refactor: introduce model layer for centralized data synchronization

Add hoover model.js as a central reactive store per subsystem, replacing
per-component data fetching with a single source of truth.

- Add hoover/model.js with modelRegister, modelFetch, and WS invalidation
- Refactor websocket.js to route messages to model refresh (drop per-component
  subscribe/unsubscribe)
- Simplify component.js by removing WS subscription management
- Add refresh option to apiSubmit, deprecate refactorLoad and checkAbort
- Rewrite all pages to use getModel() instead of inline data fetching
- Bootstrap model registrations in app.js
- Add GET /api/firewall/state endpoint
- Fix restart-services.sh restart order and add service health verification
- Update hoover.md docs with model layer architecture

docs/hoover.md

@@ -1,6 +1,6 @@
 # Hoover — SPA Framework
 
-Hoover is the custom reactive SPA framework used by the Vacuum Wall web UI. It provides a lightweight VDOM rendering engine, reactive state, a hash-based router, WebSocket bindings, and shared UI components. No build step is required — all code runs as ES modules served raw by nginx.
+Hoover is the custom reactive SPA framework used by the Vacuum Wall web UI. It provides a lightweight VDOM rendering engine, reactive state, a hash-based router, a central model layer for data synchronization, and shared UI components. No build step is required — all code runs as ES modules served raw by nginx.
 
 ## Overview
 
@@ -11,7 +11,8 @@ Hoover is the custom reactive SPA framework used by the Vacuum Wall web UI. It p
 | Render | `render.js` | Render engine: container-level diffing, component lifecycle |
 | Component | `component.js` | Page definitions, lifecycle hooks, state caching |
 | Router | `router.js` | Hash-based SPA router, `Link` navigation component |
-| WebSocket | `websocket.js` | Auto-reconnect WS, topic subscriptions, auto-refresh |
+| Model | `model.js` | **Central** reactive store per subsystem, fetch, WS invalidation, loading states |
+| WebSocket | `websocket.js` | Auto-reconnect WS, topic routing to model refresh |
 | API | `api.js` | JSON fetch wrapper, toast notifications, form submissions |
 | Helpers | `helpers.js` | Escaping, DOM value helpers, zone parsing |
 | Components | `components/*.js` | Reusable UI: layout, data tables, modals, toasts |
@@ -24,6 +25,9 @@ All public APIs are exported from `hoover/index.js`. Pages and app bootstrap imp
 ```
 index.html — static shell with #sidebar, #main, #modal-root
    └── app.js — SPA bootstrap
+         ├── modelRegister('firewall', { subsystem: 'firewall', fetch: ... })
+         ├── modelRegister('dnsmasq', { subsystem: 'dnsmasq', fetch: ... })
+         ├── modelFetch('firewall') / modelFetch('dnsmasq') / ...
          ├── render(sidebarEl, Sidebar)    — sidebar render root
          ├── render(mainEl, MainContent)   — main content render root
          └── connect()                     — WebSocket lifecycle
@@ -33,14 +37,44 @@ The HTML shell (`index.html`) provides named DOM containers (`#sidebar`, `#main`
 
 Each render root registers a render function via `render(container, fn)`. When reactive state changes, all registered render functions re-execute in a single batched microtask, producing new VNodes that are diffed against the previous tree and patched into the DOM.
 
+### Data Flow
+
+```
+WS message → refreshByTopic(topic) → modelFetch(name) → model.data = apiFetch()
+                                                       → reactivity proxy triggers render
+                                                                 → page.render(state) reads model data
+```
+
+The **model layer** is the single source of truth for subsystem data. Pages never call `apiFetch` for data loading — they call `getModel(name)` in `init()` to get a reactive model, then read `model.data`, `model.loading`, and `model.error` in `render()`.
+
+Mutations (`ConfirmDelete`, `ActionButton`, `QuickModal`, `apiSubmit`) refresh models by name (`refresh: 'firewall'`), not by calling load functions. The model layer ensures in-flight dedup, loading flag management, and WS-driven auto-refresh.
+
 ## Bootstrap
 
 The app starts from `webui/static/app.js`:
 
 ```javascript
-import { h, render, Link, hComp, ToastContainer, connect, reactive } from '/static/hoover/index.js?v=4';
+import { h, render, Link, hComp, ToastContainer, connect, apiFetch,
+         modelRegister, modelFetch, reactive } from '/static/hoover/index.js?v=7';
 
-// 1. Create reactive router state
+// 1. Register subsystem models
+modelRegister('firewall', {
+    subsystem: 'firewall',
+    fetch: async () => {
+        const r = await apiFetch('/api/firewall/config');
+        if (!r.ok) throw new Error(r.error);
+        return r.data;
+    },
+});
+
+// ... more modelRegister calls ...
+
+// 2. Initial fetch for all models
+for (const name of ['status', 'firewall', 'network', 'dnsmasq', 'nginx', 'acme', 'wireguard']) {
+    modelFetch(name);
+}
+
+// 3. Create reactive router state
 const router = {
     state: reactive({ path: location.hash.slice(1) || '/dashboard' }),
     component() {
@@ -50,16 +84,16 @@ const router = {
     },
 };
 
-// 2. Listen for hash changes
+// 4. Listen for hash changes
 window.addEventListener('hashchange', () => {
     router.state.path = location.hash.slice(1) || '/dashboard';
 });
 
-// 3. Mount render roots
+// 5. Mount render roots
 render(sidebarEl, Sidebar);
 render(mainEl, MainContent);
 
