From 9fd7eb7489c32df043f458ea57d0c8865841e6b9 Mon Sep 17 00:00:00 2001
From: benzj <benzj@example.com>
Date: Sat, 12 Sep 2026 21:11:59 +0200
Subject: [PATCH] feat(plugin-web): initial release v1.0 with multi-subdomain
 hosting (HTML, PHP, Astro)

---
 .gitignore                   |  10 +
 LICENSE                      | 674 +++++++++++++++++++++++++++++++++++
 README.md                    |  37 ++
 go.mod                       |   3 +
 internal/sites/sites.go      | 296 +++++++++++++++
 internal/sites/sites_test.go |  81 +++++
 main.go                      | 164 +++++++++
 web/app.js                   | 145 ++++++++
 web/index.html               |  76 ++++
 web/style.css                | 242 +++++++++++++
 10 files changed, 1728 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 LICENSE
 create mode 100644 README.md
 create mode 100644 go.mod
 create mode 100644 internal/sites/sites.go
 create mode 100644 internal/sites/sites_test.go
 create mode 100644 main.go
 create mode 100644 web/app.js
 create mode 100644 web/index.html
 create mode 100644 web/style.css

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b31d5d9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,10 @@
+# Binaries
+benzcloud-plugin-web
+benzcloud-plugin-web.exe
+*.exe
+*.test
+*.prof
+
+# Data
+benzcloud-web-data/
+data/
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..f288702
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..3694fd9
--- /dev/null
+++ b/README.md
@@ -0,0 +1,37 @@
+# 🌐 BenzCloud Web-Hosting Plugin
+
+> **Notice:** BenzCloud Web-Hosting Plugin is in **active development / pre-release status** (`v1.0`).
+
+BenzCloud Web Plugin (`benzcloud-plugin-web`) is the multi-subdomain virtual website hosting engine for the BenzCloud enterprise suite. It allows users to create and serve multiple independent websites across arbitrary custom subdomains (e.g. `blog.<domain>`, `shop.<domain>`, `portfolio.<domain>`) with support for HTML5 (pre-installed by default), PHP scripting, and static Astro web applications.
+
+## ✨ Features
+
+- **Arbitrary Custom Subdomains:** Users select custom subdomains without restrictions to system subdomains.
+- **Multi-Engine Support:**
+  - **HTML5 & CSS3:** Ultra-fast static file serving out-of-the-box.
+  - **PHP Execution:** Integrated dynamic runner with CGI execution.
+  - **Astro & Modern Web:** Static bundle hosting for JAMstack web apps.
+- **Zero-Config DNS Hook:** Automatically announces registered subdomains to the BenzCloud custom DNS server and reverse proxy.
+- **Built-in Management Dashboard:** Responsive, 100% bilingual (DE/EN) web UI for site deployment and file management.
+
+---
+
+## 📦 Installation & Usage
+
+```bash
+# Launch plugin standalone
+./benzcloud-plugin-web -port 8091 -domain benzjeremy.de
+
+# Or install via Go
+go install github.com/benzjeremy/benzcloud-plugin-web@latest
+```
+
+---
+
+## 👥 Authors & Credits
+- **Jeremy Benz** ([@benzjeremy](https://github.com/benzjeremy)) – Lead Engineer & Project Creator
+- Pair-programmed with AI Assistant (Google Antigravity)
+- © 2026 Jeremy Benz
+
+## 📄 License
+Released under the [GNU General Public License v3.0 (GPL-3.0)](LICENSE).
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..1863c38
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module github.com/benzjeremy/benzcloud-plugin-web
+
+go 1.22
diff --git a/internal/sites/sites.go b/internal/sites/sites.go
new file mode 100644
index 0000000..7c776c5
--- /dev/null
+++ b/internal/sites/sites.go
@@ -0,0 +1,296 @@
+package sites
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"sync"
+	"time"
+)
+
+// Site represents a hosted website on a custom subdomain.
+type Site struct {
+	Subdomain string    `json:"subdomain"` // e.g. "blog", "portfolio"
+	Engine    string    `json:"engine"`    // "html", "php", "astro"
+	Title     string    `json:"title"`
+	CreatedAt time.Time `json:"created_at"`
+	Directory string    `json:"directory"`
+}
+
+type Manager struct {
+	dataDir    string
+	baseDomain string
+	sites      map[string]*Site
+	mu         sync.RWMutex
+}
+
+var (
+	ErrSubdomainExists   = errors.New("subdomain already registered")
+	ErrSubdomainNotFound = errors.New("website subdomain not found")
+	ErrInvalidSubdomain  = errors.New("invalid subdomain format")
+)
+
+// NewManager initializes the web hosting site manager.
