Problem:
The timeout handler raises an error before jobstop(), leaving the
provider probe running after the healthcheck fails.

Solution:
Stop the job before raising the timeout error.

AI-assisted

Problem:
Provider checks start and wait for a job, then execute the same command
again to obtain its output. The returned output can disagree with the
first process's exit status, and the second execution has no timeout.

Solution:
Return the first job's captured output. Bind the output callbacks to
their state and preserve line breaks between callback data entries.
Cover invocation count, multiline stdout, and merged stderr.

AI-assisted

Problem: Argument type mismatches are excluded from EmmyLua checks.

Solution: Correct runtime annotations and calls, document local checker
workarounds, and enable the diagnostic.

AI-assisted

Enable EmmyLua's need-check-nil diagnostic and resolve nullable values
through more precise types, explicit invariants, and guards for missing
runtime state. Keep analyzer-specific workarounds local and update the
affected API documentation.

Exclude the bundled re.lua from analysis so its nil-check warnings do
not fail CI.

AI-assisted

- call-non-callable
- missing-fields
- redefined-label
- redefined-local
- undefined-field
- unreachable-code

Promote redefined-local and unreachable-code to warnings.

Fix DOS line-ending handling for multiline semantic tokens, and support
intersection types in the help parser.

AI-assisted

Problem:
Fallback pynvim version lookup is broken since Vimscript-to-Lua rewrite.
- `vim.fs.basename()` returns the module filename instead of the
  directory needed to discover adjacent metadata. This produces an
  empty metadata list, hiding the remaining issues.
- `table.sort()` requires a Boolean comparator, while
  `vim.version.cmp()` returns a number.
- `table.sort()` sorts in place and returns no value, so assigning its
  result discards the metadata list.

Solution:
- Use `vim.fs.dirname()` to discover adjacent package metadata.
- Use `vim.version.gt()` as the descending Boolean comparator.
- Sort the metadata list in place.
This restores fallback version detection when `neovim.VERSION` is
unavailable.