-// 4. Start WebSocket (deferred to avoid initial render conflict)
+// 6. Start WebSocket (deferred to avoid initial render conflict)
 setTimeout(connect, 0);
 ```
 
@@ -93,6 +127,121 @@ state.items.push(newItem);
 
 Manually schedule a re-render. Only one microtask is queued regardless of how many times it's called in the same tick.
 
+## Model
+
+The model layer (`model.js`) is the **central** data synchronization mechanism. Each subsystem gets one reactive model with `{ data, loading, refreshing, error }`. Hoover handles fetching, WS invalidation, loading states, and in-flight dedup.
+
+### `modelRegister(name, definition)`
+
+Register a subsystem model at app bootstrap.
+
+```javascript
+modelRegister('firewall', {
+    subsystem: 'firewall',           // WS topic to listen for ('*' = all)
+    fetch: async (signal) => {       // async fetch function
+        const r = await apiFetch('/api/firewall/config', { signal });
+        if (!r.ok) throw new Error(r.error);
+        return r.data;
+    },
+    defaultData: null,               // optional, initial data value
+});
+
+// Parameterized example — tab-aware fetch:
+modelRegister('logs', {
+    subsystem: '*',
+    fetch: async (signal, tab) => {
+        const url = LOG_TABS[tab || 'journal'];
+        const r = await apiFetch(url, { signal });
+        if (!r.ok) throw new Error(r.error);
+        return (r.data || '').split('\n').filter(l => l.length > 0);
+    },
+});
+```
+
+| Parameter | Description |
+|---|---|
+| `name` | Model name (e.g., `'firewall'`, `'dnsmasq'`) |
+| `definition.subsystem` | WS topic string. Use `'firewall'`, `'dnsmasq'`, etc. Use `'*'` to match all topics. |
+| `definition.fetch(signal?, param?)` | Async function that fetches and returns data. Throws on error. Receives optional `AbortSignal` and optional parameter (e.g., tab key). |
+| `definition.defaultData` | Optional initial data value (default: `null`) |
+
+### `getModel(name)`
+
+Get a reactive model by name. Returns the model object with `{ data, loading, refresh, error }` properties. Call in `init()` to access model state in `render()`.
+
+```javascript
+// In page init
+init() {
+    return {
+        firewall: getModel('firewall'),
+    };
+}
+
+// In render
+render(state) {
+    const guard = renderGuard(state.firewall, 'Zones', 'Firewall zones', state.firewall.data?.zones);
+    if (guard) return guard;
+
+    const zones = state.firewall.data?.zones || [];
+    // ...
+}
+```
+
+### `modelFetch(name, signal?, param?)`
+
+Trigger a fetch for the named model. In-flight dedup ensures concurrent callers get the same promise. Updates `loading`/`refreshing` flags automatically.
+
+```javascript
+// Initial load
+modelFetch('firewall');
+
+// Post-mutation refresh
+const r = await apiFetch('/api/firewall/zones', { method: 'POST', body });
+if (r.ok) modelFetch('firewall');
+
+// Parameterized fetch (e.g., tab-aware logs)
+modelFetch('logs', 'journal');
+modelFetch('logs', 'nginx-access');
+```
+
+**Behavior:**
+- If a fetch is already in progress for this model (and param), returns the existing promise (dedup).
+- Sets `model.loading = true` on first fetch, `model.refreshing = true` on subsequent fetches.
+- Clears `model.error` before fetch.
+- On success, assigns result to `model.data`.
+- On failure, stores error in `model.error`.
+- Flags cleared in `finally` block.
+- Does not abort in-progress fetches — other consumers may still need the data.
+- The `param` argument is passed to `fetch(signal, param)` for parameterized models. Dedup key is `name: param`.
+
+### `refreshByTopic(topic)`
+
+Refresh all models whose subsystem topic matches. Called by `websocket.js` when a WS message arrives.
+
+| Model `subsystem` | Topic | Match? |
+|---|---|---|
+| `'firewall'` | `'firewall'` | Yes |
+| `'firewall'` | `'dnsmasq'` | No |
+| `'*'` | `'firewall'` | Yes (always matches) |
+| `'nginx'` | `'*'` | Yes (wildcard topic) |
+
+### `collectLoadingModels(...models)`
+
+Combine loading/refreshing/error from multiple models for composite `renderGuard` calls.
+
+```javascript
+// Pages that consume multiple models
+render(state) {
+    const c = collectLoadingModels(state.nginx, state.acme);
+    const guard = renderGuard({ loading: c.loading, refreshing: c.refreshing, error: c.error },
+        'Proxy', 'Nginx reverse proxy');
+    if (guard) return guard;
+    // ...
+}
+```
+
+Returns `{ loading, refreshing, error }` derived from the union of all passed models.
+
 ## Virtual DOM
 
 ### `h(tag, props, ...children)`
@@ -116,8 +265,8 @@ h('#comp', { component: MyPage, key: '/dashboard' }, [])
 
 | Prop | Behavior |
 |---|---|
-| `class` | String or object (`{ active: bool }` → truthy keys joined as class names) |
-| `style` | String or object (`{ color: 'red' }` → applies to `el.style`) |
+| `class` | String or object (`{ active: bool }` — truthy keys joined as class names) |
+| `style` | String or object (`{ color: 'red' }` — applies to `el.style`) |
 | `html` / `innerHTML` | Sets `innerHTML` directly |
 | `textContent` | Sets `textContent` directly |
 | `value` | On `<input>`, `<textarea>`, `<select>`: sets `.value`; otherwise sets attribute |
@@ -160,76 +309,59 @@ The render function executes on every reactive update. It can return a single VN
 
 ### `definePage(def)`
 
-Define a page component with reactive state, WebSocket topic subscriptions, async data loading, and rendering.
+Define a page component with reactive state and rendering. Pages access data through models, not by fetching directly.
 
 ```javascript
 export default definePage({
-    // Return initial data. `loading`, `refreshing`, and `error` are auto-injected.
+    // Return initial state — models are obtained via getModel()
     init() {
-        return { data: null };
+        return {
+            firewall: getModel('firewall'),
+        };
     },
 
-    // WebSocket topics to subscribe to on mount ('*' = all)
-    subscribe: ['firewall'],
-
-    // Called on mount and when WS topic updates arrive
-    async load(state, abortController, entry) {
-        const myId = entry ? entry.requestId : 0;
-        state.loading = true;
-
-        try {
-            const res = await apiFetch('/api/firewall/status', { signal: abortController?.signal });
-            if (abortController?.signal.aborted || entry.requestId !== myId) return;
-            if (res.ok) state.data = res.data;
-            else state.error = res.error;
-        } catch (e) {
-            if (abortController?.signal.aborted) return;
-            state.error = String(e);
-        }
-        state.loading = false;
+    // Optional: one-time setup on mount (e.g., opening a modal dialog)
+    // Not used for data loading — model layer handles that
+    async load(state) {
+        // Rarely needed
     },
 
     // Called on every reactive update — return VNode(s)
     render(state) {
-        const guard = renderGuard(state, 'Zones', 'Zone management', state.data);
+        const guard = renderGuard(state.firewall, 'Zones', 'Firewall zone management', state.firewall.data?.zones);
         if (guard) return guard;
 