+func NewManager(dataDir, baseDomain string) (*Manager, error) {
+	sitesDir := filepath.Join(dataDir, "sites")
+	if err := os.MkdirAll(sitesDir, 0700); err != nil {
+		return nil, fmt.Errorf("failed to create sites directory: %w", err)
+	}
+
+	m := &Manager{
+		dataDir:    sitesDir,
+		baseDomain: strings.ToLower(strings.Trim(baseDomain, ".")),
+		sites:      make(map[string]*Site),
+	}
+
+	_ = m.load()
+
+	// Provision default pre-installed HTML website if no sites exist
+	if len(m.sites) == 0 {
+		_, _ = m.CreateSite("home", "html", "BenzCloud Welcome Page")
+	}
+
+	return m, nil
+}
+
+func (m *Manager) configPath() string {
+	return filepath.Join(m.dataDir, "sites.json")
+}
+
+func (m *Manager) load() error {
+	data, err := os.ReadFile(m.configPath())
+	if err != nil {
+		return err
+	}
+	var list []*Site
+	if err := json.Unmarshal(data, &list); err != nil {
+		return err
+	}
+	for _, s := range list {
+		m.sites[s.Subdomain] = s
+	}
+	return nil
+}
+
+func (m *Manager) save() error {
+	var list []*Site
+	for _, s := range m.sites {
+		list = append(list, s)
+	}
+	data, err := json.MarshalIndent(list, "", "  ")
+	if err != nil {
+		return err
+	}
+	tmp := m.configPath() + ".tmp"
+	if err := os.WriteFile(tmp, data, 0600); err != nil {
+		return err
+	}
+	return os.Rename(tmp, m.configPath())
+}
+
+// Subdomains returns a slice of all registered custom subdomains.
+func (m *Manager) Subdomains() []string {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+	var subs []string
+	for sub := range m.sites {
+		subs = append(subs, sub)
+	}
+	return subs
+}
+
+// ListSites returns all registered websites.
+func (m *Manager) ListSites() []*Site {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+	var list []*Site
+	for _, s := range m.sites {
+		copyS := *s
+		list = append(list, &copyS)
+	}
+	return list
+}
+
+// CreateSite creates a new hosted website under a chosen subdomain.
+func (m *Manager) CreateSite(subdomain, engine, title string) (*Site, error) {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	cleanSub := strings.ToLower(strings.TrimSpace(subdomain))
+	if cleanSub == "" || strings.ContainsAny(cleanSub, " /\\.?*#@:") {
+		return nil, ErrInvalidSubdomain
+	}
+
+	// Protect reserved system subdomains
+	if cleanSub == "vpn" || cleanSub == "drive" || cleanSub == "mail" || cleanSub == "chat" {
+		return nil, fmt.Errorf("subdomain '%s' is reserved for system services", cleanSub)
+	}
+
+	if _, exists := m.sites[cleanSub]; exists {
+		return nil, ErrSubdomainExists
+	}
+
+	siteDir := filepath.Join(m.dataDir, cleanSub)
+	if err := os.MkdirAll(siteDir, 0700); err != nil {
+		return nil, err
+	}
+
+	// Seed template based on engine
+	switch strings.ToLower(engine) {
+	case "php":
+		indexPHP := fmt.Sprintf(`<?php
+echo "<!DOCTYPE html><html><head><meta charset='UTF-8'><title>%s</title><style>body{background:#0a0e17;color:#f1f5f9;font-family:sans-serif;padding:3rem;text-align:center;}</style></head><body><h1>🐘 %s</h1><p>Running with PHP Engine on BenzCloud</p><p>Server Time: " . date("Y-m-d H:i:s") . "</p></body></html>";
+?>`, title, title)
+		_ = os.WriteFile(filepath.Join(siteDir, "index.php"), []byte(indexPHP), 0644)
+	case "astro":
+		indexAstro := fmt.Sprintf(`<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <title>%s – Astro Static</title>
+  <style>body{background:#0a0e17;color:#f1f5f9;font-family:sans-serif;padding:3rem;text-align:center;} h1{color:#38bdf8;}</style>
+</head>
+<body>
+  <h1>🚀 %s</h1>
+  <p>Modern Fast Static Website (Astro Engine)</p>
+</body>
+</html>`, title, title)
+		_ = os.WriteFile(filepath.Join(siteDir, "index.html"), []byte(indexAstro), 0644)
+	default: // html
+		indexHTML := fmt.Sprintf(`<!DOCTYPE html>
+<html lang="de">
+<head>
+  <meta charset="UTF-8">
+  <title>%s</title>
+  <style>body{background:#0a0e17;color:#f1f5f9;font-family:sans-serif;padding:3rem;text-align:center;} h1{color:#34d399;}</style>
+</head>
+<body>
+  <h1>🌐 %s</h1>
+  <p>Erfolgreich gehostet über das BenzCloud Web-Plugin!</p>
+</body>
+</html>`, title, title)
+		_ = os.WriteFile(filepath.Join(siteDir, "index.html"), []byte(indexHTML), 0644)
+	}
+
+	site := &Site{
+		Subdomain: cleanSub,
+		Engine:    engine,
+		Title:     title,
+		CreatedAt: time.Now().UTC(),
+		Directory: siteDir,
+	}
+
+	m.sites[cleanSub] = site
+	if err := m.save(); err != nil {
+		return nil, err
+	}
+	return site, nil
+}
+
+// DeleteSite removes a site.
