diff --git a/installer/HermesHubSetup.cs b/installer/HermesHubSetup.cs
index 47892f3..f9a3fd5 100644
--- a/installer/HermesHubSetup.cs
+++ b/installer/HermesHubSetup.cs
@@ -279,6 +279,18 @@ namespace HermesHubSetup
                     File.Copy(launcherSrc, Path.Combine(HermesHome, "HermesHub.exe"), true);
                 }
 
+                string webLauncherSrc = Path.Combine(sourceRoot, @"launcher\HermesHubWeb.exe");
+                if (!File.Exists(webLauncherSrc))
+                {
+                    webLauncherSrc = Path.Combine(sourceRoot, "HermesHubWeb.exe");
+                }
+
+                if (File.Exists(webLauncherSrc))
+                {
+                    File.Copy(webLauncherSrc, Path.Combine(TargetInstallDir, "HermesHubWeb.exe"), true);
+                    File.Copy(webLauncherSrc, Path.Combine(HermesHome, "HermesHubWeb.exe"), true);
+                }
+
                 // Copy Setup.exe itself to target dir for uninstaller/repair
                 string setupSrc = Process.GetCurrentProcess().MainModule.FileName;
                 if (File.Exists(setupSrc))
@@ -419,6 +431,12 @@ namespace HermesHubSetup
                     try { File.Delete(homeExe); } catch { }
                 }
 
+                string homeWebExe = Path.Combine(HermesHome, "HermesHubWeb.exe");
+                if (File.Exists(homeWebExe))
+                {
+                    try { File.Delete(homeWebExe); } catch { }
+                }
+
                 // Remove plugin
                 string pluginDir = Path.Combine(HermesHome, @"plugins\antigravity-provider");
                 if (Directory.Exists(pluginDir))
@@ -504,19 +522,53 @@ namespace HermesHubSetup
             try
             {
                 string startMenu = Environment.GetFolderPath(Environment.SpecialFolder.Programs);
-                string shortcutPath = Path.Combine(startMenu, "Hermes Hub.lnk");
-                string targetExe = Path.Combine(TargetInstallDir, "HermesHub.exe");
+                string targetWebExe = Path.Combine(TargetInstallDir, "HermesHubWeb.exe");
+                if (!File.Exists(targetWebExe)) targetWebExe = Path.Combine(HermesHome, "HermesHubWeb.exe");
+
+                string targetDesktopExe = Path.Combine(TargetInstallDir, "HermesHub.exe");
+                if (!File.Exists(targetDesktopExe)) targetDesktopExe = Path.Combine(HermesHome, "HermesHub.exe");
 
                 Type shellType = Type.GetTypeFromProgID("WScript.Shell");
                 if (shellType != null)
                 {
                     dynamic shell = Activator.CreateInstance(shellType);
-                    dynamic shortcut = shell.CreateShortcut(shortcutPath);
-                    shortcut.TargetPath = targetExe;
-                    shortcut.WorkingDirectory = TargetInstallDir;
-                    shortcut.Description = "Multi-Agent & Multi-Provider Control Hub for Hermes Agent";
-                    shortcut.IconLocation = targetExe + ",0";
-                    shortcut.Save();
+
+                    // 1. Web Application Window Shortcut (Primary Web App mode)
+                    if (File.Exists(targetWebExe))
+                    {
+                        string webShortcutPath = Path.Combine(startMenu, "Hermes Hub (Web).lnk");
+                        dynamic webShortcut = shell.CreateShortcut(webShortcutPath);
+                        webShortcut.TargetPath = targetWebExe;
+                        webShortcut.WorkingDirectory = TargetInstallDir;
+                        webShortcut.Description = "Hermes Hub — Web Application Window";
+                        webShortcut.IconLocation = targetWebExe + ",0";
+                        webShortcut.Save();
+                    }
+
+                    // 2. Native Desktop Shortcut (CustomTkinter GUI)
+                    if (File.Exists(targetDesktopExe))
+                    {
+                        string desktopShortcutPath = Path.Combine(startMenu, "Hermes Hub (Desktop).lnk");
+                        dynamic desktopShortcut = shell.CreateShortcut(desktopShortcutPath);
+                        desktopShortcut.TargetPath = targetDesktopExe;
+                        desktopShortcut.WorkingDirectory = TargetInstallDir;
+                        desktopShortcut.Description = "Hermes Hub — Native Desktop App";
+                        desktopShortcut.IconLocation = targetDesktopExe + ",0";
+                        desktopShortcut.Save();
+                    }
+
+                    // 3. Standard "Hermes Hub.lnk" shortcut
+                    string standardTarget = File.Exists(targetWebExe) ? targetWebExe : targetDesktopExe;
+                    if (File.Exists(standardTarget))
+                    {
+                        string standardShortcutPath = Path.Combine(startMenu, "Hermes Hub.lnk");
+                        dynamic standardShortcut = shell.CreateShortcut(standardShortcutPath);
+                        standardShortcut.TargetPath = standardTarget;
+                        standardShortcut.WorkingDirectory = TargetInstallDir;
+                        standardShortcut.Description = "Multi-Agent & Multi-Provider Control Hub for Hermes Agent";
+                        standardShortcut.IconLocation = standardTarget + ",0";
