feat(workspace): port cwd across backends

tests/unit/test_workspace.py

@@ -0,0 +1,58 @@
+"""Unit: backend-neutral workspace planning."""
+
+from __future__ import annotations
+
+import tempfile
+import unittest
+from pathlib import Path
+
+from bot_bottle.backend import BottleSpec
+from bot_bottle.manifest import Manifest
+from bot_bottle.workspace import workspace_plan
+
+
+def _spec(*, copy_cwd: bool, user_cwd: str) -> BottleSpec:
+    manifest = Manifest.from_json_obj({
+        "bottles": {"dev": {}},
+        "agents": {"demo": {"skills": [], "prompt": "", "bottle": "dev"}},
+    })
+    return BottleSpec(
+        manifest=manifest,
+        agent_name="demo",
+        copy_cwd=copy_cwd,
+        user_cwd=user_cwd,
+    )
+
+
+class TestWorkspacePlan(unittest.TestCase):
+    def test_disabled_uses_guest_home_as_workdir(self):
+        plan = workspace_plan(
+            _spec(copy_cwd=False, user_cwd="/tmp/project"),
+            guest_home="/home/node",
+        )
+        self.assertFalse(plan.enabled)
+        self.assertEqual("/home/node", plan.guest_path)
+        self.assertEqual("/home/node", plan.workdir)
+
+    def test_enabled_uses_workspace_under_guest_home(self):
+        plan = workspace_plan(
+            _spec(copy_cwd=True, user_cwd="/tmp/project"),
+            guest_home="/guest/home",
+        )
+        self.assertTrue(plan.enabled)
+        self.assertEqual(Path("/tmp/project"), plan.host_path)
+        self.assertEqual("/guest/home/workspace", plan.guest_path)
+        self.assertEqual("/guest/home/workspace", plan.workdir)
+
+    def test_detects_host_git_dir(self):
+        with tempfile.TemporaryDirectory(prefix="bb-workspace.") as tmp:
+            Path(tmp, ".git").mkdir()
+            plan = workspace_plan(
+                _spec(copy_cwd=True, user_cwd=tmp),
+                guest_home="/home/node",
+            )
+        self.assertTrue(plan.has_host_git_dir)
+
+
+if __name__ == "__main__":
+    unittest.main()