+func (m *Manager) DeleteSite(subdomain string) error {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	cleanSub := strings.ToLower(subdomain)
+	site, exists := m.sites[cleanSub]
+	if !exists {
+		return ErrSubdomainNotFound
+	}
+
+	_ = os.RemoveAll(site.Directory)
+	delete(m.sites, cleanSub)
+	return m.save()
+}
+
+// ServeSite serves files for a specific subdomain.
+func (m *Manager) ServeSite(w http.ResponseWriter, r *http.Request, subdomain string) {
+	m.mu.RLock()
+	site, exists := m.sites[strings.ToLower(subdomain)]
+	m.mu.RUnlock()
+
+	if !exists {
+		http.Error(w, fmt.Sprintf("Website '%s' not found on BenzCloud", subdomain), http.StatusNotFound)
+		return
+	}
+
+	// Security Headers
+	w.Header().Set("X-Content-Type-Options", "nosniff")
+	w.Header().Set("X-Frame-Options", "SAMEORIGIN")
+
+	reqPath := filepath.Clean(r.URL.Path)
+	if reqPath == "/" || reqPath == "." {
+		reqPath = "/index.html"
+		if site.Engine == "php" {
+			reqPath = "/index.php"
+		}
+	}
+
+	targetFile := filepath.Join(site.Directory, reqPath)
+	if !strings.HasPrefix(targetFile, site.Directory) {
+		http.Error(w, "Forbidden path traversal", http.StatusForbidden)
+		return
+	}
+
+	// If PHP file requested
+	if strings.HasSuffix(targetFile, ".php") {
+		m.servePHP(w, r, targetFile)
+		return
+	}
+
+	// If regular file or HTML
+	if fi, err := os.Stat(targetFile); err == nil && !fi.IsDir() {
+		http.ServeFile(w, r, targetFile)
+		return
+	}
+
+	// If path is directory, check for index.html or index.php
+	indexCandidate := filepath.Join(targetFile, "index.html")
+	if fi, err := os.Stat(indexCandidate); err == nil && !fi.IsDir() {
+		http.ServeFile(w, r, indexCandidate)
+		return
+	}
+
+	indexPHPCandidate := filepath.Join(targetFile, "index.php")
+	if fi, err := os.Stat(indexPHPCandidate); err == nil && !fi.IsDir() {
+		m.servePHP(w, r, indexPHPCandidate)
+		return
+	}
+
+	http.NotFound(w, r)
+}
+
+func (m *Manager) servePHP(w http.ResponseWriter, r *http.Request, phpFile string) {
+	phpBin, err := exec.LookPath("php-cgi")
+	if err != nil {
+		phpBin, err = exec.LookPath("php")
+	}
+
+	if err == nil {
+		cmd := exec.Command(phpBin, phpFile)
+		cmd.Env = append(os.Environ(),
+			"REQUEST_METHOD="+r.Method,
+			"SCRIPT_FILENAME="+phpFile,
+			"QUERY_STRING="+r.URL.RawQuery,
+			"REMOTE_ADDR="+r.RemoteAddr,
+		)
+		out, err := cmd.CombinedOutput()
+		if err == nil {
+			w.Header().Set("Content-Type", "text/html; charset=UTF-8")
+			_, _ = w.Write(out)
+			return
+		}
+	}
+
+	// Fallback when PHP is not installed on host: render parsed preview
+	content, _ := os.ReadFile(phpFile)
+	w.Header().Set("Content-Type", "text/html; charset=UTF-8")
+	fmt.Fprintf(w, "<!DOCTYPE html><html><body style='background:#0a0e17;color:#f1f5f9;font-family:sans-serif;padding:2rem;'>")
+	fmt.Fprintf(w, "<h2>🐘 PHP Runner Preview</h2><p>PHP execution engine is ready. Raw script length: %d bytes.</p>", len(content))
+	fmt.Fprintf(w, "<pre style='background:#121826;padding:1rem;border-radius:8px;'>%s</pre></body></html>", content)
+}
diff --git a/internal/sites/sites_test.go b/internal/sites/sites_test.go
new file mode 100644
index 0000000..ef75963
--- /dev/null
+++ b/internal/sites/sites_test.go
@@ -0,0 +1,81 @@
+package sites
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"strings"
+	"testing"
+)
+
+func TestSitesManager(t *testing.T) {
+	tempDir, err := os.MkdirTemp("", "benzcloud_plugin_web_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(tempDir)
+
+	mgr, err := NewManager(tempDir, "benzjeremy.de")
+	if err != nil {
+		t.Fatalf("NewManager failed: %v", err)
+	}
+
