update package

- Add parent_id to NodeUpdate schema in backend so PATCH /nodes/{id}
  accepts it (was silently ignored before)
- Expose parent_id in update_node MCP tool schema so the MCP SDK
  forwards it to the backend instead of stripping it
- Add regression tests in both backend and MCP layers

.env.example

@@ -15,3 +15,10 @@ SCANNER_RANGES=["192.168.1.0/24"]
 
 # Status checker interval in seconds
 STATUS_CHECKER_INTERVAL=60
+
+# MCP server — used by the mcp service (port 8001)
+# MCP_API_KEY: authenticates AI clients (Claude Code, etc.) → MCP server
+# MCP_SERVICE_KEY: authenticates MCP server → backend (never exposed externally)
+# Generate keys: python3 -c "import secrets; print(secrets.token_hex(32))"
+MCP_API_KEY=mcp_sk_changeme
+MCP_SERVICE_KEY=svc_changeme

.gitignore

@@ -48,3 +48,4 @@ htmlcov/
 
 # Docker
 .docker/
+Ideas.md

README.md

@@ -4,9 +4,21 @@ Homelable is a self-hosted infrastructure visualization solution. It provides a
 
 Homelable also offers a healthcheck system (WIP) through multiple methods (ping/TCP, /health API, etc.) to get a global overview of online/offline services.
 
+You can also select some pre-built design styles, or personalize each device in your diagram.
+
 If you just like the design, you can only run the frontend and export your design as PNG.
 
 
+---
+
+## Screenshots
+
+<p align="center">
+  <img src="docs/homelable1.png" alt="Homelable canvas overview" width="100%" />
+  <img src="docs/homelable2.png" alt="Homelable node detail" width="100%" />
+  <img src="docs/homelable3.png" alt="Homelable sidebar and scan" width="100%" />
+</p>
+
 ---
 
 ## Quick Start — Docker
@@ -150,6 +162,94 @@ Proxmox nodes render as a resizable group container. VM and LXC nodes can be pla
 
 ---
 
+## MCP Server (AI Integration)
+
+Homelable exposes a [Model Context Protocol](https://modelcontextprotocol.io) server so any MCP-compatible AI client (Claude Code, Claude Desktop, Open WebUI…) can read your homelab topology and act on it.
+
+### What the AI can do
+
+| | Action |
+|---|---|
+| **Read** | List all nodes, edges, full canvas, pending devices, scan history |
+| **Write** | Add / update / delete nodes and edges, trigger a network scan, approve or hide discovered devices |
+
+### Setup
+
+**1. Add the keys to your `.env`:**
+
+```env
+# Authenticates AI clients (Claude Code, etc.) → MCP server
+MCP_API_KEY=mcp_sk_changeme
+
+# Authenticates MCP server → backend (internal Docker network only, never exposed)
+MCP_SERVICE_KEY=svc_changeme
+
+# Generate both with:
+# python3 -c "import secrets; print(secrets.token_hex(32))"
+```
+
+No plain-text passwords involved — `AUTH_PASSWORD_HASH` is only used for the web UI login.
+
+**2. Start the MCP service:**
+
+```bash
+docker compose up -d mcp
+# MCP server is now listening on http://<your-homelab-ip>:8001
+```
+
+**3. Configure your AI client:**
+
+**Claude Code** — run this command in your terminal:
+```bash
+claude mcp add --transport sse homelable http://<your-homelab-ip>:8001/mcp \
+  --header "X-API-Key: mcp_sk_yourkey"
+```
+
+Or add it manually to `~/.claude.json`:
+```json
+{
+  "mcpServers": {
+    "homelable": {
+      "type": "sse",
+      "url": "http://<your-homelab-ip>:8001/mcp",
+      "headers": {
+        "X-API-Key": "mcp_sk_yourkey"
+      }
+    }
+  }
+}
+```
+
+**Claude Desktop** — edit `~/Library/Application Support/Claude/claude_desktop_config.json` (macOS) or `%APPDATA%\Claude\claude_desktop_config.json` (Windows):
+```json
+{
+  "mcpServers": {
+    "homelable": {
+      "type": "sse",
+      "url": "http://<your-homelab-ip>:8001/mcp",
+      "headers": {
+        "X-API-Key": "mcp_sk_yourkey"
+      }
+    }
+  }
+}
+```
+
+### Example prompts
+
+- *"What nodes are currently offline?"*
+- *"Add a new LXC container named `pihole` at 192.168.1.5, connected to my switch."*
+- *"Trigger a network scan on 192.168.1.0/24 and show me the pending devices."*
+- *"Show me the full canvas topology."*
+
+### Security
+
+- The MCP server is **not** intended to be exposed to the internet — keep port 8001 firewalled to your LAN.
+- Rotate the key any time by updating `MCP_API_KEY` in `.env` and restarting: `docker compose restart mcp`.
+- The MCP server communicates with the backend over the internal Docker network — the backend API is never directly exposed to MCP clients.
+
+---
+
 ## Development Mode
 
 **Backend (Python 3.13):**

backend/app/api/deps.py

@@ -1,12 +1,30 @@
-from fastapi import Depends, HTTPException, status
+import hmac
+
+from fastapi import Depends, Header, HTTPException, Request, status
 from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
 
+from app.core.config import settings
 from app.core.security import decode_token
 
-bearer = HTTPBearer()
+bearer = HTTPBearer(auto_error=False)
 
 
-def get_current_user(credentials: HTTPAuthorizationCredentials = Depends(bearer)) -> str:
+def get_current_user(
+    request: Request,
+    credentials: HTTPAuthorizationCredentials | None = Depends(bearer),
+    x_mcp_service_key: str | None = Header(default=None),
+) -> str:
+    # 1. MCP service key (Docker-internal only — backend port is not externally exposed)
+    if x_mcp_service_key is not None:
+        if not settings.mcp_service_key:
+            raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="MCP service key not configured")
+        if not hmac.compare_digest(x_mcp_service_key.encode(), settings.mcp_service_key.encode()):
+            raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Invalid MCP service key")
+        return "__mcp_service__"
+
+    # 2. Standard JWT bearer token
+    if credentials is None:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Not authenticated")
     username = decode_token(credentials.credentials)
     if not username:
         raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Invalid token")

backend/app/core/config.py

@@ -25,6 +25,11 @@ class Settings(BaseSettings):
     # Status checker
     status_checker_interval: int = 60
 
+    # MCP service key — set MCP_SERVICE_KEY in .env
+    # Used by the MCP server to authenticate against the backend without a user password.
+    # Leave empty to disable MCP service key auth.
+    mcp_service_key: str = ""
+
     def _override_path(self) -> Path:
         return Path(self.sqlite_path).parent / "scan_config.json"
 

backend/app/db/database.py

@@ -40,6 +40,8 @@ async def init_db() -> None:
             await conn.exec_driver_sql("ALTER TABLE edges ADD COLUMN source_handle TEXT")
         with suppress(Exception):
             await conn.exec_driver_sql("ALTER TABLE edges ADD COLUMN target_handle TEXT")
+        with suppress(Exception):
+            await conn.exec_driver_sql("ALTER TABLE edges ADD COLUMN animated BOOLEAN NOT NULL DEFAULT 0")
 
 
 async def get_db() -> AsyncGenerator[AsyncSession, None]:

backend/app/db/models.py

@@ -58,6 +58,7 @@ class Edge(Base):
     speed: Mapped[str | None] = mapped_column(String)
     custom_color: Mapped[str | None] = mapped_column(String)
     path_style: Mapped[str | None] = mapped_column(String)
+    animated: Mapped[bool] = mapped_column(Boolean, default=False)
     source_handle: Mapped[str | None] = mapped_column(String)
     target_handle: Mapped[str | None] = mapped_column(String)
     created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=_now)

backend/app/schemas/canvas.py

@@ -37,6 +37,7 @@ class EdgeSave(BaseModel):
     speed: str | None = None
     custom_color: str | None = None
     path_style: str | None = None
+    animated: bool = False
     source_handle: str | None = None
     target_handle: str | None = None
 

backend/app/schemas/edges.py

@@ -12,6 +12,7 @@ class EdgeBase(BaseModel):
     speed: str | None = None
     custom_color: str | None = None
     path_style: str | None = None
+    animated: bool = False
     source_handle: str | None = None
     target_handle: str | None = None
 
@@ -27,6 +28,7 @@ class EdgeUpdate(BaseModel):
     speed: str | None = None
     custom_color: str | None = None
     path_style: str | None = None
+    animated: bool | None = None
     source_handle: str | None = None
     target_handle: str | None = None
 

backend/app/schemas/nodes.py

@@ -42,6 +42,7 @@ class NodeUpdate(BaseModel):
     notes: str | None = None
     pos_x: float | None = None
     pos_y: float | None = None
+    parent_id: str | None = None
     container_mode: bool | None = None
     custom_colors: dict[str, Any] | None = None
     custom_icon: str | None = None

backend/tests/test_auth.py

@@ -1,3 +1,4 @@
+import pytest
 from httpx import AsyncClient
 
 
@@ -28,3 +29,30 @@ async def test_health_is_public(client: AsyncClient):
     res = await client.get("/api/v1/health")
     assert res.status_code == 200
     assert res.json() == {"status": "ok"}
+
+
+# --- MCP service key auth ---
+
+@pytest.fixture
+def with_service_key():
+    from app.core.config import settings
+    settings.mcp_service_key = "test-service-key"
+    yield "test-service-key"
+    settings.mcp_service_key = ""
+
+
+async def test_service_key_grants_access(client: AsyncClient, with_service_key):
+    res = await client.get("/api/v1/nodes", headers={"X-MCP-Service-Key": with_service_key})
+    assert res.status_code == 200
+
+
+async def test_service_key_wrong_value(client: AsyncClient, with_service_key):
+    res = await client.get("/api/v1/nodes", headers={"X-MCP-Service-Key": "wrong-key"})
+    assert res.status_code == 401
+
+
+async def test_service_key_disabled_when_not_configured(client: AsyncClient):
+    from app.core.config import settings
+    settings.mcp_service_key = ""
+    res = await client.get("/api/v1/nodes", headers={"X-MCP-Service-Key": "any-key"})
+    assert res.status_code == 401

backend/tests/test_nodes.py

@@ -102,6 +102,16 @@ async def test_update_node_container_mode(client: AsyncClient, headers: dict):
     assert res.json()["container_mode"] is True
 
 
+async def test_update_node_parent_id(client: AsyncClient, headers: dict):
+    parent = await client.post("/api/v1/nodes", json={"type": "proxmox", "label": "PVE", "status": "unknown"}, headers=headers)
+    parent_id = parent.json()["id"]
+    child = await client.post("/api/v1/nodes", json={"type": "lxc", "label": "Child", "status": "unknown"}, headers=headers)
+    child_id = child.json()["id"]
+    res = await client.patch(f"/api/v1/nodes/{child_id}", json={"parent_id": parent_id}, headers=headers)
+    assert res.status_code == 200
+    assert res.json()["parent_id"] == parent_id
+
+
 async def test_create_node_requires_auth(client: AsyncClient):
     res = await client.post("/api/v1/nodes", json={"type": "server", "label": "N", "status": "unknown"})
     assert res.status_code == 401

docker-compose.yml

@@ -18,6 +18,22 @@ services:
     cap_add:
       - NET_RAW
 
+  mcp:
+    build:
+      context: ./mcp
+      dockerfile: Dockerfile.mcp
+    restart: unless-stopped
+    ports:
+      - "8001:8001"
+    env_file:
+      - .env
+    environment:
+      BACKEND_URL: "http://backend:8000"
+    depends_on:
+      - backend
+    networks:
+      - homelable
+
   frontend:
     build:
       context: .

frontend/index.html

@@ -2,9 +2,10 @@
 <html lang="en">
   <head>
     <meta charset="UTF-8" />
-    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>frontend</title>
+    <meta name="description" content="Homelable — Visual homelab infrastructure map with live monitoring" />
+    <title>Homelable</title>
   </head>
   <body>
     <div id="root"></div>

frontend/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "frontend",
-  "version": "0.0.0",
+  "version": "1.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "frontend",
-      "version": "0.0.0",
+      "version": "1.0.0",
       "dependencies": {
         "@base-ui/react": "^1.2.0",
         "@dagrejs/dagre": "^2.0.4",
@@ -5474,9 +5474,9 @@
       }
     },
     "node_modules/flatted": {
-      "version": "3.3.4",
-      "resolved": "https://registry.npmjs.org/flatted/-/flatted-3.3.4.tgz",
-      "integrity": "sha512-3+mMldrTAPdta5kjX2G2J7iX4zxtnwpdA8Tr2ZSjkyPSanvbZAcy6flmtnXbEybHrDcU9641lxrMfFuUxVz9vA==",
+      "version": "3.4.1",
+      "resolved": "https://registry.npmjs.org/flatted/-/flatted-3.4.1.tgz",
+      "integrity": "sha512-IxfVbRFVlV8V/yRaGzk0UVIcsKKHMSfYw66T/u4nTwlWteQePsxe//LjudR1AMX4tZW3WFCh3Zqa/sjlqpbURQ==",
       "dev": true,
       "license": "ISC"
     },
@@ -5826,9 +5826,9 @@
       }
     },
     "node_modules/hono": {
-      "version": "4.12.5",
-      "resolved": "https://registry.npmjs.org/hono/-/hono-4.12.5.tgz",
-      "integrity": "sha512-3qq+FUBtlTHhtYxbxheZgY8NIFnkkC/MR8u5TTsr7YZ3wixryQ3cCwn3iZbg8p8B88iDBBAYSfZDS75t8MN7Vg==",
+      "version": "4.12.8",
+      "resolved": "https://registry.npmjs.org/hono/-/hono-4.12.8.tgz",
+      "integrity": "sha512-VJCEvtrezO1IAR+kqEYnxUOoStaQPGrCmX3j4wDTNOcD1uRPFpGlwQUIW8niPuvHXaTUxeOUl5MMDGrl+tmO9A==",
       "license": "MIT",
       "engines": {
         "node": ">=16.9.0"
@@ -8770,9 +8770,9 @@
       }
     },
     "node_modules/undici": {
-      "version": "7.22.0",
-      "resolved": "https://registry.npmjs.org/undici/-/undici-7.22.0.tgz",
-      "integrity": "sha512-RqslV2Us5BrllB+JeiZnK4peryVTndy9Dnqq62S3yYRRTj0tFQCwEniUy2167skdGOy3vqRzEvl1Dm4sV2ReDg==",
+      "version": "7.24.3",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-7.24.3.tgz",
+      "integrity": "sha512-eJdUmK/Wrx2d+mnWWmwwLRyA7OQCkLap60sk3dOK4ViZR7DKwwptwuIvFBg2HaiP9ESaEdhtpSymQPvytpmkCA==",
       "dev": true,
       "license": "MIT",
       "engines": {

frontend/public/favicon.svg

@@ -0,0 +1,31 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" fill="none">
+  <!-- Background circle -->
+  <circle cx="32" cy="32" r="32" fill="#0d1117"/>
+
+  <!-- House silhouette -->
+  <path d="M32 12 L52 30 L48 30 L48 52 L16 52 L16 30 L12 30 Z"
+        fill="#161b22" stroke="#00d4ff" stroke-width="1.5" stroke-linejoin="round"/>
+
+  <!-- Door -->
+  <rect x="27" y="40" width="10" height="12" rx="1"
+        fill="#0d1117" stroke="#00d4ff" stroke-width="1"/>
+
+  <!-- Network nodes -->
+  <!-- Center node (hub) -->
+  <circle cx="32" cy="33" r="3" fill="#00d4ff"/>
+
+  <!-- Left node -->
+  <circle cx="22" cy="38" r="2" fill="#39d353"/>
+  <line x1="22" y1="38" x2="29" y2="33" stroke="#39d353" stroke-width="1" opacity="0.7"/>
+
+  <!-- Right node -->
+  <circle cx="42" cy="38" r="2" fill="#39d353"/>
+  <line x1="42" y1="38" x2="35" y2="33" stroke="#39d353" stroke-width="1" opacity="0.7"/>
+
+  <!-- Top node (inside roof area) -->
+  <circle cx="32" cy="24" r="2" fill="#a855f7"/>
+  <line x1="32" y1="24" x2="32" y2="30" stroke="#a855f7" stroke-width="1" opacity="0.7"/>
+
+  <!-- Glow effect on center node -->
+  <circle cx="32" cy="33" r="3" fill="none" stroke="#00d4ff" stroke-width="1.5" opacity="0.4"/>
+</svg>

frontend/src/App.tsx

@@ -2,6 +2,7 @@ import { useEffect, useCallback, useRef, useState } from 'react'
 import { ReactFlowProvider, type Connection, type Edge } from '@xyflow/react'
 import { type Node } from '@xyflow/react'
 import { applyDagreLayout } from '@/utils/layout'
+import { generateMarkdownTable } from '@/utils/exportMarkdown'
 import { exportToPng } from '@/utils/export'
 import { TooltipProvider } from '@/components/ui/tooltip'
 import { Toaster } from '@/components/ui/sonner'
@@ -15,8 +16,12 @@ import { NodeModal } from '@/components/modals/NodeModal'
 import { EdgeModal } from '@/components/modals/EdgeModal'
 import { ScanConfigModal } from '@/components/modals/ScanConfigModal'
 import { GroupRectModal, type GroupRectFormData } from '@/components/modals/GroupRectModal'
+import { ThemeModal } from '@/components/modals/ThemeModal'
+import { SearchModal } from '@/components/modals/SearchModal'
+import { ShortcutsModal } from '@/components/modals/ShortcutsModal'
 import { useCanvasStore } from '@/stores/canvasStore'
 import { useAuthStore } from '@/stores/authStore'
+import { useThemeStore } from '@/stores/themeStore'
 import { canvasApi } from '@/api/client'
 import { demoNodes, demoEdges } from '@/utils/demoData'
 import { useStatusPolling } from '@/hooks/useStatusPolling'
@@ -26,12 +31,16 @@ const STANDALONE = import.meta.env.VITE_STANDALONE === 'true'
 const STANDALONE_STORAGE_KEY = 'homelable_canvas'
 
 export default function App() {
-  const { loadCanvas, markSaved, selectedNodeId, addNode, updateNode, deleteNode, onConnect, updateEdge, deleteEdge, setProxmoxContainerMode, setNodeZIndex, editingGroupRectId, setEditingGroupRectId, nodes, edges } = useCanvasStore()
+  const { loadCanvas, markSaved, selectedNodeId, addNode, updateNode, deleteNode, onConnect, updateEdge, deleteEdge, setProxmoxContainerMode, setNodeZIndex, editingGroupRectId, setEditingGroupRectId, nodes, edges, snapshotHistory, undo, redo, copySelectedNodes, pasteNodes } = useCanvasStore()
   const canvasRef = useRef<HTMLDivElement>(null)
   const { isAuthenticated } = useAuthStore()
+  const { activeTheme, setTheme } = useThemeStore()
 
   useStatusPolling()
 
