concept-hints feature (ADR-0058, #42) and
the working-method establishment (ADR-0059, #41; fixes #43/#44). Records the
docs direct-push carve-out: handoff/session docs and small docs amendments are
owner-direct-pushed to main, because a docs-only PR posts no ci/gate run
(paths-ignored) and stalls on the required check. Amends CLAUDE.md, ADR-0059
(Amendment 1), and its README index row.

docs/adr/0059-dev-workflow.md

@@ -190,3 +190,26 @@ test the script but not run its pushing path.
 - **Automating PR creation/merge** — humans push and merge (D6).
 - **A CONTRIBUTING-side description of the reserve lock** — it's maintainer
   infrastructure, not contributor guidance (kept here instead).
+
+## Amendment 1 (2026-06-25): docs direct-push carve-out
+
+Extends the D5 owner-whitelist: **handoff / session docs (and small docs
+amendments like this one) are owner-direct-pushed to `main`, not PR'd.**
+
+Discovered while preparing the first handoff under this flow: a **docs-only
+PR cannot merge** under the protection rules. `ci.yaml` `paths-ignore`s
+`docs/**` and `**/*.md`, so a docs-only change posts **no `ci / gate` run**;
+but D5 requires `ci / gate*` before merge — so the required check never
+arrives and the PR stalls on "expected/waiting". Rather than weaken the gate
+or add CI machinery, this trivial low-risk class (handoffs, session notes,
+small docs fixes) rides the existing owner-direct-push carve-out: the owner
+is already whitelisted, and a docs-only push to `main` is itself
+`paths-ignore`d, so it burns no CI.
+
+Substantive changes — code, and the ADRs/docs that accompany code — still go
+through a PR as normal (their non-docs files trigger the gate). **If
+docs-via-PR is ever wanted** (e.g. a docs-only ADR through review), the clean
+fix is a "skipped → success" gate shim (a job that reports `ci / gate`
+success when the real gate is path-skipped) or dropping the docs
+`paths-ignore`; until then, direct-push is the sanctioned path for docs-only
+changes.