+        const zones = state.firewall.data?.zones?.available || [];
         return [
             PageHeader({ title: 'Zones' }),
-            h('div', { class: 'card' }, esc(JSON.stringify(state.data))),
+            zones.map(z => h('div', { class: 'card', key: z }, esc(z))),
         ];
     },
+
+    // Optional: cleanup on unmount
+    onUnmount(state) {
+        // abort pending fetches, clear cached state
+    },
 });
 ```
 
-**Auto-injected state:** `definePage` automatically injects `loading: true`, `refreshing: false`, and `error: null` into the state object before merging with `init()`'s return value. Your `init()` only needs to define data fields:
-
-```javascript
-// Before
-init() { return { items: [], loading: true, refreshing: false, error: null }; }
-
-// After (auto-injected)
-init() { return { items: [] }; }
-```
-
-Page `init()` values override defaults if explicitly set.
+Pages get data from models reactive — they never call `apiFetch` in `load()`. The model layer fetches data, manages loading/error states, and triggers re-renders when data arrives.
 
 ### Page Definition Properties
 
 | Property | Required | Description |
 |---|---|---|
-| `init()` | Yes | Returns initial state. Wrapped with `reactive()` by `definePage`. |
-| `subscribe` | No | Array of topic strings (e.g., `['firewall']`). Use `['*']` for all. WS auto-refresh calls `load()` on topic update. |
-| `load(state, abortController, entry)` | No | Async data loader. Called on mount and by WS auto-refresh. Receive an `AbortController` for cancellation. Check `entry.requestId` against captured ID to discard stale results. |
-| `render(state)` | Yes | Returns VNode(s) for the page. |
-| `onUnmount(state)` | No | Called when page is unmounted. Use for custom cleanup. |
+| `init()` | Yes | Returns initial state object. Wrapped with `reactive()` by `definePage`. Call `getModel(name)` here to access model data. |
+| `load(state)` | No | Optional one-time setup called on mount. Not used for data loading — use model layer instead. |
+| `render(state)` | Yes | Returns VNode(s) for the page. Read model data from `state.<model>.data`. |
+| `onUnmount(state)` | No | Called when page is unmounted. Use for custom cleanup (e.g., aborting page-local fetches). |
 
 ### Page Lifecycle
 
-1. **Mount**: `init()` creates state → `load()` fires with fresh `AbortController` → WS subscriptions registered.
-2. **Update**: Reactive state change → `render()` re-executes → VDOM diff patches DOM.
-3. **WS auto-refresh**: Topic message arrives → debounced (300ms) → prior `load()` aborted → `load()` re-called with new `AbortController`.
-4. **Unmount**: Prior `load()` aborted → WS subscriptions removed → `onUnmount()` called → component entry destroyed.
+1. **Mount**: `init()` creates state → `load()` fires if defined → component tracked by key.
+2. **Update**: Reactive state change (from model data update, navigation, etc.) → `render()` re-executes → VDOM diff patches DOM.
+3. **WS auto-refresh**: Topic message arrives → `refreshByTopic()` → `modelFetch()` for matching models → `model.data` update → reactivity triggers `render()`.
+4. **Unmount**: `onUnmount()` called if defined → component entry destroyed.
 
 ### `hComp(renderer, key)`
 
@@ -294,32 +426,36 @@ Start the WebSocket connection to the daemon at `ws://<host>/ws` (auto-detects `
 
 | Type | Fields | Effect |
 |---|---|---|
-| `versions` | `updated: [topic, …]` | Auto-refresh components subscribed to listed topics |
+| `versions` | `updated: [topic, …]` | Refresh all models matching listed topics |
 | `refresh` | `topics: [topic, …]` | Same as `versions` |
-| `notify` | `topic` | Auto-refresh components subscribed to the topic |
-| `status` | `topic` | Auto-refresh components subscribed to the topic |
+| `notify` | `topic` | Refresh all models matching the topic |
+| `status` | `topic` | Refresh all models matching the topic |
 
-Components subscribed to `'*'` match all topics.
+Model `subsystem: '*'` matches all topics.
 
 ### WS Auto-Refresh Flow
 
-When a WS message arrives for a subscribed topic:
-1. Debounce starts/cancels (300ms).
-2. Any in-flight `load()` is aborted.
-3. After debounce, `load()` is called with a new `AbortController`.
-4. The `entry.requestId` pattern ensures stale async results are discarded.
+When a WS message arrives for a topic:
+1. `refreshByTopic(topic)` iterates registered models.
+2. Matching models call `modelFetch(name)`.
+3. Model fetch updates `model.data`, triggering reactivity and page re-renders.
+4. In-flight dedup prevents duplicate fetches.
+
+Pages have no awareness of WS events. The model layer handles all WS-driven refresh.
 
 ### `onMessage(topics, handler)`
 
 Direct one-off subscription for code outside `definePage`:
 
 ```javascript
-const unsub = onMessage(['firewall'], (state) => {
-    // handle message
+const unsub = onMessage(['firewall'], (msg) => {
+    // handle raw message
 });
 // Later: unsub();
 ```
 
+Handler receives the parsed WS message object.
+
 ## API
 
 ### `apiFetch(url, options)`
@@ -358,41 +494,62 @@ function MainContent() {
 
 ### `apiSubmit(config)`
 
-Build a form action for `formModal`. Collects body, validates, submits via `apiFetch`, toasts, and closes the modal on success.
+Build a form action for `formModal`. Collects body, validates, submits via `apiFetch`, toasts, and closes the modal on success. After success, refreshes the named model(s).
 