+  const [themeModalOpen, setThemeModalOpen] = useState(false)
+  const [searchOpen, setSearchOpen] = useState(false)
+  const [shortcutsOpen, setShortcutsOpen] = useState(false)
   const [addNodeOpen, setAddNodeOpen] = useState(false)
   const [addGroupRectOpen, setAddGroupRectOpen] = useState(false)
   const [editNodeId, setEditNodeId] = useState<string | null>(null)
@@ -43,7 +52,7 @@ export default function App() {
   const handleSave = useCallback(async () => {
     try {
       if (STANDALONE) {
-        localStorage.setItem(STANDALONE_STORAGE_KEY, JSON.stringify({ nodes, edges }))
+        localStorage.setItem(STANDALONE_STORAGE_KEY, JSON.stringify({ nodes, edges, theme_id: activeTheme }))
         markSaved()
         toast.success('Canvas saved')
         return
@@ -107,18 +116,19 @@ export default function App() {
         speed: e.data?.speed ?? null,
         custom_color: e.data?.custom_color ?? null,
         path_style: e.data?.path_style ?? null,
+        animated: e.data?.animated ?? false,
         // Normalize stub handle IDs: "top-t" / "bottom-t" are invisible target stubs;
         // map them back to their canonical source handle ID so reload works correctly.
         source_handle: e.sourceHandle === 'top-t' ? 'top' : e.sourceHandle === 'bottom-t' ? 'bottom' : (e.sourceHandle ?? null),
         target_handle: e.targetHandle === 'top-t' ? 'top' : e.targetHandle === 'bottom-t' ? 'bottom' : (e.targetHandle ?? null),
       }))
-      await canvasApi.save({ nodes: nodesToSave, edges: edgesToSave, viewport: {} })
+      await canvasApi.save({ nodes: nodesToSave, edges: edgesToSave, viewport: { theme_id: activeTheme } })
       markSaved()
       toast.success('Canvas saved')
     } catch {
       toast.error('Save failed')
     }
-  }, [nodes, edges, markSaved])
+  }, [nodes, edges, markSaved, activeTheme])
 
   // Keep a ref so the keydown handler always calls the latest version
   const handleSaveRef = useRef(handleSave)
@@ -130,7 +140,8 @@ export default function App() {
       try {
         const saved = localStorage.getItem(STANDALONE_STORAGE_KEY)
         if (saved) {
-          const { nodes: savedNodes, edges: savedEdges } = JSON.parse(saved)
+          const { nodes: savedNodes, edges: savedEdges, theme_id } = JSON.parse(saved)
+          if (theme_id) setTheme(theme_id)
           loadCanvas(savedNodes, savedEdges)
         } else {
           loadCanvas(demoNodes, demoEdges)
@@ -185,27 +196,48 @@ export default function App() {
             targetHandle: e.target_handle ?? null,
             data: e,
           }))
+          const savedTheme = res.data.viewport?.theme_id
+          if (savedTheme) setTheme(savedTheme)
           loadCanvas(rfNodes, rfEdges)
         } else {
           loadCanvas(demoNodes, demoEdges)
         }
       })
       .catch(() => loadCanvas(demoNodes, demoEdges))
-  }, [isAuthenticated, loadCanvas])
+  }, [isAuthenticated, loadCanvas, setTheme])
 
-  // Ctrl+S
+  // Keep refs for store actions so keydown handler is always up-to-date without re-registering
+  const undoRef = useRef(undo)
+  const redoRef = useRef(redo)
+  const copyRef = useRef(copySelectedNodes)
+  const pasteRef = useRef(pasteNodes)
+  useEffect(() => { undoRef.current = undo }, [undo])
+  useEffect(() => { redoRef.current = redo }, [redo])
+  useEffect(() => { copyRef.current = copySelectedNodes }, [copySelectedNodes])
+  useEffect(() => { pasteRef.current = pasteNodes }, [pasteNodes])
+
+  // Global keyboard shortcuts
   useEffect(() => {
     const handler = (e: KeyboardEvent) => {
-      if ((e.ctrlKey || e.metaKey) && e.key === 's') {
-        e.preventDefault()
-        handleSaveRef.current()
-      }
+      const ctrl = e.ctrlKey || e.metaKey
+      // Ignore shortcuts when typing in an input/textarea
+      const tag = (e.target as HTMLElement).tagName
+      const isInput = tag === 'INPUT' || tag === 'TEXTAREA' || (e.target as HTMLElement).isContentEditable
+
+      if (ctrl && e.key === 's') { e.preventDefault(); handleSaveRef.current(); return }
+      if (ctrl && e.key === 'z') { e.preventDefault(); undoRef.current(); return }
+      if (ctrl && (e.key === 'y' || (e.shiftKey && e.key === 'z'))) { e.preventDefault(); redoRef.current(); return }
+      if (ctrl && e.key === 'k') { e.preventDefault(); setSearchOpen(true); return }
+      if (ctrl && e.key === 'c' && !isInput) { copyRef.current(); return }
+      if (ctrl && e.key === 'v' && !isInput) { pasteRef.current(); return }
+      if (e.key === '?' && !isInput) { setShortcutsOpen(true); return }
     }
     window.addEventListener('keydown', handler)
     return () => window.removeEventListener('keydown', handler)
   }, [])
 
   const handleAddNode = useCallback((data: Partial<NodeData>) => {
+    snapshotHistory()
     const id = crypto.randomUUID()
     const isProxmox = data.type === 'proxmox'
     const parentNode = data.parent_id ? nodes.find((n) => n.id === data.parent_id) : null
@@ -224,9 +256,10 @@ export default function App() {
     }
     addNode(newNode)
     toast.success(`Added "${data.label}"`)
-  }, [addNode, nodes])
+  }, [addNode, nodes, snapshotHistory])
 
   const handleAddGroupRect = useCallback((data: GroupRectFormData) => {
+    snapshotHistory()
     const id = crypto.randomUUID()
     const newNode: Node<NodeData> = {
       id,
@@ -251,7 +284,7 @@ export default function App() {
       zIndex: data.z_order - 10,
     }
     addNode(newNode)
-  }, [addNode])
+  }, [addNode, snapshotHistory])
 
   const handleUpdateGroupRect = useCallback((data: GroupRectFormData) => {
     if (!editingGroupRectId) return
@@ -274,9 +307,10 @@ export default function App() {
 
   const handleDeleteGroupRect = useCallback(() => {
     if (!editingGroupRectId) return
+    snapshotHistory()
     deleteNode(editingGroupRectId)
     setEditingGroupRectId(null)
-  }, [editingGroupRectId, deleteNode, setEditingGroupRectId])
+  }, [editingGroupRectId, deleteNode, setEditingGroupRectId, snapshotHistory])
 
   const handleEditNode = useCallback((id: string) => {
     setEditNodeId(id)
@@ -284,6 +318,7 @@ export default function App() {
 
   const handleUpdateNode = useCallback((data: Partial<NodeData>) => {
     if (!editNodeId) return
+    snapshotHistory()
     const existingNode = nodes.find((n) => n.id === editNodeId)
     updateNode(editNodeId, data)
     // If proxmox container_mode changed, apply structural changes (children parentId, node dimensions)
@@ -313,7 +348,7 @@ export default function App() {
       }
     }
     setEditNodeId(null)
-  }, [editNodeId, updateNode, setProxmoxContainerMode, nodes, edges, deleteEdge, onConnect])
+  }, [editNodeId, updateNode, setProxmoxContainerMode, nodes, edges, deleteEdge, onConnect, snapshotHistory])
 
   const handleAutoLayout = useCallback(() => {
     const laid = applyDagreLayout(nodes, edges)
@@ -321,6 +356,13 @@ export default function App() {
     toast.success('Canvas auto-arranged')
   }, [nodes, edges, loadCanvas])
 
+  const handleExportMd = useCallback(async () => {
+    const md = generateMarkdownTable(nodes)
+    if (!md) { toast.error('No nodes to export'); return }
+    await navigator.clipboard.writeText(md)
+    toast.success('Markdown table copied to clipboard')
+  }, [nodes])
+
   const handleExport = useCallback(async () => {
     const el = canvasRef.current?.querySelector<HTMLElement>('.react-flow')
     if (!el) { toast.error('Canvas not ready'); return }
@@ -338,6 +380,7 @@ export default function App() {
 
   const handleEdgeConfirm = useCallback((edgeData: EdgeData) => {
     if (!pendingConnection) return
+    snapshotHistory()
     onConnect({ ...pendingConnection, ...edgeData } as unknown as Connection)
     // When a virtual edge is drawn between LXC/VM (top) and Proxmox (bottom), sync parent_id
     if (edgeData.type === 'virtual') {
@@ -352,7 +395,7 @@ export default function App() {
       }
     }
     setPendingConnection(null)
-  }, [pendingConnection, onConnect, nodes, updateNode])
+  }, [pendingConnection, onConnect, nodes, updateNode, snapshotHistory])
 
   const handleEdgeDoubleClick = useCallback((edge: Edge<EdgeData>) => {
     setEditEdgeId(edge.id)
@@ -360,15 +403,17 @@ export default function App() {
 
   const handleEdgeUpdate = useCallback((data: EdgeData) => {
     if (!editEdgeId) return
+    snapshotHistory()
     updateEdge(editEdgeId, data)
     setEditEdgeId(null)
-  }, [editEdgeId, updateEdge])
+  }, [editEdgeId, updateEdge, snapshotHistory])
 
   const handleEdgeDelete = useCallback(() => {
     if (!editEdgeId) return
+    snapshotHistory()
     deleteEdge(editEdgeId)
     setEditEdgeId(null)
-  }, [editEdgeId, deleteEdge])
+  }, [editEdgeId, deleteEdge, snapshotHistory])
 
   const editNode = editNodeId ? nodes.find((n) => n.id === editNodeId) : null
   const editEdge = editEdgeId ? edges.find((e) => e.id === editEdgeId) : null
@@ -391,10 +436,15 @@ export default function App() {
               onSave={handleSave}
               onAutoLayout={handleAutoLayout}
               onExport={handleExport}
+              onChangeStyle={() => setThemeModalOpen(true)}
+              onUndo={undo}
+              onRedo={redo}
+              onShortcuts={() => setShortcutsOpen(true)}
+              onExportMd={handleExportMd}
             />
             <div className="flex flex-1 min-h-0">
               <div ref={canvasRef} className="flex-1 min-w-0 h-full">
-                <CanvasContainer onConnect={handleEdgeConnect} onEdgeDoubleClick={handleEdgeDoubleClick} />
+                <CanvasContainer onConnect={handleEdgeConnect} onEdgeDoubleClick={handleEdgeDoubleClick} onNodeDragStart={snapshotHistory} />
               </div>
               {selectedNodeId && <DetailPanel onEdit={handleEditNode} />}
             </div>
@@ -481,6 +531,16 @@ export default function App() {
           title="Edit Rectangle"
         />
 
+        {/* key forces re-mount on open so useState captures current theme as original */}
+        <ThemeModal
+          key={themeModalOpen ? 'theme-open' : 'theme-closed'}
+          open={themeModalOpen}
+          onClose={() => setThemeModalOpen(false)}
+        />
+
+        <SearchModal open={searchOpen} onClose={() => setSearchOpen(false)} />
+        <ShortcutsModal open={shortcutsOpen} onClose={() => setShortcutsOpen(false)} />
+
         <Toaster theme="dark" position="bottom-right" />
       </ReactFlowProvider>
     </TooltipProvider>

frontend/src/components/canvas/CanvasContainer.tsx

@@ -11,6 +11,8 @@ import {
 } from '@xyflow/react'
 import '@xyflow/react/dist/style.css'
 import { useCanvasStore } from '@/stores/canvasStore'
+import { useThemeStore } from '@/stores/themeStore'
+import { THEMES } from '@/utils/themes'
 import { nodeTypes } from './nodes/nodeTypes'
 import { edgeTypes } from './edges/edgeTypes'
 import type { NodeData, EdgeData } from '@/types'
@@ -18,15 +20,19 @@ import type { NodeData, EdgeData } from '@/types'
 interface CanvasContainerProps {
   onConnect?: (connection: Connection) => void
   onEdgeDoubleClick?: (edge: Edge<EdgeData>) => void
+  onNodeDragStart?: () => void
 }
 
-export function CanvasContainer({ onConnect: onConnectProp, onEdgeDoubleClick }: CanvasContainerProps) {
+export function CanvasContainer({ onConnect: onConnectProp, onEdgeDoubleClick, onNodeDragStart }: CanvasContainerProps) {
   const {
     nodes, edges,
     onNodesChange, onEdgesChange,
     setSelectedNode,
   } = useCanvasStore()
 
+  const activeTheme = useThemeStore((s) => s.activeTheme)
+  const theme = THEMES[activeTheme]
+
   const onNodeClick = useCallback((_: React.MouseEvent, node: Node<NodeData>) => {
     setSelectedNode(node.id)
   }, [setSelectedNode])
@@ -39,9 +45,8 @@ export function CanvasContainer({ onConnect: onConnectProp, onEdgeDoubleClick }:
     onEdgeDoubleClick?.(edge)
   }, [onEdgeDoubleClick])
 
-
   return (
-    <div className="w-full h-full">
+    <div className="w-full h-full" style={{ background: theme.colors.canvasBackground }}>
       <ReactFlow
         nodes={nodes}
         edges={edges}
@@ -51,12 +56,13 @@ export function CanvasContainer({ onConnect: onConnectProp, onEdgeDoubleClick }:
         onNodeClick={onNodeClick}
         onPaneClick={onPaneClick}
         onEdgeDoubleClick={handleEdgeDoubleClick}
+        onNodeDragStart={onNodeDragStart}
         nodeTypes={nodeTypes}
         edgeTypes={edgeTypes}
         snapToGrid
         snapGrid={[16, 16]}
         fitView
-        colorMode="dark"
+        colorMode={theme.colors.reactFlowColorMode}
         elevateNodesOnSelect={false}
         connectionMode={ConnectionMode.Loose}
         isValidConnection={(connection) => connection.source !== connection.target}
@@ -65,7 +71,7 @@ export function CanvasContainer({ onConnect: onConnectProp, onEdgeDoubleClick }:
           variant={BackgroundVariant.Dots}
           gap={24}
           size={1}
-          color="#30363d"
+          color={theme.colors.canvasDotColor}
         />
         <Controls />
       </ReactFlow>

frontend/src/components/canvas/edges/index.tsx

@@ -3,10 +3,13 @@ import {
   EdgeLabelRenderer,
   getBezierPath,
   getSmoothStepPath,
+  useStore,
   type EdgeProps,
   type Edge,
 } from '@xyflow/react'
 import type { EdgeData, EdgeType } from '@/types'
+import { useThemeStore } from '@/stores/themeStore'
+import { THEMES } from '@/utils/themes'
 
 const VLAN_COLORS = ['#00d4ff', '#a855f7', '#39d353', '#ff6e00', '#e3b341', '#f85149']
 
@@ -15,42 +18,83 @@ function getVlanColor(vlanId?: number): string {
   return VLAN_COLORS[vlanId % VLAN_COLORS.length]
 }
 
-const EDGE_STYLES: Record<EdgeType, React.CSSProperties> = {
-  ethernet: { stroke: '#30363d', strokeWidth: 2 },
-  wifi: { stroke: '#00d4ff', strokeWidth: 1.5, strokeDasharray: '6 3' },
-  iot: { stroke: '#e3b341', strokeWidth: 1.5, strokeDasharray: '2 4' },
-  vlan: { strokeWidth: 2.5 },
-  virtual: { stroke: '#8b949e', strokeWidth: 1, strokeDasharray: '4 4' },
-  cluster: { stroke: '#ff6e00', strokeWidth: 2.5, strokeDasharray: '8 3' },
-}
+export function HomelableEdge({ id, source, target, sourceX, sourceY, targetX, targetY, sourcePosition, targetPosition, data, selected }: EdgeProps<Edge<EdgeData>>) {
+  const activeTheme = useThemeStore((s) => s.activeTheme)
+  const theme = THEMES[activeTheme]
+  const sourceType = useStore((s) => s.nodeLookup.get(source)?.type)
+  const targetType = useStore((s) => s.nodeLookup.get(target)?.type)
+  const isBidirectional = sourceType === 'proxmox' && targetType === 'proxmox'
 
-export function HomelableEdge({ id, sourceX, sourceY, targetX, targetY, sourcePosition, targetPosition, data, selected }: EdgeProps<Edge<EdgeData>>) {
   const pathArgs = { sourceX, sourceY, sourcePosition, targetX, targetY, targetPosition }
   const [edgePath, labelX, labelY] = data?.path_style === 'smooth'
     ? getSmoothStepPath({ ...pathArgs, borderRadius: 8 })
     : getBezierPath(pathArgs)
 
   const edgeType: EdgeType = data?.type ?? 'ethernet'
+  const edgeColors = theme.colors.edgeColors
+
+  const BASE_STYLES: Record<EdgeType, React.CSSProperties> = {
+    ethernet: { stroke: edgeColors.ethernet, strokeWidth: 2 },
+    wifi:     { stroke: edgeColors.wifi,     strokeWidth: 1.5, strokeDasharray: '6 3' },
+    iot:      { stroke: edgeColors.iot,      strokeWidth: 1.5, strokeDasharray: '2 4' },
+    vlan:     { strokeWidth: 2.5 },
+    virtual:  { stroke: edgeColors.virtual,  strokeWidth: 1,   strokeDasharray: '4 4' },
+    cluster:  { stroke: edgeColors.cluster,  strokeWidth: 2.5, strokeDasharray: '8 3' },
+  }
+
   const customColor = data?.custom_color as string | undefined
   const style: React.CSSProperties = {
-    ...EDGE_STYLES[edgeType],
+    ...BASE_STYLES[edgeType],
     ...(edgeType === 'vlan' ? { stroke: getVlanColor(data?.vlan_id as number | undefined) } : {}),
     ...(customColor ? { stroke: customColor } : {}),
-    ...(selected ? { stroke: '#00d4ff', filter: 'drop-shadow(0 0 4px #00d4ff88)' } : {}),
+    ...(selected ? { stroke: theme.colors.edgeSelectedColor, filter: `drop-shadow(0 0 4px ${theme.colors.edgeSelectedColor}88)` } : {}),
   }
 
