[Bug] mise: lint:shell never runs shellcheck — find rejects the escaped -exec terminator

[laurigates]

What

mise run lint:shell fails immediately without checking a single file:

[lint:shell] $ find . -name "*.sh" -not -path "./node_modules/*" -exec shellche…
find: -exec: no terminating ";" or "+"
[lint:shell] ERROR task failed

The task in private_dot_config/mise/config.toml.tmpl (and the rendered
~/.config/mise/config.toml, line 342) is:

run = 'find . -name "*.sh" -not -path "./node_modules/*" -exec shellcheck {} \;'

The single-quoted TOML literal keeps both backslashes, so find never sees a
bare \; or + terminator.

Why it matters

mise run lint aggregates the sub-linters, so the shell tier is silently
contributing nothing. .claude/rules/testing.md lists mise run lint:shell as
the tier to run after modifying shell scripts — it has not actually been running
shellcheck. The repo's pre-commit shellcheck hook still covers staged files, so
this is a gap in the local tier, not in CI.

Repro

mise run lint:shell

Fix sketch

Either drop one level of escaping (-exec shellcheck {} \;) or switch to
-exec shellcheck {} +, which is also one process instead of N. Verify with a
deliberately broken script that the task actually reports it — an exit 0 on a
sweep that checked zero files looks identical to a clean run.

Provenance

Found while verifying #397; the same line is present on
main, so it is not a regression from that branch.