diff --git a/dream-server/installers/windows/dream.ps1 b/dream-server/installers/windows/dream.ps1
index e84d3906..3702ac6a 100644
--- a/dream-server/installers/windows/dream.ps1
+++ b/dream-server/installers/windows/dream.ps1
@@ -442,6 +442,19 @@ function Invoke-Status {
             }
         }
 
+        # Host agent status
+        try {
+            $resp = Invoke-WebRequest -Uri $script:DREAM_AGENT_HEALTH_URL `
+                -TimeoutSec 3 -UseBasicParsing -ErrorAction SilentlyContinue
+            if ($resp.StatusCode -eq 200) {
+                Write-AISuccess "Host Agent: running (port $($script:DREAM_AGENT_PORT))"
+            } else {
+                Write-AIWarn "Host Agent: responded with $($resp.StatusCode)"
+            }
+        } catch {
+            Write-AIWarn "Host Agent: not responding (port $($script:DREAM_AGENT_PORT))"
+        }
+
         # Docker services
         Write-Host ""
         & docker compose @flags ps --format "table {{.Name}}\t{{.Status}}\t{{.Ports}}" 2>$null
@@ -514,6 +527,11 @@ function Invoke-Start {
             Start-NativeInferenceServer
         }
 
+        # Start host agent (if not already running)
+        if (-not $Service) {
+            Invoke-Agent -Action "start"
+        }
+
         $flags = Get-ComposeFlags
         if ($Service) {
             Write-AI "Starting $Service..."
@@ -574,6 +592,9 @@ function Invoke-Stop {
                 Stop-NativeInferenceServer
             }
 
+            # Stop host agent
+            Invoke-Agent -Action "stop"
+
             Write-AISuccess "All services stopped"
         }
     } finally {
@@ -739,6 +760,118 @@ function Invoke-Report {
     }
 }
 