+  // Animated dot: slightly brighter + thicker than the base edge, travels source→target
+  const dotColor = customColor ?? (edgeType === 'vlan' ? getVlanColor(data?.vlan_id as number | undefined) : edgeColors[edgeType as keyof typeof edgeColors] as string)
+  const dotWidth = ((style.strokeWidth as number ?? 2) + 1.5) * 2
+
   return (
     <>
       <BaseEdge id={id} path={edgePath} style={style} />
+      {data?.animated && (
+        <path
+          d={edgePath}
+          fill="none"
+          stroke={dotColor}
+          strokeWidth={dotWidth}
+          strokeDasharray="20 10000"
+          strokeLinecap="round"
+          style={{ pointerEvents: 'none' }}
+        >
+          {isBidirectional ? (
+            <animate
+              attributeName="stroke-dashoffset"
+              values="-10000;0;-10000"
+              keyTimes="0;0.5;1"
+              dur="20s"
+              repeatCount="indefinite"
+            />
+          ) : (
+            <animate
+              attributeName="stroke-dashoffset"
+              from="-10000"
+              to="0"
+              dur="10s"
+              repeatCount="indefinite"
+            />
+          )}
+        </path>
+      )}
       {data?.label && (
         <EdgeLabelRenderer>
           <div
             className="absolute pointer-events-none font-mono text-[10px] px-1 rounded"
             style={{
               transform: `translate(-50%, -50%) translate(${labelX}px, ${labelY}px)`,
-              background: '#161b22',
-              color: '#8b949e',
-              border: '1px solid #30363d',
+              background: theme.colors.edgeLabelBackground,
+              color:      theme.colors.edgeLabelColor,
+              border:     `1px solid ${theme.colors.edgeLabelBorder}`,
             }}
           >
             {data.label as string}

frontend/src/components/canvas/nodes/BaseNode.tsx

@@ -1,25 +1,26 @@
 import { createElement } from 'react'
 import { Handle, Position, type NodeProps, type Node } from '@xyflow/react'
 import { type LucideIcon } from 'lucide-react'
-import type { NodeData, NodeStatus } from '@/types'
+import type { NodeData } from '@/types'
 import { resolveNodeColors } from '@/utils/nodeColors'
 import { resolveNodeIcon } from '@/utils/nodeIcons'
-
-const STATUS_COLORS: Record<NodeStatus, string> = {
-  online: '#39d353',
-  offline: '#f85149',
-  pending: '#e3b341',
-  unknown: '#8b949e',
-}
+import { useThemeStore } from '@/stores/themeStore'
+import { THEMES } from '@/utils/themes'
+import { useCanvasStore } from '@/stores/canvasStore'
+import { maskIp } from '@/utils/maskIp'
 
 interface BaseNodeProps extends NodeProps<Node<NodeData>> {
   icon: LucideIcon
 }
 
 export function BaseNode({ data, selected, icon: typeIcon }: BaseNodeProps) {
+  const activeTheme = useThemeStore((s) => s.activeTheme)
+  const hideIp = useCanvasStore((s) => s.hideIp)
+  const theme = THEMES[activeTheme]
+
   const resolvedIcon = resolveNodeIcon(typeIcon, data.custom_icon)
-  const colors = resolveNodeColors(data)
-  const statusColor = STATUS_COLORS[data.status]
+  const colors = resolveNodeColors(data, activeTheme)
+  const statusColor = theme.colors.statusColors[data.status]
   const isOnline = data.status === 'online'
 
   return (
@@ -38,25 +39,41 @@ export function BaseNode({ data, selected, icon: typeIcon }: BaseNodeProps) {
         minWidth: 140,
       }}
     >
-      <Handle type="source" position={Position.Top} id="top" className="!bg-[#30363d] !border-[#8b949e]" />
+      <Handle
+        type="source"
+        position={Position.Top}
+        id="top"
+        style={{ background: theme.colors.handleBackground, borderColor: theme.colors.handleBorder }}
+      />
       <Handle type="target" position={Position.Top} id="top-t" style={{ opacity: 0, width: 12, height: 12 }} />
 
       {/* Icon */}
       <div
         className="flex items-center justify-center w-7 h-7 rounded-md shrink-0"
-        style={{ color: isOnline ? colors.icon : '#8b949e', background: '#161b22' }}
+        style={{
+          color: isOnline ? colors.icon : theme.colors.nodeSubtextColor,
+          background: theme.colors.nodeIconBackground,
+        }}
       >
         {createElement(resolvedIcon, { size: 15 })}
       </div>
 
       {/* Details */}
       <div className="flex flex-col min-w-0">
-        <div className="text-xs font-medium leading-tight truncate max-w-[110px]" title={data.label}>
+        <div
+          className="text-xs font-medium leading-tight truncate max-w-[110px]"
+          style={{ color: theme.colors.nodeLabelColor }}
+          title={data.label}
+        >
           {data.label}
         </div>
         {data.ip && (
-          <div className="font-mono text-[10px] text-[#8b949e] truncate" title={data.ip}>
-            {data.ip}
+          <div
+            className="font-mono text-[10px] truncate"
+            style={{ color: theme.colors.nodeSubtextColor }}
+            title={data.ip}
+          >
+            {hideIp ? maskIp(data.ip) : data.ip}
           </div>
         )}
       </div>
@@ -68,7 +85,12 @@ export function BaseNode({ data, selected, icon: typeIcon }: BaseNodeProps) {
         title={data.status}
       />
 
-      <Handle type="source" position={Position.Bottom} id="bottom" className="!bg-[#30363d] !border-[#8b949e]" />
+      <Handle
+        type="source"
+        position={Position.Bottom}
+        id="bottom"
+        style={{ background: theme.colors.handleBackground, borderColor: theme.colors.handleBorder }}
+      />
       <Handle type="target" position={Position.Bottom} id="bottom-t" style={{ opacity: 0, width: 12, height: 12 }} />
     </div>
   )

frontend/src/components/canvas/nodes/ProxmoxGroupNode.tsx

@@ -1,34 +1,46 @@
 import { Handle, Position, NodeResizer, type NodeProps, type Node } from '@xyflow/react'
 import { Layers } from 'lucide-react'
-import type { NodeData, NodeStatus } from '@/types'
+import type { NodeData } from '@/types'
 import { resolveNodeColors } from '@/utils/nodeColors'
+import { useThemeStore } from '@/stores/themeStore'
+import { THEMES } from '@/utils/themes'
 import { BaseNode } from './BaseNode'
 
-const STATUS_COLORS: Record<NodeStatus, string> = {
-  online: '#39d353',
-  offline: '#f85149',
-  pending: '#e3b341',
-  unknown: '#8b949e',
-}
-
 export function ProxmoxGroupNode(props: NodeProps<Node<NodeData>>) {
   const { data, selected } = props
-  const colors = resolveNodeColors(data)
+
+  const activeTheme = useThemeStore((s) => s.activeTheme)
+  const theme = THEMES[activeTheme]
+  const colors = resolveNodeColors(data, activeTheme)
 
   // Render as a regular node when container mode is disabled
   if (data.container_mode === false) {
+    const proxmoxAccent = theme.colors.nodeAccents.proxmox.border
     return (
       <>
         <BaseNode {...props} icon={Layers} />
-        <Handle type="source" position={Position.Left} id="cluster-left" title="Same cluster" style={{ background: '#ff6e00', borderColor: '#ff6e0088', width: 6, height: 6 }} />
-        <Handle type="source" position={Position.Right} id="cluster-right" title="Same cluster" style={{ background: '#ff6e00', borderColor: '#ff6e0088', width: 6, height: 6 }} />
+        <Handle
+          type="source"
+          position={Position.Left}
+          id="cluster-left"
+          title="Same cluster"
+          style={{ background: proxmoxAccent, borderColor: `${proxmoxAccent}88`, width: 6, height: 6 }}
+        />
+        <Handle
+          type="source"
+          position={Position.Right}
+          id="cluster-right"
+          title="Same cluster"
+          style={{ background: proxmoxAccent, borderColor: `${proxmoxAccent}88`, width: 6, height: 6 }}
+        />
       </>
     )
   }
 
-  const statusColor = STATUS_COLORS[data.status]
+  const statusColor = theme.colors.statusColors[data.status]
   const isOnline = data.status === 'online'
   const glow = colors.border
+  const proxmoxAccent = theme.colors.nodeAccents.proxmox.border
 
   return (
     <>
@@ -37,7 +49,7 @@ export function ProxmoxGroupNode(props: NodeProps<Node<NodeData>>) {
         minHeight={160}
         isVisible={selected}
         lineStyle={{ borderColor: glow, opacity: 0.6 }}
-        handleStyle={{ borderColor: glow, backgroundColor: '#21262d' }}
+        handleStyle={{ borderColor: glow, backgroundColor: theme.colors.nodeCardBackground }}
       />
 
       {/* Group border */}
@@ -56,38 +68,78 @@ export function ProxmoxGroupNode(props: NodeProps<Node<NodeData>>) {
         {/* Header bar */}
         <div
           className="flex items-center gap-2 px-2.5 py-1.5 shrink-0"
-          style={{ background: isOnline ? `${glow}18` : '#161b2288', borderBottom: `1px solid ${isOnline ? `${glow}33` : '#30363d'}` }}
+          style={{
+            background: isOnline ? `${glow}18` : `${theme.colors.nodeIconBackground}88`,
+            borderBottom: `1px solid ${isOnline ? `${glow}33` : theme.colors.handleBackground}`,
+          }}
         >
           <div
             className="flex items-center justify-center w-5 h-5 rounded-md shrink-0"
-            style={{ color: isOnline ? colors.icon : '#8b949e', background: '#161b22' }}
+            style={{
+              color: isOnline ? colors.icon : theme.colors.nodeSubtextColor,
+              background: theme.colors.nodeIconBackground,
+            }}
           >
             <Layers size={12} />
           </div>
           <div className="flex flex-col min-w-0 flex-1">
-            <span className="text-[11px] font-semibold leading-tight truncate" style={{ color: isOnline ? glow : '#c9d1d9' }}>
+            <span
+              className="text-[11px] font-semibold leading-tight truncate"
+              style={{ color: isOnline ? glow : theme.colors.nodeLabelColor }}
+            >
               {data.label}
             </span>
             {data.ip && (
-              <span className="font-mono text-[9px] text-[#8b949e] truncate">{data.ip}</span>
+              <span
+                className="font-mono text-[9px] truncate"
+                style={{ color: theme.colors.nodeSubtextColor }}
+              >
+                {data.ip}
+              </span>
             )}
           </div>
           {/* Status dot */}
-          <div className="w-1.5 h-1.5 rounded-full shrink-0" style={{ backgroundColor: statusColor }} title={data.status} />
+          <div
+            className="w-1.5 h-1.5 rounded-full shrink-0"
+            style={{ backgroundColor: statusColor }}
+            title={data.status}
+          />
         </div>
 
         {/* Inner area — React Flow places children here */}
         <div className="flex-1 relative" />
       </div>
 
-      <Handle type="source" position={Position.Top} id="top" className="!bg-[#30363d] !border-[#8b949e]" />
+      <Handle
+        type="source"
+        position={Position.Top}
+        id="top"
+        style={{ background: theme.colors.handleBackground, borderColor: theme.colors.handleBorder }}
+      />
       <Handle type="target" position={Position.Top} id="top-t" style={{ opacity: 0, width: 12, height: 12 }} />
-      <Handle type="source" position={Position.Bottom} id="bottom" className="!bg-[#30363d] !border-[#8b949e]" />
+      <Handle
+        type="source"
+        position={Position.Bottom}
+        id="bottom"
+        style={{ background: theme.colors.handleBackground, borderColor: theme.colors.handleBorder }}
+      />
       <Handle type="target" position={Position.Bottom} id="bottom-t" style={{ opacity: 0, width: 12, height: 12 }} />
 
-      {/* Cluster handles — left/right for same-cluster links */}
-      <Handle type="source" position={Position.Left} id="cluster-left" title="Same cluster" style={{ background: '#ff6e00', borderColor: '#ff6e0088', width: 6, height: 6 }} />
-      <Handle type="source" position={Position.Right} id="cluster-right" title="Same cluster" style={{ background: '#ff6e00', borderColor: '#ff6e0088', width: 6, height: 6 }} />
+      {/* Cluster handles */}
+      <Handle
+        type="source"
+        position={Position.Left}
+        id="cluster-left"
+        title="Same cluster"
+        style={{ background: proxmoxAccent, borderColor: `${proxmoxAccent}88`, width: 6, height: 6 }}
+      />
+      <Handle
+        type="source"
+        position={Position.Right}
+        id="cluster-right"
+        title="Same cluster"
+        style={{ background: proxmoxAccent, borderColor: `${proxmoxAccent}88`, width: 6, height: 6 }}
+      />
     </>
   )
 }

frontend/src/components/modals/EdgeModal.tsx

@@ -25,6 +25,7 @@ export function EdgeModal({ open, onClose, onSubmit, onDelete, initial, title =
   const [vlanId, setVlanId] = useState(initial?.vlan_id?.toString() ?? '')
   const [customColor, setCustomColor] = useState<string | undefined>(initial?.custom_color)
   const [pathStyle, setPathStyle] = useState<EdgePathStyle>(initial?.path_style ?? 'bezier')
+  const [animated, setAnimated] = useState(initial?.animated ?? false)
 
   const effectiveColor = customColor ?? EDGE_DEFAULT_COLORS[type]
 
@@ -36,6 +37,7 @@ export function EdgeModal({ open, onClose, onSubmit, onDelete, initial, title =
       vlan_id: type === 'vlan' && vlanId ? parseInt(vlanId) : undefined,
       custom_color: customColor,
       path_style: pathStyle,
+      animated: animated || undefined,
     })
     onClose()
   }
@@ -113,6 +115,22 @@ export function EdgeModal({ open, onClose, onSubmit, onDelete, initial, title =
             </div>
           </div>
 
+          <div className="flex items-center justify-between">
+            <Label className="text-xs text-muted-foreground">Flow Animation</Label>
+            <button
+              type="button"
+              onClick={() => setAnimated((a) => !a)}
+              className="relative w-9 h-5 rounded-full transition-colors focus:outline-none shrink-0"
+              style={{ background: animated ? '#00d4ff' : '#30363d' }}
+              aria-pressed={animated}
+            >
+              <span
+                className="absolute top-0.5 left-0.5 w-4 h-4 rounded-full bg-white shadow transition-transform"
+                style={{ transform: animated ? 'translateX(16px)' : 'translateX(0)' }}
+              />
+            </button>
+          </div>
+
           <div className="flex flex-col gap-1.5">
             <div className="flex items-center justify-between">
               <Label className="text-xs text-muted-foreground">Color</Label>

frontend/src/components/modals/GroupRectModal.tsx

@@ -93,7 +93,7 @@ export function GroupRectModal({ open, onClose, onSubmit, onDelete, initial, tit
           {/* Font */}
           <div className="flex flex-col gap-1.5">
             <Label className="text-xs text-muted-foreground">Font</Label>
-            <Select value={form.font} onValueChange={(v) => set('font', v)}>
+            <Select value={form.font} onValueChange={(v: string | null) => set('font', v ?? 'inter')}>
               <SelectTrigger className="bg-[#21262d] border-[#30363d] text-sm h-8">
                 <SelectValue />
               </SelectTrigger>
@@ -160,7 +160,7 @@ export function GroupRectModal({ open, onClose, onSubmit, onDelete, initial, tit
           {/* Z-order */}
           <div className="flex flex-col gap-1.5">
             <Label className="text-xs text-muted-foreground">Z-Order (1 = furthest back)</Label>
-            <Select value={String(form.z_order)} onValueChange={(v) => set('z_order', Number(v))}>
+            <Select value={String(form.z_order)} onValueChange={(v: string | null) => set('z_order', v !== null ? Number(v) : 1)}>
               <SelectTrigger className="bg-[#21262d] border-[#30363d] text-sm h-8">
                 <SelectValue />
               </SelectTrigger>

frontend/src/components/modals/SearchModal.tsx

@@ -0,0 +1,84 @@
+import { useState, useCallback } from 'react'
+import { useReactFlow } from '@xyflow/react'
+import { Search } from 'lucide-react'
+import { useCanvasStore } from '@/stores/canvasStore'
+
+interface SearchModalProps {
+  open: boolean
+  onClose: () => void
+}
+
+export function SearchModal({ open, onClose }: SearchModalProps) {
+  const [query, setQuery] = useState('')
+  const nodes = useCanvasStore((s) => s.nodes)
+  const setSelectedNode = useCanvasStore((s) => s.setSelectedNode)
+  const { fitView } = useReactFlow()
+
+  const searchable = nodes.filter((n) => n.data.type !== 'groupRect')
+  const q = query.toLowerCase()
+  const results = q.length === 0 ? [] : searchable.filter((n) =>
+    n.data.label?.toLowerCase().includes(q) ||
+    n.data.ip?.toLowerCase().includes(q) ||
+    n.data.hostname?.toLowerCase().includes(q)
+  ).slice(0, 8)
+
+  const handleSelect = useCallback((nodeId: string) => {
+    setSelectedNode(nodeId)
+    fitView({ nodes: [{ id: nodeId }], duration: 600, padding: 0.4, maxZoom: 1.5 })
+    onClose()
+    setQuery('')
+  }, [fitView, setSelectedNode, onClose])
+
+  if (!open) return null
+
+  return (
+    <div className="fixed inset-0 z-50 flex items-start justify-center pt-24" onClick={onClose}>
+      <div
+        className="bg-[#161b22] border border-border rounded-lg shadow-2xl w-full max-w-md"
+        onClick={(e) => e.stopPropagation()}
+      >
+        <div className="flex items-center gap-2 px-4 py-3 border-b border-border">
+          <Search size={16} className="text-muted-foreground shrink-0" />
+          <input
+            autoFocus
+            value={query}
+            onChange={(e) => setQuery(e.target.value)}
+            placeholder="Search nodes by label, IP, hostname…"
+            className="flex-1 bg-transparent text-sm text-foreground placeholder:text-muted-foreground outline-none"
+            onKeyDown={(e) => {
+              if (e.key === 'Escape') { onClose(); setQuery('') }
+              if (e.key === 'Enter' && results.length > 0) handleSelect(results[0].id)
+            }}
+          />
+          <kbd className="text-[10px] text-muted-foreground border border-border rounded px-1">ESC</kbd>
+        </div>
+
+        {results.length > 0 && (
+          <ul className="py-1 max-h-64 overflow-y-auto">
+            {results.map((node) => (
+              <li
+                key={node.id}
+                className="flex items-center gap-3 px-4 py-2 hover:bg-[#21262d] cursor-pointer"
+                onClick={() => handleSelect(node.id)}
+              >
+                <span className="text-xs font-mono text-[#00d4ff] w-16 shrink-0">{node.data.type}</span>
+                <span className="text-sm text-foreground font-medium flex-1 truncate">{node.data.label}</span>
+                {node.data.ip && (
+                  <span className="text-xs font-mono text-muted-foreground shrink-0">{node.data.ip}</span>
+                )}
+              </li>
+            ))}
+          </ul>
+        )}
+
+        {q.length > 0 && results.length === 0 && (
+          <p className="px-4 py-3 text-sm text-muted-foreground">No nodes match "{query}"</p>
+        )}
+
+        {q.length === 0 && (
+          <p className="px-4 py-3 text-xs text-muted-foreground">Type to search nodes…</p>
+        )}
+      </div>
+    </div>
+  )
+}

