docs: reconcile docs after ci+website merges; gitignore wrangler/vscode

Post-merge documentation accuracy pass (CI and website branches both
merged to main; website deployed).

- CLAUDE.md: rewrite the stale repository-layout tree; add a Website &
  docs-site decision bullet (Astro+Starlight, Cloudflare Pages via Gitea
  Actions, ADR-website-001, the website branch stays open); update the CI
  note (merged to main; release-macos dispatchable + verified working).
- requirements.md: D1 — macOS targets now runtime-verified (release-macos
  dispatched end-to-end); DOC1 — canonical user docs now live on the
  deployed website.
- ADR-ci-003 (+ docs/ci/adr README): Amendment 2 — CI on main,
  release-macos dispatched + verified; macOS runtime-verified.
- docs/website/adr README: drop the stale "no CI yet".
- .gitignore: ignore .wrangler/ (Cloudflare Wrangler cache) and .vscode/;
  remove the tracked website/.vscode/ an Astro template had added.

D3 (package-manager manifests) + some install instructions remain open.

docs/ci/adr/20260613-adr-ci-003.md

@@ -20,6 +20,17 @@ This ADR records the **cross-platform build strategy**; it sits on top of
 **ADR-ci-002** (the nix flake, which now carries the cross toolchain) and
 **ADR-ci-001** (the pipeline, whose release job this fills in).
 
+## Amendment 2 — 2026-06-16: CI on `main`; `release-macos` dispatched + verified
+
+The CI branch is **merged to `main`**, so `release-macos.yaml`
+(`workflow_dispatch`, Gitea-default-branch-only) is now triggerable. It
+has been **dispatched and verified end-to-end**: both `*-apple-darwin`
+targets build on the Tart runner, the de-nix/re-sign step runs, the
+assets upload to the tagged release, and the binaries launch. macOS is
+therefore runtime-verified (alongside the original Linux x86_64 +
+Windows aarch64); only **Linux aarch64** and **Windows x86_64** remain
+link-clean / valid-format without a runtime smoke-test.
+
 ## Amendment — 2026-06-14: macOS implemented (closes D1)
 
 macOS is no longer deferred. The two `*-apple-darwin` targets now build on a