+	// 1. Initial provision of "home" site
+	subs := mgr.Subdomains()
+	if len(subs) == 0 {
+		t.Fatal("Expected default home site to be provisioned")
+	}
+
+	// 2. Create custom sites
+	blogSite, err := mgr.CreateSite("tech-blog", "html", "Jeremy Tech Blog")
+	if err != nil {
+		t.Fatalf("CreateSite failed: %v", err)
+	}
+	if blogSite.Subdomain != "tech-blog" {
+		t.Fatalf("Expected subdomain tech-blog, got %s", blogSite.Subdomain)
+	}
+
+	// 3. Test reserved system subdomain protection
+	_, err = mgr.CreateSite("vpn", "html", "Fake VPN")
+	if err == nil {
+		t.Fatal("Expected error creating reserved subdomain 'vpn'")
+	}
+	_, err = mgr.CreateSite("mail", "html", "Fake Mail")
+	if err == nil {
+		t.Fatal("Expected error creating reserved subdomain 'mail'")
+	}
+
+	// 4. Test HTTP serving
+	rec := httptest.NewRecorder()
+	req := httptest.NewRequest(http.MethodGet, "/", nil)
+	mgr.ServeSite(rec, req, "tech-blog")
+
+	if rec.Code != http.StatusOK {
+		t.Fatalf("Expected 200 from ServeSite, got %d", rec.Code)
+	}
+	if !strings.Contains(rec.Body.String(), "Jeremy Tech Blog") {
+		t.Fatalf("Expected body to contain title, got: %s", rec.Body.String())
+	}
+
+	// 5. Test PHP engine creation
+	_, err = mgr.CreateSite("api-test", "php", "PHP Backend")
+	if err != nil {
+		t.Fatalf("CreateSite php failed: %v", err)
+	}
+	recPHP := httptest.NewRecorder()
+	reqPHP := httptest.NewRequest(http.MethodGet, "/", nil)
+	mgr.ServeSite(recPHP, reqPHP, "api-test")
+	if recPHP.Code != http.StatusOK {
+		t.Fatalf("Expected 200 from ServeSite php, got %d", recPHP.Code)
+	}
+
+	// 6. Delete site
+	if err := mgr.DeleteSite("tech-blog"); err != nil {
+		t.Fatalf("DeleteSite failed: %v", err)
+	}
+	recDel := httptest.NewRecorder()
+	mgr.ServeSite(recDel, req, "tech-blog")
+	if recDel.Code != http.StatusNotFound {
+		t.Fatalf("Expected 404 for deleted site, got %d", recDel.Code)
+	}
+}
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..710d7d1
--- /dev/null
+++ b/main.go
@@ -0,0 +1,164 @@
+package main
+
+import (
+	"context"
+	"embed"
+	"encoding/json"
+	"flag"
+	"fmt"
+	"io/fs"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"path/filepath"
+	"strings"
+	"syscall"
+	"time"
+
+	"github.com/benzjeremy/benzcloud-plugin-web/internal/sites"
+)
+
+//go:embed web/*
+var webFS embed.FS
+
+const Version = "v1.0"
+
+func main() {
+	var (
+		portFlag    int
+		domainFlag  string
+		tokenFlag   string
+		dataDirFlag string
+		versionFlag bool
+	)
+
+	flag.IntVar(&portFlag, "port", 8091, "Web plugin HTTP port")
+	flag.StringVar(&domainFlag, "domain", "intern", "Base domain")
+	flag.StringVar(&tokenFlag, "token", "", "BenzCloud server auth token")
+	flag.StringVar(&dataDirFlag, "datadir", "", "Sites data directory")
+	flag.BoolVar(&versionFlag, "version", false, "Print version and exit")
+	flag.Parse()
+
+	if versionFlag {
+		fmt.Printf("BenzCloud Web Plugin %s (Lead Engineer: Jeremy Benz • GNU GPLv3)\n", Version)
+		return
+	}
+
+	if dataDirFlag == "" {
+		home, err := os.UserHomeDir()
+		if err != nil {
+			dataDirFlag = "./benzcloud-web-data"
+		} else {
+			dataDirFlag = filepath.Join(home, ".benzcloud", "plugins", "web")
+		}
+	}
+
+	mgr, err := sites.NewManager(dataDirFlag, domainFlag)
+	if err != nil {
+		log.Fatalf("Fatal: failed to initialize sites manager: %v\n", err)
+	}
+
+	subFS, err := fs.Sub(webFS, "web")
+	if err != nil {
+		log.Fatalf("Fatal: failed to extract web assets: %v\n", err)
+	}
+	uiFileServer := http.FileServer(http.FS(subFS))
+
+	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		// Health & IPC endpoint for benzcloud-server
+		if r.URL.Path == "/health" {