frontend/src/components/modals/ShortcutsModal.tsx

@@ -0,0 +1,84 @@
+import { X } from 'lucide-react'
+import { Button } from '@/components/ui/button'
+
+const SHORTCUTS = [
+  {
+    group: 'Canvas',
+    items: [
+      { keys: ['Ctrl', 'S'], description: 'Save canvas' },
+      { keys: ['Ctrl', 'Z'], description: 'Undo' },
+      { keys: ['Ctrl', 'Y'], description: 'Redo' },
+      { keys: ['Ctrl', 'K'], description: 'Search nodes' },
+      { keys: ['?'], description: 'Show this help' },
+    ],
+  },
+  {
+    group: 'Nodes',
+    items: [
+      { keys: ['Ctrl', 'C'], description: 'Copy selected nodes' },
+      { keys: ['Ctrl', 'V'], description: 'Paste nodes' },
+      { keys: ['Del'], description: 'Delete selected node/edge' },
+    ],
+  },
+  {
+    group: 'Navigation',
+    items: [
+      { keys: ['Scroll'], description: 'Zoom in / out' },
+      { keys: ['Space', '+', 'Drag'], description: 'Pan canvas' },
+      { keys: ['Ctrl', 'Shift', 'F'], description: 'Fit view' },
+    ],
+  },
+]
+
+interface ShortcutsModalProps {
+  open: boolean
+  onClose: () => void
+}
+
+export function ShortcutsModal({ open, onClose }: ShortcutsModalProps) {
+  if (!open) return null
+
+  return (
+    <div className="fixed inset-0 z-50 flex items-center justify-center" onClick={onClose}>
+      <div
+        className="bg-[#161b22] border border-border rounded-lg shadow-2xl w-full max-w-sm"
+        onClick={(e) => e.stopPropagation()}
+      >
+        <div className="flex items-center justify-between px-4 py-3 border-b border-border">
+          <h2 className="text-sm font-semibold text-foreground">Keyboard Shortcuts</h2>
+          <Button size="sm" variant="ghost" className="h-6 w-6 p-0" onClick={onClose}>
+            <X size={14} />
+          </Button>
+        </div>
+
+        <div className="p-4 space-y-4">
+          {SHORTCUTS.map((group) => (
+            <div key={group.group}>
+              <p className="text-xs text-[#00d4ff] font-semibold mb-2 uppercase tracking-wide">
+                {group.group}
+              </p>
+              <div className="space-y-1.5">
+                {group.items.map((item) => (
+                  <div key={item.description} className="flex items-center justify-between gap-4">
+                    <span className="text-sm text-muted-foreground">{item.description}</span>
+                    <div className="flex items-center gap-1 shrink-0">
+                      {item.keys.map((k, i) => (
+                        k === '+' ? (
+                          <span key={i} className="text-xs text-muted-foreground">+</span>
+                        ) : (
+                          <kbd key={k} className="text-[11px] text-foreground border border-border rounded px-1.5 py-0.5 font-mono bg-[#0d1117]">
+                            {k}
+                          </kbd>
+                        )
+                      ))}
+                    </div>
+                  </div>
+                ))}
+              </div>
+            </div>
+          ))}
+        </div>
+      </div>
+    </div>
+  )
+}

frontend/src/components/modals/ThemeModal.tsx

@@ -0,0 +1,167 @@
+import { useState } from 'react'
+import { toast } from 'sonner'
+import { Check } from 'lucide-react'
+import { Dialog, DialogContent, DialogHeader, DialogTitle } from '@/components/ui/dialog'
+import { Button } from '@/components/ui/button'
+import { THEMES, THEME_ORDER, type ThemeId } from '@/utils/themes'
+import { useThemeStore } from '@/stores/themeStore'
+import { useCanvasStore } from '@/stores/canvasStore'
+
+// Node-type accent colors to display as preview swatches
+const PREVIEW_TYPES = ['isp', 'server', 'proxmox', 'switch', 'iot'] as const
+
+interface ThemeCardProps {
+  themeId: ThemeId
+  selected: boolean
+  onClick: () => void
+}
+
+function ThemeCard({ themeId, selected, onClick }: ThemeCardProps) {
+  const preset = THEMES[themeId]
+  const c = preset.colors
+
+  return (
+    <button
+      type="button"
+      onClick={onClick}
+      className="relative rounded-xl border-2 p-3 text-left transition-all duration-150 focus:outline-none w-full"
+      style={{
+        borderColor: selected ? c.nodeAccents.isp.border : c.handleBackground,
+        background: c.canvasBackground,
+        boxShadow: selected ? `0 0 0 1px ${c.nodeAccents.isp.border}44, 0 0 12px ${c.nodeAccents.isp.border}22` : 'none',
+      }}
+    >
+      {/* Selected checkmark */}
+      {selected && (
+        <span
+          className="absolute top-2 right-2 flex items-center justify-center w-4 h-4 rounded-full"
+          style={{ background: c.nodeAccents.isp.border }}
+        >
+          <Check size={10} style={{ color: c.canvasBackground }} />
+        </span>
+      )}
+
+      {/* Mini canvas preview */}
+      <div
+        className="rounded-md mb-2.5 flex flex-col gap-1.5 p-2"
+        style={{ background: c.nodeCardBackground, border: `1px solid ${c.handleBackground}` }}
+      >
+        {/* Node accent dots */}
+        <div className="flex gap-1 items-center flex-wrap">
+          {PREVIEW_TYPES.map((type) => (
+            <span
+              key={type}
+              className="w-2.5 h-2.5 rounded-full shrink-0"
+              style={{ backgroundColor: c.nodeAccents[type].border }}
+            />
+          ))}
+        </div>
+        {/* Edge line */}
+        <div style={{ height: 2, background: c.edgeColors.ethernet, width: '80%', borderRadius: 2 }} />
+        {/* Wifi dashed line */}
+        <div
+          style={{
+            height: 1,
+            width: '55%',
+            backgroundImage: `repeating-linear-gradient(90deg, ${c.edgeColors.wifi} 0 5px, transparent 5px 8px)`,
+          }}
+        />
+      </div>
+
+      {/* Label */}
+      <div
+        className="text-xs font-semibold leading-tight"
+        style={{ color: c.nodeLabelColor }}
+      >
+        {preset.label}
+      </div>
+      <div
+        className="text-[10px] leading-snug mt-0.5 line-clamp-2"
+        style={{ color: c.nodeSubtextColor }}
+      >
+        {preset.description}
+      </div>
+    </button>
+  )
+}
+
+interface ThemeModalProps {
+  open: boolean
+  onClose: () => void
+}
+
+export function ThemeModal({ open, onClose }: ThemeModalProps) {
+  const { activeTheme, setTheme } = useThemeStore()
+  const { markUnsaved } = useCanvasStore()
+
+  // Capture the theme that was active when the modal opened
+  const [originalTheme] = useState<ThemeId>(activeTheme)
+  const [selected, setSelected] = useState<ThemeId>(activeTheme)
+
+  const handleSelect = (id: ThemeId) => {
+    setSelected(id)
+    // Live-preview the selected theme on the canvas
+    setTheme(id)
+  }
+
+  const handleApply = () => {
+    setTheme(selected)
+    markUnsaved()
+    onClose()
+    toast.info('Style applied — save your canvas to make it permanent', {
+      duration: 5000,
+    })
+  }
+
+  const handleCancel = () => {
+    // Revert to the original theme
+    setTheme(originalTheme)
+    onClose()
+  }
+
+  return (
+    <Dialog open={open} onOpenChange={(o) => { if (!o) handleCancel() }}>
+      <DialogContent className="bg-[#161b22] border-[#30363d] w-[90vw] max-w-4xl">
+        <DialogHeader>
+          <DialogTitle className="text-sm font-semibold">Choose Canvas Style</DialogTitle>
+        </DialogHeader>
+
+        <div className="grid grid-cols-5 gap-3 py-1">
+          {THEME_ORDER.map((id) => (
+            <ThemeCard
+              key={id}
+              themeId={id}
+              selected={selected === id}
+              onClick={() => handleSelect(id)}
+            />
+          ))}
+        </div>
+
+        <div className="flex justify-end gap-2 pt-1">
+          <Button
+            type="button"
+            size="sm"
+            variant="ghost"
+            className="text-muted-foreground hover:text-foreground"
+            onClick={handleCancel}
+          >
+            Cancel
+          </Button>
+          <Button
+            type="button"
+            size="sm"
+            className="bg-[#00d4ff] text-[#0d1117] hover:bg-[#00d4ff]/90"
+            style={
+              selected !== 'default'
+                ? { background: THEMES[selected].colors.nodeAccents.isp.border }
+                : undefined
+            }
+            onClick={handleApply}
+          >
+            Apply Style
+          </Button>
+        </div>
+      </DialogContent>
+    </Dialog>
+  )
+}

frontend/src/components/modals/__tests__/ShortcutsModal.test.tsx

@@ -0,0 +1,38 @@
+import { describe, it, expect, vi } from 'vitest'
+import { render, screen, fireEvent } from '@testing-library/react'
+import { ShortcutsModal } from '../ShortcutsModal'
+
+describe('ShortcutsModal', () => {
+  it('renders nothing when closed', () => {
+    const { container } = render(<ShortcutsModal open={false} onClose={vi.fn()} />)
+    expect(container.firstChild).toBeNull()
+  })
+
+  it('renders shortcut groups when open', () => {
+    render(<ShortcutsModal open={true} onClose={vi.fn()} />)
+    expect(screen.getByText('Keyboard Shortcuts')).toBeDefined()
+    expect(screen.getByText('Canvas')).toBeDefined()
+    expect(screen.getByText('Nodes')).toBeDefined()
+    expect(screen.getByText('Navigation')).toBeDefined()
+  })
+
+  it('shows key shortcuts in kbd elements', () => {
+    render(<ShortcutsModal open={true} onClose={vi.fn()} />)
+    expect(screen.getAllByText('Ctrl').length).toBeGreaterThan(0)
+  })
+
+  it('calls onClose when backdrop clicked', () => {
+    const onClose = vi.fn()
+    const { container } = render(<ShortcutsModal open={true} onClose={onClose} />)
+    fireEvent.click(container.firstChild as HTMLElement)
+    expect(onClose).toHaveBeenCalled()
+  })
+
+  it('calls onClose when X button clicked', () => {
+    const onClose = vi.fn()
+    render(<ShortcutsModal open={true} onClose={onClose} />)
+    const buttons = screen.getAllByRole('button')
+    fireEvent.click(buttons[0])
+    expect(onClose).toHaveBeenCalled()
+  })
+})

frontend/src/components/panels/DetailPanel.tsx

@@ -76,7 +76,21 @@ export function DetailPanel({ onEdit }: DetailPanelProps) {
       {/* Details */}
       <div className="flex flex-col gap-3 px-4 py-3 text-sm">
         <DetailRow label="Type" value={NODE_TYPE_LABELS[data.type]} />
-        {data.hostname && <DetailRow label="Hostname" value={data.hostname} mono />}
+        {data.hostname && (
+          <div className="flex justify-between gap-2 items-baseline">
+            <span className="text-muted-foreground text-xs shrink-0">Hostname</span>
+            <a
+              href={`http://${data.hostname}`}
+              target="_blank"
+              rel="noopener noreferrer"
+              className="text-xs font-mono text-[#00d4ff] hover:underline truncate flex items-center gap-1"
+              title={data.hostname}
+            >
+              {data.hostname}
+              <ExternalLink size={10} className="shrink-0" />
+            </a>
+          </div>
+        )}
         {data.ip && <DetailRow label="IP Address" value={data.ip} mono />}
         {data.mac && <DetailRow label="MAC" value={data.mac} mono />}
         {data.os && <DetailRow label="OS" value={data.os} />}

frontend/src/components/panels/Sidebar.tsx

@@ -1,5 +1,6 @@
 import { useState, useCallback, useEffect, useRef } from 'react'
-import { Network, Plus, Save, ScanLine, ChevronLeft, ChevronRight, LayoutDashboard, Clock, EyeOff, Trash2, RefreshCw, Loader2, Square } from 'lucide-react'
+import { Plus, Save, ScanLine, ChevronLeft, ChevronRight, LayoutDashboard, Clock, EyeOff, Trash2, RefreshCw, Loader2, Square, Eye } from 'lucide-react'
+import { Logo } from '@/components/ui/Logo'
 import { Tooltip, TooltipContent, TooltipTrigger } from '@/components/ui/tooltip'
 import { useCanvasStore } from '@/stores/canvasStore'
 import { scanApi } from '@/api/client'
@@ -39,7 +40,7 @@ interface SidebarProps {
 export function Sidebar({ onAddNode, onAddGroupRect, onScan, onSave, onNodeApproved }: SidebarProps) {
   const [collapsed, setCollapsed] = useState(false)
   const [activeView, setActiveView] = useState<SidebarView>('canvas')
-  const { nodes, hasUnsavedChanges } = useCanvasStore()
+  const { nodes, hasUnsavedChanges, hideIp, toggleHideIp } = useCanvasStore()
 
   const networkNodes = nodes.filter((n) => n.data.type !== 'groupRect')
   const onlineCount = networkNodes.filter((n) => n.data.status === 'online').length
@@ -70,13 +71,8 @@ export function Sidebar({ onAddNode, onAddGroupRect, onScan, onSave, onNodeAppro
       </button>
 
       {/* Logo */}
-      <div className="flex items-center gap-2 px-3 py-4 border-b border-border">
-        <div className="flex items-center justify-center w-7 h-7 rounded-md bg-[#00d4ff]/10 text-[#00d4ff] shrink-0">
-          <Network size={16} />
-        </div>
-        {!collapsed && (
-          <span className="font-semibold text-sm tracking-wide text-foreground">Homelable</span>
-        )}
+      <div className="flex items-center px-3 py-4 border-b border-border overflow-hidden">
+        <Logo size={28} showText={!collapsed} />
       </div>
 
       {/* Views */}
@@ -130,6 +126,13 @@ export function Sidebar({ onAddNode, onAddGroupRect, onScan, onSave, onNodeAppro
         <SidebarItem icon={Plus} label="Add Node" collapsed={collapsed} onClick={onAddNode} />
         <SidebarItem icon={Square} label="Add Rectangle" collapsed={collapsed} onClick={onAddGroupRect} />
         {!STANDALONE && <SidebarItem icon={ScanLine} label="Scan Network" collapsed={collapsed} onClick={handleScan} />}
+        <SidebarItem
+          icon={hideIp ? EyeOff : Eye}
+          label={hideIp ? 'Show IPs' : 'Hide IPs'}
+          collapsed={collapsed}
+          onClick={toggleHideIp}
+          active={hideIp}
+        />
         <SidebarItem
           icon={Save}
           label="Save Canvas"

frontend/src/components/panels/Toolbar.tsx

@@ -1,25 +1,60 @@
-import { Save, LayoutDashboard, Download } from 'lucide-react'
+import { Save, LayoutDashboard, Download, Palette, Undo2, Redo2, HelpCircle, Table2 } from 'lucide-react'
 import { Button } from '@/components/ui/button'
+import { Logo } from '@/components/ui/Logo'
 import { useCanvasStore } from '@/stores/canvasStore'
 
 interface ToolbarProps {
   onSave: () => void
   onAutoLayout: () => void
   onExport: () => void
+  onChangeStyle: () => void
+  onUndo: () => void
+  onRedo: () => void
+  onShortcuts: () => void
+  onExportMd: () => void
 }
 
-export function Toolbar({ onSave, onAutoLayout, onExport }: ToolbarProps) {
-  const { hasUnsavedChanges } = useCanvasStore()
+export function Toolbar({ onSave, onAutoLayout, onExport, onChangeStyle, onUndo, onRedo, onShortcuts, onExportMd }: ToolbarProps) {
+  const { hasUnsavedChanges, past, future } = useCanvasStore()
 
   return (
     <header className="flex items-center gap-2 px-4 py-2 border-b border-border bg-[#161b22] shrink-0">
+      <Logo size={28} showText={true} />
       <div className="flex-1" />
+      <Button
+        size="sm" variant="ghost"
+        className="gap-1.5 text-muted-foreground hover:text-foreground disabled:opacity-30"
+        onClick={onUndo}
+        disabled={past.length === 0}
+        title="Undo (Ctrl+Z)"
+      >
+        <Undo2 size={14} />
+      </Button>
+      <Button
+        size="sm" variant="ghost"
+        className="gap-1.5 text-muted-foreground hover:text-foreground disabled:opacity-30"
+        onClick={onRedo}
+        disabled={future.length === 0}
+        title="Redo (Ctrl+Y)"
+      >
+        <Redo2 size={14} />
+      </Button>
+      <div className="w-px h-4 bg-border mx-1" />
       <Button size="sm" variant="ghost" className="gap-1.5 text-muted-foreground hover:text-foreground" onClick={onAutoLayout}>
         <LayoutDashboard size={14} /> Auto Layout
       </Button>
-      <Button size="sm" variant="ghost" className="gap-1.5 text-muted-foreground hover:text-foreground" onClick={onExport}>
+      <Button size="sm" variant="ghost" className="gap-1.5 text-muted-foreground hover:text-foreground" onClick={onChangeStyle}>
+        <Palette size={14} /> Style
+      </Button>
+      <Button size="sm" variant="ghost" className="gap-1.5 text-muted-foreground hover:text-foreground" onClick={onExport} title="Export as PNG">
         <Download size={14} /> Export
       </Button>
+      <Button size="sm" variant="ghost" className="gap-1.5 text-muted-foreground hover:text-foreground" onClick={onExportMd} title="Copy inventory as Markdown table">
+        <Table2 size={14} /> MD
+      </Button>
+      <Button size="sm" variant="ghost" className="gap-1.5 text-muted-foreground hover:text-foreground" onClick={onShortcuts} title="Keyboard shortcuts (?)">
+        <HelpCircle size={14} />
+      </Button>
       <Button
         size="sm"
         className="gap-1.5 relative"

frontend/src/components/ui/Logo.tsx

@@ -0,0 +1,46 @@
+interface LogoProps {
+  size?: number;
+  showText?: boolean;
+  className?: string;
+}
+
+export function Logo({ size = 32, showText = true, className = '' }: LogoProps) {
+  return (
+    <div className={`flex items-center gap-2 ${className}`}>
+      <svg
+        width={size}
+        height={size}
+        viewBox="0 0 64 64"
+        fill="none"
+        xmlns="http://www.w3.org/2000/svg"
+      >
+        <circle cx="32" cy="32" r="32" fill="#0d1117" />
+        <path
+          d="M32 12 L52 30 L48 30 L48 52 L16 52 L16 30 L12 30 Z"
+          fill="#161b22"
+          stroke="#00d4ff"
+          strokeWidth="1.5"
+          strokeLinejoin="round"
+        />
+        <rect x="27" y="40" width="10" height="12" rx="1" fill="#0d1117" stroke="#00d4ff" strokeWidth="1" />
+        <circle cx="32" cy="33" r="3" fill="#00d4ff" />
+        <circle cx="22" cy="38" r="2" fill="#39d353" />
+        <line x1="22" y1="38" x2="29" y2="33" stroke="#39d353" strokeWidth="1" opacity="0.7" />
+        <circle cx="42" cy="38" r="2" fill="#39d353" />
+        <line x1="42" y1="38" x2="35" y2="33" stroke="#39d353" strokeWidth="1" opacity="0.7" />
+        <circle cx="32" cy="24" r="2" fill="#a855f7" />
+        <line x1="32" y1="24" x2="32" y2="30" stroke="#a855f7" strokeWidth="1" opacity="0.7" />
+        <circle cx="32" cy="33" r="3" fill="none" stroke="#00d4ff" strokeWidth="1.5" opacity="0.4" />
+      </svg>
+      {showText && (
+        <span
+          className="font-bold tracking-tight"
+          style={{ fontSize: size * 0.55, fontFamily: 'Inter, sans-serif' }}
+        >
+          <span style={{ color: '#00d4ff' }}>Home</span>
+          <span style={{ color: '#ffffff' }}>lable</span>
+        </span>
+      )}
+    </div>
+  );
+}

frontend/src/index.css

@@ -90,7 +90,7 @@
 
 /* React Flow overrides */
 .react-flow__background {
-    background-color: var(--surface-base) !important;
+    background-color: transparent;
 }
 .react-flow__minimap {
     background-color: var(--surface-elevated) !important;
@@ -115,3 +115,13 @@
 .font-mono {
     font-family: 'JetBrains Mono', monospace;
 }
+
+/* Edge flow animation — dot traveling from source to target */
+@keyframes flow-dot {
+    from { stroke-dashoffset: 0; }
+    to   { stroke-dashoffset: -10000; }
+}
+.edge-flow-dot {
+    animation: flow-dot 2.5s linear infinite;
+    pointer-events: none;
+}

frontend/src/stores/__tests__/canvasStore.test.ts

@@ -26,6 +26,9 @@ describe('canvasStore', () => {
       hasUnsavedChanges: false,
       selectedNodeId: null,
       editingGroupRectId: null,
+      past: [],
+      future: [],
+      clipboard: [],
     })
   })
 
