Fix CI: break shim<->main exact-pin lockstep

The `build wheel + sdist` job failed at the `pure-python-git[git]` smoke-install
with ResolutionImpossible: pure-python-git-shim 0.1.0 pinned
`pure-python-git==0.1.0`, which cannot coexist with the current main package.
The main `[git]` extra likewise exact-pinned the shim, so every main release
re-broke the extra.

Replace both exact pins with lower bounds (the shim only registers a `git`
console-script delegating to pythongit.cli:main, so it is version-independent):
- shim: pure-python-git>=0.1.0 (was ==0.1.0), bump 0.1.0 -> 0.1.1
- main `[git]` extra: pure-python-git-shim>=0.1.1 (was ==0.1.0), bump 1.0.0 -> 1.0.1

Verified locally: installing both wheels together resolves, `pygit` and the
`git` shim run, and uninstalling the shim removes `git` while keeping `pygit`.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: blhsing

pure-python-git-shim/pyproject.toml

@@ -4,13 +4,16 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "pure-python-git-shim"
-version = "0.1.0"
+version = "0.1.1"
 description = "Drop-in `git` console-script that delegates to pure-python-git. Install via `pip install pure-python-git[git]`."
 readme = "README.md"
 requires-python = ">=3.9"
 authors = [{ name = "Ben Hsing", email = "blhsing@gmail.com" }]
 license = { file = "LICENSE" }
-dependencies = ["pure-python-git==0.1.0"]
+# Lower bound, not an exact pin: the shim only registers a `git` console-script
+# that calls pythongit.cli:main, so it works with any main-package version.
+# Exact-pinning forced a lockstep that broke the `[git]` extra on every release.
+dependencies = ["pure-python-git>=0.1.0"]
 classifiers = [
     "Development Status :: 4 - Beta",
     "Environment :: Console",

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "pure-python-git"
-version = "1.0.0"
+version = "1.0.1"
 description = "Pure-Python git reimplementation with a byte-exact in-process `ort` merge engine and no C `git` dependency. Installs `pygit`; opt-in `git` shim via `pip install pure-python-git[git]`."
 readme = "README.md"
 requires-python = ">=3.9"
@@ -45,7 +45,7 @@ pygit = "pythongit.cli:main"
 # This pulls in `pure-python-git-shim`, whose only role is to register a `git`
 # console-script that calls pythongit.cli:main. Uninstall the shim with pip
 # to remove the shim without uninstalling the main package.
-git = ["pure-python-git-shim==0.1.0"]
+git = ["pure-python-git-shim>=0.1.1"]
 test = ["pytest>=7"]
 
 [tool.setuptools.packages.find]