v2026.2.18

A bug-fix-heavy release focused on task execution reliability, with a new feature for cross-platform tool locking.

### Highlights

- **Auto-lock all platforms after install** — When you install a tool, mise now automatically locks versions for all platforms (not just the current one). This means your `mise.lock` stays complete for teammates on different OSes without needing to run `mise lock` separately. [#8277](https://github.com/jdx/mise/pull/8277)

- **Process group cleanup for tasks** — Task child processes are now managed via Unix process groups, so killing a task reliably takes down the entire process tree instead of leaving orphaned children. [#8279](https://github.com/jdx/mise/pull/8279)

- **`depends_post` tasks run even on failure** — Post-dependency tasks (cleanup, notifications, etc.) now execute even when the parent task fails, matching the expected behavior for teardown-style hooks. [#8274](https://github.com/jdx/mise/pull/8274)

### Bug Fixes

- **Infinite shim recursion on Unix** — `mise exec` now strips its own shims from `PATH` before spawning subprocesses, preventing infinite recursion when a shimmed tool calls itself. [#8276](https://github.com/jdx/mise/pull/8276)
- **`--yes` flag now works for config trust prompts** — The `--yes`/`-y` flag is now properly respected when mise prompts to trust a config file. [#8288](https://github.com/jdx/mise/pull/8288)
- **`--locked --dry-run` validation order** — `mise install --locked` now validates the lock requirement before the `--dry-run` short-circuit, so you get a proper error instead of silent success. [#8290](https://github.com/jdx/mise/pull/8290) by @altendky
- **JSON Schema compatibility** — Replaced `unevaluatedProperties` with `additionalProperties` in the mise JSON schema for broader validator support. [#8285](https://github.com/jdx/mise/pull/8285)
- **Duplicate stderr on task failure** — Fixed tasks in replacing output mode printing error output twice on failure. [#8275](https://github.com/jdx/mise/pull/8275)
- **Did-you-mean for task commands** — Mistyping a CLI subcommand now suggests similar task names. [#8286](https://github.com/jdx/mise/pull/8286)
- **Monorepo prepare steps** — Prepare steps for subdirectory configs now execute from the repository root as expected. [#8291](https://github.com/jdx/mise/pull/8291)
- **`mise upgrade` no longer force-reinstalls** — Previously installed versions are skipped during upgrade instead of being redundantly reinstalled. [#8282](https://github.com/jdx/mise/pull/8282)
- **Terminal restore after `mise watch`** — `watchexec` no longer leaves the terminal in a broken state on exit. [#8273](https://github.com/jdx/mise/pull/8273)

### Documentation

- Clarified that `MISE_CEILING_PATHS` excludes the ceiling directory itself. [#8283](https://github.com/jdx/mise/pull/8283)

### New Contributors

- @altendky made their first contribution in [#8290](https://github.com/jdx/mise/pull/8290)

### 📦 Aqua Registry Updates

#### New Packages (4)

- [`Skarlso/crd-to-sample-yaml`](https://github.com/Skarlso/crd-to-sample-yaml)
- [`kunobi-ninja/kunobi-releases`](https://github.com/kunobi-ninja/kunobi-releases)
- [`swanysimon/markdownlint-rs`](https://github.com/swanysimon/markdownlint-rs)
- [`tmux/tmux-builds`](https://github.com/tmux/tmux-builds)

#### Updated Packages (2)

- [`firecow/gitlab-ci-local`](https://github.com/firecow/gitlab-ci-local)
- [`k1LoW/runn`](https://github.com/k1LoW/runn)