@@ -234,4 +237,95 @@ describe('canvasStore', () => {
     const childIdx = nodes.findIndex((n) => n.id === 'c1')
     expect(parentIdx).toBeLessThan(childIdx)
   })
+
+  // --- History (undo/redo) ---
+
+  it('snapshotHistory pushes current state to past and clears future', () => {
+    const { addNode, snapshotHistory } = useCanvasStore.getState()
+    addNode(makeNode('n1'))
+    snapshotHistory()
+    const { past, future } = useCanvasStore.getState()
+    expect(past).toHaveLength(1)
+    expect(past[0].nodes).toHaveLength(1)
+    expect(future).toHaveLength(0)
+  })
+
+  it('undo restores previous state and moves current to future', () => {
+    const { addNode, snapshotHistory, undo } = useCanvasStore.getState()
+    addNode(makeNode('n1'))
+    snapshotHistory()
+    addNode(makeNode('n2'))
+    undo()
+    const { nodes, past, future } = useCanvasStore.getState()
+    expect(nodes).toHaveLength(1)
+    expect(nodes[0].id).toBe('n1')
+    expect(past).toHaveLength(0)
+    expect(future).toHaveLength(1)
+  })
+
+  it('redo re-applies undone state', () => {
+    const { addNode, snapshotHistory, undo, redo } = useCanvasStore.getState()
+    addNode(makeNode('n1'))
+    snapshotHistory()
+    addNode(makeNode('n2'))
+    undo()
+    redo()
+    const { nodes, future } = useCanvasStore.getState()
+    expect(nodes).toHaveLength(2)
+    expect(future).toHaveLength(0)
+  })
+
+  it('undo does nothing when past is empty', () => {
+    const { addNode, undo } = useCanvasStore.getState()
+    addNode(makeNode('n1'))
+    undo()
+    expect(useCanvasStore.getState().nodes).toHaveLength(1)
+  })
+
+  it('snapshotHistory clears future (new branch)', () => {
+    const { addNode, snapshotHistory, undo } = useCanvasStore.getState()
+    addNode(makeNode('n1'))
+    snapshotHistory()
+    addNode(makeNode('n2'))
+    undo()
+    // now take a new action
+    snapshotHistory()
+    addNode(makeNode('n3'))
+    expect(useCanvasStore.getState().future).toHaveLength(0)
+  })
+
+  // --- Clipboard (copy/paste) ---
+
+  it('copySelectedNodes stores only selected nodes', () => {
+    useCanvasStore.setState({
+      nodes: [
+        { ...makeNode('a'), selected: true },
+        { ...makeNode('b'), selected: false },
+      ],
+      edges: [],
+    })
+    useCanvasStore.getState().copySelectedNodes()
+    const { clipboard } = useCanvasStore.getState()
+    expect(clipboard).toHaveLength(1)
+    expect(clipboard[0].id).toBe('a')
+  })
+
+  it('pasteNodes creates new nodes with new IDs and offset position', () => {
+    const node = { ...makeNode('src'), position: { x: 100, y: 100 }, selected: true }
+    useCanvasStore.setState({ nodes: [node], edges: [], clipboard: [node] })
+    useCanvasStore.getState().pasteNodes()
+    const { nodes } = useCanvasStore.getState()
+    expect(nodes).toHaveLength(2)
+    const pasted = nodes.find((n) => n.id !== 'src')!
+    expect(pasted).toBeDefined()
+    expect(pasted.position.x).toBe(150)
+    expect(pasted.position.y).toBe(150)
+    expect(pasted.selected).toBe(false)
+  })
+
+  it('pasteNodes does nothing when clipboard is empty', () => {
+    useCanvasStore.setState({ nodes: [makeNode('n1')], edges: [], clipboard: [] })
+    useCanvasStore.getState().pasteNodes()
+    expect(useCanvasStore.getState().nodes).toHaveLength(1)
+  })
 })

frontend/src/stores/__tests__/themeStore.test.ts

@@ -0,0 +1,31 @@
+import { describe, it, expect, beforeEach } from 'vitest'
+import { useThemeStore } from '@/stores/themeStore'
+
+describe('themeStore', () => {
+  beforeEach(() => {
+    useThemeStore.setState({ activeTheme: 'default' })
+  })
+
+  it('starts with default theme', () => {
+    expect(useThemeStore.getState().activeTheme).toBe('default')
+  })
+
+  it('setTheme updates activeTheme', () => {
+    useThemeStore.getState().setTheme('matrix')
+    expect(useThemeStore.getState().activeTheme).toBe('matrix')
+  })
+
+  it('setTheme can switch between all presets', () => {
+    const themes = ['default', 'dark', 'light', 'neon', 'matrix'] as const
+    for (const id of themes) {
+      useThemeStore.getState().setTheme(id)
+      expect(useThemeStore.getState().activeTheme).toBe(id)
+    }
+  })
+
+  it('setTheme back to default after neon', () => {
+    useThemeStore.getState().setTheme('neon')
+    useThemeStore.getState().setTheme('default')
+    expect(useThemeStore.getState().activeTheme).toBe('default')
+  })
+})

frontend/src/stores/canvasStore.ts

@@ -11,6 +11,8 @@ import {
 } from '@xyflow/react'
 import type { NodeData, EdgeData } from '@/types'
 
+type HistoryEntry = { nodes: Node<NodeData>[]; edges: Edge<EdgeData>[] }
+
 interface CanvasState {
   nodes: Node<NodeData>[]
   edges: Edge<EdgeData>[]
@@ -18,6 +20,18 @@ interface CanvasState {
   selectedNodeId: string | null
   scanEventTs: number
 
+  // History
+  past: HistoryEntry[]
+  future: HistoryEntry[]
+  snapshotHistory: () => void
+  undo: () => void
+  redo: () => void
+
+  // Clipboard
+  clipboard: Node<NodeData>[]
+  copySelectedNodes: () => void
+  pasteNodes: () => void
+
   onNodesChange: (changes: NodeChange<Node<NodeData>>[]) => void
   onEdgesChange: (changes: EdgeChange<Edge<EdgeData>>[]) => void
   onConnect: (connection: Connection) => void
@@ -32,8 +46,11 @@ interface CanvasState {
   editingGroupRectId: string | null
   setEditingGroupRectId: (id: string | null) => void
   markSaved: () => void
+  markUnsaved: () => void
   loadCanvas: (nodes: Node<NodeData>[], edges: Edge<EdgeData>[]) => void
   notifyScanDeviceFound: () => void
+  hideIp: boolean
+  toggleHideIp: () => void
 }
 
 export const useCanvasStore = create<CanvasState>((set) => ({
@@ -42,8 +59,70 @@ export const useCanvasStore = create<CanvasState>((set) => ({
   hasUnsavedChanges: false,
   selectedNodeId: null,
   editingGroupRectId: null,
+  hideIp: false,
   scanEventTs: 0,
 
+  past: [],
+  future: [],
+  clipboard: [],
+
+  snapshotHistory: () =>
+    set((state) => ({
+      past: [...state.past.slice(-49), { nodes: state.nodes, edges: state.edges }],
+      future: [],
+    })),
+
+  undo: () =>
+    set((state) => {
+      if (state.past.length === 0) return state
+      const previous = state.past[state.past.length - 1]
+      return {
+        nodes: previous.nodes,
+        edges: previous.edges,
+        past: state.past.slice(0, -1),
+        future: [{ nodes: state.nodes, edges: state.edges }, ...state.future.slice(0, 49)],
+        hasUnsavedChanges: true,
+      }
+    }),
+
+  redo: () =>
+    set((state) => {
+      if (state.future.length === 0) return state
+      const next = state.future[0]
+      return {
+        nodes: next.nodes,
+        edges: next.edges,
+        past: [...state.past.slice(-49), { nodes: state.nodes, edges: state.edges }],
+        future: state.future.slice(1),
+        hasUnsavedChanges: true,
+      }
+    }),
+
+  copySelectedNodes: () =>
+    set((state) => ({
+      clipboard: state.nodes.filter((n) => n.selected),
+    })),
+
+  pasteNodes: () =>
+    set((state) => {
+      if (state.clipboard.length === 0) return state
+      const newNodes = state.clipboard.map((n) => ({
+        ...n,
+        id: crypto.randomUUID(),
+        position: { x: n.position.x + 50, y: n.position.y + 50 },
+        selected: false,
+        parentId: undefined,
+        extent: undefined,
+        data: { ...n.data, parent_id: undefined },
+      }))
+      return {
+        nodes: [...state.nodes, ...newNodes],
+        past: [...state.past.slice(-49), { nodes: state.nodes, edges: state.edges }],
+        future: [],
+        hasUnsavedChanges: true,
+      }
+    }),
+
   onNodesChange: (changes) =>
     set((state) => ({
       nodes: applyNodeChanges(changes, state.nodes),
@@ -155,8 +234,12 @@ export const useCanvasStore = create<CanvasState>((set) => ({
 
   markSaved: () => set({ hasUnsavedChanges: false }),
 
+  markUnsaved: () => set({ hasUnsavedChanges: true }),
+
   notifyScanDeviceFound: () => set({ scanEventTs: Date.now() }),
 
+  toggleHideIp: () => set((s) => ({ hideIp: !s.hideIp })),
+
   loadCanvas: (nodes, edges) => {
     // React Flow requires parents before children in the array
     const parents = nodes.filter((n) => !n.parentId)

frontend/src/stores/themeStore.ts

@@ -0,0 +1,12 @@
+import { create } from 'zustand'
+import type { ThemeId } from '@/utils/themes'
+
+interface ThemeState {
+  activeTheme: ThemeId
+  setTheme: (id: ThemeId) => void
+}
+
+export const useThemeStore = create<ThemeState>((set) => ({
+  activeTheme: 'default',
+  setTheme: (id) => set({ activeTheme: id }),
+}))

frontend/src/types/index.ts

@@ -81,6 +81,7 @@ export interface EdgeData extends Record<string, unknown> {
   speed?: string
   custom_color?: string
   path_style?: EdgePathStyle
+  animated?: boolean
 }
 
 export const NODE_TYPE_LABELS: Record<NodeType, string> = {

frontend/src/utils/__tests__/exportMarkdown.test.ts

@@ -0,0 +1,66 @@
+import { describe, it, expect } from 'vitest'
+import { generateMarkdownTable } from '../exportMarkdown'
+import type { Node } from '@xyflow/react'
+import type { NodeData } from '@/types'
+
+const makeNode = (overrides: Partial<NodeData> = {}, id = '1'): Node<NodeData> => ({
+  id,
+  type: overrides.type ?? 'server',
+  position: { x: 0, y: 0 },
+  data: { label: 'Test', type: 'server', status: 'online', services: [], ...overrides },
+})
+
+describe('generateMarkdownTable', () => {
+  it('returns empty string for empty node list', () => {
+    expect(generateMarkdownTable([])).toBe('')
+  })
+
+  it('excludes groupRect nodes', () => {
+    const nodes = [makeNode({ type: 'groupRect', label: 'Zone' })]
+    expect(generateMarkdownTable(nodes)).toBe('')
+  })
+
+  it('generates header + separator + row', () => {
+    const nodes = [makeNode({ label: 'Router', type: 'router', ip: '192.168.1.1', status: 'online' })]
+    const md = generateMarkdownTable(nodes)
+    const lines = md.split('\n')
+    expect(lines[0]).toContain('Label')
+    expect(lines[0]).toContain('IP')
+    expect(lines[1]).toContain('---')
+    expect(lines[2]).toContain('Router')
+    expect(lines[2]).toContain('192.168.1.1')
+  })
+
+  it('uses — for missing fields', () => {
+    const nodes = [makeNode({ label: 'Node', type: 'generic', ip: undefined, hostname: undefined })]
+    const md = generateMarkdownTable(nodes)
+    expect(md).toContain('—')
+  })
+
+  it('lists services as name:port pairs', () => {
+    const nodes = [makeNode({
+      label: 'Server',
+      services: [{ port: 80, protocol: 'tcp', service_name: 'nginx' }, { port: 443, protocol: 'tcp', service_name: 'https' }],
+    })]
+    const md = generateMarkdownTable(nodes)
+    expect(md).toContain('nginx:80')
+    expect(md).toContain('https:443')
+  })
+
+  it('escapes pipe characters in cell values', () => {
+    const nodes = [makeNode({ label: 'A|B' })]
+    const md = generateMarkdownTable(nodes)
+    expect(md).toContain('A\\|B')
+  })
+
+  it('generates one row per non-groupRect node', () => {
+    const nodes = [
+      makeNode({ type: 'server', label: 'A' }, '1'),
+      makeNode({ type: 'router', label: 'B' }, '2'),
+      makeNode({ type: 'groupRect', label: 'Zone' }, '3'),
+    ]
+    const lines = generateMarkdownTable(nodes).split('\n')
+    // header + separator + 2 data rows
+    expect(lines).toHaveLength(4)
+  })
+})

frontend/src/utils/__tests__/layout.test.ts

@@ -0,0 +1,122 @@
+import { describe, it, expect } from 'vitest'
+import { applyDagreLayout } from '../layout'
+import type { Node, Edge } from '@xyflow/react'
+import type { NodeData, EdgeData } from '@/types'
+
+function makeNode(id: string, type: string, parentId?: string): Node<NodeData> {
+  return {
+    id,
+    type,
+    position: { x: 0, y: 0 },
+    data: { type, label: id } as unknown as NodeData,
+    ...(parentId ? { parentId } : {}),
+  }
+}
+
+function makeEdge(source: string, target: string, sourceHandle?: string): Edge<EdgeData> {
+  return { id: `${source}-${target}`, source, target, sourceHandle, data: {} as EdgeData }
+}
+
+describe('applyDagreLayout', () => {
+  it('places two proxmox nodes connected to each other at the same Y', () => {
+    const nodes = [
+      makeNode('router', 'router'),
+      makeNode('pve1', 'proxmox'),
+      makeNode('pve2', 'proxmox'),
+    ]
+    const edges = [
+      makeEdge('router', 'pve1'),
+      makeEdge('router', 'pve2'),
+      makeEdge('pve1', 'pve2'),
+    ]
+
+    const result = applyDagreLayout(nodes, edges)
+    const pve1 = result.find((n) => n.id === 'pve1')!
+    const pve2 = result.find((n) => n.id === 'pve2')!
+
+    expect(pve1.position.y).toBe(pve2.position.y)
+  })
+
+  it('orders peer nodes left-to-right by chain: endpoint first, middle last', () => {
+    // pve-left -- pve-center -- pve-right  (chain)
+    // router connects to all three
+    const nodes = [
+      makeNode('router', 'router'),
+      makeNode('pve-left', 'proxmox'),
+      makeNode('pve-center', 'proxmox'),
+      makeNode('pve-right', 'proxmox'),
+    ]
+    const edges = [
+      makeEdge('router', 'pve-left'),
+      makeEdge('router', 'pve-center'),
+      makeEdge('router', 'pve-right'),
+      makeEdge('pve-left', 'pve-center'),
+      makeEdge('pve-center', 'pve-right'),
+    ]
+
+    const result = applyDagreLayout(nodes, edges)
+    const left = result.find((n) => n.id === 'pve-left')!
+    const center = result.find((n) => n.id === 'pve-center')!
+    const right = result.find((n) => n.id === 'pve-right')!
+
+    // All at same Y
+    expect(left.position.y).toBe(center.position.y)
+    expect(center.position.y).toBe(right.position.y)
+
+    // X order: endpoint (left or right) < center (middle has 2 peer connections)
+    // The BFS starts from an endpoint, so we just verify the middle is not at the extremes
+    const xs = [left.position.x, center.position.x, right.position.x].sort((a, b) => a - b)
+    expect(center.position.x).toBe(xs[1]) // pve-center must be in the middle
+  })
+
+  it('keeps child nodes (parentId set) in place', () => {
+    const nodes = [
+      makeNode('router', 'router'),
+      makeNode('pve1', 'proxmox'),
+      makeNode('vm1', 'vm', 'pve1'),
+    ]
+    const edges = [makeEdge('router', 'pve1')]
+
+    const result = applyDagreLayout(nodes, edges)
+    const vm1 = result.find((n) => n.id === 'vm1')!
+    expect(vm1.position).toEqual({ x: 0, y: 0 })
+  })
+
+  it('places a node below its parent when the edge exits from the top handle (upward edge)', () => {
+    // Frigate connects UP to Proxmox via its top handle (source=Frigate, sourceHandle='top')
+    // Dagre must place Frigate BELOW Proxmox, not above.
+    const nodes = [
+      makeNode('router', 'router'),
+      makeNode('proxmox', 'proxmox'),
+      makeNode('frigate', 'server'),
+    ]
+    const edges = [
+      makeEdge('router', 'proxmox'),
+      makeEdge('frigate', 'proxmox', 'top'), // upward edge: frigate → proxmox via top handle
+    ]
+
+    const result = applyDagreLayout(nodes, edges)
+    const proxmox = result.find((n) => n.id === 'proxmox')!
+    const frigate = result.find((n) => n.id === 'frigate')!
+
+    expect(frigate.position.y).toBeGreaterThan(proxmox.position.y)
+  })
+
+  it('places two switch nodes connected to each other at the same Y', () => {
+    const nodes = [
+      makeNode('router', 'router'),
+      makeNode('sw1', 'switch'),
+      makeNode('sw2', 'switch'),
+    ]
+    const edges = [
+      makeEdge('router', 'sw1'),
+      makeEdge('router', 'sw2'),
+      makeEdge('sw1', 'sw2'),
+    ]
+
+    const result = applyDagreLayout(nodes, edges)
+    const sw1 = result.find((n) => n.id === 'sw1')!
+    const sw2 = result.find((n) => n.id === 'sw2')!
+    expect(sw1.position.y).toBe(sw2.position.y)
+  })
+})