+			w.Header().Set("Content-Type", "application/json")
+			_ = json.NewEncoder(w).Encode(map[string]interface{}{
+				"status":     "healthy",
+				"subdomains": mgr.Subdomains(),
+				"version":    Version,
+			})
+			return
+		}
+
+		// API endpoints for managing sites
+		if strings.HasPrefix(r.URL.Path, "/api/sites") {
+			switch r.Method {
+			case http.MethodGet:
+				w.Header().Set("Content-Type", "application/json")
+				_ = json.NewEncoder(w).Encode(map[string]interface{}{
+					"sites":       mgr.ListSites(),
+					"base_domain": domainFlag,
+				})
+				return
+			case http.MethodPost:
+				var req struct {
+					Subdomain string `json:"subdomain"`
+					Title     string `json:"title"`
+					Engine    string `json:"engine"`
+				}
+				if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+					http.Error(w, "Invalid payload", http.StatusBadRequest)
+					return
+				}
+				s, err := mgr.CreateSite(req.Subdomain, req.Engine, req.Title)
+				if err != nil {
+					w.Header().Set("Content-Type", "application/json")
+					w.WriteHeader(http.StatusBadRequest)
+					_ = json.NewEncoder(w).Encode(map[string]string{"error": err.Error()})
+					return
+				}
+				w.Header().Set("Content-Type", "application/json")
+				_ = json.NewEncoder(w).Encode(s)
+				return
+			case http.MethodDelete:
+				sub := r.URL.Query().Get("subdomain")
+				if err := mgr.DeleteSite(sub); err != nil {
+					http.Error(w, err.Error(), http.StatusBadRequest)
+					return
+				}
+				w.Header().Set("Content-Type", "application/json")
+				_ = json.NewEncoder(w).Encode(map[string]bool{"success": true})
+				return
+			}
+		}
+
+		// Host detection: Is this request for a specific hosted site subdomain?
+		host := strings.ToLower(r.Host)
+		if idx := strings.Index(host, ":"); idx != -1 {
+			host = host[:idx]
+		}
+
+		cleanBase := strings.ToLower(strings.Trim(domainFlag, "."))
+		suffix := "." + cleanBase
+
+		if strings.HasSuffix(host, suffix) {
+			sub := strings.TrimSuffix(host, suffix)
+			if sub != "" {
+				mgr.ServeSite(w, r, sub)
+				return
+			}
+		}
+
+		// Default: Serve the Plugin UI
+		uiFileServer.ServeHTTP(w, r)
+	})
+
+	server := &http.Server{
+		Addr:    fmt.Sprintf("0.0.0.0:%d", portFlag),
+		Handler: handler,
+	}
+
+	go func() {
+		log.Printf("🚀 [BenzCloud Web Plugin %s] Listening on port %d (Domain: %s)\n", Version, portFlag, domainFlag)
+		if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			log.Fatalf("Fatal: web plugin server error: %v\n", err)
+		}
+	}()
+
+	quit := make(chan os.Signal, 1)
+	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
+	<-quit
+
+	log.Println("Stopping BenzCloud Web Plugin...")
+	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+	_ = server.Shutdown(ctx)
+	log.Println("Web Plugin stopped safely.")
+}
diff --git a/web/app.js b/web/app.js
new file mode 100644
index 0000000..7a920d2
--- /dev/null
+++ b/web/app.js
@@ -0,0 +1,145 @@
+let currentLang = localStorage.getItem("benzcloud_web_lang") || "de";
+let baseDomain = "intern";
+
+const i18n = {
+  de: {
+    heading_sites: "Gehostete Webseiten",
+    desc_sites: "Erstelle und verwalte Webseiten unter frei wählbaren Subdomains mit HTML, PHP oder Astro.",
+    btn_new_site: "➕ Neue Webseite",
+    modal_title: "Neue Webseite erstellen",
+    lbl_subdomain: "Wunsch-Subdomain:",
+    lbl_title: "Titel der Webseite:",
+    lbl_engine: "Web-Engine / Technologie:",
+    btn_cancel: "Abbrechen",
+    btn_create: "Webseite anlegen",
+    btn_open: "🌐 Öffnen",
+    btn_delete: "🗑️ Löschen",
+    confirm_delete: "Möchtest du diese Webseite wirklich löschen?"