+                        standardShortcut.Save();
+                    }
                 }
             }
             catch { }
@@ -527,8 +579,18 @@ namespace HermesHubSetup
             try
             {
                 string startMenu = Environment.GetFolderPath(Environment.SpecialFolder.Programs);
-                string shortcutPath = Path.Combine(startMenu, "Hermes Hub.lnk");
-                if (File.Exists(shortcutPath)) File.Delete(shortcutPath);
+                string[] shortcuts = new string[]
+                {
+                    "Hermes Hub.lnk",
+                    "Hermes Hub (Web).lnk",
+                    "Hermes Hub (Desktop).lnk",
+                    "Hermes Hub Web.lnk"
+                };
+                foreach (string sc in shortcuts)
+                {
+                    string p = Path.Combine(startMenu, sc);
+                    if (File.Exists(p)) try { File.Delete(p); } catch { }
+                }
             }
             catch { }
         }
diff --git a/installer/build_installer.ps1 b/installer/build_installer.ps1
index 81b7cdb..623135a 100644
--- a/installer/build_installer.ps1
+++ b/installer/build_installer.ps1
@@ -12,6 +12,20 @@ $DistDir = Join-Path $RepoRoot "dist"
 New-Item -ItemType Directory -Path $DistDir -Force | Out-Null
 $OutFile = Join-Path $DistDir "HermesHubSetup.exe"
 
+$LauncherDir = Join-Path $RepoRoot "launcher"
+$HubCs = Join-Path $LauncherDir "HermesHub.cs"
+$HubWebCs = Join-Path $LauncherDir "HermesHubWeb.cs"
+
+Write-Host "Compiling native launchers..." -ForegroundColor Cyan
+if (Test-Path $HubCs) {
+    $HubExe = Join-Path $LauncherDir "HermesHub.exe"
+    & $CscPath /target:winexe /out:"$HubExe" /r:System.Windows.Forms.dll /r:System.Drawing.dll "$HubCs"
+}
+if (Test-Path $HubWebCs) {
+    $HubWebExe = Join-Path $LauncherDir "HermesHubWeb.exe"
+    & $CscPath /target:winexe /out:"$HubWebExe" /r:System.Windows.Forms.dll /r:System.Drawing.dll "$HubWebCs"
+}
+
 Write-Host "Compiling HermesHubSetup.exe..." -ForegroundColor Cyan
 & $CscPath /target:winexe /out:"$OutFile" /r:System.Windows.Forms.dll /r:System.Drawing.dll "$SourceFile"
 
diff --git a/installer/install-linux.sh b/installer/install-linux.sh
new file mode 100644
index 0000000..e65acd5
--- /dev/null
+++ b/installer/install-linux.sh
@@ -0,0 +1,189 @@
+#!/usr/bin/env bash
+# ==============================================================================
+# Hermes Hub — Linux Installation Script
+# Mirrors plugin files, registers .desktop entry, creates application launcher,
+# and supports both desktop and headless server environments.
+# ==============================================================================
+
+set -e
+
+HUB_VERSION="0.1.1"
+DEFAULT_HERMES_HOME="$HOME/.hermes"
+HERMES_HOME="${HERMES_HOME:-$DEFAULT_HERMES_HOME}"
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+
+echo "======================================================================"
+echo "           HERMES HUB INSTALLER (Linux / POSIX)                       "
+echo "======================================================================"
+echo "Version     : $HUB_VERSION"
+echo "Hermes Home : $HERMES_HOME"
+echo "Source Root : $REPO_ROOT"
+echo ""
+
+# 1. Check / Discover Python Runtime and Hermes Environment
+echo "[1/6] Checking Python and Hermes environment..."
+PYTHON_BIN=""
+
+if [ -f "$HERMES_HOME/hermes-agent/venv/bin/python3" ]; then
+    PYTHON_BIN="$HERMES_HOME/hermes-agent/venv/bin/python3"
+elif [ -f "$HERMES_HOME/hermes-agent/venv/bin/python" ]; then
+    PYTHON_BIN="$HERMES_HOME/hermes-agent/venv/bin/python"
+elif command -v python3 >/dev/null 2>&1; then
+    PYTHON_BIN="$(command -v python3)"
+elif command -v python >/dev/null 2>&1; then
+    PYTHON_BIN="$(command -v python)"
+fi
+
+if [ -z "$PYTHON_BIN" ]; then
+    echo "❌ Error: Python 3 not found on system. Please install Python 3.9+." >&2
+    exit 10
+fi
+
+PY_VER="$("$PYTHON_BIN" -c 'import sys; print(f"{sys.version_info.major}.{sys.version_info.minor}")')"
+echo "      Using Python: $PYTHON_BIN (v$PY_VER)"
+
+# Ensure Hermes Home Directory Structure
+mkdir -p "$HERMES_HOME"
+mkdir -p "$HERMES_HOME/config"
+mkdir -p "$HERMES_HOME/plugins/antigravity-provider/src"
+mkdir -p "$HERMES_HOME/plugins/antigravity-provider/assets"
+mkdir -p "$HOME/.local/bin"
+mkdir -p "$HOME/.local/share/applications"
+
+# 2. Check and Install Dependencies
+echo "[2/6] Verifying Python dependencies..."
+DEPS_OK=true
+"$PYTHON_BIN" -c "import fastapi, uvicorn, pydantic, psutil, yaml; print('DEPS_OK')" >/dev/null 2>&1 || DEPS_OK=false
+
+if [ "$DEPS_OK" != "true" ]; then
+    echo "      Installing required packages (fastapi, uvicorn, pydantic, psutil, pyyaml)..."
+    "$PYTHON_BIN" -m pip install --no-warn-script-location -q fastapi uvicorn pydantic psutil pyyaml || {
+        echo "⚠️ Warning: pip install returned non-zero code. Trying with --user..."
+        "$PYTHON_BIN" -m pip install --user --no-warn-script-location -q fastapi uvicorn pydantic psutil pyyaml || true
+    }
+fi
+
+# 3. Mirror Plugin Files to ~/.hermes/plugins/antigravity-provider (with cleanup of stale files)
+echo "[3/6] Deploying plugin source files (mirrored)..."