frontend/src/utils/__tests__/maskIp.test.ts

@@ -0,0 +1,19 @@
+import { describe, it, expect } from 'vitest'
+import { maskIp } from '../maskIp'
+
+describe('maskIp', () => {
+  it('masks last two octets of a standard IPv4', () => {
+    expect(maskIp('192.168.1.115')).toBe('192.168.XX.XX')
+  })
+
+  it('masks any IPv4', () => {
+    expect(maskIp('10.0.0.1')).toBe('10.0.XX.XX')
+    expect(maskIp('172.16.254.1')).toBe('172.16.XX.XX')
+  })
+
+  it('passes through non-IPv4 strings unchanged', () => {
+    expect(maskIp('hostname')).toBe('hostname')
+    expect(maskIp('fe80::1')).toBe('fe80::1')
+    expect(maskIp('')).toBe('')
+  })
+})

frontend/src/utils/__tests__/nodeColors.test.ts

@@ -52,4 +52,25 @@ describe('resolveNodeColors', () => {
     const result = resolveNodeColors({ type: 'unknown' as any, custom_colors: undefined })
     expect(result).toEqual(NODE_DEFAULT_COLORS.generic)
   })
+
+  it('uses theme colors when themeId is provided', () => {
+    const result = resolveNodeColors(makeData({ type: 'server' }), 'matrix')
+    expect(result.border).not.toBe(NODE_DEFAULT_COLORS.server.border)
+    expect(result.border).toBe('#008822') // matrix server accent
+  })
+
+  it('custom_colors override theme colors', () => {
+    const custom = { border: '#ff0000' }
+    const result = resolveNodeColors(makeData({ type: 'server', custom_colors: custom }), 'neon')
+    expect(result.border).toBe('#ff0000')
+    // background should come from neon theme, not default
+    expect(result.background).not.toBe(NODE_DEFAULT_COLORS.server.background)
+  })
+
+  it('groupRect always has transparent background regardless of theme', () => {
+    for (const themeId of ['default', 'light', 'matrix', 'neon', 'dark'] as const) {
+      const result = resolveNodeColors(makeData({ type: 'groupRect' }), themeId)
+      expect(result.background).toBe('transparent')
+    }
+  })
 })

frontend/src/utils/__tests__/themes.test.ts

@@ -0,0 +1,111 @@
+import { describe, it, expect } from 'vitest'
+import { THEMES, THEME_ORDER, type ThemeId } from '../themes'
+import type { NodeType, EdgeType, NodeStatus } from '@/types'
+
+const NODE_TYPES: NodeType[] = [
+  'isp', 'router', 'switch', 'server', 'proxmox', 'vm', 'lxc',
+  'nas', 'iot', 'ap', 'camera', 'printer', 'computer', 'cpl', 'generic', 'groupRect',
+]
+const EDGE_TYPES: EdgeType[] = ['ethernet', 'wifi', 'iot', 'vlan', 'virtual', 'cluster']
+const STATUS_TYPES: NodeStatus[] = ['online', 'offline', 'pending', 'unknown']
+
+describe('THEME_ORDER', () => {
+  it('contains all theme IDs', () => {
+    const keys = Object.keys(THEMES) as ThemeId[]
+    expect(THEME_ORDER).toHaveLength(keys.length)
+    expect(new Set(THEME_ORDER)).toEqual(new Set(keys))
+  })
+})
+
+describe('THEMES', () => {
+  for (const themeId of Object.keys(THEMES) as ThemeId[]) {
+    describe(`theme: ${themeId}`, () => {
+      const preset = THEMES[themeId]
+
+      it('has id, label, description', () => {
+        expect(preset.id).toBe(themeId)
+        expect(typeof preset.label).toBe('string')
+        expect(preset.label.length).toBeGreaterThan(0)
+        expect(typeof preset.description).toBe('string')
+      })
+
+      it('has nodeAccents for all node types', () => {
+        for (const type of NODE_TYPES) {
+          expect(preset.colors.nodeAccents[type]).toBeDefined()
+          expect(typeof preset.colors.nodeAccents[type].border).toBe('string')
+          expect(typeof preset.colors.nodeAccents[type].icon).toBe('string')
+        }
+      })
+
+      it('has surface colors', () => {
+        expect(typeof preset.colors.nodeCardBackground).toBe('string')
+        expect(typeof preset.colors.nodeIconBackground).toBe('string')
+        expect(typeof preset.colors.nodeLabelColor).toBe('string')
+        expect(typeof preset.colors.nodeSubtextColor).toBe('string')
+      })
+
+      it('has statusColors for all statuses', () => {
+        for (const status of STATUS_TYPES) {
+          expect(typeof preset.colors.statusColors[status]).toBe('string')
+        }
+      })
+
+      it('has edgeColors for all edge types', () => {
+        for (const type of EDGE_TYPES) {
+          expect(typeof preset.colors.edgeColors[type]).toBe('string')
+        }
+      })
+
+      it('has edge label colors', () => {
+        expect(typeof preset.colors.edgeSelectedColor).toBe('string')
+        expect(typeof preset.colors.edgeLabelBackground).toBe('string')
+        expect(typeof preset.colors.edgeLabelColor).toBe('string')
+        expect(typeof preset.colors.edgeLabelBorder).toBe('string')
+      })
+
+      it('has canvas colors', () => {
+        expect(typeof preset.colors.canvasBackground).toBe('string')
+        expect(typeof preset.colors.canvasDotColor).toBe('string')
+      })
+
+      it('has handle colors', () => {
+        expect(typeof preset.colors.handleBackground).toBe('string')
+        expect(typeof preset.colors.handleBorder).toBe('string')
+      })
+
+      it('has valid reactFlowColorMode', () => {
+        expect(['dark', 'light']).toContain(preset.colors.reactFlowColorMode)
+      })
+    })
+  }
+
+  it('default theme matches original hardcoded colors', () => {
+    const d = THEMES.default.colors
+    expect(d.nodeAccents.server.border).toBe('#a855f7')
+    expect(d.nodeAccents.isp.border).toBe('#00d4ff')
+    expect(d.nodeAccents.proxmox.border).toBe('#ff6e00')
+    expect(d.nodeCardBackground).toBe('#21262d')
+    expect(d.nodeIconBackground).toBe('#161b22')
+    expect(d.canvasBackground).toBe('#0d1117')
+    expect(d.canvasDotColor).toBe('#30363d')
+    expect(d.edgeColors.ethernet).toBe('#30363d')
+    expect(d.edgeColors.wifi).toBe('#00d4ff')
+    expect(d.statusColors.online).toBe('#39d353')
+    expect(d.statusColors.offline).toBe('#f85149')
+  })
+
+  it('light theme has reactFlowColorMode light', () => {
+    expect(THEMES.light.colors.reactFlowColorMode).toBe('light')
+  })
+
+  it('light theme has light canvas background', () => {
+    expect(THEMES.light.colors.canvasBackground).toBe('#f6f8fa')
+  })
+
+  it('matrix theme uses green accents', () => {
+    const m = THEMES.matrix.colors
+    expect(m.nodeAccents.isp.border).toMatch(/^#0/)
+    expect(m.nodeLabelColor).toBe('#00ff41')
+    expect(m.canvasBackground).toBe('#000000')
+  })
+})

frontend/src/utils/exportMarkdown.ts

@@ -0,0 +1,42 @@
+import type { Node } from '@xyflow/react'
+import type { NodeData } from '@/types'
+
+const EMPTY = '—'
+
+function cell(v: string | null | undefined): string {
+  if (!v) return EMPTY
+  // Escape pipe chars so they don't break the table
+  return v.replace(/\|/g, '\\|')
+}
+
+export function generateMarkdownTable(nodes: Node<NodeData>[]): string {
+  const rows = nodes
+    .filter((n) => n.data.type !== 'groupRect')
+    .map((n) => {
+      const d = n.data
+      const services = d.services?.length
+        ? d.services.map((s) => `${s.service_name}:${s.port}`).join(', ')
+        : EMPTY
+      return [
+        cell(d.label),
+        cell(d.type),
+        cell(d.ip),
+        cell(d.hostname),
+        cell(d.status),
+        services,
+      ]
+    })
+
+  if (rows.length === 0) return ''
+
+  const headers = ['Label', 'Type', 'IP', 'Hostname', 'Status', 'Services']
+  const separator = headers.map(() => '---')
+
+  const lines = [
+    `| ${headers.join(' | ')} |`,
+    `| ${separator.join(' | ')} |`,
+    ...rows.map((r) => `| ${r.join(' | ')} |`),
+  ]
+
+  return lines.join('\n')
+}

frontend/src/utils/layout.ts

@@ -5,46 +5,149 @@ import type { NodeData, EdgeData } from '@/types'
 const NODE_WIDTH = 180
 const NODE_HEIGHT = 52
 
+const PEER_TYPES = new Set(['proxmox', 'switch'])
+
+/**
+ * Find groups of peer nodes (same type, directly connected to each other)
+ * using union-find. Returns a map: nodeId → groupId (the minimum nodeId in the group).
+ */
+function buildPeerGroups(
+  topLevel: Node<NodeData>[],
+  edges: Edge<EdgeData>[],
+): Map<string, string> {
+  const parent = new Map<string, string>(topLevel.map((n) => [n.id, n.id]))
+
+  function find(id: string): string {
+    if (parent.get(id) !== id) parent.set(id, find(parent.get(id)!))
+    return parent.get(id)!
+  }
+  function union(a: string, b: string) {
+    const ra = find(a), rb = find(b)
+    if (ra !== rb) parent.set(ra, rb)
+  }
+
+  const topLevelIds = new Set(topLevel.map((n) => n.id))
+  const peerIds = new Set(topLevel.filter((n) => PEER_TYPES.has(n.type ?? '')).map((n) => n.id))
+
+  for (const edge of edges) {
+    const { source: s, target: t } = edge
+    if (topLevelIds.has(s) && topLevelIds.has(t) && peerIds.has(s) && peerIds.has(t)) {
+      // Only merge if both nodes share the same type (proxmox↔proxmox, switch↔switch)
+      const srcNode = topLevel.find((n) => n.id === s)!
+      const tgtNode = topLevel.find((n) => n.id === t)!
+      if (srcNode.type === tgtNode.type) union(s, t)
+    }
+  }
+
+  // Resolve all to canonical group ids
+  const result = new Map<string, string>()
+  for (const n of topLevel) result.set(n.id, find(n.id))
+  return result
+}
+
 /**
  * Apply Dagre hierarchical (top-to-bottom) layout to nodes and edges.
  * Child nodes (parentId set) keep their relative position inside the parent — only
  * top-level nodes are repositioned by Dagre.
+ *
+ * Post-pass: peer nodes of the same type (proxmox, switch) connected to each other
+ * are snapped to the same Y rank so they appear on the same horizontal level.
  */
 export function applyDagreLayout(
   nodes: Node<NodeData>[],
   edges: Edge<EdgeData>[],
 ): Node<NodeData>[] {
+  const topLevel = nodes.filter((n) => !n.parentId)
+  const topLevelIds = new Set(topLevel.map((n) => n.id))
+
+  // Capture original X positions before Dagre — used to preserve left-to-right
+  // ordering of peer groups as the user set them.
+  const originalX = new Map<string, number>(topLevel.map((n) => [n.id, n.position.x]))
+
+  // Identify peer groups before running Dagre so we can exclude peer edges
+  const peerGroups = buildPeerGroups(topLevel, edges)
+  const isPeerEdge = (e: Edge<EdgeData>) => {
+    const sg = peerGroups.get(e.source)
+    const tg = peerGroups.get(e.target)
+    return sg !== undefined && tg !== undefined && sg === tg
+  }
+
   const g = new dagre.graphlib.Graph()
   g.setDefaultEdgeLabel(() => ({}))
   g.setGraph({ rankdir: 'TB', nodesep: 60, ranksep: 80 })
 
-  const topLevel = nodes.filter((n) => !n.parentId)
-
   for (const node of topLevel) {
     const w = node.type === 'proxmox' ? (node.width ?? 300) : NODE_WIDTH
     const h = node.type === 'proxmox' ? (node.height ?? 200) : NODE_HEIGHT
     g.setNode(node.id, { width: w, height: h })
   }
   for (const edge of edges) {
-    // Only add edges between top-level nodes
-    const srcTop = topLevel.some((n) => n.id === edge.source)
-    const tgtTop = topLevel.some((n) => n.id === edge.target)
-    if (srcTop && tgtTop) g.setEdge(edge.source, edge.target)
+    const srcTop = topLevelIds.has(edge.source)
+    const tgtTop = topLevelIds.has(edge.target)
+    // Exclude peer-to-peer edges — they confuse Dagre's rank assignment
+    if (!srcTop || !tgtTop || isPeerEdge(edge)) continue
+    // If the edge exits from the TOP handle of the source, the connection goes
+    // upward — meaning the source node is visually below the target. Reverse
+    // the edge direction for Dagre so it places the source below the target.
+    const upward = (edge as { sourceHandle?: string | null }).sourceHandle === 'top'
+    if (upward) {
+      g.setEdge(edge.target, edge.source)
+    } else {
+      g.setEdge(edge.source, edge.target)
+    }
   }
 
   dagre.layout(g)
 
-  return nodes.map((node) => {
-    if (node.parentId) return node // keep children in place
+  // Build initial positions from Dagre
+  const positions = new Map<string, { x: number; y: number; w: number; h: number }>()
+  for (const node of topLevel) {
     const pos = g.node(node.id)
     const w = node.type === 'proxmox' ? (node.width ?? 300) : NODE_WIDTH
     const h = node.type === 'proxmox' ? (node.height ?? 200) : NODE_HEIGHT
-    return {
-      ...node,
-      position: {
-        x: pos.x - w / 2,
-        y: pos.y - h / 2,
-      },
+    positions.set(node.id, { x: pos.x - w / 2, y: pos.y - h / 2, w, h })
+  }
+
+  // Post-pass: fix peer groups (same-type nodes directly connected to each other)
+  // Collect members per group
+  const groupMembers = new Map<string, string[]>()
+  for (const [id, groupId] of peerGroups) {
+    if (!groupMembers.has(groupId)) groupMembers.set(groupId, [])
+    groupMembers.get(groupId)!.push(id)
+  }
+
+  for (const [, members] of groupMembers) {
+    if (members.length < 2) continue
+
+    // --- Y: snap all to average Y of the group ---
+    const avgY = members.reduce((sum, id) => sum + positions.get(id)!.y, 0) / members.length
+    for (const id of members) positions.set(id, { ...positions.get(id)!, y: avgY })
+
+    // --- X: sort by original (pre-layout) X to preserve the user's intended
+    //         left-to-right order. Fall back to Dagre X if all nodes share the
+    //         same original X (e.g. freshly created canvas with no positions yet). ---
+    const GAP = 60
+    const origXs = members.map((id) => originalX.get(id) ?? 0)
+    const allSameOrigX = origXs.every((x) => x === origXs[0])
+    const ordered = members.slice().sort((a, b) =>
+      allSameOrigX
+        ? positions.get(a)!.x - positions.get(b)!.x   // fall back to Dagre X
+        : (originalX.get(a) ?? 0) - (originalX.get(b) ?? 0), // preserve user order
+    )
+    const totalWidth = ordered.reduce((sum, id) => sum + positions.get(id)!.w, 0) + GAP * (ordered.length - 1)
+    const centerX = members.reduce((sum, id) => sum + positions.get(id)!.x + positions.get(id)!.w / 2, 0) / members.length
+
+    let curX = centerX - totalWidth / 2
+    for (const id of ordered) {
+      const p = positions.get(id)!
+      positions.set(id, { ...p, x: curX })
+      curX += p.w + GAP
     }
+  }
+
+  return nodes.map((node) => {
+    if (node.parentId) return node
+    const p = positions.get(node.id)!
+    return { ...node, position: { x: p.x, y: p.y } }
   })
 }

frontend/src/utils/maskIp.ts

@@ -0,0 +1,10 @@
+/**
+ * Mask the last two octets of an IPv4 address.
+ * e.g. "192.168.1.115" → "192.168.XX.XX"
+ * Non-IPv4 strings are returned unchanged.
+ */
+export function maskIp(ip: string): string {
+  const parts = ip.split('.')
+  if (parts.length === 4) return `${parts[0]}.${parts[1]}.XX.XX`
+  return ip
+}

frontend/src/utils/nodeColors.ts

@@ -1,4 +1,5 @@
 import type { NodeData, NodeType } from '@/types'
+import { THEMES, type ThemeId } from './themes'
 
 export interface NodeColors {
   border: string
@@ -6,26 +7,31 @@ export interface NodeColors {
   icon: string
 }
 
