Lint, typecheck and markdown lint (T12, T13): de-cluttering the control plane UI

Run at verification on 2026-10-20 on branch issue-511-declutter-control-plane.

Lint

text

cd ui && bun run lint
$ oxlint --type-aware
(no findings; exit 0)

tsc --noEmit runs as the first half of bun run build — see build.md; it reported no error.

text

npx --yes markdownlint-cli2@0.18.1 "**/*.md"
markdownlint-cli2 v0.18.1 (markdownlint v0.38.0)
Linting: 1764 file(s)
Summary: 0 error(s)

Covers the spec chain under docs/specs/issue-511/, docs/decisions/decision-148.md, ui/README.md and docs/capabilities/control-plane.md.