+PLUGIN_SRC="$REPO_ROOT/src/antigravity_provider"
+PLUGIN_DST="$HERMES_HOME/plugins/antigravity-provider/src/antigravity_provider"
+
+if [ -d "$PLUGIN_SRC" ]; then
+    mkdir -p "$PLUGIN_DST"
+    # Use rsync with --delete if available, or python mirroring
+    if command -v rsync >/dev/null 2>&1; then
+        rsync -a --delete --exclude='__pycache__' --exclude='*.pyc' "$PLUGIN_SRC/" "$PLUGIN_DST/"
+    else
+        "$PYTHON_BIN" -c "
+import os, shutil
+src = r'$PLUGIN_SRC'
+dst = r'$PLUGIN_DST'
+if os.path.exists(dst):
+    shutil.rmtree(dst)
+shutil.copytree(src, dst, ignore=shutil.ignore_patterns('__pycache__', '*.pyc'))
+"
+    fi
+else
+    echo "❌ Error: Source directory $PLUGIN_SRC not found!" >&2
+    exit 12
+fi
+
+# Deploy Assets
+if [ -d "$REPO_ROOT/assets" ]; then
+    mkdir -p "$HERMES_HOME/plugins/antigravity-provider/assets"
+    cp -r "$REPO_ROOT/assets/"* "$HERMES_HOME/plugins/antigravity-provider/assets/" 2>/dev/null || true
+fi
+
+# 4. Write Deployment Manifest
+echo "[4/6] Writing deployment manifest..."
+MANIFEST_FILE="$HERMES_HOME/plugins/antigravity-provider/deployment_manifest.json"
+GIT_COMMIT="$(cd "$REPO_ROOT" 2>/dev/null && git rev-parse --short HEAD 2>/dev/null || echo 'fb23bff')"
+TIMESTAMP="$(date -u +"%Y-%m-%dT%H:%M:%SZ" 2>/dev/null || date -u)"
+
+cat <<EOF > "$MANIFEST_FILE"
+{
+  "version": "$HUB_VERSION",
+  "deployed_at": "$TIMESTAMP",
+  "git_commit": "$GIT_COMMIT",
+  "platform": "linux"
+}
+EOF
+
+# Deploy Template Config only if not existing
+if [ ! -f "$HERMES_HOME/config/router_profiles.yaml" ] && [ -f "$REPO_ROOT/config/router_profiles.example.yaml" ]; then
+    echo "      Installing default router_profiles.yaml from template..."
+    cp "$REPO_ROOT/config/router_profiles.example.yaml" "$HERMES_HOME/config/router_profiles.yaml"
+else
+    echo "      Preserving existing user router_profiles.yaml."
+fi
+
+# 5. Deploy Launcher Executable and .desktop Entry
+echo "[5/6] Creating application launcher and .desktop entry..."
+LAUNCHER_SRC="$REPO_ROOT/launcher/hermes-hub-web.sh"
+if [ ! -f "$LAUNCHER_SRC" ]; then
+    LAUNCHER_SRC="$SCRIPT_DIR/hermes-hub-web.sh"
+fi
+
+LAUNCHER_BIN="$HOME/.local/bin/hermes-hub-web"
+cp "$LAUNCHER_SRC" "$LAUNCHER_BIN"
+chmod +x "$LAUNCHER_BIN"
+
+# Also place in ~/.hermes/bin for convenience
+mkdir -p "$HERMES_HOME/bin"
+cp "$LAUNCHER_SRC" "$HERMES_HOME/bin/hermes-hub-web"
+chmod +x "$HERMES_HOME/bin/hermes-hub-web"
+
+# Create .desktop file
+DESKTOP_FILE="$HOME/.local/share/applications/hermes-hub-web.desktop"
+ICON_PATH="$HERMES_HOME/plugins/antigravity-provider/assets/branding/app/HermesHub.ico"
+if [ ! -f "$ICON_PATH" ]; then
+    ICON_PATH="utilities-terminal"
+fi
+
+cat <<EOF > "$DESKTOP_FILE"
+[Desktop Entry]
+Version=1.0
+Type=Application
+Name=Hermes Hub Web
+GenericName=Multi-Agent & Multi-Provider Control Hub
+Comment=Multi-Agent & Multi-Provider Control Hub for Hermes Agent
+Exec=$LAUNCHER_BIN
+Icon=$ICON_PATH
+Terminal=false
+Categories=Development;Utility;
+StartupNotify=true
+StartupWMClass=hermes-hub-web
+EOF
+
+chmod +x "$DESKTOP_FILE"
+if command -v update-desktop-database >/dev/null 2>&1; then
+    update-desktop-database "$HOME/.local/share/applications" 2>/dev/null || true
+fi
+
+# 6. Post-install Smoke Test Verification
+echo "[6/6] Running post-install verification smoke test..."
+"$PYTHON_BIN" -c "
+import sys
+sys.path.insert(0, '$HERMES_HOME/plugins/antigravity-provider/src')
+import antigravity_provider.router.web.server
+print('HERMES_HUB_LINUX_VERIFY_OK')
+" || {
+    echo "❌ Error: Post-install verification failed!" >&2
+    exit 14
+}
+
+echo ""
+echo "======================================================================"
+echo "       HERMES HUB SUCCESSFULLY INSTALLED ON LINUX!                    "
+echo "======================================================================"
+echo "Application Launcher : $LAUNCHER_BIN"
+echo "Desktop Shortcut     : $DESKTOP_FILE"
+echo ""
+echo "To launch the Web Application window:"
+echo "  $LAUNCHER_BIN"
+echo ""
+echo "Or open 'Hermes Hub Web' from your Applications menu."
+echo "======================================================================"
+exit 0
diff --git a/installer/uninstall-linux.sh b/installer/uninstall-linux.sh
new file mode 100644
index 0000000..e7e8fa3
--- /dev/null
+++ b/installer/uninstall-linux.sh
@@ -0,0 +1,60 @@
+#!/usr/bin/env bash
+# ==============================================================================
+# Hermes Hub — Linux Uninstaller
+# Removes application files, plugin integration, launcher and .desktop shortcuts.
