chore: refresh tools branding and patch CI dependencies

README.md

@@ -1,5 +1,10 @@
 # @btravstack/tools
 
+<picture>
+  <source media="(prefers-color-scheme: dark)" srcset="branding/logo-dark.svg" />
+  <img src="branding/logo-light.svg" alt="btravstack tools" width="128" height="128" />
+</picture>
+
 Shared configuration packages for [btravstack](https://github.com/btravstack)
 repositories. Each repo used to hand-copy a near-identical `tools/tsconfig`,
 `tools/typedoc`, oxlint, oxfmt, commitlint, and lefthook setup; this monorepo

branding/README.md

@@ -0,0 +1,12 @@
+# Tools identity
+
+The smiling pink beetroot keeps the approved illustrated style of the
+btravstack family, with green leaves and soft shading; its silver open-end wrench
+has a straight handle and distinct jaws, and identifies the shared build and
+release toolchain. Its hands float independently of its body, without arms. Use `logo-light.svg` on light
+surfaces, `logo-dark.svg` on dark surfaces, and `logo-mono.svg` for grayscale
+print. `social-card.png` is the 1200 × 630 repository preview asset.
+
+Canonical SVG source: [generate-brand.mjs](https://github.com/btravstack/btravstack.github.io/blob/main/scripts/generate-brand.mjs).
+Social source: [social-card.html](https://github.com/btravstack/btravstack.github.io/blob/main/branding/social-card.html), with `?project=tools`.
+These are committed local copies; displaying them requires no external service.