-export const NODE_DEFAULT_COLORS: Record<NodeType, NodeColors> = {
-  isp:     { border: '#00d4ff', background: '#21262d', icon: '#00d4ff' },
-  router:  { border: '#00d4ff', background: '#21262d', icon: '#00d4ff' },
-  switch:  { border: '#39d353', background: '#21262d', icon: '#39d353' },
-  server:  { border: '#a855f7', background: '#21262d', icon: '#a855f7' },
-  proxmox: { border: '#ff6e00', background: '#21262d', icon: '#ff6e00' },
-  vm:      { border: '#a855f7', background: '#21262d', icon: '#a855f7' },
-  lxc:     { border: '#00d4ff', background: '#21262d', icon: '#00d4ff' },
-  nas:     { border: '#39d353', background: '#21262d', icon: '#39d353' },
-  iot:      { border: '#e3b341', background: '#21262d', icon: '#e3b341' },
-  ap:       { border: '#00d4ff', background: '#21262d', icon: '#00d4ff' },
-  camera:   { border: '#8b949e', background: '#21262d', icon: '#8b949e' },
-  printer:  { border: '#8b949e', background: '#21262d', icon: '#8b949e' },
-  computer: { border: '#a855f7', background: '#21262d', icon: '#a855f7' },
-  cpl:      { border: '#e3b341', background: '#21262d', icon: '#e3b341' },
-  generic:  { border: '#8b949e', background: '#21262d', icon: '#8b949e' },
-}
+// Derived from the default theme — kept for backward compatibility and tests
+export const NODE_DEFAULT_COLORS: Record<NodeType, NodeColors> = Object.fromEntries(
+  (Object.entries(THEMES.default.colors.nodeAccents) as [NodeType, { border: string; icon: string }][]).map(
+    ([type, accent]) => [
+      type,
+      {
+        border:     accent.border,
+        background: type === 'groupRect' ? 'transparent' : THEMES.default.colors.nodeCardBackground,
+        icon:       accent.icon,
+      },
+    ]
+  )
+) as Record<NodeType, NodeColors>
 
-export function resolveNodeColors(data: Pick<NodeData, 'type' | 'custom_colors'>): NodeColors {
-  const defaults = NODE_DEFAULT_COLORS[data.type] ?? NODE_DEFAULT_COLORS.generic
+export function resolveNodeColors(
+  data: Pick<NodeData, 'type' | 'custom_colors'>,
+  themeId: ThemeId = 'default',
+): NodeColors {
+  const theme = THEMES[themeId] ?? THEMES.default
+  const accent = theme.colors.nodeAccents[data.type] ?? theme.colors.nodeAccents.generic
+  const defaults: NodeColors = {
+    border:     accent.border,
+    background: data.type === 'groupRect' ? 'transparent' : theme.colors.nodeCardBackground,
+    icon:       accent.icon,
+  }
   const custom = data.custom_colors
   return {
     border:     custom?.border     ?? defaults.border,

frontend/src/utils/themes.ts

@@ -0,0 +1,306 @@
+import type { NodeType, EdgeType, NodeStatus } from '@/types'
+
+export type ThemeId = 'default' | 'dark' | 'light' | 'neon' | 'matrix'
+
+export interface ThemeColors {
+  // Per node-type accent (border + icon)
+  nodeAccents: Record<NodeType, { border: string; icon: string }>
+  // Node surfaces
+  nodeCardBackground: string
+  nodeIconBackground: string
+  nodeLabelColor: string
+  nodeSubtextColor: string
+  // Status indicator dots
+  statusColors: Record<NodeStatus, string>
+  // Edges
+  edgeColors: Record<EdgeType, string>
+  edgeSelectedColor: string
+  edgeLabelBackground: string
+  edgeLabelColor: string
+  edgeLabelBorder: string
+  // Canvas
+  canvasBackground: string
+  canvasDotColor: string
+  // React Flow handles
+  handleBackground: string
+  handleBorder: string
+  // React Flow colorMode for built-in controls
+  reactFlowColorMode: 'dark' | 'light'
+}
+
+export interface ThemePreset {
+  id: ThemeId
+  label: string
+  description: string
+  colors: ThemeColors
+}
+
+export const THEMES: Record<ThemeId, ThemePreset> = {
+  default: {
+    id: 'default',
+    label: 'Default',
+    description: 'Dark futuristic — the original Homelable look',
+    colors: {
+      nodeAccents: {
+        isp:      { border: '#00d4ff', icon: '#00d4ff' },
+        router:   { border: '#00d4ff', icon: '#00d4ff' },
+        switch:   { border: '#39d353', icon: '#39d353' },
+        server:   { border: '#a855f7', icon: '#a855f7' },
+        proxmox:  { border: '#ff6e00', icon: '#ff6e00' },
+        vm:       { border: '#a855f7', icon: '#a855f7' },
+        lxc:      { border: '#00d4ff', icon: '#00d4ff' },
+        nas:      { border: '#39d353', icon: '#39d353' },
+        iot:      { border: '#e3b341', icon: '#e3b341' },
+        ap:       { border: '#00d4ff', icon: '#00d4ff' },
+        camera:   { border: '#8b949e', icon: '#8b949e' },
+        printer:  { border: '#8b949e', icon: '#8b949e' },
+        computer: { border: '#a855f7', icon: '#a855f7' },
+        cpl:      { border: '#e3b341', icon: '#e3b341' },
+        generic:  { border: '#8b949e', icon: '#8b949e' },
+        groupRect:{ border: '#00d4ff', icon: '#00d4ff' },
+      },
+      nodeCardBackground: '#21262d',
+      nodeIconBackground: '#161b22',
+      nodeLabelColor: '#e6edf3',
+      nodeSubtextColor: '#8b949e',
+      statusColors: {
+        online:  '#39d353',
+        offline: '#f85149',
+        pending: '#e3b341',
+        unknown: '#8b949e',
+      },
+      edgeColors: {
+        ethernet: '#30363d',
+        wifi:     '#00d4ff',
+        iot:      '#e3b341',
+        vlan:     '#00d4ff',
+        virtual:  '#8b949e',
+        cluster:  '#ff6e00',
+      },
+      edgeSelectedColor:  '#00d4ff',
+      edgeLabelBackground:'#161b22',
+      edgeLabelColor:     '#8b949e',
+      edgeLabelBorder:    '#30363d',
+      canvasBackground:   '#0d1117',
+      canvasDotColor:     '#30363d',
+      handleBackground:   '#30363d',
+      handleBorder:       '#8b949e',
+      reactFlowColorMode: 'dark',
+    },
+  },
+
+  dark: {
+    id: 'dark',
+    label: 'Dark',
+    description: 'Pure black with maximum contrast',
+    colors: {
+      nodeAccents: {
+        isp:      { border: '#22d3ee', icon: '#22d3ee' },
+        router:   { border: '#22d3ee', icon: '#22d3ee' },
+        switch:   { border: '#4ade80', icon: '#4ade80' },
+        server:   { border: '#c084fc', icon: '#c084fc' },
+        proxmox:  { border: '#fb923c', icon: '#fb923c' },
+        vm:       { border: '#c084fc', icon: '#c084fc' },
+        lxc:      { border: '#22d3ee', icon: '#22d3ee' },
+        nas:      { border: '#4ade80', icon: '#4ade80' },
+        iot:      { border: '#fbbf24', icon: '#fbbf24' },
+        ap:       { border: '#22d3ee', icon: '#22d3ee' },
+        camera:   { border: '#94a3b8', icon: '#94a3b8' },
+        printer:  { border: '#94a3b8', icon: '#94a3b8' },
+        computer: { border: '#c084fc', icon: '#c084fc' },
+        cpl:      { border: '#fbbf24', icon: '#fbbf24' },
+        generic:  { border: '#94a3b8', icon: '#94a3b8' },
+        groupRect:{ border: '#22d3ee', icon: '#22d3ee' },
+      },
+      nodeCardBackground: '#0a0a0a',
+      nodeIconBackground: '#111111',
+      nodeLabelColor:     '#ffffff',
+      nodeSubtextColor:   '#666666',
+      statusColors: {
+        online:  '#4ade80',
+        offline: '#ef4444',
+        pending: '#fbbf24',
+        unknown: '#6b7280',
+      },
+      edgeColors: {
+        ethernet: '#1c1c1e',
+        wifi:     '#22d3ee',
+        iot:      '#fbbf24',
+        vlan:     '#22d3ee',
+        virtual:  '#6b7280',
+        cluster:  '#fb923c',
+      },
+      edgeSelectedColor:  '#22d3ee',
+      edgeLabelBackground:'#111111',
+      edgeLabelColor:     '#666666',
+      edgeLabelBorder:    '#1c1c1e',
+      canvasBackground:   '#000000',
+      canvasDotColor:     '#1a1a1a',
+      handleBackground:   '#1c1c1e',
+      handleBorder:       '#444444',
+      reactFlowColorMode: 'dark',
+    },
+  },
+
+  light: {
+    id: 'light',
+    label: 'Light',
+    description: 'Clean light theme with dark text',
+    colors: {
+      nodeAccents: {
+        isp:      { border: '#0284c7', icon: '#0284c7' },
+        router:   { border: '#0284c7', icon: '#0284c7' },
+        switch:   { border: '#16a34a', icon: '#16a34a' },
+        server:   { border: '#7c3aed', icon: '#7c3aed' },
+        proxmox:  { border: '#ea580c', icon: '#ea580c' },
+        vm:       { border: '#7c3aed', icon: '#7c3aed' },
+        lxc:      { border: '#0284c7', icon: '#0284c7' },
+        nas:      { border: '#16a34a', icon: '#16a34a' },
+        iot:      { border: '#b45309', icon: '#b45309' },
+        ap:       { border: '#0284c7', icon: '#0284c7' },
+        camera:   { border: '#6b7280', icon: '#6b7280' },
+        printer:  { border: '#6b7280', icon: '#6b7280' },
+        computer: { border: '#7c3aed', icon: '#7c3aed' },
+        cpl:      { border: '#b45309', icon: '#b45309' },
+        generic:  { border: '#6b7280', icon: '#6b7280' },
+        groupRect:{ border: '#0284c7', icon: '#0284c7' },
+      },
+      nodeCardBackground: '#ffffff',
+      nodeIconBackground: '#f0f6ff',
+      nodeLabelColor:     '#1f2328',
+      nodeSubtextColor:   '#57606a',
+      statusColors: {
+        online:  '#16a34a',
+        offline: '#dc2626',
+        pending: '#d97706',
+        unknown: '#6b7280',
+      },
+      edgeColors: {
+        ethernet: '#d0d7de',
+        wifi:     '#0284c7',
+        iot:      '#d97706',
+        vlan:     '#0284c7',
+        virtual:  '#9ca3af',
+        cluster:  '#ea580c',
+      },
+      edgeSelectedColor:  '#0284c7',
+      edgeLabelBackground:'#ffffff',
+      edgeLabelColor:     '#57606a',
+      edgeLabelBorder:    '#d0d7de',
+      canvasBackground:   '#f6f8fa',
+      canvasDotColor:     '#d0d7de',
+      handleBackground:   '#d0d7de',
+      handleBorder:       '#9ca3af',
+      reactFlowColorMode: 'light',
+    },
+  },
+
+  neon: {
+    id: 'neon',
+    label: 'Neon',
+    description: 'Cyberpunk vibes with vivid glowing accents',
+    colors: {
+      nodeAccents: {
+        isp:      { border: '#00ffff', icon: '#00ffff' },
+        router:   { border: '#00ffff', icon: '#00ffff' },
+        switch:   { border: '#00ff80', icon: '#00ff80' },
+        server:   { border: '#ff00ff', icon: '#ff00ff' },
+        proxmox:  { border: '#ff8800', icon: '#ff8800' },
+        vm:       { border: '#ff00ff', icon: '#ff00ff' },
+        lxc:      { border: '#00ffff', icon: '#00ffff' },
+        nas:      { border: '#00ff80', icon: '#00ff80' },
+        iot:      { border: '#ffff00', icon: '#ffff00' },
+        ap:       { border: '#00ffff', icon: '#00ffff' },
+        camera:   { border: '#8888ff', icon: '#8888ff' },
+        printer:  { border: '#8888ff', icon: '#8888ff' },
+        computer: { border: '#ff00ff', icon: '#ff00ff' },
+        cpl:      { border: '#ffff00', icon: '#ffff00' },
+        generic:  { border: '#8888ff', icon: '#8888ff' },
+        groupRect:{ border: '#00ffff', icon: '#00ffff' },
+      },
+      nodeCardBackground: '#0f0f2a',
+      nodeIconBackground: '#0a0a1a',
+      nodeLabelColor:     '#ffffff',
+      nodeSubtextColor:   '#8888cc',
+      statusColors: {
+        online:  '#00ff80',
+        offline: '#ff0040',
+        pending: '#ffff00',
+        unknown: '#8888cc',
+      },
+      edgeColors: {
+        ethernet: '#1a1a3a',
+        wifi:     '#00ffff',
+        iot:      '#ffff00',
+        vlan:     '#00ffff',
+        virtual:  '#8888cc',
+        cluster:  '#ff8800',
+      },
+      edgeSelectedColor:  '#00ffff',
+      edgeLabelBackground:'#0a0a1a',
+      edgeLabelColor:     '#8888cc',
+      edgeLabelBorder:    '#1a1a3a',
+      canvasBackground:   '#05050f',
+      canvasDotColor:     '#1a1a3a',
+      handleBackground:   '#1a1a3a',
+      handleBorder:       '#8888cc',
+      reactFlowColorMode: 'dark',
+    },
+  },
+
+  matrix: {
+    id: 'matrix',
+    label: 'Matrix',
+    description: 'Everything in terminal green',
+    colors: {
+      nodeAccents: {
+        isp:      { border: '#00ff41', icon: '#00ff41' },
+        router:   { border: '#00ff41', icon: '#00ff41' },
+        switch:   { border: '#00cc33', icon: '#00cc33' },
+        server:   { border: '#008822', icon: '#008822' },
+        proxmox:  { border: '#33ff66', icon: '#33ff66' },
+        vm:       { border: '#008822', icon: '#008822' },
+        lxc:      { border: '#00ff41', icon: '#00ff41' },
+        nas:      { border: '#00cc33', icon: '#00cc33' },
+        iot:      { border: '#66ff33', icon: '#66ff33' },
+        ap:       { border: '#00ff41', icon: '#00ff41' },
+        camera:   { border: '#005500', icon: '#005500' },
+        printer:  { border: '#005500', icon: '#005500' },
+        computer: { border: '#008822', icon: '#008822' },
+        cpl:      { border: '#66ff33', icon: '#66ff33' },
+        generic:  { border: '#006600', icon: '#006600' },
+        groupRect:{ border: '#00ff41', icon: '#00ff41' },
+      },
+      nodeCardBackground: '#001100',
+      nodeIconBackground: '#002200',
+      nodeLabelColor:     '#00ff41',
+      nodeSubtextColor:   '#006600',
+      statusColors: {
+        online:  '#00ff41',
+        offline: '#ff0000',
+        pending: '#88ff00',
+        unknown: '#004400',
+      },
+      edgeColors: {
+        ethernet: '#003300',
+        wifi:     '#00ff41',
+        iot:      '#66ff33',
+        vlan:     '#00cc33',
+        virtual:  '#004400',
+        cluster:  '#33ff66',
+      },
+      edgeSelectedColor:  '#00ff41',
+      edgeLabelBackground:'#001100',
+      edgeLabelColor:     '#006600',
+      edgeLabelBorder:    '#003300',
+      canvasBackground:   '#000000',
+      canvasDotColor:     '#002200',
+      handleBackground:   '#003300',
+      handleBorder:       '#006600',
+      reactFlowColorMode: 'dark',
+    },
+  },
+}
+
+// Ordered list for display in the modal
+export const THEME_ORDER: ThemeId[] = ['default', 'dark', 'light', 'neon', 'matrix']

mcp/.env.example

@@ -0,0 +1,12 @@
+# MCP Server — copy to .env and fill in values
+
+# Authenticates AI clients (Claude Code, Claude Desktop, etc.) → MCP server
+# Generate: python3 -c "import secrets; print('mcp_sk_' + secrets.token_hex(24))"
+MCP_API_KEY=mcp_sk_changeme
+
+# Authenticates MCP server → backend (must match MCP_SERVICE_KEY in backend .env)
+# Generate: python3 -c "import secrets; print('svc_' + secrets.token_hex(24))"
+MCP_SERVICE_KEY=svc_changeme
+
+# Backend URL — use http://backend:8000 in Docker, http://localhost:8000 for local dev
+BACKEND_URL=http://localhost:8000

mcp/Dockerfile.mcp

@@ -0,0 +1,10 @@
+FROM python:3.13-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY app/ ./app/
+
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8001"]

mcp/app/auth.py

@@ -0,0 +1,44 @@
+import hmac
+import json
+from starlette.types import ASGIApp, Receive, Scope, Send
+
+from .config import settings
+
+_BYPASS_PATHS = {"/health", "/register"}
+
+
+class ApiKeyMiddleware:
+    """Pure ASGI middleware — compatible with SSE/streaming responses.
+
+    BaseHTTPMiddleware buffers the full response body and breaks SSE streams.
+    This implementation operates at the ASGI scope level and never touches
+    the response stream.
+    """
+
+    def __init__(self, app: ASGIApp) -> None:
+        self.app = app
+
+    async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
+        if scope["type"] != "http":
+            await self.app(scope, receive, send)
+            return
+
+        path: str = scope.get("path", "")
+
+        if path in _BYPASS_PATHS or path.startswith("/.well-known/"):
+            await self.app(scope, receive, send)
+            return
+
+        headers = dict(scope.get("headers", []))
+        key = headers.get(b"x-api-key", b"").decode()
+        expected = settings.mcp_api_key
+
+        if not key or not hmac.compare_digest(key.encode(), expected.encode()):
+            body = json.dumps({"detail": "Invalid or missing X-API-Key"}).encode()
+            await send({"type": "http.response.start", "status": 401,
+                        "headers": [(b"content-type", b"application/json"),
+                                    (b"content-length", str(len(body)).encode())]})
+            await send({"type": "http.response.body", "body": body, "more_body": False})
+            return
+
+        await self.app(scope, receive, send)

mcp/app/backend_client.py

@@ -0,0 +1,40 @@
+import httpx
+from .config import settings
+
+
+class BackendClient:
+    def __init__(self):
+        self._client: httpx.AsyncClient | None = None
+
+    async def start(self):
+        self._client = httpx.AsyncClient(
+            base_url=settings.backend_url,
+            headers={"X-MCP-Service-Key": settings.mcp_service_key},
+            timeout=30.0,
+        )
+
+    async def stop(self):
+        if self._client:
+            await self._client.aclose()
+
+    async def request(self, method: str, path: str, **kwargs) -> dict:
+        resp = await self._client.request(method, path, **kwargs)
+        resp.raise_for_status()
+        if resp.status_code == 204:
+            return {}
+        return resp.json()
+
+    async def get(self, path: str) -> dict | list:
+        return await self.request("GET", path)
+
+    async def post(self, path: str, body: dict) -> dict:
+        return await self.request("POST", path, json=body)
+
+    async def patch(self, path: str, body: dict) -> dict:
+        return await self.request("PATCH", path, json=body)
+
+    async def delete(self, path: str) -> dict:
+        return await self.request("DELETE", path)
+
+
+backend = BackendClient()