+# Preserves user data and credentials by default unless --purge-user-data is passed.
+# ==============================================================================
+
+set -e
+
+DEFAULT_HERMES_HOME="$HOME/.hermes"
+HERMES_HOME="${HERMES_HOME:-$DEFAULT_HERMES_HOME}"
+
+PURGE_USER_DATA=false
+for arg in "$@"; do
+    if [ "$arg" = "--purge-user-data" ] || [ "$arg" = "-p" ]; then
+        PURGE_USER_DATA=true
+    fi
+done
+
+echo "======================================================================"
+echo "           HERMES HUB UNINSTALLER (Linux / POSIX)                     "
+echo "======================================================================"
+echo "Hermes Home : $HERMES_HOME"
+echo ""
+
+# 1. Remove Plugin Integration
+echo "[1/3] Removing plugin integration..."
+if [ -d "$HERMES_HOME/plugins/antigravity-provider" ]; then
+    rm -rf "$HERMES_HOME/plugins/antigravity-provider"
+    echo "      Removed $HERMES_HOME/plugins/antigravity-provider"
+fi
+
+# 2. Remove Launchers and Shortcuts
+echo "[2/3] Removing application launchers and desktop entries..."
+rm -f "$HOME/.local/bin/hermes-hub-web"
+rm -f "$HERMES_HOME/bin/hermes-hub-web"
+rm -f "$HOME/.local/share/applications/hermes-hub-web.desktop"
+
+if command -v update-desktop-database >/dev/null 2>&1; then
+    update-desktop-database "$HOME/.local/share/applications" 2>/dev/null || true
+fi
+
+# 3. User Data Handling
+if [ "$PURGE_USER_DATA" = "true" ]; then
+    echo "[3/3] Purging user data (--purge-user-data specified)..."
+    rm -f "$HERMES_HOME/config/router_profiles.yaml"
+    rm -rf "$HERMES_HOME/agy_profiles"
+    rm -rf "$HERMES_HOME/codex_profiles"
+    rm -rf "$HERMES_HOME/opencode_profiles"
+    echo "      User configuration and profiles purged."
+else
+    echo "[3/3] Preserving user data and credentials."
+    echo "      Your router profiles, auth keys, and settings in $HERMES_HOME remain intact."
+fi
+
+echo ""
+echo "======================================================================"
+echo "       HERMES HUB UNINSTALLED SUCCESSFULLY FROM LINUX                 "
+echo "======================================================================"
+exit 0
diff --git a/launcher/HermesHub.exe b/launcher/HermesHub.exe
index c869c42..7e84bcd 100644
Binary files a/launcher/HermesHub.exe and b/launcher/HermesHub.exe differ
diff --git a/launcher/HermesHubWeb.cs b/launcher/HermesHubWeb.cs
new file mode 100644
index 0000000..8c80783
--- /dev/null
+++ b/launcher/HermesHubWeb.cs
@@ -0,0 +1,326 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Net;
+using System.Text;
+using System.Threading;
+using System.Windows.Forms;
+using Microsoft.Win32;
+
+namespace HermesHub
+{
+    public static class WebLauncher
+    {
+        [STAThread]
+        public static void Main(string[] args)
+        {
+            Application.EnableVisualStyles();
+            Application.SetCompatibleTextRenderingDefault(false);
+
+            string localAppData = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
+            string hermesHome = Environment.GetEnvironmentVariable("HERMES_HOME");
+            if (string.IsNullOrEmpty(hermesHome))
+            {
+                hermesHome = Path.Combine(localAppData, "hermes");
+            }
+
+            // 1. Determine Web API Host and Port from hub_settings.json or default
+            string host = "127.0.0.1";
+            int port = 5800;
+            string settingsFile = Path.Combine(hermesHome, "hub_settings.json");
+            if (File.Exists(settingsFile))
+            {
+                try
+                {
+                    string json = File.ReadAllText(settingsFile, Encoding.UTF8);
+                    int pIdx = json.IndexOf("\"web_api_port\":", StringComparison.OrdinalIgnoreCase);
+                    if (pIdx >= 0)
+                    {
+                        int colon = json.IndexOf(':', pIdx);
+                        int comma = json.IndexOfAny(new char[] { ',', '}', '\r', '\n' }, colon + 1);
+                        if (colon >= 0 && comma > colon)
+                        {
+                            string pStr = json.Substring(colon + 1, comma - colon - 1).Trim();
+                            int parsedPort;
+                            if (int.TryParse(pStr, out parsedPort) && parsedPort > 0 && parsedPort < 65536)
+                            {
+                                port = parsedPort;
+                            }
+                        }
+                    }
+                    int hIdx = json.IndexOf("\"web_api_host\":", StringComparison.OrdinalIgnoreCase);
+                    if (hIdx >= 0)
+                    {
+                        int q1 = json.IndexOf('"', hIdx + 15);
+                        int q2 = json.IndexOf('"', q1 + 1);
+                        if (q1 >= 0 && q2 > q1)
+                        {
+                            string hStr = json.Substring(q1 + 1, q2 - q1 - 1).Trim();
+                            if (!string.IsNullOrEmpty(hStr) && hStr != "0.0.0.0")
+                            {
+                                host = hStr;
+                            }
+                        }
+                    }
+                }
+                catch { }
+            }
+
+            string targetUrl = string.Format("http://{0}:{1}/", host, port);
+            string healthUrl = string.Format("http://{0}:{1}/api/health", host, port);
+
+            // 2. Check if server is already running and healthy
+            bool serverWasAlreadyRunning = IsServerHealthy(healthUrl);
+            Process serverProcess = null;
+
+            if (!serverWasAlreadyRunning)
+            {
+                // Find Python
+                string hermesPythonW = Path.Combine(hermesHome, @"hermes-agent\venv\Scripts\pythonw.exe");