 ```javascript
 apiSubmit({
     url: '/api/firewall/zones',
-    method: 'POST',          // optional, defaults to 'POST'
+    method: 'POST',              // optional, defaults to 'POST'
     body: () => ({ name: $val('zone-name') }),
     validate: (b) => !b.name ? 'Name required' : null,
     successMsg: 'Zone created',
-    reload: () => load(state),    // optional, called after success toast
+    refresh: 'firewall',         // model name(s) to refresh after success
+    closeModal: () => closeModal(),  // optional, called after success toast
 }),
 ```
 
-Returns an object matching the `formModal` action shape. Spread it into the actions array: `...apiSubmit({ … })`.
+Returns an array of action descriptors matching the `formModal` action shape. Spread it into the actions array: `...apiSubmit({ … })`.
 
-### `checkAbort(entry, abortController)`
+**Parameters:**
 
-Check if a request has been aborted or become stale. Returns `true` if the caller should bail out early. Used between sequential fetches in multi-fetch page loads.
+| Parameter | Description |
+|---|---|
+| `url` | API URL |
+| `method` | HTTP method (default: `'POST'`) |
+| `body` | `() => body` function, or `undefined` for no body |
+| `validate` | `(body) => string | null` — validation function |
+| `successMsg` | Success toast message |
+| `refresh` | Model name (`string`) or array of names (`string[]`) to refresh via `modelFetch()` after success |
+| `closeModal` | Optional function to call after success (e.g., `() => closeModal()`) |
+| `submitText` | Submit button text (default: `'Submit'`) |
+
+### `checkAbort(ac)`
+
+**Deprecated.** Use model layer (`modelRegister` / `modelFetch`) for data fetching with abort handling and loading state management.
+
+Create an abort-checking function from an `AbortController`. Returns `true` if the caller should bail out early. Used between sequential fetches in multi-fetch operations.
 
 ```javascript
-if (checkAbort(entry, abortController)) return;
+const isAborted = checkAbort(abortCtrl);
+const r = await apiFetch('/api/first', { signal });
+if (isAborted()) return;
+const r2 = await apiFetch('/api/second', { signal });
 ```
 
-### `refactorLoad(state, checkDone, fetchFn, opts)`
+### `refactorLoad(state, dataKey, fetchFn, opts)`
 
-Async load wrapper that encapsulates `loading`/`refreshing` flag management, abort checking, and staleness guards. Replaces the ~12-line boilerplate pattern in every page's `load()` function.
+**Deprecated.** Use model layer (`modelRegister` / `modelFetch`) for data fetching with abort handling and loading state management.
+
+Async load wrapper that encapsulates `loading`/`refreshing` flag management, abort checking, and staleness guards. Used for page-local fetches that don't go through the model layer.
 
 ```javascript
 import { refactorLoad } from '/static/hoover/index.js';
 
 async function load(state, abortController, entry) {
     await refactorLoad(state,
-        // checkDone: truthy means existing data, use refreshing vs loading
+        // dataKey: truthy means existing data, use refreshing vs loading
         s => s.items?.length,
-        // fetchFn: receives (state, signal, isAborted) 
+        // fetchFn: receives (state, signal, isAborted)
         // isAborted is a zero-arg function to re-check abort between sequential fetches
         async (s, signal, isAborted) => {
             const r = await apiFetch('/api/mydata', { signal });
@@ -409,14 +566,14 @@ async function load(state, abortController, entry) {
 | Parameter | Description |
 |---|---|
 | `state` | Page state object |
-| `checkDone(state)` | Returns truthy if data already exists (sets `refreshing` vs `loading`) |
+| `dataKey(state)` | Returns truthy if data already exists (sets `refreshing` vs `loading`) |
 | `fetchFn(state, signal, isAborted)` | Page-specific async fetch logic. The third argument `isAborted()` is a zero-arg function to re-check abort/stale status between sequential fetches |
 | `opts.entry` | Router entry with `requestId` for staleness checks |
 | `opts.abortController` | AbortController for cancellation |
 
-### `poll(props)`
+### `poll(opts)`
 
-Poll an API endpoint until a terminal state is reached. Returns an abort handle `() => void`.
+Poll an API endpoint until a terminal state is reached.
 
 ```javascript
 import { poll } from '/static/hoover/index.js';
@@ -429,7 +586,7 @@ poll({
     onErrorKey: (d) => d.status === 'failed',
     onComplete: (d) => {
         toast('Certificate issued', 'success');
-        load(state);
+        modelFetch('acme');
     },
     onError: (d) => {
         toast('Issuance failed', 'error');
@@ -442,8 +599,8 @@ poll({
 | Parameter | Description |
 |---|---|
 | `url` | Poll URL |
-| `interval` | Poll interval in ms (default: `2000`) |
-| `timeout` | Max poll time in ms (default: `120000`) |
+| `interval` | Poll interval in ms (default: `3000`) |
+| `timeout` | Max poll time in ms (default: `60000`) |
 | `successKey` | `(data) => boolean` — when true, stops polling and calls `onComplete` |
 | `onErrorKey` | `(data) => boolean` — when true, stops polling and calls `onError` |
 | `onComplete` | `(data) => void`, called on success |
@@ -528,7 +685,7 @@ Flex button container with 8px gap. Accepts VNode children directly.
 ```javascript
 ActionGroup(
     h('button', { class: 'btn btn-primary', 'on:click': addFn }, 'Add'),
-    ActionButton({ url: '/api/apply', label: 'Apply', reload: () => load(state) }),
+    ActionButton({ url: '/api/apply', label: 'Apply', refresh: 'firewall' }),
 )
 ```
 
@@ -536,12 +693,23 @@ ActionGroup(
 
 Return early with loading/error/empty-state VNodes. Returns `null` when data is ready, allowing the page to render its content.
 
+**Single model:**
+
 ```javascript
-const guard = renderGuard(state, 'Zones', 'Zone management', state.zones);
+const guard = renderGuard(state.firewall, 'Zones', 'Zone management', state.firewall.data?.zones);
 if (guard) return guard;
 ```
 
-Checks `state.loading`, `state.error`, and `data` presence in that order. Uses `state.refreshing` to show "Refreshing…" instead of "Loading…".
+**Multiple models (use `renderGuardMulti`):**
+
+```javascript
+const guard = renderGuardMulti('Proxy', 'Nginx reverse proxy', state.nginx, state.acme);
+if (guard) return guard;
+```
+
+`renderGuardMulti` internally calls `collectLoadingModels` then delegates to `renderGuard`. For fine-grained control over loading flags, `collectLoadingModels` is still available.
+
+Checks `state.loading`, `state.error`, and data presence in that order. Uses `state.refreshing` to show "Refreshing…" instead of "Loading…".
 
 ### Data Display
 
@@ -582,32 +750,43 @@ Card container with optional header.
 
 #### `ConfirmDelete(props)`
 
-Delete button with native `confirm()` dialog, then API `DELETE` call, toast, and optional reload.
+Delete button with native `confirm()` dialog, then API `DELETE` call, toast, and model refresh.
 