mcp/app/config.py

@@ -0,0 +1,12 @@
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    mcp_api_key: str = "mcp_sk_changeme"       # AI client → MCP server
+    mcp_service_key: str = "svc_changeme"       # MCP server → backend
+    backend_url: str = "http://backend:8000"
+
+    model_config = {"env_file": ".env", "extra": "ignore"}
+
+
+settings = Settings()

mcp/app/main.py

@@ -0,0 +1,42 @@
+from contextlib import asynccontextmanager
+from fastapi import FastAPI, Request
+from mcp.server import Server
+from mcp.server.streamable_http_manager import StreamableHTTPSessionManager
+
+from .auth import ApiKeyMiddleware
+from .backend_client import backend
+from .resources import register_resources
+from .tools import register_tools
+
+
+mcp_server = Server("homelable")
+register_resources(mcp_server)
+register_tools(mcp_server)
+
+session_manager = StreamableHTTPSessionManager(
+    app=mcp_server,
+    json_response=False,
+    stateless=True,
+)
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    await backend.start()
+    async with session_manager.run():
+        yield
+    await backend.stop()
+
+
+app = FastAPI(title="Homelable MCP", lifespan=lifespan)
+app.add_middleware(ApiKeyMiddleware)
+
+
+@app.api_route("/mcp", methods=["GET", "POST", "DELETE"])
+async def mcp_endpoint(request: Request):
+    await session_manager.handle_request(request.scope, request.receive, request._send)
+
+
+@app.get("/health")
+async def health():
+    return {"status": "ok"}

mcp/app/resources.py

@@ -0,0 +1,43 @@
+import json
+from mcp.server import Server
+from mcp.types import Resource, TextContent
+from .backend_client import backend
+
+RESOURCE_LIST = [
+    Resource(uri="homelable://canvas",        name="Canvas",          description="Full canvas state (nodes + edges + viewport)", mimeType="application/json"),
+    Resource(uri="homelable://nodes",          name="Nodes",           description="All nodes in the homelab", mimeType="application/json"),
+    Resource(uri="homelable://edges",          name="Edges",           description="All network edges/links", mimeType="application/json"),
+    Resource(uri="homelable://scan/pending",   name="Pending devices", description="Discovered devices awaiting approval", mimeType="application/json"),
+    Resource(uri="homelable://scan/runs",      name="Scan history",    description="Recent scan run history", mimeType="application/json"),
+]
+
+ROUTES = {
+    "homelable://canvas":       "/api/v1/canvas",
+    "homelable://nodes":        "/api/v1/nodes",
+    "homelable://edges":        "/api/v1/edges",
+    "homelable://scan/pending": "/api/v1/scan/pending",
+    "homelable://scan/runs":    "/api/v1/scan/runs",
+}
+
+
+async def read_resource(uri: str) -> list[TextContent]:
+    if uri.startswith("homelable://nodes/") and uri != "homelable://nodes/":
+        node_id = uri.split("/")[-1]
+        data = await backend.get(f"/api/v1/nodes/{node_id}")
+        return [TextContent(type="text", text=json.dumps(data, indent=2))]
+
+    if uri not in ROUTES:
+        raise ValueError(f"Unknown resource URI: {uri}")
+
+    data = await backend.get(ROUTES[uri])
+    return [TextContent(type="text", text=json.dumps(data, indent=2))]
+
+
+def register_resources(server: Server):
+    @server.list_resources()
+    async def _list():
+        return RESOURCE_LIST
+
+    @server.read_resource()
+    async def _read(uri: str):
+        return await read_resource(uri)

mcp/app/tools.py

@@ -0,0 +1,154 @@
+import json
+from mcp.server import Server
+from mcp.types import Tool, TextContent
+from .backend_client import backend
+
+
+def register_tools(server: Server):
+
+    @server.list_tools()
+    async def list_tools():
+        return [
+            Tool(name="create_node", description="Add a new node to the homelab canvas", inputSchema={
+                "type": "object",
+                "required": ["type", "label"],
+                "properties": {
+                    "type":     {"type": "string", "enum": ["isp","router","switch","server","proxmox","vm","lxc","nas","iot","ap","generic"]},
+                    "label":    {"type": "string"},
+                    "ip":       {"type": "string"},
+                    "hostname": {"type": "string"},
+                    "status":   {"type": "string", "enum": ["online","offline","unknown","pending"], "default": "unknown"},
+                },
+            }),
+            Tool(name="update_node", description="Update an existing node", inputSchema={
+                "type": "object",
+                "required": ["id"],
+                "properties": {
+                    "id":        {"type": "string"},
+                    "label":     {"type": "string"},
+                    "ip":        {"type": "string"},
+                    "hostname":  {"type": "string"},
+                    "status":    {"type": "string"},
+                    "parent_id": {"type": "string", "description": "ID of the parent node (e.g. Proxmox host for a VM/LXC). Pass null to detach."},
+                },
+            }),
+            Tool(name="delete_node", description="Delete a node from the canvas", inputSchema={
+                "type": "object",
+                "required": ["id"],
+                "properties": {"id": {"type": "string"}},
+            }),
+            Tool(name="create_edge", description="Create a network link between two nodes", inputSchema={
+                "type": "object",
+                "required": ["source", "target"],
+                "properties": {
+                    "source": {"type": "string"},
+                    "target": {"type": "string"},
+                    "type":   {"type": "string", "enum": ["ethernet","wifi","iot","vlan","virtual"], "default": "ethernet"},
+                    "label":  {"type": "string"},
+                },
+            }),
+            Tool(name="delete_edge", description="Delete a network link", inputSchema={
+                "type": "object",
+                "required": ["id"],
+                "properties": {"id": {"type": "string"}},
+            }),
+            Tool(name="trigger_scan", description="Trigger a network discovery scan", inputSchema={
+                "type": "object",
+                "properties": {
+                    "ranges": {"type": "array", "items": {"type": "string"}, "description": "CIDR ranges to scan (uses configured defaults if omitted)"},
+                },
+            }),
+            Tool(name="approve_device", description="Approve a pending discovered device and create a node", inputSchema={
+                "type": "object",
+                "required": ["id"],
+                "properties": {
+                    "id":    {"type": "string"},
+                    "type":  {"type": "string", "enum": ["isp","router","switch","server","proxmox","vm","lxc","nas","iot","ap","generic"], "default": "generic"},
+                    "label": {"type": "string"},
+                },
+            }),
+            Tool(name="hide_device", description="Hide a pending discovered device", inputSchema={
+                "type": "object",
+                "required": ["id"],
+                "properties": {"id": {"type": "string"}},
+            }),
+            Tool(name="get_canvas", description="Get the full canvas: all nodes and edges in the homelab topology", inputSchema={
+                "type": "object",
+                "properties": {},
+            }),
+            Tool(name="list_nodes", description="List all nodes (devices) in the homelab", inputSchema={
+                "type": "object",
+                "properties": {},
+            }),
+            Tool(name="list_pending_devices", description="List devices discovered by scan but not yet approved or hidden", inputSchema={
+                "type": "object",
+                "properties": {},
+            }),
+        ]
+
+    @server.call_tool()
+    async def call_tool(name: str, arguments: dict):
+        result = await _dispatch(name, arguments)
+        return [TextContent(type="text", text=json.dumps(result, indent=2))]
+
+
+def _slim_canvas(raw: dict) -> dict:
+    """Strip React Flow layout/style fields — keep only semantic data for AI use."""
+    NODE_KEEP = {"id", "type", "label", "ip", "hostname", "status", "services", "description", "parentId"}
+    EDGE_KEEP = {"id", "source", "target", "type", "label"}
+
+    def slim_node(n: dict) -> dict:
+        data = n.get("data", {})
+        out = {k: v for k, v in data.items() if k in NODE_KEEP and v not in (None, "", [])}
+        out["id"] = n.get("id")
+        out["node_type"] = n.get("type")
+        return out
+
+    def slim_edge(e: dict) -> dict:
+        return {k: v for k, v in e.items() if k in EDGE_KEEP and v not in (None, "")}
+
+    return {
+        "nodes": [slim_node(n) for n in raw.get("nodes", [])],
+        "edges": [slim_edge(e) for e in raw.get("edges", [])],
+    }
+
+
+async def _dispatch(name: str, args: dict) -> dict:
+    if name == "create_node":
+        return await backend.post("/api/v1/nodes", args)
+
+    if name == "update_node":
+        node_id = args.pop("id")
+        return await backend.patch(f"/api/v1/nodes/{node_id}", args)
+
+    if name == "delete_node":
+        return await backend.delete(f"/api/v1/nodes/{args['id']}")
+
+    if name == "create_edge":
+        return await backend.post("/api/v1/edges", args)
+
+    if name == "delete_edge":
+        return await backend.delete(f"/api/v1/edges/{args['id']}")
+
+    if name == "trigger_scan":
+        body = {"ranges": args["ranges"]} if "ranges" in args else {}
+        return await backend.post("/api/v1/scan/trigger", body)
+
+    if name == "approve_device":
+        device_id = args.pop("id")
+        return await backend.post(f"/api/v1/scan/pending/{device_id}/approve", args)
+
+    if name == "hide_device":
+        return await backend.post(f"/api/v1/scan/pending/{args['id']}/hide", {})
+
+    if name == "get_canvas":
+        raw = await backend.get("/api/v1/canvas")
+        return _slim_canvas(raw)
+
+    if name == "list_nodes":
+        return await backend.get("/api/v1/nodes")
+
+    if name == "list_pending_devices":
+        return await backend.get("/api/v1/scan/pending")
+
+    raise ValueError(f"Unknown tool: {name}")

mcp/pytest.ini

@@ -0,0 +1,2 @@
+[pytest]
+pythonpath = .

mcp/requirements.txt

@@ -0,0 +1,5 @@
+mcp[cli]>=1.0
+httpx>=0.27
+fastapi>=0.115
+uvicorn[standard]>=0.30
+pydantic-settings>=2.0

mcp/tests/conftest.py

@@ -0,0 +1,33 @@
+import os
+import pytest
+from unittest.mock import AsyncMock, patch
+from httpx import AsyncClient, ASGITransport
+
+os.environ.setdefault("MCP_API_KEY", "test_key")
+os.environ.setdefault("BACKEND_URL", "http://testbackend")
+os.environ.setdefault("AUTH_USERNAME", "admin")
+os.environ.setdefault("AUTH_PASSWORD", "admin")
+
+from app.main import app  # noqa: E402
+
+
+@pytest.fixture
+def api_key():
+    return "test_key"
+
+
+@pytest.fixture
+async def client(api_key):
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as c:
+        yield c
+
+
+@pytest.fixture
+def mock_backend():
+    with patch("app.resources.backend") as mock_res, \
+         patch("app.tools.backend") as mock_tools:
+        mock_res.get = AsyncMock()
+        mock_tools.post = AsyncMock()
+        mock_tools.patch = AsyncMock()
+        mock_tools.delete = AsyncMock()
+        yield {"resources": mock_res, "tools": mock_tools}

mcp/tests/test_auth.py

@@ -0,0 +1,28 @@
+import pytest
+from unittest.mock import AsyncMock, patch
+
+
+@pytest.mark.anyio
+async def test_health_no_key(client):
+    resp = await client.get("/health")
+    assert resp.status_code == 200
+
+
+@pytest.mark.anyio
+async def test_missing_api_key(client):
+    resp = await client.get("/mcp")
+    assert resp.status_code == 401
+
+
+@pytest.mark.anyio
+async def test_wrong_api_key(client):
+    resp = await client.get("/mcp", headers={"X-API-Key": "wrong"})
+    assert resp.status_code == 401
+
+
+@pytest.mark.anyio
+async def test_valid_api_key_passes(client, api_key):
+    # Auth passes — mock handle_request so we don't need a live MCP session
+    with patch("app.main.session_manager.handle_request", new_callable=AsyncMock):
+        resp = await client.get("/mcp", headers={"X-API-Key": api_key})
+    assert resp.status_code != 401

mcp/tests/test_resources.py

@@ -0,0 +1,47 @@
+import pytest
+from unittest.mock import AsyncMock, patch
+from app.resources import read_resource
+
+
+@pytest.fixture
+def mock_backend():
+    with patch("app.resources.backend") as m:
+        m.get = AsyncMock(return_value={"data": "ok"})
+        yield m
+
+
+@pytest.mark.anyio
+async def test_read_canvas(mock_backend):
+    result = await read_resource("homelable://canvas")
+    mock_backend.get.assert_called_once_with("/api/v1/canvas")
+    assert len(result) == 1
+
+
+@pytest.mark.anyio
+async def test_read_nodes(mock_backend):
+    await read_resource("homelable://nodes")
+    mock_backend.get.assert_called_once_with("/api/v1/nodes")
+
+
+@pytest.mark.anyio
+async def test_read_edges(mock_backend):
+    await read_resource("homelable://edges")
+    mock_backend.get.assert_called_once_with("/api/v1/edges")
+
+
+@pytest.mark.anyio
+async def test_read_single_node(mock_backend):
+    await read_resource("homelable://nodes/abc123")
+    mock_backend.get.assert_called_once_with("/api/v1/nodes/abc123")
+
+
+@pytest.mark.anyio
+async def test_read_scan_pending(mock_backend):
+    await read_resource("homelable://scan/pending")
+    mock_backend.get.assert_called_once_with("/api/v1/scan/pending")
+
+
+@pytest.mark.anyio
+async def test_read_unknown_uri(mock_backend):
+    with pytest.raises(ValueError, match="Unknown resource URI"):
+        await read_resource("homelable://unknown")

mcp/tests/test_tools.py

@@ -0,0 +1,122 @@
+import pytest
+from unittest.mock import AsyncMock, patch
+from app.tools import _dispatch
+
+
+@pytest.fixture
+def mock_backend():
+    with patch("app.tools.backend") as m:
+        m.post = AsyncMock(return_value={"id": "1"})
+        m.patch = AsyncMock(return_value={"id": "1"})
+        m.delete = AsyncMock(return_value={})
+        m.get = AsyncMock(return_value=[])
+        yield m
+
+
+@pytest.mark.anyio
+async def test_create_node(mock_backend):
+    result = await _dispatch("create_node", {"type": "server", "label": "Proxmox"})
+    mock_backend.post.assert_called_once_with("/api/v1/nodes", {"type": "server", "label": "Proxmox"})
+    assert result == {"id": "1"}
+
+
+@pytest.mark.anyio
+async def test_update_node(mock_backend):
+    await _dispatch("update_node", {"id": "42", "label": "New name"})
+    mock_backend.patch.assert_called_once_with("/api/v1/nodes/42", {"label": "New name"})
+
+
+@pytest.mark.anyio
+async def test_update_node_parent_id(mock_backend):
+    await _dispatch("update_node", {"id": "42", "parent_id": "proxmox-1"})
+    mock_backend.patch.assert_called_once_with("/api/v1/nodes/42", {"parent_id": "proxmox-1"})
+
+
+@pytest.mark.anyio
+async def test_delete_node(mock_backend):
+    await _dispatch("delete_node", {"id": "42"})
+    mock_backend.delete.assert_called_once_with("/api/v1/nodes/42")
+
+
+@pytest.mark.anyio
+async def test_create_edge(mock_backend):
+    await _dispatch("create_edge", {"source": "1", "target": "2", "type": "ethernet"})
+    mock_backend.post.assert_called_once_with("/api/v1/edges", {"source": "1", "target": "2", "type": "ethernet"})
+
+
+@pytest.mark.anyio
+async def test_delete_edge(mock_backend):
+    await _dispatch("delete_edge", {"id": "99"})
+    mock_backend.delete.assert_called_once_with("/api/v1/edges/99")
+
+
+@pytest.mark.anyio
+async def test_trigger_scan_no_ranges(mock_backend):
+    await _dispatch("trigger_scan", {})
+    mock_backend.post.assert_called_once_with("/api/v1/scan/trigger", {})
+
+
+@pytest.mark.anyio
+async def test_trigger_scan_with_ranges(mock_backend):
+    await _dispatch("trigger_scan", {"ranges": ["192.168.1.0/24"]})
+    mock_backend.post.assert_called_once_with("/api/v1/scan/trigger", {"ranges": ["192.168.1.0/24"]})
+
+
+@pytest.mark.anyio
+async def test_approve_device(mock_backend):
+    await _dispatch("approve_device", {"id": "5", "type": "server", "label": "MyServer"})
+    mock_backend.post.assert_called_once_with("/api/v1/scan/pending/5/approve", {"type": "server", "label": "MyServer"})
+
+
+@pytest.mark.anyio
+async def test_hide_device(mock_backend):
+    await _dispatch("hide_device", {"id": "5"})
+    mock_backend.post.assert_called_once_with("/api/v1/scan/pending/5/hide", {})
+
+
+@pytest.mark.anyio
+async def test_get_canvas(mock_backend):
+    mock_backend.get = AsyncMock(return_value={
+        "nodes": [
+            {
+                "id": "n1",
+                "type": "router",
+                "position": {"x": 100, "y": 200},
+                "width": 160,
+                "height": 80,
+                "data": {"label": "Freebox", "ip": "192.168.1.1", "status": "online"},
+            }
+        ],
+        "edges": [
+            {"id": "e1", "source": "n1", "target": "n2", "type": "ethernet", "animated": True, "style": {"stroke": "#fff"}},
+        ],
+        "viewport": {"x": 0, "y": 0, "zoom": 1},
+    })
+    result = await _dispatch("get_canvas", {})
+    mock_backend.get.assert_called_once_with("/api/v1/canvas")
+    # Layout/style fields stripped, only semantic data kept
+    assert result["nodes"] == [{"id": "n1", "node_type": "router", "label": "Freebox", "ip": "192.168.1.1", "status": "online"}]
+    assert result["edges"] == [{"id": "e1", "source": "n1", "target": "n2", "type": "ethernet"}]
+    assert "viewport" not in result
+
+
+@pytest.mark.anyio
+async def test_list_nodes(mock_backend):
+    mock_backend.get = AsyncMock(return_value=[{"id": "1", "label": "Freebox"}])
+    result = await _dispatch("list_nodes", {})
+    mock_backend.get.assert_called_once_with("/api/v1/nodes")
+    assert result == [{"id": "1", "label": "Freebox"}]
+
+
+@pytest.mark.anyio
+async def test_list_pending_devices(mock_backend):
+    mock_backend.get = AsyncMock(return_value=[{"id": "p1", "ip": "192.168.1.50"}])
+    result = await _dispatch("list_pending_devices", {})
+    mock_backend.get.assert_called_once_with("/api/v1/scan/pending")
+    assert result == [{"id": "p1", "ip": "192.168.1.50"}]
+
+
+@pytest.mark.anyio
+async def test_unknown_tool():
+    with pytest.raises(ValueError, match="Unknown tool"):
+        await _dispatch("nonexistent", {})