Enhance installation state management and diagnostics for ComfyUI

- Updated the `gpu-rent` logic to ensure the `IsInstalled` flag is accurately set based on the presence of ComfyUI, preventing conflicts during installation.
- Improved the handling of the `/mnt/swarm_data` directory to skip creation if it does not exist, enhancing robustness in provisioning.
- Added tests to validate the new installation state checks and ensure proper diagnostics during the installation process, including scenarios for clearing and setting the `IsInstalled` flag.

tests/test_wait_backend_idle.py

@@ -48,6 +48,9 @@ def test_install_swarm_comfy_script_payload():
     assert "absolute StartScript" in text or "reconfigure errored" in text
     assert "/mnt/swarm_data" in text or "DATA /" in text
     assert 'bstat in ("empty", "disabled", "all_disabled", "unknown")' in text
+    assert "prepare_first_install" in text
+    assert "already installed" in text
+    assert "Open SwarmUI → Server → Backends" not in text
 
 
 def test_wait_backend_idle_fail_fast_on_long_loading(monkeypatch):

tests/test_warm_up_skips.py

@@ -102,9 +102,57 @@ def test_autocomplete_merge_sets_is_installed():
 
     assert "IsInstalled: true" in _AUTOCOMPLETE_MERGE_PY
     assert "IsInstalled: true" in _ENSURE_INSTALLED_PY
+    assert "comfy_on_disk" in _AUTOCOMPLETE_MERGE_PY
+    assert "comfy_on_disk" in _ENSURE_INSTALLED_PY
+    assert r"\1false" in _AUTOCOMPLETE_MERGE_PY
+    assert r"\1false" in _ENSURE_INSTALLED_PY
+    assert "GPU_RENT_COMFY_PRESENT" in _AUTOCOMPLETE_MERGE_PY
+    assert "GPU_RENT_COMFY_PRESENT" in _ENSURE_INSTALLED_PY
     assert hasattr(provision, "ensure_settings_is_installed")
 
 
+def test_ensure_installed_clears_flag_without_comfy(tmp_path):
+    import os
+    import re
+    import subprocess
+    import sys
+
+    from gpu_rent.provision import _ENSURE_INSTALLED_PY
+
+    settings = tmp_path / "Settings.fds"
+    settings.write_text("IsInstalled: true\nTheme: modern_dark\n", encoding="utf-8")
+    script = tmp_path / "ensure.py"
+    script.write_text(_ENSURE_INSTALLED_PY, encoding="utf-8")
+    env = os.environ.copy()
+    env["GPU_RENT_SETTINGS_FDS"] = str(settings)
+    env["GPU_RENT_COMFY_PRESENT"] = "0"
+    out = subprocess.check_output([sys.executable, str(script)], env=env, text=True)
+    assert "IsInstalled false" in out or "cleared" in out
+    text = settings.read_text(encoding="utf-8")
+    assert re.search(r"(?im)^\s*IsInstalled:\s*false\s*$", text)
+    assert "Theme: modern_dark" in text
+
+
+def test_ensure_installed_sets_true_when_comfy_present(tmp_path):
+    import os
+    import re
+    import subprocess
+    import sys
+
+    from gpu_rent.provision import _ENSURE_INSTALLED_PY
+
+    settings = tmp_path / "Settings.fds"
+    settings.write_text("IsInstalled: false\n", encoding="utf-8")
+    script = tmp_path / "ensure.py"
+    script.write_text(_ENSURE_INSTALLED_PY, encoding="utf-8")
+    env = os.environ.copy()
+    env["GPU_RENT_SETTINGS_FDS"] = str(settings)
+    env["GPU_RENT_COMFY_PRESENT"] = "1"
+    subprocess.check_call([sys.executable, str(script)], env=env)
+    text = settings.read_text(encoding="utf-8")
+    assert re.search(r"(?im)^\s*IsInstalled:\s*true\s*$", text)
+
+
 def test_install_comfy_patches_is_installed_on_skip():
     from importlib.resources import files
 
@@ -113,3 +161,20 @@ def test_install_comfy_patches_is_installed_on_skip():
     )
     assert "ensure_settings_installed_flag" in text
     assert "leave /Install" in text
+    assert "prepare_first_install" in text
+    assert "already installed" in text
+    assert "IsInstalled=false" in text
+    assert "Open SwarmUI" not in text
+
+
+def test_clear_settings_installed_flag(tmp_path, monkeypatch):
+    from gpu_rent.remote import install_swarm_comfy as inst
+
+    settings = tmp_path / "Settings.fds"
+    settings.write_text("IsInstalled: true\nTheme: x\n", encoding="utf-8")
+    monkeypatch.setattr(inst, "SETTINGS", settings)
+    assert inst.clear_settings_installed_flag() is True
+    text = settings.read_text(encoding="utf-8")
+    assert "IsInstalled: false" in text
+    assert "Theme: x" in text
+    assert inst.clear_settings_installed_flag() is False