 ```javascript
 ConfirmDelete({
     url: '/api/firewall/zones/myzone',
     message: 'Delete zone myzone?',
     success: 'Zone deleted',
-    reload: () => load(state),
+    refresh: 'firewall',
     label: 'Delete',
 })
 ```
 
+**Parameters:**
+
+| Parameter | Description |
+|---|---|
+| `url` | API DELETE URL |
+| `message` | Confirmation prompt text |
+| `success` | Success toast message (default: `'Removed'`) |
+| `refresh` | Model name (`string`) or array of names (`string[]`) to refresh via `modelFetch()` |
+| `label` | Button text (default: `'Remove'`) |
+| `body` | Optional JSON body to send with DELETE |
+
 #### `ActionButton(props)`
 
-Inline button that POSTs to an API endpoint, toasts on result, and optionally reloads state. Supports toggle labels for on/off buttons.
+Inline button that POSTs to an API endpoint, toasts on result, and optionally refreshes models. Supports toggle labels for on/off buttons.
 
 ```javascript
 ActionButton({
     url: '/api/dhcp/apply',
-    method: 'POST',              // optional, defaults to 'POST'
-    body: () => undefined,       // optional
+    method: 'POST',               // optional, defaults to 'POST'
+    body: () => undefined,        // optional
     label: 'Apply',
     successMsg: 'Applied',
-    errorType: 'error',          // optional, defaults to 'error'
-    reload: () => load(state),
-    cls: 'btn btn-outline',      // optional
+    errorType: 'error',           // optional, defaults to 'error'
+    refresh: 'dnsmasq',           // model name(s) to refresh
+    cls: 'btn btn-outline',       // optional
     disabled: false,
 })
 
@@ -618,8 +797,8 @@ ActionButton({
     labelOn: 'Disable',
     labelOff: 'Enable',
     condition: z.masquerade,
-    reload: () => load(state),
-}),
+    refresh: 'firewall',
+})
 ```
 
 **Parameters:**
@@ -634,26 +813,24 @@ ActionButton({
 | `condition` | Toggle condition for `labelOn`/`labelOff` |
 | `successMsg` | Success toast message |
 | `errorType` | Toast type for errors (default: `'error'`) |
-| `reload` | `() => Promise`, called on success |
+| `refresh` | Model name (`string`) or array of names (`string[]`) to refresh via `modelFetch()` after success |
 | `cls` | Button CSS classes (default: `'btn btn-outline'`) |
 | `disabled` | Disabled state |
 
 #### `ActionCell(props)`
 
-Standardizes "action button + ConfirmDelete" in a table cell. Replaces the common pattern of an edit button followed by a delete button.
+Standardizes "action button + ConfirmDelete" in a table cell. Use for rows that need an edit action alongside a delete action.
 
 ```javascript
 ActionCell({
     editLabel: 'Edit',
-    editClick: () => editDomain({ ...item, _s: state }),
-    removeUrl: '/api/proxy/domains/' + enc(item.domain),
-    removeMessage: 'Remove proxy for ' + item.domain + '?',
+    editClick: () => editDomain({ ...d, _s: state }),
+    removeUrl: '/api/proxy/domains/' + enc(d.domain),
+    removeMessage: 'Remove proxy for ' + d.domain + '?',
     removeSuccess: 'Domain removed',
-    removeReload: () => load(state),
-    removeLabel: 'Delete',       // optional, defaults to 'Remove'
-    removeBody: undefined,       // optional, JSON body for DELETE
-    editCls: 'btn btn-sm btn-outline',  // optional, defaults to 'btn btn-sm btn-outline'
-}),
+    removeRefresh: 'proxy',
+    removeLabel: 'Delete',
+})
 ```
 
 **Parameters:**
@@ -665,7 +842,7 @@ ActionCell({
 | `removeUrl` | API DELETE URL |
 | `removeMessage` | Confirmation prompt text |
 | `removeSuccess` | Success toast message |
-| `removeReload` | Reload function |
+| `removeRefresh` | Model name (`string`) or array of names (`string[]`) to refresh after delete |
 | `removeLabel` | Delete button label (default: `'Remove'`) |
 | `removeBody` | Optional JSON body to send with DELETE |
 | `editCls` | Override classes for edit button (default: `'btn btn-sm btn-outline'`) |
@@ -728,38 +905,6 @@ ServiceStatus({ state: dmsk.state || 'down', label: 'Dnsmasq' })
 | `state` | Service state string (e.g. `'up'`, `'down'`) |
 | `label` | Optional label text after the badge |
 
-#### `ActionCell(props)`
-
-Standardizes "action button + ConfirmDelete" in a table cell. Use for rows that need an edit action alongside a delete action.
-
-```javascript
-ActionCell({
-    editLabel: 'Edit',
-    editClick: () => editDomain({ ...d, _s: state }),
-    removeUrl: '/api/proxy/domains/' + enc(d.domain),
-    removeMessage: 'Remove proxy for ' + d.domain + '?',
-    removeSuccess: 'Domain removed',
-    removeReload: () => load(state),
-    removeLabel: 'Delete',
-})
-```
-
-See `ActionButton(props)` and `ConfirmDelete(props)` for parameter details.
-
-**Parameters:**
-
-| Parameter | Description |
-|---|---|
-| `editLabel` | First button text |
-| `editClick` | First button click handler |
-| `removeUrl` | API DELETE URL |
-| `removeMessage` | Confirmation prompt text |
-| `removeSuccess` | Success toast message |
-| `removeReload` | Reload function |
-| `removeLabel` | Delete button label (default: `'Remove'`) |
-| `removeBody` | Optional JSON body to send with DELETE |
-| `editCls` | Override classes for edit button (default: `'btn btn-sm btn-outline'`) |
-
 #### `MonoText(props)`
 
 Monospace text with optional truncation. Renders as `<span class="mono-text">`.
@@ -808,7 +953,12 @@ Table({
     rows: items.map(i => h('tr', null,
         h('td', null, esc(i.name)),
         h('td', null, StatusDot({ status: i.state })),
-        h('td', null, ConfirmDelete({ url: `/api/item/${i.id}`, message: `Delete ${i.name}?`, reload: () => load(state) })),
+        h('td', null, ConfirmDelete({
+            url: '/api/item/' + enc(i.id),
+            message: 'Delete ' + esc(i.name) + '?',
+            success: 'Item removed',
+            refresh: 'firewall',
+        })),
     )),
     emptyText: 'No items',
 })
@@ -876,10 +1026,10 @@ const addZone = QuickModal({
         validate: (b) => !b.name ? 'Name required' : null,
         successMsg: 'Zone created',             // or (data) => string
     },
-    reload: (data) => load(data),               // called on success with data argument
+    refresh: 'firewall',               // model name(s) to refresh after success
 });
 
-// Usage in render — pass state as data so reload can call load(state):
+// Usage in render:
 h('button', { 'on:click': () => addZone(state) }, 'Add Zone')
 ```
 
