Replaces the previous contents of this branch, which added editor/OS and
shared-library rules that belong in Global/ per the contributing guidelines.
Two changes remain, both scoped to Julia.gitignore:
* `*.jl.*.mem` — `--track-allocation` writes `<file>.jl.<pid>.mem`, so the
existing `*.jl.mem` rule never matches the files Julia actually produces.
This mirrors the `--code-coverage` section, which already carries both
`*.jl.cov` and `*.jl.*.cov`.
* `.CondaPkg/` — CondaPkg creates this directory inside the active project
and populates it with a machine-specific Conda environment.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