+                string hermesPython = Path.Combine(hermesHome, @"hermes-agent\venv\Scripts\python.exe");
+                string exe = File.Exists(hermesPythonW) ? hermesPythonW : hermesPython;
+
+                if (!File.Exists(exe))
+                {
+                    MessageBox.Show(
+                        "Hermes Python not found:\n" + exe + "\n\nPlease install Hermes Agent first.",
+                        "Hermes Hub", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    return;
+                }
+
+                string pluginSrc = Path.Combine(hermesHome, @"plugins\antigravity-provider\src");
+                string agentDir = Path.Combine(hermesHome, "hermes-agent");
+                string baseDir = AppDomain.CurrentDomain.BaseDirectory;
+                string hubSrc = Path.GetFullPath(Path.Combine(baseDir, @"..\src"));
+
+                StringBuilder script = new StringBuilder();
+                script.AppendLine("import sys");
+                if (Directory.Exists(pluginSrc))
+                    script.AppendLine("sys.path.insert(0, r'" + pluginSrc.Replace('\\', '/') + "')");
+                if (Directory.Exists(agentDir))
+                    script.AppendLine("sys.path.insert(0, r'" + agentDir.Replace('\\', '/') + "')");
+                if (Directory.Exists(hubSrc))
+                    script.AppendLine("sys.path.insert(0, r'" + hubSrc.Replace('\\', '/') + "')");
+                script.AppendLine("from antigravity_provider.router.web.server import run_server");
+                script.AppendLine("run_server()");
+
+                string entryScript = Path.Combine(hermesHome, "hermes_hub_web_entry.py");
+                try
+                {
+                    File.WriteAllText(entryScript, script.ToString(), Encoding.UTF8);
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show("Cannot write entry script:\n" + ex.Message, "Hermes Hub", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    return;
+                }
+
+                ProcessStartInfo serverPsi = new ProcessStartInfo();
+                serverPsi.FileName = exe;
+                serverPsi.Arguments = "\"" + entryScript + "\"";
+                serverPsi.WorkingDirectory = hermesHome;
+                serverPsi.UseShellExecute = false;
+                serverPsi.CreateNoWindow = true;
+                serverPsi.WindowStyle = ProcessWindowStyle.Hidden;
+
+                try
+                {
+                    serverProcess = Process.Start(serverPsi);
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show("Failed to start Hermes Hub web server:\n" + ex.Message, "Hermes Hub", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    return;
+                }
+
+                // 3. Poll /api/health with timeout (up to 15s)
+                bool ready = false;
+                for (int i = 0; i < 75; i++)
+                {
+                    if (IsServerHealthy(healthUrl))
+                    {
+                        ready = true;
+                        break;
+                    }
+                    if (serverProcess.HasExited)
+                    {
+                        MessageBox.Show("Hermes Hub web server process terminated unexpectedly.", "Hermes Hub", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                        return;
+                    }
+                    Thread.Sleep(200);
+                }
+
+                if (!ready)
+                {
+                    MessageBox.Show("Hermes Hub web server failed to respond within 15 seconds.", "Hermes Hub", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    if (serverProcess != null && !serverProcess.HasExited)
+                    {
+                        try { serverProcess.Kill(); } catch { }
+                    }
+                    return;
+                }
+            }
+
+            // 4. Locate browser in strict priority: Edge -> Chrome -> Chromium registry -> Fallback
+            string browserPath = FindChromiumBrowser();
+            Process browserProc = null;
+
+            if (!string.IsNullOrEmpty(browserPath))
+            {
+                ProcessStartInfo browserPsi = new ProcessStartInfo();
+                browserPsi.FileName = browserPath;
+                browserPsi.Arguments = string.Format("--app=\"{0}\" --window-size=1400,900", targetUrl);
+                browserPsi.UseShellExecute = false;
+
+                try
+                {
+                    browserProc = Process.Start(browserPsi);
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show(
+                        "Не удалось запустить браузер в режиме приложения:\n" + ex.Message + "\n\nОткрываю стандартный браузер.",
+                        "Hermes Hub", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+                    Process.Start(targetUrl);
+                }
+            }
+            else
+            {
+                // No Chromium browser found
+                MessageBox.Show(
+                    "Браузер с поддержкой режима приложения (Microsoft Edge или Google Chrome) не найден.\n\n" +
+                    "Интерфейс будет открыт в стандартном браузере с адресной строкой.",
+                    "Hermes Hub", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                try
+                {
+                    Process.Start(targetUrl);
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show("Не удалось открыть браузер: " + ex.Message, "Hermes Hub", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                }
+            }
+
+            // 5. Server Lifecycle:
+            // If the server was started by this launcher session and browser is tracked,
+            // wait for browser window to close, then gracefully terminate server process.