+function Invoke-Agent {
+    param([string]$Action = "status")
+
+    $agentScript = Join-Path (Join-Path $InstallDir "bin") "dream-host-agent.py"
+    $pidFile     = $script:DREAM_AGENT_PID_FILE
+    $logFile     = $script:DREAM_AGENT_LOG_FILE
+    $port        = $script:DREAM_AGENT_PORT
+    $healthUrl   = $script:DREAM_AGENT_HEALTH_URL
+
+    switch ($Action.ToLower()) {
+        "status" {
+            try {
+                $resp = Invoke-WebRequest -Uri $healthUrl -TimeoutSec 3 `
+                    -UseBasicParsing -ErrorAction SilentlyContinue
+                if ($resp.StatusCode -eq 200) {
+                    Write-AISuccess "Host agent: running (port $port)"
+                } else {
+                    Write-AIWarn "Host agent: responded with status $($resp.StatusCode)"
+                }
+            } catch {
+                Write-AIWarn "Host agent: not responding (port $port)"
+            }
+        }
+        "start" {
+            # Check if already running
+            try {
+                $resp = Invoke-WebRequest -Uri $healthUrl -TimeoutSec 2 `
+                    -UseBasicParsing -ErrorAction SilentlyContinue
+                if ($resp.StatusCode -eq 200) {
+                    Write-AISuccess "Host agent already running (port $port)"
+                    return
+                }
+            } catch { }
+
+            # Find Python
+            $_python3 = Get-Command python3 -ErrorAction SilentlyContinue
+            if (-not $_python3) { $_python3 = Get-Command python -ErrorAction SilentlyContinue }
+            if (-not $_python3) {
+                Write-AIError "Python not found in PATH -- install Python 3 and try again"
+                return
+            }
+            if (-not (Test-Path $agentScript)) {
+                Write-AIError "Agent script not found: $agentScript"
+                return
+            }
+
+            # Clean stale PID
+            if (Test-Path $pidFile) {
+                try {
+                    $_oldPid = [int](Get-Content $pidFile -Raw).Trim()
+                    Stop-Process -Id $_oldPid -Force -ErrorAction SilentlyContinue
+                } catch { }
+                Remove-Item $pidFile -Force -ErrorAction SilentlyContinue
+            }
+
+            $pidDir = Split-Path $pidFile
+            New-Item -ItemType Directory -Path $pidDir -Force -ErrorAction SilentlyContinue | Out-Null
+
+            # Prepend Docker to PATH so the agent can find docker.exe
+            # (Docker Desktop may not be in the system PATH yet after fresh install)
+            $_dockerBin = "C:\Program Files\Docker\Docker\resources\bin"
+            $_agentArgs = "set `"PATH=$_dockerBin;%PATH%`" && `"$($_python3.Source)`" `"$agentScript`" --port $port --pid-file `"$pidFile`" --install-dir `"$InstallDir`" 2>> `"$logFile`""
+            Start-Process -FilePath "cmd.exe" -ArgumentList "/c", $_agentArgs `
+                -WindowStyle Hidden -WorkingDirectory $InstallDir
+
+            Start-Sleep -Seconds 3
+            try {
+                $resp = Invoke-WebRequest -Uri $healthUrl -TimeoutSec 3 `
+                    -UseBasicParsing -ErrorAction SilentlyContinue
+                if ($resp.StatusCode -eq 200) {
+                    Write-AISuccess "Host agent started (port $port)"
+                } else {
+                    Write-AIWarn "Host agent started but health check returned $($resp.StatusCode)"
+                }
+            } catch {
+                Write-AIWarn "Host agent started but not yet responding -- check: .\dream.ps1 agent status"
+            }
+        }
+        "stop" {
+            if (Test-Path $pidFile) {
+                try {
+                    $_pid = [int](Get-Content $pidFile -Raw).Trim()
+                    Stop-Process -Id $_pid -Force -ErrorAction SilentlyContinue
+                    Write-AISuccess "Host agent stopped (PID $_pid)"
+                } catch {
+                    Write-AIWarn "Could not stop agent PID: $_"
+                }
+                Remove-Item $pidFile -Force -ErrorAction SilentlyContinue
+            } else {
+                Write-AI "Host agent not running (no PID file)"
+            }
+        }
+        "restart" {
+            Invoke-Agent -Action "stop"
+            Start-Sleep -Seconds 1
+            Invoke-Agent -Action "start"
+        }
+        "logs" {
+            if (Test-Path $logFile) {
+                Get-Content $logFile -Tail 100 -Wait
+            } else {
+                Write-AIWarn "No log file at $logFile"
+            }
+        }
+        default {
+            Write-Host ""
+            Write-Host "  Usage: .\dream.ps1 agent [status|start|stop|restart|logs]" -ForegroundColor DarkGray
+            Write-Host ""
+        }
+    }
+}
+
 function Show-Help {
     Write-Host ""
     Write-Host "  Dream Server CLI (Windows)" -ForegroundColor Green
@@ -766,6 +899,8 @@ function Show-Help {
     Write-Host "Quick chat via API" -ForegroundColor DarkGray
     Write-Host "    update              " -ForegroundColor Cyan -NoNewline
     Write-Host "Pull latest images and restart" -ForegroundColor DarkGray
+    Write-Host "    agent [action]      " -ForegroundColor Cyan -NoNewline
+    Write-Host "Host agent: status|start|stop|restart|logs" -ForegroundColor DarkGray
     Write-Host "    report              " -ForegroundColor Cyan -NoNewline
     Write-Host "Generate Windows diagnostics bundle" -ForegroundColor DarkGray
     Write-Host "    version             " -ForegroundColor Cyan -NoNewline
@@ -807,6 +942,11 @@ switch ($Command.ToLower()) {
     "chat"    { Invoke-Chat -Message ($Arguments -join " ") }
     "update"  { Invoke-Update }
     "report"  { Invoke-Report }
+    "agent"   {
+        $action = ($Arguments | Select-Object -First 1)
+        if (-not $action) { $action = "status" }
+        Invoke-Agent -Action $action
+    }
     "version" { Write-Host "Dream Server v$($script:DS_VERSION) (Windows)" -ForegroundColor Green }
     "help"    { Show-Help }
     default   {
diff --git a/dream-server/installers/windows/lib/constants.ps1 b/dream-server/installers/windows/lib/constants.ps1
index 67bce2b7..1422c4d1 100644
--- a/dream-server/installers/windows/lib/constants.ps1
+++ b/dream-server/installers/windows/lib/constants.ps1
@@ -59,6 +59,13 @@ $script:OPENCODE_EXE = Join-Path (Join-Path $env:USERPROFILE ".opencode") "bin\o
 $script:OPENCODE_CONFIG_DIR = Join-Path (Join-Path $env:USERPROFILE ".config") "opencode"
 $script:OPENCODE_PORT = 3003
 
+# Dream Host Agent (host-level extension lifecycle manager)
+$script:DREAM_AGENT_PORT       = 7710
+$script:DREAM_AGENT_PID_FILE   = Join-Path (Join-Path $script:DS_INSTALL_DIR "data") "dream-host-agent.pid"
+$script:DREAM_AGENT_LOG_FILE   = Join-Path (Join-Path $script:DS_INSTALL_DIR "data") "dream-host-agent.log"
+$script:DREAM_AGENT_HEALTH_URL = "http://127.0.0.1:7710/health"
+$script:DREAM_AGENT_TASK_NAME  = "DreamServerHostAgent"
+
 # Timing
 $script:INSTALL_START = Get-Date
 
diff --git a/dream-server/installers/windows/phases/07-devtools.ps1 b/dream-server/installers/windows/phases/07-devtools.ps1
index f1615b06..3eacc7f1 100644
--- a/dream-server/installers/windows/phases/07-devtools.ps1
+++ b/dream-server/installers/windows/phases/07-devtools.ps1
@@ -31,6 +31,8 @@ if ($dryRun) {
     if (-not $cloudMode) {
         Write-AI "[DRY RUN] Would check for Node.js and install Claude Code + Codex CLI via npm"
     }
+    Write-AI "[DRY RUN] Would start Dream Host Agent on port $($script:DREAM_AGENT_PORT)"
+    Write-AI "[DRY RUN] Would register $($script:DREAM_AGENT_TASK_NAME) scheduled task for login persistence"
     return
 }
 
