Clean action runtime project state

tests/test_completion.py

@@ -2,7 +2,8 @@
 
 import subprocess
 
-from flow.app.completion import complete
+from flow.app.completion import complete, install_zsh_completion
+from flow.core import paths
 from flow.core.config import AppConfig, FlowContext
 from flow.core.console import Console
 from flow.core.platform import PlatformInfo
@@ -96,3 +97,20 @@ def test_complete_dev_attach_returns_empty_on_timeout():
     ctx.runtime.containers.ps = fake_ps  # type: ignore[method-assign]
     result = complete(ctx, ["flow", "dev", "attach", ""], 3)
     assert result == []
+
+
+def test_install_zsh_completion_uses_action_runtime(tmp_path, monkeypatch):
+    monkeypatch.setattr(paths, "HOME", tmp_path)
+    monkeypatch.setattr(paths, "STATE_DIR", tmp_path / "state")
+    ctx = _make_ctx()
+
+    completion_file = install_zsh_completion(
+        ctx,
+        directory=str(tmp_path / "completions"),
+        rc=str(tmp_path / ".zshrc"),
+    )
+
+    assert completion_file == tmp_path / "completions" / "_flow"
+    assert "compdef _flow flow" in completion_file.read_text()
+    assert "# >>> flow completion >>>" in (tmp_path / ".zshrc").read_text()
+    assert (tmp_path / "state" / "actions.jsonl").exists()