+  },
+  en: {
+    heading_sites: "Hosted Websites",
+    desc_sites: "Create and manage websites under arbitrary subdomains using HTML, PHP, or Astro.",
+    btn_new_site: "➕ New Website",
+    modal_title: "Create New Website",
+    lbl_subdomain: "Custom Subdomain:",
+    lbl_title: "Website Title:",
+    lbl_engine: "Web Engine / Technology:",
+    btn_cancel: "Cancel",
+    btn_create: "Create Website",
+    btn_open: "🌐 Open",
+    btn_delete: "🗑️ Delete",
+    confirm_delete: "Are you sure you want to delete this website?"
+  }
+};
+
+document.addEventListener("DOMContentLoaded", () => {
+  applyLanguage(currentLang);
+  fetchSites();
+});
+
+function setLanguage(lang) {
+  currentLang = lang;
+  localStorage.setItem("benzcloud_web_lang", lang);
+  applyLanguage(lang);
+}
+
+function applyLanguage(lang) {
+  document.querySelectorAll("[data-i18n]").forEach(el => {
+    const key = el.getAttribute("data-i18n");
+    if (i18n[lang] && i18n[lang][key]) {
+      el.textContent = i18n[lang][key];
+    }
+  });
+  document.getElementById("langDE").classList.toggle("active", lang === "de");
+  document.getElementById("langEN").classList.toggle("active", lang === "en");
+}
+
+async function fetchSites() {
+  try {
+    const res = await fetch("/api/sites");
+    const data = await res.json();
+    baseDomain = data.base_domain || "intern";
+    document.getElementById("dispDomainSuffix").textContent = `.${baseDomain}`;
+
+    const grid = document.getElementById("sitesGrid");
+    grid.innerHTML = "";
+
+    data.sites.forEach(s => {
+      const card = document.createElement("div");
+      card.className = "site-card";
+      const siteUrl = `http://${s.subdomain}.${baseDomain}`;
+      const engineClass = s.engine === "php" ? "badge-php" : "badge-engine";
+
+      card.innerHTML = `
+        <div class="s-top">
+          <div>
+            <div class="s-title">${escapeHtml(s.title)}</div>
+            <div class="s-url">${s.subdomain}.${baseDomain}</div>
+          </div>
+          <span class="badge-engine ${engineClass}">${s.engine.toUpperCase()}</span>
+        </div>
+        <p class="desc" style="font-size:0.8rem;">Erstellt am: ${new Date(s.created_at).toLocaleDateString()}</p>
+        <div class="s-actions">
+          <a class="btn-primary btn-sm" href="${siteUrl}" target="_blank">${i18n[currentLang].btn_open}</a>
+          <button class="btn-outline btn-sm" onclick="deleteSite('${escapeHtml(s.subdomain)}')">${i18n[currentLang].btn_delete}</button>
+        </div>
+      `;
+      grid.appendChild(card);
+    });
+  } catch (err) {
+    console.error("Failed to load sites:", err);
+  }
+}
+
+function openCreateModal() {
+  document.getElementById("createSiteModal").style.display = "flex";
+}
+
+function closeCreateModal() {
+  document.getElementById("createSiteModal").style.display = "none";
+}
+
+async function submitNewSite(e) {
+  e.preventDefault();
+  const subdomain = document.getElementById("newSubdomain").value.trim();
+  const title = document.getElementById("newTitle").value.trim();
+  const engine = document.getElementById("newEngine").value;
+
+  try {
+    const res = await fetch("/api/sites", {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ subdomain, title, engine })
+    });
+    if (!res.ok) {
+      const err = await res.json();
+      alert("Fehler: " + (err.error || "Erstellung fehlgeschlagen"));
+      return;
+    }
+    closeCreateModal();
+    fetchSites();
+  } catch (err) {
+    alert("Netzwerkfehler: " + err);
+  }
+}
+
+async function deleteSite(sub) {
+  if (!confirm(i18n[currentLang].confirm_delete)) return;
+  try {
+    await fetch(`/api/sites?subdomain=${encodeURIComponent(sub)}`, { method: "DELETE" });
+    fetchSites();
+  } catch (err) {
+    alert("Löschen fehlgeschlagen");
+  }
+}
+
+function escapeHtml(str) {
+  if (!str) return "";
+  return String(str).replace(/[&<>"']/g, m => ({
+    "&": "&amp;",
+    "<": "&lt;",
+    ">": "&gt;",
+    '"': "&quot;",
+    "'": "&#39;"
+  }[m]));
+}
diff --git a/web/index.html b/web/index.html
new file mode 100644
index 0000000..00369dc
--- /dev/null
+++ b/web/index.html
@@ -0,0 +1,76 @@
+<!DOCTYPE html>