@@ -227,4 +229,77 @@ if ($_npmCmd) {
     }
 }
 
+# ── Dream Host Agent (extension lifecycle management) ────────────────────────
+$_agentScript = Join-Path (Join-Path $installDir "bin") "dream-host-agent.py"
+if (Test-Path $_agentScript) {
+    $_python3 = Get-Command python3 -ErrorAction SilentlyContinue
+    if (-not $_python3) { $_python3 = Get-Command python -ErrorAction SilentlyContinue }
+
+    if ($_python3) {
+        # Kill existing agent on reinstall (matches Linux force-restart pattern)
+        if (Test-Path $script:DREAM_AGENT_PID_FILE) {
+            $_oldPid = $null
+            try {
+                $_oldPid = [int](Get-Content $script:DREAM_AGENT_PID_FILE -Raw).Trim()
+                Stop-Process -Id $_oldPid -Force -ErrorAction SilentlyContinue
+            } catch { }
+            Remove-Item $script:DREAM_AGENT_PID_FILE -Force -ErrorAction SilentlyContinue
+        }
+
+        # Ensure data directory exists for PID and log files
+        $pidDir = Split-Path $script:DREAM_AGENT_PID_FILE
+        New-Item -ItemType Directory -Path $pidDir -Force -ErrorAction SilentlyContinue | Out-Null
+
+        # Start agent via cmd.exe wrapper for stderr→log redirect.
+        # Prepend Docker to PATH so the agent can find docker.exe
+        # (Docker Desktop may not be in the system PATH yet after fresh install).
+        $_dockerBin = "C:\Program Files\Docker\Docker\resources\bin"
+        $_agentArgs = "set `"PATH=$_dockerBin;%PATH%`" && `"$($_python3.Source)`" `"$_agentScript`" --port $($script:DREAM_AGENT_PORT) --pid-file `"$($script:DREAM_AGENT_PID_FILE)`" --install-dir `"$installDir`" 2>> `"$($script:DREAM_AGENT_LOG_FILE)`""
+        Start-Process -FilePath "cmd.exe" -ArgumentList "/c", $_agentArgs `
+            -WindowStyle Hidden -WorkingDirectory $installDir
+
+        # Brief health check
+        Start-Sleep -Seconds 3
+        try {
+            $resp = Invoke-WebRequest -Uri $script:DREAM_AGENT_HEALTH_URL `
+                -TimeoutSec 3 -UseBasicParsing -ErrorAction SilentlyContinue
+            if ($resp.StatusCode -eq 200) {
+                Write-AISuccess "Dream host agent started (port $($script:DREAM_AGENT_PORT))"
+            } else {
+                Write-AIWarn "Dream host agent started but health check returned $($resp.StatusCode)"
+            }
+        } catch {
+            Write-AIWarn "Dream host agent started but not yet responding -- check: .\dream.ps1 agent status"
+        }
+
+        # Register Windows Scheduled Task for login persistence
+        Unregister-ScheduledTask -TaskName $script:DREAM_AGENT_TASK_NAME `
+            -Confirm:$false -ErrorAction SilentlyContinue
+
+        $taskAction = New-ScheduledTaskAction -Execute "cmd.exe" `
+            -Argument "/c set `"PATH=$_dockerBin;%PATH%`" && `"$($_python3.Source)`" `"$_agentScript`" --port $($script:DREAM_AGENT_PORT) --pid-file `"$($script:DREAM_AGENT_PID_FILE)`" --install-dir `"$installDir`" 2>> `"$($script:DREAM_AGENT_LOG_FILE)`"" `
+            -WorkingDirectory $installDir
+        $taskTrigger  = New-ScheduledTaskTrigger -AtLogOn
+        $taskSettings = New-ScheduledTaskSettingsSet `
+            -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries `
+            -StartWhenAvailable -ExecutionTimeLimit ([TimeSpan]::Zero)
+
+        Register-ScheduledTask -TaskName $script:DREAM_AGENT_TASK_NAME `
+            -Action $taskAction -Trigger $taskTrigger -Settings $taskSettings `
+            -Description "DreamServer Host Agent -- manages extensions and bridges dashboard to host" `
+            -ErrorAction SilentlyContinue | Out-Null
+
+        if ($?) {
+            Write-AISuccess "Host agent registered to start at login (Task: $($script:DREAM_AGENT_TASK_NAME))"
+        } else {
+            Write-AIWarn "Could not register login task -- start manually: .\dream.ps1 agent start"
+        }
+    } else {
+        Write-AIWarn "Python not found -- Dream host agent not started"
+        Write-AI "  Install Python 3 and re-run the installer, or start manually: .\dream.ps1 agent start"
+    }
+} else {
+    Write-AI "Dream host agent script not found -- skipping"
+}
+
 Write-AISuccess "Developer tools setup complete"