+            if (!serverWasAlreadyRunning && serverProcess != null && !serverProcess.HasExited && browserProc != null)
+            {
+                try
+                {
+                    browserProc.WaitForExit();
+                }
+                catch { }
+
+                try
+                {
+                    if (!serverProcess.HasExited)
+                    {
+                        serverProcess.Kill();
+                    }
+                }
+                catch { }
+            }
+        }
+
+        public static bool IsServerHealthy(string url)
+        {
+            try
+            {
+                HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
+                req.Timeout = 800;
+                req.Method = "GET";
+                using (HttpWebResponse resp = (HttpWebResponse)req.GetResponse())
+                {
+                    if (resp.StatusCode == HttpStatusCode.OK)
+                    {
+                        using (StreamReader r = new StreamReader(resp.GetResponseStream(), Encoding.UTF8))
+                        {
+                            string txt = r.ReadToEnd();
+                            return txt.Contains("\"ok\":true") || txt.Contains("\"ok\": true");
+                        }
+                    }
+                }
+            }
+            catch { }
+            return false;
+        }
+
+        public static string FindChromiumBrowser()
+        {
+            // 1. Microsoft Edge
+            string[] edgePaths = new string[]
+            {
+                @"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe",
+                @"C:\Program Files\Microsoft\Edge\Application\msedge.exe",
+                Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), @"Microsoft\Edge\Application\msedge.exe")
+            };
+            foreach (string p in edgePaths)
+            {
+                if (File.Exists(p)) return p;
+            }
+
+            string edgeReg = GetAppPathFromRegistry("msedge.exe");
+            if (!string.IsNullOrEmpty(edgeReg) && File.Exists(edgeReg)) return edgeReg;
+
+            // 2. Google Chrome
+            string[] chromePaths = new string[]
+            {
+                @"C:\Program Files\Google\Chrome\Application\chrome.exe",
+                @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe",
+                Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), @"Google\Chrome\Application\chrome.exe")
+            };
+            foreach (string p in chromePaths)
+            {
+                if (File.Exists(p)) return p;
+            }
+
+            string chromeReg = GetAppPathFromRegistry("chrome.exe");
+            if (!string.IsNullOrEmpty(chromeReg) && File.Exists(chromeReg)) return chromeReg;
+
+            // 3. Brave / Vivaldi / Chromium
+            string[] otherPaths = new string[]
+            {
+                @"C:\Program Files\BraveSoftware\Brave-Browser\Application\brave.exe",
+                Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), @"BraveSoftware\Brave-Browser\Application\brave.exe"),
+                @"C:\Program Files\Vivaldi\Application\vivaldi.exe",
+                Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), @"Vivaldi\Application\vivaldi.exe")
+            };
+            foreach (string p in otherPaths)
+            {
+                if (File.Exists(p)) return p;
+            }
+
+            string braveReg = GetAppPathFromRegistry("brave.exe");
+            if (!string.IsNullOrEmpty(braveReg) && File.Exists(braveReg)) return braveReg;
+
+            return null;
+        }
+
+        private static string GetAppPathFromRegistry(string exeName)
+        {
+            try
+            {
+                string key = @"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\" + exeName;
+                using (RegistryKey rk = Registry.LocalMachine.OpenSubKey(key))
+                {
+                    if (rk != null)
+                    {
+                        object val = rk.GetValue(null);
+                        if (val != null) return val.ToString();
+                    }
+                }
+                using (RegistryKey rk = Registry.CurrentUser.OpenSubKey(key))
+                {
+                    if (rk != null)
+                    {
+                        object val = rk.GetValue(null);
+                        if (val != null) return val.ToString();
+                    }
+                }
+            }
+            catch { }
+            return null;
+        }
+    }
+}
diff --git a/launcher/HermesHubWeb.exe b/launcher/HermesHubWeb.exe
new file mode 100644
index 0000000..d0434a2
Binary files /dev/null and b/launcher/HermesHubWeb.exe differ
diff --git a/launcher/hermes-hub-web.sh b/launcher/hermes-hub-web.sh
new file mode 100644
index 0000000..7333d76
--- /dev/null
+++ b/launcher/hermes-hub-web.sh
@@ -0,0 +1,134 @@
+#!/usr/bin/env bash
+# ==============================================================================
+# Hermes Hub — Linux Web Application Launcher
+# Starts the background web server if not already active, waits for /api/health,
+# and opens the UI in application window mode (--app=URL) or handles headless mode.
+# ==============================================================================
+
+set -e
+
+DEFAULT_HERMES_HOME="$HOME/.hermes"
+HERMES_HOME="${HERMES_HOME:-$DEFAULT_HERMES_HOME}"
+
+# 1. Discover Python Runtime
+PYTHON_BIN=""
+if [ -f "$HERMES_HOME/hermes-agent/venv/bin/python3" ]; then
+    PYTHON_BIN="$HERMES_HOME/hermes-agent/venv/bin/python3"
+elif [ -f "$HERMES_HOME/hermes-agent/venv/bin/python" ]; then
+    PYTHON_BIN="$HERMES_HOME/hermes-agent/venv/bin/python"
+elif command -v python3 >/dev/null 2>&1; then
+    PYTHON_BIN="$(command -v python3)"
+elif command -v python >/dev/null 2>&1; then
+    PYTHON_BIN="$(command -v python)"
+else
+    echo "❌ Error: Python 3 not found on system." >&2
+    exit 1
+fi
+
+# 2. Configure Environment and Read Settings (Host/Port)
+export PYTHONPATH="$HERMES_HOME/plugins/antigravity-provider/src:$HERMES_HOME/hermes-agent:$PYTHONPATH"
+
+HOST="127.0.0.1"
+PORT=5800
+
+SETTINGS_FILE="$HERMES_HOME/hub_settings.json"
+if [ -f "$SETTINGS_FILE" ]; then
+    PARSED_PORT="$("$PYTHON_BIN" -c "import json; print(json.load(open('$SETTINGS_FILE')).get('web_api_port', 5800))" 2>/dev/null || echo 5800)"
+    if [ -n "$PARSED_PORT" ] && [ "$PARSED_PORT" -gt 0 ] 2>/dev/null; then
+        PORT="$PARSED_PORT"
+    fi
+    PARSED_HOST="$("$PYTHON_BIN" -c "import json; h = json.load(open('$SETTINGS_FILE')).get('web_api_host', '127.0.0.1'); print('127.0.0.1' if h in ('0.0.0.0', '') else h)" 2>/dev/null || echo '127.0.0.1')"
+    if [ -n "$PARSED_HOST" ]; then
+        HOST="$PARSED_HOST"
+    fi
+fi
+
+TARGET_URL="http://$HOST:$PORT/"
+HEALTH_URL="http://$HOST:$PORT/api/health"
+
+# Function to check server health
+check_health() {
+    "$PYTHON_BIN" -c "
+import urllib.request, json
+try:
+    req = urllib.request.urlopen('$HEALTH_URL', timeout=0.8)
+    data = json.loads(req.read().decode('utf-8'))
+    sys.exit(0 if data.get('ok') is True else 1)
+except Exception:
+    import sys
+    sys.exit(1)
+" >/dev/null 2>&1
+}
+
+# 3. Start Web Server if not already active
+SERVER_STARTED_BY_US=false
+if ! check_health; then
+    echo "Starting Hermes Hub Web Server in background..."
