Use git tag versioning via hatch-vcs

- Remove static version from [project]; add dynamic = [version]
- Add [tool.hatch.version] source = vcs
- Add hatch-vcs to build-system requirements

pyproject.toml

@@ -1,9 +1,9 @@
 [project]
 name = "pagerite"
-version = "0.1.0"
 description = "A single-user CMS/blog: FastAPI + kanta, Vue only for editing tools"
 readme = "README.md"
 requires-python = ">=3.14"
+dynamic = ["version"]
 dependencies = [
     "blake3>=1.0.9",
     "fastapi-vue>=1.3.1",
@@ -20,9 +20,12 @@ dependencies = [
 pagerite = "pagerite.__main__:main"
 
 [build-system]
-requires = ["hatchling"]
+requires = ["hatchling", "hatch-vcs"]
 build-backend = "hatchling.build"
 
+[tool.hatch.version]
+source = "vcs"
+
 [tool.hatch.build]
 packages = ["pagerite"]
 artifacts = ["pagerite/frontend-build"]