Bake 0.4.1

Bake 0.4.1 polishes the terminal and keeps Linux as its only released platform.

• Lists open under the input. The background shells' and agents' lists, one shell's output, and a subagent's details open in a panel under the input bar. The conversation stays in view above it, the selection stays visible on short terminals, and rows out of view are counted.
• Shift+Tab cycles the thinking level of the session's model.
• /model is grouped by provider and then by lab, in natural order, with each model's id beside its name.
• Clearer /login: step titles, the default address as a placeholder that Enter accepts, hints, and a working indicator while the key is checked.
• Easier-to-read transcript: answers are drawn as Markdown with colour, long bash commands and output keep a few rows with a +N count, a running call shows its newest output, and code mode is labelled like the other tools.
• Terminals: Ghostty's Kitty keyboard reporting is supported with balanced cleanup, and Bake reports its activity and the command that restores a saved session to Herdr.
• Settings: a defaultTools list of only + and - entries now changes Bake's default tool set, so code mode, the job tools, and the web tools stay on.
• Windows (not yet released): a killed process tree whose short children reused an ended child's process id now finishes settling instead of waiting forever.
• Repository: the Cargo workspace is at the repository root, and the retired TypeScript agent, Bun tooling, distribution automation, eval runners, and archived evidence are removed. This release is tagged in source only; installers and bake update stay on 0.4.0.

No new binaries. This release is tagged in source only: the release workflow was removed in the repository cleanup, so the installers and bake update keep installing 0.4.0.