+    LOG_FILE="$HERMES_HOME/hermes_web_server.log"
+    nohup "$PYTHON_BIN" -m antigravity_provider.router.web > "$LOG_FILE" 2>&1 &
+    SERVER_PID=$!
+    SERVER_STARTED_BY_US=true
+
+    # Wait for server readiness (polling /api/health)
+    READY=false
+    for i in $(seq 1 75); do
+        if check_health; then
+            READY=true
+            break
+        fi
+        if ! kill -0 "$SERVER_PID" 2>/dev/null; then
+            echo "❌ Error: Web server process terminated unexpectedly. Check $LOG_FILE" >&2
+            exit 1
+        fi
+        sleep 0.2
+    done
+
+    if [ "$READY" != "true" ]; then
+        echo "❌ Error: Web server failed to respond at $HEALTH_URL within 15 seconds." >&2
+        exit 1
+    fi
+fi
+
+# 4. Headless Server Check (SSH / No Graphical Display)
+if [ -z "$DISPLAY" ] && [ -z "$WAYLAND_DISPLAY" ]; then
+    echo "======================================================================"
+    echo "  Hermes Hub Web Server is running (Headless Mode)"
+    echo "  Web Interface URL: $TARGET_URL"
+    echo ""
+    echo "  To access the interface from your local computer, forward the port:"
+    echo "    ssh -L $PORT:127.0.0.1:$PORT user@server"
+    echo ""
+    echo "  Then open in your browser:"
+    echo "    $TARGET_URL"
+    echo "======================================================================"
+    exit 0
+fi
+
+# 5. Graphical Environment: Search for Chromium-based browser in priority order
+CHROMIUM_BIN=""
+
+for b in google-chrome google-chrome-stable chromium chromium-browser microsoft-edge microsoft-edge-stable brave-browser; do
+    if command -v "$b" >/dev/null 2>&1; then
+        CHROMIUM_BIN="$(command -v "$b")"
+        break
+    fi
+done
+
+if [ -n "$CHROMIUM_BIN" ]; then
+    # Launch in Application Window mode without address bar, tabs, or menus
+    "$CHROMIUM_BIN" --app="$TARGET_URL" --window-size=1400,900 "$@"
+else
+    # Fallback to standard default browser
+    echo "Запуск в обычном браузере: режим приложения (без адресной строки) требует Google Chrome, Chromium или Microsoft Edge."
+    if command -v xdg-open >/dev/null 2>&1; then
+        xdg-open "$TARGET_URL"
+    elif command -v sensible-browser >/dev/null 2>&1; then
+        sensible-browser "$TARGET_URL"
+    elif command -v firefox >/dev/null 2>&1; then
+        firefox "$TARGET_URL"
+    else
+        echo "Please open $TARGET_URL in your web browser."
+    fi
+fi
+
+exit 0
diff --git a/scripts/install.ps1 b/scripts/install.ps1
index d7d2884..0e1de1e 100644
--- a/scripts/install.ps1
+++ b/scripts/install.ps1
@@ -58,6 +58,11 @@ if (Test-Path $LauncherExe) {
     Copy-Item -Path $LauncherExe -Destination (Join-Path $TargetDir "HermesHub.exe") -Force
     Copy-Item -Path $LauncherExe -Destination (Join-Path $HermesHome "HermesHub.exe") -Force
 }
+$WebLauncherExe = Join-Path $RepoRoot "launcher\HermesHubWeb.exe"
+if (Test-Path $WebLauncherExe) {
+    Copy-Item -Path $WebLauncherExe -Destination (Join-Path $TargetDir "HermesHubWeb.exe") -Force
+    Copy-Item -Path $WebLauncherExe -Destination (Join-Path $HermesHome "HermesHubWeb.exe") -Force
+}
 
 # 5. Deploy Plugin Integration into Hermes
 Write-Host "[4/6] Deploying plugin components to Hermes..." -ForegroundColor Yellow
diff --git a/scripts/uninstall.ps1 b/scripts/uninstall.ps1
index 9b23f8f..78dd6f6 100644
--- a/scripts/uninstall.ps1
+++ b/scripts/uninstall.ps1
@@ -26,6 +26,10 @@ $HomeLauncher = Join-Path $HermesHome "HermesHub.exe"
 if (Test-Path $HomeLauncher) {
     Remove-Item -Path $HomeLauncher -Force -ErrorAction SilentlyContinue
 }
+$HomeWebLauncher = Join-Path $HermesHome "HermesHubWeb.exe"
+if (Test-Path $HomeWebLauncher) {
+    Remove-Item -Path $HomeWebLauncher -Force -ErrorAction SilentlyContinue
+}
 
 Write-Host "[2/3] Removing plugin integration..." -ForegroundColor Gray
 $PluginDir = Join-Path $HermesHome "plugins\antigravity-provider"
diff --git a/tests/test_installer_windows_and_linux.py b/tests/test_installer_windows_and_linux.py
new file mode 100644
index 0000000..6263858
--- /dev/null
+++ b/tests/test_installer_windows_and_linux.py
@@ -0,0 +1,110 @@
+"""
+Hermes Hub — Windows & Linux Installers and Launchers Test Suite.
