refactor: Separate runtime from build. Enhance configuration and registry management, migrate to registry-based component handling

core/tests/conftest.py

@@ -18,10 +18,12 @@ def castle_root(tmp_path: Path) -> Generator[Path, None, None]:
         "components": {
             "test-svc": {
                 "description": "Test service",
+                "source": "test-svc",
                 "run": {
                     "runner": "python_uv_tool",
                     "tool": "test-svc",
-                    "working_dir": "test-svc",
+                },
+                "defaults": {
                     "env": {"TEST_SVC_DATA_DIR": str(tmp_path / "data" / "test-svc")},
                 },
                 "expose": {

core/tests/test_config.py

@@ -62,7 +62,7 @@ class TestLoadConfig:
         svc = config.components["test-svc"]
         assert svc.run.runner == "python_uv_tool"
         assert svc.run.tool == "test-svc"
-        assert svc.run.working_dir == "test-svc"
+        assert svc.source == "test-svc"
 
     def test_tool_no_run(self, castle_root: Path) -> None:
         """Tool without run block has no run spec."""

core/tests/test_manifest.py

@@ -33,9 +33,7 @@ class TestRoleDerivation:
         m = ComponentManifest(
             id="svc",
             run=RunPythonUvTool(runner="python_uv_tool", tool="svc"),
-            expose=ExposeSpec(
-                http=HttpExposeSpec(internal=HttpInternal(port=8000))
-            ),
+            expose=ExposeSpec(http=HttpExposeSpec(internal=HttpInternal(port=8000))),
         )
         assert Role.SERVICE in m.roles
 
@@ -117,9 +115,7 @@ class TestRoleDerivation:
         m = ComponentManifest(
             id="multi",
             run=RunPythonUvTool(runner="python_uv_tool", tool="multi"),
-            expose=ExposeSpec(
-                http=HttpExposeSpec(internal=HttpInternal(port=8000))
-            ),
+            expose=ExposeSpec(http=HttpExposeSpec(internal=HttpInternal(port=8000))),
             install=InstallSpec(path=PathInstallSpec(alias="multi")),
         )
         assert Role.SERVICE in m.roles
@@ -130,9 +126,7 @@ class TestRoleDerivation:
         m = ComponentManifest(
             id="svc",
             run=RunPythonUvTool(runner="python_uv_tool", tool="svc"),
-            expose=ExposeSpec(
-                http=HttpExposeSpec(internal=HttpInternal(port=8000))
-            ),
+            expose=ExposeSpec(http=HttpExposeSpec(internal=HttpInternal(port=8000))),
             manage=ManageSpec(systemd=SystemdSpec()),
         )
         assert Role.SERVICE in m.roles
@@ -144,7 +138,9 @@ class TestConsistencyValidation:
 
     def test_remote_with_systemd_raises(self) -> None:
         """Remote runner + systemd management is invalid."""
-        with pytest.raises(ValueError, match="manage.systemd cannot be enabled for runner=remote"):
+        with pytest.raises(
+            ValueError, match="manage.systemd cannot be enabled for runner=remote"
+        ):
             ComponentManifest(
                 id="bad",
                 run=RunRemote(runner="remote", base_url="http://example.com"),

core/tests/test_systemd.py

@@ -5,7 +5,12 @@ from __future__ import annotations
 from pathlib import Path
 
 from castle_core.config import load_config
-from castle_core.generators.systemd import generate_unit, unit_name
+from castle_core.generators.systemd import (
+    generate_unit,
+    generate_unit_from_deployed,
+    unit_name,
+)
+from castle_core.registry import DeployedComponent
 
 
 class TestUnitName:
@@ -27,15 +32,15 @@ class TestUnitGeneration:
         unit = generate_unit(config, "test-svc", manifest)
         assert "Description=Castle: Test service" in unit
 
-    def test_contains_working_dir(self, castle_root: Path) -> None:
-        """Unit file has correct working directory."""
+    def test_no_working_directory(self, castle_root: Path) -> None:
+        """Unit file has no WorkingDirectory (source/runtime separation)."""
         config = load_config(castle_root)
         manifest = config.components["test-svc"]
         unit = generate_unit(config, "test-svc", manifest)
-        assert f"WorkingDirectory={castle_root / 'test-svc'}" in unit
+        assert "WorkingDirectory" not in unit
 
     def test_contains_environment(self, castle_root: Path) -> None:
-        """Unit file has environment variables."""
+        """Unit file has environment variables from defaults.env."""
         config = load_config(castle_root)
         manifest = config.components["test-svc"]
         unit = generate_unit(config, "test-svc", manifest)
@@ -55,3 +60,47 @@ class TestUnitGeneration:
         manifest = config.components["test-svc"]
         unit = generate_unit(config, "test-svc", manifest)
         assert "run test-svc" in unit
+
+
+class TestUnitFromDeployed:
+    """Tests for registry-based systemd unit generation."""
+
+    def test_basic_service(self) -> None:
+        """Generate a unit from a deployed component."""
+        deployed = DeployedComponent(
+            runner="python_uv_tool",
+            run_cmd=["/home/user/.local/bin/uv", "run", "my-svc"],
+            env={"MY_SVC_PORT": "9001", "MY_SVC_DATA_DIR": "/data/castle/my-svc"},
+            description="My service",
+        )
+        unit = generate_unit_from_deployed("my-svc", deployed)
+        assert "Description=Castle: My service" in unit
+        assert "ExecStart=/home/user/.local/bin/uv run my-svc" in unit
+        assert "Environment=MY_SVC_PORT=9001" in unit
+        assert "Environment=MY_SVC_DATA_DIR=/data/castle/my-svc" in unit
+        assert "WorkingDirectory" not in unit
+        assert "Restart=on-failure" in unit
+
+    def test_scheduled_job(self) -> None:
+        """Scheduled component generates oneshot unit."""
+        deployed = DeployedComponent(
+            runner="command",
+            run_cmd=["/home/user/.local/bin/my-job"],
+            env={},
+            description="Nightly job",
+            schedule="0 2 * * *",
+        )
+        unit = generate_unit_from_deployed("my-job", deployed)
+        assert "Type=oneshot" in unit
+        assert "Restart=" not in unit
+
+    def test_no_repo_paths(self) -> None:
+        """Generated units must not reference repo paths."""
+        deployed = DeployedComponent(
+            runner="python_uv_tool",
+            run_cmd=["/home/user/.local/bin/uv", "run", "my-svc"],
+            env={"DATA_DIR": "/data/castle/my-svc"},
+            description="Test",
+        )
+        unit = generate_unit_from_deployed("my-svc", deployed)
+        assert "/data/repos/" not in unit