@@ -892,9 +1042,9 @@ h('button', { 'on:click': () => addZone(state) }, 'Add Zone')
 | `submit.url` | API URL or `(data) => string` |
 | `submit.method` | HTTP method (default: `'POST'`) |
 | `submit.body` | `(data) => object`, body to send (note: the function is called with the data argument from the outer call) |
-| `submit.validate` | `(body) => string\|null`, validation function |
+| `submit.validate` | `(body) => string | null`, validation function |
 | `submit.successMsg` | Success toast message or `(data) => string` |
-| `reload` | `(data) => Promise`, called after success; receives the same data argument passed to the modal |
+| `refresh` | Model name (`string`) or array of names (`string[]`) to refresh via `modelFetch()` after success |
 | `handler` | Optional custom handler `(data, closeModal) => void` that bypasses apiSubmit |
 | `submitLabel` | Submit button label (default: `'Submit'`) |
 
@@ -910,7 +1060,7 @@ const editIface = MultiSelectModal({
     selected: zone.interfaces,
     fieldKey: 'interfaces',
     successMsg: 'Interfaces updated',
-    reload: () => load(state),
+    refresh: 'firewall',
 });
 
 // Usage:
@@ -927,7 +1077,7 @@ h('button', { 'on:click': editIface }, 'Edit')
 | `selected` | Currently selected values (`string[]`) |
 | `fieldKey` | JSON key for the submitted field |
 | `successMsg` | Success toast message (default: `'Updated'`) |
-| `reload` | `() => Promise`, called on success |
+| `refresh` | Model name (`string`) or array of names (`string[]`) to refresh via `modelFetch()` after success |
 
 ### Toast
 
@@ -948,16 +1098,18 @@ Render the toast notification container. Include in the main render root. See AP
 
 ## Versioned Imports
 
-Static assets in `app.js` are imported with querystring version pins (e.g., `?v=4`) to invalidate browser cache when the framework changes. Page imports omit the version string since they reference the barrel export, which the server handles with appropriate caching headers.
+Static assets in `app.js` are imported with querystring version pins (e.g., `?v=7`) to invalidate browser cache when the framework changes. Page imports also include version pins. The server handles caching headers; the version query string ensures browser cache invalidation.
 
 Dev mode (`VACUUM_WALL_DEV` set) disables aggressive static asset caching.
 
 ## Conventions
 
 - **Pages** export `definePage({ … })` as default. Each page in `webui/static/pages/`.
-- **State**: `definePage` auto-injects `loading: true`, `refreshing: false`, `error: null`. `init()` only returns data fields.
-- **Load function** pattern: set `loading`/`refreshing` → `apiFetch` with abort signal → check staleness → assign data or error → clear loading flags.
-- **Render** pattern: `renderGuard` early return → data rendering. Always return VNode array or single VNode.
+- **Model-first data loading**: Pages get data from `getModel(name)` in `init()`. The model layer handles fetching, loading states, error handling, and WS-driven refresh. Pages never call `apiFetch` in `load()`.
+- **Render pattern**: `renderGuard` early return → data rendering. Always return VNode array or single VNode.
+- **Multi-model pages**: Use `renderGuardMulti(title, subtitle, ...models)` for combined loading/error guard. `collectLoadingModels` is still exported for edge cases needing raw flags.
+- **Mutation refresh**: UI components use `refresh: 'model_name'` to trigger `modelFetch()` after API mutations. Accepts single name or array.
 - **Keys** on list items use unique identifiers (`item.id`), not array indices.
-- **Escaping:** Use `esc()` for any user-controlled text rendered in `h()` children. Use `enc()` for URL segments.
-- **Modals:** Use `formModal` + `apiSubmit` for standard CRUD operations. Use `openModal` + custom render function for non-form content.
+- **Escaping**: Use `esc()` for any user-controlled text rendered in `h()` children. Use `enc()` for URL segments.
+- **Modals**: Use `formModal` + `apiSubmit` for standard CRUD operations. Use `openModal` + custom render function for non-form content.
+- **Log / stream data**: Pages that fetch raw text or streams (e.g., `logs.js`) can use the model layer with a parameterized fetch. Register the model with a `fetch(signal, param)` that selects the right URL based on `param`, and call `modelFetch('logs', tabKey)`.

restart-services.sh

@@ -1,10 +1,21 @@
 #!/bin/bash
 
 systemctl restart nginx
-systemctl restart vacuum-wall
+sleep 1
 systemctl restart vacuum-walld
+sleep 1
+systemctl restart vacuum-wall
 
-systemctl status nginx
-systemctl status vacuum-wall
-systemctl status vacuum-walld
+# Verify services are running
+failed=0
+for svc in nginx vacuum-walld vacuum-wall; do
+  if ! systemctl is-active --quiet "$svc"; then
+    echo "ERROR: $svc is not running" >&2
+    failed=1
+  fi
+done
+
+if [ "$failed" -eq 1 ]; then
+  exit 1
+fi
 

webui/api/firewall.py

@@ -17,6 +17,7 @@ from daemon.iface import (
     GET_FIREWALL_INTERFACES,
     GET_FIREWALL_RICH_RULES,
     GET_FIREWALL_SERVICES,
+    GET_FIREWALL_STATE,
     GET_FIREWALL_ZONES,
     GET_FIREWALL_ZONES_INFO,
     PATCH_FIREWALL_CONFIG,
@@ -194,6 +195,28 @@ def config_pending_bp():
         return _error(str(exc), 500)
 
