Scaffold hello-world apps, test frameworks, and Gitea CI

- uv workspace tying nisse-core, nisse-dev, nisse-ops together
  (src layouts, workspace-sourced nisse-core dependency)
- Placeholder hello-world entry points for both agents, calling
  through nisse-core to exercise the package boundary
- pytest unit tests per package; integration tests (marker-gated)
  running the installed console scripts as subprocesses
- ruff lint + format, nisse_* declared first-party
- Gitea Actions workflow running lint, format check, unit and
  integration tests; scripts/check.sh mirrors it locally

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

nisse-ops/pyproject.toml

@@ -0,0 +1,16 @@
+[project]
+name = "nisse-ops"
+version = "0.1.0"
+description = "Sysadmin agent: operates infrastructure, driven by tickets, gated on consequences"
+requires-python = ">=3.12"
+dependencies = ["nisse-core"]
+
+[project.scripts]
+nisse-ops = "nisse_ops.main:main"
+
+[tool.uv.sources]
+nisse-core = { workspace = true }
+
+[build-system]
+requires = ["uv_build>=0.12,<0.13"]
+build-backend = "uv_build"

nisse-ops/src/nisse_ops/main.py

@@ -0,0 +1,11 @@
+"""Placeholder entry point for the sysadmin agent."""
+
+from nisse_core.greeting import greeting
+
+
+def main() -> None:
+    print(greeting("nisse-ops"))
+
+
+if __name__ == "__main__":
+    main()

nisse-ops/tests/test_ops_main.py

@@ -0,0 +1,10 @@
+import pytest
+
+from nisse_ops.main import main
+
+
+def test_main_prints_greeting(capsys: pytest.CaptureFixture[str]) -> None:
+    main()
+    assert (
+        capsys.readouterr().out == "Hello from nisse-ops, the house spirit is awake.\n"
+    )