[Broccolito]

Release v1.93.4: the Baseten provider (#416) and its live catalog (#417), on top of current main.

What this release carries

• Baseten as a public declarative provider with 11 bundled models (GLM 5.3 default), prices including cached input, and a keyless daily catalog feed that keeps its model list and prices current. Contributed by Albert Lee at Baseten.
• Everything else merged since v1.93.2 is CI, test or docs only: ci: keep main's Rust caches resident, and size the test job for a cold one #418 (CI caches), docs: call the capability Biorouter Copilot everywhere a person reads it #419 (Biorouter Copilot naming), test(developer): wait for the shell's exec before checking a job's identity #420 (test race), and the README intro.

This PR

One commit, release: v1.93.4: the version bump in the six version files (scripts/release.sh bump 1.93.4) and docs/releases/notes/v1.93.4.md. Version 1.93.3 is skipped on purpose; no 1.93.3 was ever built or tagged.

Release plan

• The Linux and Windows package workflows build this branch; the macOS builds, signing and notarization run locally from this same commit.
• Once the required checks pass, main is fast-forwarded to this commit so the build, CI and tag share one SHA. Then: adopt the CI packages, verify, draft, Windows smoke, publish.
• The website announces the release after it is published, second under the Jupyter Day 2026 entry.

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