 
+# ---------------------------------------------------------------------------
+# State
+# ---------------------------------------------------------------------------
+
+
+@bp.route("/state", methods=["GET"])
+def get_state():
+    """Retrieve current firewall state from the state store.
+
+    Endpoint:
+        GET /api/firewall/state
+
+    Returns:
+        JSON with firewall state data or an error message.
+    """
+    try:
+        return _ok(get(GET_FIREWALL_STATE))
+    except RuntimeError as exc:
+        logger.error("Failed to get firewall state: %s", exc)
+        return _error(str(exc), 500)
+
+
 # ---------------------------------------------------------------------------
 # Zones
 # ---------------------------------------------------------------------------

webui/static/app.js

@@ -1,16 +1,16 @@
-import { h, render, Link, hComp, ToastContainer, connect, requestUpdate, reactive } from '/static/hoover/index.js?v=6';
+import { h, render, Link, hComp, ToastContainer, connect, apiFetch, modelRegister, modelFetch, reactive } from '/static/hoover/index.js?v=7';
 
-import DashboardPage from '/static/pages/dashboard.js?v=6';
-import InterfacesPage from '/static/pages/interfaces.js?v=6';
-import ZonesPage from '/static/pages/zones.js?v=6';
-import RulesPage from '/static/pages/rules.js?v=6';
-import NatPage from '/static/pages/nat.js?v=6';
-import DhcpPage from '/static/pages/dhcp.js?v=6';
-import ProxyPage from '/static/pages/proxy.js?v=6';
-import CertsPage from '/static/pages/certs.js?v=6';
-import WireguardPage from '/static/pages/wireguard.js?v=6';
-import LogsPage from '/static/pages/logs.js?v=6';
-import NotFoundPage from '/static/pages/notfound.js?v=6';
+import DashboardPage from '/static/pages/dashboard.js?v=7';
+import InterfacesPage from '/static/pages/interfaces.js?v=7';
+import ZonesPage from '/static/pages/zones.js?v=7';
+import RulesPage from '/static/pages/rules.js?v=7';
+import NatPage from '/static/pages/nat.js?v=7';
+import DhcpPage from '/static/pages/dhcp.js?v=7';
+import ProxyPage from '/static/pages/proxy.js?v=7';
+import CertsPage from '/static/pages/certs.js?v=7';
+import WireguardPage from '/static/pages/wireguard.js?v=7';
+import LogsPage from '/static/pages/logs.js?v=7';
+import NotFoundPage from '/static/pages/notfound.js?v=7';
 
 /* ── Navigation items ──────────────────────────────────────── */
 const Nav = [
@@ -26,6 +26,130 @@ const Nav = [
     { path: '/logs',       label: 'Logs'       },
 ];
 
+/* ── Model registration ────────────────────────────────────── */
+modelRegister('status', {
+    subsystem: 'status',
+    fetch: async () => {
+        const r = await apiFetch('/api/status/all');
+        if (!r.ok) throw new Error(r.error);
+        return r.data;
+    },
+});
+
+modelRegister('firewall', {
+    subsystem: 'firewall',
+    fetch: async () => {
+        const [cfg, zones, services, interfaces, state] = await Promise.allSettled([
+            apiFetch('/api/firewall/config'),
+            apiFetch('/api/firewall/zones'),
+            apiFetch('/api/firewall/services'),
+            apiFetch('/api/firewall/interfaces'),
+            apiFetch('/api/firewall/state'),
+        ]);
+        const result = {};
+        if (cfg.status === 'fulfilled' && cfg.value.ok) result.config = cfg.value.data || {};
+        else if (cfg.status === 'rejected' || !cfg.value.ok) throw new Error(cfg.status === 'rejected' ? (cfg.reason?.message || 'Failed') : (cfg.value.error || 'Failed'));
+        if (zones.status === 'fulfilled' && zones.value.ok) result.zones = zones.value.data || {};
+        else if (zones.status === 'rejected' || !zones.value.ok) throw new Error(zones.status === 'rejected' ? (zones.reason?.message || 'Failed') : (zones.value.error || 'Failed'));
+        if (services.status === 'fulfilled' && services.value.ok) result.services = services.value.data || [];
+        else if (services.status === 'rejected' || !services.value.ok) throw new Error(services.status === 'rejected' ? (services.reason?.message || 'Failed') : (services.value.error || 'Failed'));
+        if (interfaces.status === 'fulfilled' && interfaces.value.ok) result.interfaces = interfaces.value.data || [];
+        else if (interfaces.status === 'rejected' || !interfaces.value.ok) throw new Error(interfaces.status === 'rejected' ? (interfaces.reason?.message || 'Failed') : (interfaces.value.error || 'Failed'));
+        if (state.status === 'fulfilled' && state.value.ok) result.state = state.value.data || {};
+        return result;
+    },
+});
+
+modelRegister('network', {
+    subsystem: 'networkd',
+    fetch: async () => {
+        const r = await apiFetch('/api/network/interfaces');
+        if (!r.ok) throw new Error(r.error);
+        return r.data || { interfaces: {} };
+    },
+});
+
+modelRegister('dnsmasq', {
+    subsystem: 'dnsmasq',
+    fetch: async () => {
+        const [cfg, status, leases] = await Promise.allSettled([
+            apiFetch('/api/dhcp/config'),
+            apiFetch('/api/dhcp/status'),
+            apiFetch('/api/dhcp/leases'),
+        ]);
+        const result = {};
+        if (cfg.status === 'fulfilled' && cfg.value.ok) result.config = cfg.value.data || {};
+        else if (cfg.status === 'rejected' || !cfg.value.ok) throw new Error(cfg.status === 'rejected' ? (cfg.reason?.message || 'Failed') : (cfg.value.error || 'Failed'));
+        if (status.status === 'fulfilled' && status.value.ok) result.status = status.value.data || {};
+        else if (status.status === 'rejected' || !status.value.ok) throw new Error(status.status === 'rejected' ? (status.reason?.message || 'Failed') : (status.value.error || 'Failed'));
+        if (leases.status === 'fulfilled' && leases.value.ok) result.leases = leases.value.data || [];
+        else if (leases.status === 'rejected' || !leases.value.ok) throw new Error(leases.status === 'rejected' ? (leases.reason?.message || 'Failed') : (leases.value.error || 'Failed'));
+        return result;
+    },
+});
+
+modelRegister('nginx', {
+    subsystem: 'nginx',
+    fetch: async () => {
+        const r = await apiFetch('/api/proxy/domains');
+        if (!r.ok) throw new Error(r.error);
+        return r.data || [];
+    },
+});
+
+modelRegister('acme', {
+    subsystem: 'acme',
+    fetch: async () => {
+        const r = await apiFetch('/api/certs/list');
+        if (!r.ok) throw new Error(r.error);
+        return r.data || [];
+    },
+});
+
+modelRegister('wireguard', {
+    subsystem: 'wireguard',
+    fetch: async () => {
+        const [stR, pR, cfgR] = await Promise.allSettled([
+            apiFetch('/api/wireguard/status'),
+            apiFetch('/api/wireguard/peers'),
+            apiFetch('/api/wireguard/config'),
+        ]);
+        const result = {};
+        if (stR.status === 'fulfilled' && stR.value.ok) result.status = stR.value.data || {};
+        else if (stR.status === 'rejected' || !stR.value.ok) throw new Error(stR.status === 'rejected' ? (stR.reason?.message || 'Failed') : (stR.value.error || 'Failed'));
+        if (pR.status === 'fulfilled' && pR.value.ok) result.peers = pR.value.data || [];
+        else if (pR.status === 'rejected' || !pR.value.ok) throw new Error(pR.status === 'rejected' ? (pR.reason?.message || 'Failed') : (pR.value.error || 'Failed'));
+        if (cfgR.status === 'fulfilled' && cfgR.value.ok) result.config = cfgR.value.data || {};
+        return result;
+    },
+});
+
+const LOG_TABS = {
+    journal: '/api/logs/journal',
+    'nginx-access': '/api/logs/nginx/access',
+    'nginx-error': '/api/logs/nginx/error',
+    dnsmasq: '/api/logs/dnsmasq',
+    app: '/api/logs/app',
+};
+
+modelRegister('logs', {
+    subsystem: '*',
+    fetch: async (signal, tab) => {
+        const tabKey = tab || 'journal';
+        const url = LOG_TABS[tabKey];
+        if (!url) throw new Error('Unknown log tab: ' + tabKey);
+        const r = await apiFetch(url, { signal });
+        if (!r.ok) throw new Error(r.error);
+        return { data: (r.data || '').split('\n').filter(l => l.length > 0), tab: tabKey };
+    },
+});
+
+/* ── Initial fetch ─────────────────────────────────────────── */
+for (const name of ['status', 'firewall', 'network', 'dnsmasq', 'nginx', 'wireguard', 'acme']) {
+    modelFetch(name);
+}
+modelFetch('logs', 'journal');
+
 /* ── Page map ──────────────────────────────────────────────── */
 const Pages = {
     dashboard:   DashboardPage,