+Verifies requirements of Task A19.
+"""
+
+from __future__ import annotations
+
+import os
+from pathlib import Path
+import subprocess
+import pytest
+
+REPO_ROOT = Path(__file__).resolve().parent.parent
+INSTALLER_DIR = REPO_ROOT / "installer"
+LAUNCHER_DIR = REPO_ROOT / "launcher"
+
+
+def test_windows_csharp_launchers_and_setup_compile():
+    """Verify HermesHub.cs, HermesHubWeb.cs, and HermesHubSetup.cs compile without errors on Windows."""
+    csc_path = r"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe"
+    if not os.path.isfile(csc_path):
+        csc_path = r"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
+
+    if not os.path.isfile(csc_path):
+        pytest.skip("csc.exe compiler not found in standard .NET Framework location")
+
+    temp_out = REPO_ROOT / "artifacts" / "test_compile"
+    temp_out.mkdir(parents=True, exist_ok=True)
+
+    # 1. Compile HermesHub.cs
+    hub_cs = LAUNCHER_DIR / "HermesHub.cs"
+    res1 = subprocess.run([
+        csc_path, "/target:winexe", f"/out:{temp_out / 'HermesHub.exe'}",
+        "/r:System.Windows.Forms.dll", "/r:System.Drawing.dll", str(hub_cs)
+    ], capture_output=True, text=True)
+    assert res1.returncode == 0, f"HermesHub.cs compilation failed: {res1.stdout}\n{res1.stderr}"
+
+    # 2. Compile HermesHubWeb.cs
+    hub_web_cs = LAUNCHER_DIR / "HermesHubWeb.cs"
+    res2 = subprocess.run([
+        csc_path, "/target:winexe", f"/out:{temp_out / 'HermesHubWeb.exe'}",
+        "/r:System.Windows.Forms.dll", "/r:System.Drawing.dll", str(hub_web_cs)
+    ], capture_output=True, text=True)
+    assert res2.returncode == 0, f"HermesHubWeb.cs compilation failed: {res2.stdout}\n{res2.stderr}"
+
+    # 3. Compile HermesHubSetup.cs
+    setup_cs = INSTALLER_DIR / "HermesHubSetup.cs"
+    res3 = subprocess.run([
+        csc_path, "/target:winexe", f"/out:{temp_out / 'HermesHubSetup.exe'}",
+        "/r:System.Windows.Forms.dll", "/r:System.Drawing.dll", str(setup_cs)
+    ], capture_output=True, text=True)
+    assert res3.returncode == 0, f"HermesHubSetup.cs compilation failed: {res3.stdout}\n{res3.stderr}"
+
+
+def test_windows_launcher_browser_search_and_health_check():
+    """Verify HermesHubWeb.cs includes Edge/Chrome detection, --app mode, and /api/health polling."""
+    web_cs = (LAUNCHER_DIR / "HermesHubWeb.cs").read_text(encoding="utf-8")
+
+    assert "msedge.exe" in web_cs
+    assert "chrome.exe" in web_cs
+    assert "--app=" in web_cs
+    assert "/api/health" in web_cs
+    assert "IsServerHealthy" in web_cs
+    assert "HermesHubWeb" in web_cs or "WebLauncher" in web_cs
+
+
+def test_windows_installer_creates_both_shortcuts():
+    """Verify HermesHubSetup.cs creates both Web and Desktop shortcuts."""
+    setup_cs = (INSTALLER_DIR / "HermesHubSetup.cs").read_text(encoding="utf-8")
+
+    assert "Hermes Hub (Web).lnk" in setup_cs
+    assert "Hermes Hub (Desktop).lnk" in setup_cs
+    assert "HermesHubWeb.exe" in setup_cs
+    assert "HermesHub.exe" in setup_cs
+
+
+def test_linux_installer_script_structure():
+    """Verify install-linux.sh contains prerequisite checks, mirroring, manifest, and .desktop setup."""
+    install_sh = (INSTALLER_DIR / "install-linux.sh").read_text(encoding="utf-8")
+
+    assert "#!/usr/bin/env bash" in install_sh
+    assert "deployment_manifest.json" in install_sh
+    assert "hermes-hub-web.desktop" in install_sh
+    assert "HERMES_HOME" in install_sh
+    assert "antigravity-provider" in install_sh
+
+
+def test_linux_launcher_script_headless_and_app_mode():
+    """Verify hermes-hub-web.sh checks DISPLAY, prints SSH port forwarding on headless, and uses --app on desktop."""
+    launcher_sh = (LAUNCHER_DIR / "hermes-hub-web.sh").read_text(encoding="utf-8")
+
+    assert "#!/usr/bin/env bash" in launcher_sh
+    assert "DISPLAY" in launcher_sh
+    assert "WAYLAND_DISPLAY" in launcher_sh
+    assert "ssh -L" in launcher_sh
+    assert "127.0.0.1" in launcher_sh
+    assert "--app=" in launcher_sh
+    assert "/api/health" in launcher_sh
+    assert "google-chrome" in launcher_sh or "chromium" in launcher_sh or "microsoft-edge" in launcher_sh
+
+
+def test_linux_uninstaller_preserves_user_data():
+    """Verify uninstall-linux.sh preserves user config, keys, and profiles by default."""
+    uninstall_sh = (INSTALLER_DIR / "uninstall-linux.sh").read_text(encoding="utf-8")
+
+    assert "#!/usr/bin/env bash" in uninstall_sh
+    assert "PURGE_USER_DATA" in uninstall_sh
+    assert "--purge-user-data" in uninstall_sh
+    assert "Preserving user data and credentials" in uninstall_sh
+    assert "hermes-hub-web.desktop" in uninstall_sh