Enhance bootstrap script for .NET installation and error handling

- Added `wget` to the package installation list for improved script functionality.
- Implemented a fallback mechanism using `curl` for .NET installation if the primary script fails, enhancing robustness.
- Updated ownership change for the installation directory to ensure proper permissions for the user.
- Enhanced logging for error scenarios during .NET installation, providing clearer feedback for troubleshooting.
- Added tests to verify the new fallback functionality and ownership changes in the bootstrap script.

src/gpu_rent/remote/bootstrap.sh

@@ -93,7 +93,7 @@ else
     log "light запрошен, но маркера нет — полный apt"
   fi
   apt-get update -qq
-  apt-get install -y -qq git python3 python3-venv python3-pip python3-full curl ca-certificates
+  apt-get install -y -qq git python3 python3-venv python3-pip python3-full curl wget ca-certificates
 fi
 
 ensure_data_mount
@@ -148,17 +148,39 @@ else
   log "SwarmUI уже в ${SWARM_ROOT} (update off)"
 fi
 
+# Clone runs as root; Swarm's linux-dotnet-install.sh wget -O into launchtools/
+# must be writable by SWARM_USER (otherwise: "dotnet-install.sh: Permission denied").
+chown -R "${SWARM_USER}:${SWARM_USER}" "$SWARM_ROOT"
+
+install_dotnet_via_curl() {
+  # Fallback when Swarm script fails (no wget, perms, CDN blip).
+  local install_dir="/home/${SWARM_USER}/.dotnet"
+  local script="/tmp/gpu-rent-dotnet-install.sh"
+  log "fallback: curl → ${script}, install → ${install_dir}"
+  curl -fsSL "https://dot.net/v1/dotnet-install.sh" -o "$script"
+  chmod +x "$script"
+  sudo -u "$SWARM_USER" bash "$script" --channel 10.0 --runtime aspnetcore --install-dir "$install_dir"
+  sudo -u "$SWARM_USER" bash "$script" --channel 10.0 --install-dir "$install_dir"
+  sudo -u "$SWARM_USER" bash "$script" --channel 8.0 --runtime aspnetcore --install-dir "$install_dir"
+  sudo -u "$SWARM_USER" bash "$script" --channel 8.0 --install-dir "$install_dir"
+  rm -f "$script"
+}
+
 if [[ ! -x /usr/share/dotnet/dotnet && ! -x "/home/${SWARM_USER}/.dotnet/dotnet" ]]; then
   if [[ -f "${SWARM_ROOT}/launchtools/linux-dotnet-install.sh" ]]; then
     log "ставим .NET SDK (скрипт SwarmUI)"
     # SwarmUI's linux-dotnet-install.sh does `cd launchtools` and
     # `./launchtools/dotnet-install.sh` — must run from repo root.
     if ! sudo -u "$SWARM_USER" bash -c "cd \"$SWARM_ROOT\" && bash launchtools/linux-dotnet-install.sh"; then
-      log "WARN: linux-dotnet-install.sh завершился с ошибкой"
+      log "WARN: linux-dotnet-install.sh завершился с ошибкой — пробуем curl fallback"
+      install_dotnet_via_curl || log "WARN: curl fallback тоже упал"
     fi
+  else
+    log "нет linux-dotnet-install.sh — curl fallback"
+    install_dotnet_via_curl || true
   fi
   if [[ ! -x /usr/share/dotnet/dotnet && ! -x "/home/${SWARM_USER}/.dotnet/dotnet" ]]; then
-    log "ERROR: .NET не установлен ($HOME/.dotnet или /usr/share/dotnet) — SwarmUI не стартует"
+    log "ERROR: .NET не установлен (/home/${SWARM_USER}/.dotnet или /usr/share/dotnet) — SwarmUI не стартует"
     exit 1
   fi
   log ".NET ok: $(sudo -u "$SWARM_USER" bash -lc 'command -v dotnet || echo /home/'"$SWARM_USER"'/.dotnet/dotnet')"

tests/test_bootstrap.py

@@ -19,3 +19,7 @@ def test_bootstrap_script_is_native_swarmui():
     assert "light bootstrap — пропускаем apt-get" in script
     # llm-only re-up can skip apt when data marker exists (not only Swarm boot marker)
     assert 'MARKER_DATA' in script or ".gpu-rent-ready" in script
+    # .NET: chown before Swarm install script; curl fallback if wget/perms fail
+    assert "install_dotnet_via_curl" in script
+    assert "chown -R" in script
+    assert "wget" in script