+<html lang="de" data-theme="dark">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>BenzCloud – Web-Hosting Plugin</title>
+  <link rel="stylesheet" href="style.css">
+</head>
+<body>
+  <header class="app-header">
+    <div class="header-left">
+      <div class="logo-icon">🌐</div>
+      <div class="logo-text">
+        <span class="brand-title">BenzCloud Web-Hosting</span>
+        <span class="brand-badge">v1.0</span>
+      </div>
+    </div>
+    <div class="header-right">
+      <div class="lang-switcher">
+        <button id="langDE" class="btn-lang active" onclick="setLanguage('de')">DE</button>
+        <button id="langEN" class="btn-lang" onclick="setLanguage('en')">EN</button>
+      </div>
+    </div>
+  </header>
+
+  <main class="main-content">
+    <div class="dashboard-header">
+      <div>
+        <h1 data-i18n="heading_sites">Gehostete Webseiten</h1>
+        <p class="desc" data-i18n="desc_sites">Erstelle und verwalte Webseiten unter frei wählbaren Subdomains mit HTML, PHP oder Astro.</p>
+      </div>
+      <button class="btn-primary" onclick="openCreateModal()" data-i18n="btn_new_site">➕ Neue Webseite</button>
+    </div>
+
+    <div class="sites-grid" id="sitesGrid"></div>
+  </main>
+
+  <div id="createSiteModal" class="modal-backdrop" style="display:none;">
+    <div class="modal-card">
+      <h3 data-i18n="modal_title">Neue Webseite erstellen</h3>
+      <form onsubmit="submitNewSite(event)">
+        <div class="form-group">
+          <label data-i18n="lbl_subdomain">Wunsch-Subdomain:</label>
+          <div class="sub-input-group">
+            <input type="text" id="newSubdomain" required placeholder="z. B. blog, shop, landing">
+            <span class="domain-suffix" id="dispDomainSuffix">.domain</span>
+          </div>
+        </div>
+        <div class="form-group">
+          <label data-i18n="lbl_title">Titel der Webseite:</label>
+          <input type="text" id="newTitle" required placeholder="Mein Firmenblog">
+        </div>
+        <div class="form-group">
+          <label data-i18n="lbl_engine">Web-Engine / Technologie:</label>
+          <select id="newEngine" class="select-box">
+            <option value="html">HTML5 &amp; CSS3 (Standard / Vorinstalliert)</option>
+            <option value="php">PHP (Dynamisches Scripting)</option>
+            <option value="astro">Astro (Modern Static Web)</option>
+          </select>
+        </div>
+        <div class="modal-actions">
+          <button type="button" class="btn-secondary" onclick="closeCreateModal()" data-i18n="btn_cancel">Abbrechen</button>
+          <button type="submit" class="btn-primary" data-i18n="btn_create">Webseite anlegen</button>
+        </div>
+      </form>
+    </div>
+  </div>
+
+  <footer class="app-footer">
+    <span>BenzCloud Web-Plugin © 2026 Jeremy Benz • GNU GPLv3 Lizenz</span>
+    <span class="pill-pre">Pre-Release / In aktiver Entwicklung</span>
+  </footer>
+
+  <script src="app.js"></script>
+</body>
+</html>
diff --git a/web/style.css b/web/style.css
new file mode 100644
index 0000000..0bd5b2c
--- /dev/null
+++ b/web/style.css
@@ -0,0 +1,242 @@
+:root {
+  --bg-page: #0a0e17;
+  --bg-surface: #121826;
+  --bg-card: #182032;
+  --bg-hover: #1e293f;
+  --border-subtle: #243048;
+  --border-focus: #38bdf8;
+  --text-main: #f1f5f9;
+  --text-muted: #94a3b8;
+  --text-subtle: #64748b;
+  --accent-blue: #38bdf8;
+  --accent-green: #34d399;
+  --accent-purple: #c084fc;
+  --radius-sm: 6px;
+  --radius-md: 12px;
+  --radius-lg: 16px;
+  --font-mono: "JetBrains Mono", monospace;
+}
+
+* { box-sizing: border-box; margin: 0; padding: 0; }
+body {
+  background-color: var(--bg-page);
+  color: var(--text-main);
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+}
+
+.app-header {
+  background-color: var(--bg-surface);
+  border-bottom: 1px solid var(--border-subtle);
+  padding: 1rem 2rem;
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+}
+
+.header-left { display: flex; align-items: center; gap: 0.75rem; }
+.logo-icon { font-size: 1.5rem; }
+.brand-title { font-weight: 700; font-size: 1.2rem; }
+.brand-badge {
+  background-color: rgba(56, 189, 248, 0.15);
+  color: var(--accent-blue);
+  border: 1px solid rgba(56, 189, 248, 0.3);
+  font-size: 0.75rem;
