refactor(orchestrator): swap SubprocessBottleRunner → ProgrammaticBottleRunner

BottleRunner Protocol tightened: start() → str, freeze/resume/destroy → None.
RunResult removed. lifecycle.py unpacks the slug directly. FakeRunner and
test_runner updated to match. Config.bot_bottle_cli dropped (nothing uses it).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/unit/orchestrator/test_runner.py

@@ -1,11 +1,13 @@
-"""Unit: SubprocessBottleRunner + slugify (injected run fn)."""
+"""Unit: ProgrammaticBottleRunner + slugify."""
 
 from __future__ import annotations
 
+import sys
+import types
 import unittest
-from collections.abc import Sequence
+from unittest.mock import MagicMock
 
-from bot_bottle.orchestrator.runner import SubprocessBottleRunner, slugify
+from bot_bottle.orchestrator.runner import ProgrammaticBottleRunner, slugify
 
 
 class SlugifyTest(unittest.TestCase):
@@ -17,64 +19,75 @@ class SlugifyTest(unittest.TestCase):
         self.assertEqual("a-b-c", slugify("  A_B/C!! "))
 
 
-class SubprocessRunnerTest(unittest.TestCase):
+def _make_api_stub(**overrides):
+    """Return a mock bot_bottle.api module with sensible defaults."""
+    stub = types.ModuleType("bot_bottle.api")
+    stub.start_headless = MagicMock(return_value="impl-r-17")
+    stub.freeze = MagicMock()
+    stub.resume_headless = MagicMock()
+    stub.destroy = MagicMock()
+    for k, v in overrides.items():
+        setattr(stub, k, v)
+    return stub
+
+
+class ProgrammaticRunnerTest(unittest.TestCase):
     def setUp(self):
-        self.argvs: list[list[str]] = []
-        self.envs: list[dict[str, str]] = []
+        self._api = _make_api_stub()
+        sys.modules["bot_bottle.api"] = self._api
+        self.runner = ProgrammaticBottleRunner()
 
-        def fake_run(argv: Sequence[str], env: dict[str, str]) -> int:
-            self.argvs.append(list(argv))
-            self.envs.append(dict(env))
-            return 0
+    def tearDown(self):
+        sys.modules.pop("bot_bottle.api", None)
 
-        self.runner = SubprocessBottleRunner(
-            cli="/x/cli.py", base_env={"PATH": "/bin"}, python="/py", run=fake_run
-        )
-
-    def test_start_argv_and_env(self):
-        result = self.runner.start(
+    def test_start_returns_slug_from_api(self):
+        slug = self.runner.start(
             agent="impl", bottles=["claude", "dev"], label="impl-r-17",
             prompt="do it", forge_env={"FORGE_OWNER": "didericis"},
         )
-        self.assertEqual("impl-r-17", result.slug)
-        argv = self.argvs[0]
-        self.assertEqual(["/py", "/x/cli.py", "start", "impl", "--headless",
-                          "--label", "impl-r-17", "--prompt", "do it",
-                          "--bottle", "claude", "--bottle", "dev"], argv)
-        # forge_env merged over base_env for the child.
-        self.assertEqual("didericis", self.envs[0]["FORGE_OWNER"])
-        self.assertEqual("/bin", self.envs[0]["PATH"])
+        self.assertEqual("impl-r-17", slug)
 
-    def test_start_no_bottles_omits_flag(self):
+    def test_start_forwards_all_args(self):
+        self.runner.start(
+            agent="impl", bottles=["claude", "dev"], label="impl-r-17",
+            prompt="do it", forge_env={"FORGE_OWNER": "didericis"},
+        )
+        self._api.start_headless.assert_called_once_with(
+            "impl",
+            prompt="do it",
+            bottles=["claude", "dev"],
+            label="impl-r-17",
+            forge_env={"FORGE_OWNER": "didericis"},
+        )
+
+    def test_start_no_bottles_passes_none(self):
         self.runner.start(agent="impl", bottles=[], label="l", prompt="p", forge_env={})
-        self.assertNotIn("--bottle", self.argvs[0])
+        call_kwargs = self._api.start_headless.call_args[1]
+        self.assertIsNone(call_kwargs["bottles"])
 
-    def test_freeze_calls_commit(self):
+    def test_freeze_delegates_to_api(self):
         self.runner.freeze("slug-1")
-        self.assertEqual(["/py", "/x/cli.py", "commit", "slug-1"], self.argvs[0])
+        self._api.freeze.assert_called_once_with("slug-1")
 
-    def test_resume_headless(self):
-        r = self.runner.resume("slug-1", "address review")
-        self.assertEqual("slug-1", r.slug)
-        self.assertEqual(
-            ["/py", "/x/cli.py", "resume", "slug-1", "--headless", "--prompt",
-             "address review"], self.argvs[0])
+    def test_freeze_returns_none(self):
+        result = self.runner.freeze("slug-1")
+        self.assertIsNone(result)
 
-    def test_destroy_calls_cleanup(self):
-        code = self.runner.destroy("slug-7")
-        self.assertEqual(0, code)
-        self.assertEqual(["/py", "/x/cli.py", "cleanup", "slug-7"], self.argvs[0])
+    def test_resume_delegates_to_api(self):
+        self.runner.resume("slug-1", "address review")
+        self._api.resume_headless.assert_called_once_with("slug-1", prompt="address review")
 
+    def test_resume_returns_none(self):
+        result = self.runner.resume("slug-1", "p")
+        self.assertIsNone(result)
 
-class DefaultRunTest(unittest.TestCase):
-    def test_calls_subprocess_and_returns_code(self):
-        from unittest.mock import MagicMock, patch
-        from bot_bottle.orchestrator.runner import _default_run
-        with patch("subprocess.run") as mock_run:
-            mock_run.return_value = MagicMock(returncode=42)
-            code = _default_run(["echo", "hi"], {"PATH": "/bin"})
-        self.assertEqual(42, code)
-        mock_run.assert_called_once_with(["echo", "hi"], env={"PATH": "/bin"}, check=False)
+    def test_destroy_delegates_to_api(self):
+        self.runner.destroy("slug-7")
+        self._api.destroy.assert_called_once_with("slug-7")
+
+    def test_destroy_returns_none(self):
+        result = self.runner.destroy("slug-7")
+        self.assertIsNone(result)
 
 
 if __name__ == "__main__":