Enhance Settings.fds management and installation checks

- Introduced functions to ensure the `IsInstalled` flag is set in `Settings.fds`, preventing the UI from displaying the /Install wizard.
- Added logic to create or patch `Settings.fds` with installation details, including the installation date and version.
- Updated the `install_swarm_comfy.py` script to call the new function, ensuring the installation state is correctly managed during backend operations.
- Added tests to verify the presence of the `IsInstalled` flag in the relevant scripts and ensure proper functionality during installation checks.

src/gpu_rent/provision.py

@@ -284,6 +284,7 @@ from __future__ import annotations
 import os
 import re
 import sys
+import time
 from pathlib import Path
 
 p = Path(os.environ.get("GPU_RENT_SETTINGS_FDS") or "/mnt/swarm_data/Data/Settings.fds")
@@ -292,8 +293,15 @@ if not fname:
     print("no GPU_RENT_AUTOCOMPLETE_FILE", file=sys.stderr)
     raise SystemExit(1)
 
+installed_block = (
+    "IsInstalled: true\n"
+    f"InstallDate: {time.strftime('%Y-%m-%d')}\n"
+    "InstallVersion: gpu-rent\n"
+)
+
 block = (
-    "DefaultUser:\n"
+    installed_block
+    + "DefaultUser:\n"
     "    AutoComplete:\n"
     f"        Source: {fname}\n"
     "        EscapeParens: true\n"
@@ -302,10 +310,20 @@ block = (
 if not p.is_file():
     p.parent.mkdir(parents=True, exist_ok=True)
     p.write_text(block, encoding="utf-8")
-    print(f"created Settings.fds AutoComplete.Source={fname}")
+    print(f"created Settings.fds IsInstalled+AutoComplete.Source={fname}")
     raise SystemExit(0)
 
 text = p.read_text(encoding="utf-8", errors="replace")
+# Never leave a Settings.fds that sends the UI to /Install.
+if not re.search(r"(?im)^\s*IsInstalled:\s*true\s*$", text):
+    if re.search(r"(?im)^\s*IsInstalled:\s*", text):
+        text = re.sub(r"(?im)^(\s*IsInstalled:\s*).*$", r"\1true", text, count=1)
+    else:
+        text = installed_block + text
+    p.write_text(text, encoding="utf-8")
+    print("patched IsInstalled: true (was missing/false)")
+    text = p.read_text(encoding="utf-8", errors="replace")
+
 if re.search(rf"^\s*Source:\s*{re.escape(fname)}\s*$", text, re.M):
     print(f"AutoComplete.Source already {fname}")
     raise SystemExit(0)
@@ -343,6 +361,98 @@ else:
 '''
 
 
+_ENSURE_INSTALLED_PY = r'''
+#!/usr/bin/env python3
+"""Ensure Settings.fds has IsInstalled: true so UI skips /Install wizard."""
+from __future__ import annotations
+
+import os
+import re
+import sys
+import time
+from pathlib import Path
+
+paths = []
+env = (os.environ.get("GPU_RENT_SETTINGS_FDS") or "").strip()
+if env:
+    paths.append(Path(env))
+paths.extend(
+    [
+        Path("/mnt/swarm_data/Data/Settings.fds"),
+        Path("/opt/swarmui/Data/Settings.fds"),
+    ]
+)
+# Unique while preserving order
+seen = set()
+uniq: list[Path] = []
+for p in paths:
+    key = str(p)
+    if key in seen:
+        continue
+    seen.add(key)
+    uniq.append(p)
+
+changed = False
+for p in uniq:
+    try:
+        same = False
+        if p.is_file():
+            for q in uniq:
+                if q is not p and q.is_file():
+                    try:
+                        if p.resolve() == q.resolve():
+                            same = True
+                            break
+                    except OSError:
+                        pass
+        if same and changed:
+            continue
+        if not p.is_file():
+            # Only create on data volume path
+            if "/mnt/swarm_data/" not in str(p):
+                continue
+            p.parent.mkdir(parents=True, exist_ok=True)
+            p.write_text(
+                "IsInstalled: true\n"
+                f"InstallDate: {time.strftime('%Y-%m-%d')}\n"
+                "InstallVersion: gpu-rent\n"
+                "DefaultUser:\n"
+                "    Theme: modern_dark\n",
+                encoding="utf-8",
+            )
+            print(f"created {p} with IsInstalled")
+            changed = True
+            continue
+        text = p.read_text(encoding="utf-8", errors="replace")
+        if re.search(r"(?im)^\s*IsInstalled:\s*true\s*$", text):
+            print(f"ok {p}: IsInstalled true")
+            continue
+        if re.search(r"(?im)^\s*IsInstalled:\s*", text):
+            text = re.sub(r"(?im)^(\s*IsInstalled:\s*).*$", r"\1true", text, count=1)
+        else:
+            text = (
+                "IsInstalled: true\n"
+                f"InstallDate: {time.strftime('%Y-%m-%d')}\n"
+                "InstallVersion: gpu-rent\n"
+                + text
+            )
+        if not re.search(r"(?im)^\s*InstallDate:\s*", text):
+            text = re.sub(
+                r"(?im)^(\s*IsInstalled:\s*true\s*\n)",
+                rf"\1InstallDate: {time.strftime('%Y-%m-%d')}\n",
+                text,
+                count=1,
+            )
+        p.write_text(text, encoding="utf-8")
+        print(f"patched {p}: IsInstalled true")
+        changed = True
+    except OSError as exc:
+        print(f"skip {p}: {exc}")
+
+print("CHANGED" if changed else "NOOP")
+'''
+
+
 def _merge_autocomplete_into_settings(
     cfg: Config, host: str, settings_path: str, filename: str, log: Log
 ) -> None:
@@ -364,6 +474,31 @@ def _merge_autocomplete_into_settings(
             log(line.strip())
 
 
+def ensure_settings_is_installed(cfg: Config, host: str, log: Log) -> bool:
+    """Make sure Settings.fds has IsInstalled:true (UI /Install wizard).
+
+    Returns True if the file was created/patched (caller may need SwarmUI restart).
+    """
+    out = run_python(
+        cfg,
+        host,
+        _ENSURE_INSTALLED_PY,
+        remote_path="/tmp/gpu-rent-ensure_installed.py",
+        timeout=60,
+        log=None,
+        env={"GPU_RENT_SETTINGS_FDS": f"{DATA}/Data/Settings.fds"},
+    )
+    changed = False
+    for line in (out or "").splitlines():
+        line = line.strip()
+        if not line:
+            continue
+        log(f"Settings: {line}")
+        if line == "CHANGED":
+            changed = True
+    return changed
+
+
 def _download_url(host: str, version_id: int, file_info: dict) -> str:
     raw = str(file_info.get("downloadUrl") or "")
     if "civitai." in raw and "/api/download/" in raw:
@@ -801,6 +936,9 @@ def provision_vm(
             )
             if cfg.pull_output:
                 pull_tree(cfg, host, f"{DATA}/Output", cfg.local_output_dir, log)
+            # Avoid /Install wizard when backends already exist but Settings lack flag.
+            if ensure_settings_is_installed(cfg, host, log):
+                restart = True
         else:
             log("SwarmUI: skip (llm-only)")
             run_ssh(