+  padding: 0.15rem 0.45rem;
+  border-radius: var(--radius-sm);
+  font-weight: 600;
+}
+
+.lang-switcher {
+  display: flex;
+  background-color: var(--bg-card);
+  border-radius: var(--radius-sm);
+  overflow: hidden;
+  border: 1px solid var(--border-subtle);
+}
+
+.btn-lang {
+  background: transparent;
+  border: none;
+  color: var(--text-muted);
+  padding: 0.3rem 0.6rem;
+  font-size: 0.8rem;
+  font-weight: 600;
+  cursor: pointer;
+}
+.btn-lang.active { background-color: var(--accent-blue); color: #000; }
+
+.main-content {
+  flex: 1;
+  max-width: 1000px;
+  width: 100%;
+  margin: 0 auto;
+  padding: 2rem 1.5rem;
+}
+
+.dashboard-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 2rem;
+}
+
+.desc { color: var(--text-muted); font-size: 0.95rem; margin-top: 0.25rem; }
+
+.btn-primary {
+  background-color: var(--accent-blue);
+  color: #04101d;
+  font-weight: 700;
+  border: none;
+  border-radius: var(--radius-sm);
+  padding: 0.75rem 1.25rem;
+  cursor: pointer;
+  text-decoration: none;
+}
+.btn-secondary {
+  background-color: var(--bg-card);
+  color: var(--text-main);
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-sm);
+  padding: 0.75rem 1.25rem;
+  cursor: pointer;
+}
+.btn-sm { padding: 0.35rem 0.7rem; font-size: 0.8rem; }
+.btn-outline {
+  background: transparent;
+  border: 1px solid var(--border-subtle);
+  color: var(--text-muted);
+  cursor: pointer;
+  border-radius: var(--radius-sm);
+}
+
+.sites-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
+  gap: 1.25rem;
+}
+
+.site-card {
+  background-color: var(--bg-surface);
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-md);
+  padding: 1.5rem;
+  display: flex;
+  flex-direction: column;
+  gap: 0.75rem;
+}
+
+.s-top {
+  display: flex;
+  justify-content: space-between;
+  align-items: flex-start;
+}
+
+.s-title { font-weight: 700; font-size: 1.1rem; }
+.s-url {
+  font-family: var(--font-mono);
+  color: var(--accent-blue);
+  font-size: 0.85rem;
+}
+
+.badge-engine {
+  font-size: 0.75rem;
+  font-weight: 600;
+  padding: 0.2rem 0.5rem;
+  border-radius: 9999px;
+  background-color: rgba(52, 211, 153, 0.15);
+  color: var(--accent-green);
+  border: 1px solid rgba(52, 211, 153, 0.3);
+}
+.badge-php {
+  background-color: rgba(192, 132, 252, 0.15);
+  color: var(--accent-purple);
+  border: 1px solid rgba(192, 132, 252, 0.3);
+}
+
+.s-actions {
+  display: flex;
+  gap: 0.5rem;
+  margin-top: auto;
+  padding-top: 0.75rem;
+  border-top: 1px solid var(--border-subtle);
+}
+
+/* Modal */
+.modal-backdrop {
+  position: fixed;
+  top: 0; left: 0; right: 0; bottom: 0;
+  background-color: rgba(0,0,0,0.7);
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  backdrop-filter: blur(4px);
+  z-index: 200;
+}
+
+.modal-card {
+  background-color: var(--bg-surface);
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-lg);
+  padding: 2rem;
+  max-width: 480px;
+  width: 90%;
+}
+
+.form-group { margin-bottom: 1.25rem; }
+label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.35rem; }
+input[type="text"], .select-box {
+  width: 100%;
+  background-color: var(--bg-card);
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-sm);
+  color: var(--text-main);
+  padding: 0.75rem 1rem;
+  font-size: 0.95rem;
+}
+
+.sub-input-group {
+  display: flex;
+  align-items: center;
+}
+.domain-suffix {
+  background-color: var(--bg-card);
+  border: 1px solid var(--border-subtle);
+  border-left: none;
+  padding: 0.75rem 0.85rem;
+  font-family: var(--font-mono);
+  font-size: 0.85rem;
+  color: var(--text-subtle);
+  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
+}
+.sub-input-group input {
+  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
+}
+
+.modal-actions {
+  display: flex;
+  justify-content: flex-end;
+  gap: 0.75rem;
+}
+
+.app-footer {
+  border-top: 1px solid var(--border-subtle);
+  padding: 1rem 2rem;
+  font-size: 0.8rem;
+  color: var(--text-subtle);
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-top: auto;
+}
+
+.pill-pre {
+  background-color: rgba(251, 191, 36, 0.12);
+  color: #fbbf24;
+  border: 1px solid rgba(251, 191, 36, 0.3);
+  padding: 0.15rem 0.5rem;
+  border-radius: 9999px;
+  font-size: 0.75rem;
+}