webui/static/hoover/api.js

@@ -6,7 +6,8 @@
  * ToastContainer component for rendering queued toasts.
  */
 
-import { h } from './vdom.js?v=6';
+import { h } from './vdom.js?v=7';
+import { modelFetch } from './model.js?v=7';
 
 /**
  * JSON-friendly fetch wrapper.
@@ -100,6 +101,8 @@ export function ToastContainer() {
 /**
  * Create an abort-checking function from an AbortController.
  *
+ * @deprecated Use model layer (`modelRegister` / `modelFetch`) for data
+ * fetching with abort handling and loading state management.
  * @param {AbortController} ac
  * @returns {function} () => boolean
  */
@@ -112,6 +115,8 @@ export function checkAbort(ac) {
  *
  * Sets loading=true before, loading=false after, tracks errors.
  *
+ * @deprecated Use model layer (`modelRegister` / `modelFetch`) for data
+ * fetching with abort handling and loading state management.
  * @param {object} state       - Reactive state object
  * @param {function} dataKey   - (s) => any, current data to compare for refresh detection
  * @param {function} fetchFn   - (state, signal, isAborted) => Promise
@@ -204,7 +209,7 @@ export async function poll(opts) {
  * @param {function} [opts.body]     - () => object, body builder
  * @param {function} [opts.validate] - (body) => string|null, validation function
  * @param {string} [opts.successMsg] - Success toast message
- * @param {function} [opts.reload]  - () => Promise, data reload function
+ * @param {string|string[]} [opts.refresh] - Model name(s) to refresh via modelFetch
  * @param {string} [opts.submitText] - Submit button text (default: 'Submit')
  * @returns {object[]} Array of action descriptors
  */
@@ -215,7 +220,7 @@ export function apiSubmit(opts) {
         body,
         validate,
         successMsg = 'Saved',
-        reload,
+        refresh,
         submitText = 'Submit',
         closeModal,
     } = opts;
@@ -235,7 +240,10 @@ export function apiSubmit(opts) {
                 if (res.ok) {
                     toast(successMsg, 'success');
                     if (closeModal) closeModal();
-                    if (reload) await reload();
+                    if (refresh) {
+                        const models = Array.isArray(refresh) ? refresh : [refresh];
+                        await Promise.all(models.map(m => modelFetch(m)));
+                    }
                 } else {
                     toast(res.error || 'Failed', 'error');
                 }

webui/static/hoover/component.js

@@ -4,72 +4,53 @@
  * Component wrapper: definePage, lifecycle hooks, state caching.
  *
  * definePage wraps a page definition into a renderer function compatible
- * with hoover's render engine. Handles reactive state creation, WS
- * subscription registration on mount, and cleanup on unmount.
+ * with hoover's render engine. Handles reactive state creation and
+ * lifecycle management. Data loading is handled by the model layer.
  *
  * Usage:
  *   export default definePage({
- *       init() { return { data: null, loading: true, error: null }; },
- *       subscribe: ['*'],          // WS topics to subscribe to
- *       async load(state) { ... }, // called on mount
+ *       init() { return { firewall: getModel('firewall') }; },
+ *       async load(state) { ... }, // optional, for one-time setup
  *       render(state) { return [vnodes],
  *   });
  */
 
-import { reactive } from './reactivity.js?v=6';
-import { h } from './vdom.js?v=6';
-import { _compExpandedCache } from './render.js?v=6';
+import { reactive } from './reactivity.js?v=7';
+import { h } from './vdom.js?v=7';
+import { _compExpandedCache } from './render.js?v=7';
 
-/** Registry of mounted components: key → { state, subscriptions, loadAbort, entry, isLoading } */
+/** Registry of mounted components: key → { state } */
 const _mounted = new Map();
 
-/** Check whether a state object belongs to a currently mounted component.
- * Used by websocket.js to skip auto-refresh for unmounted pages. */
-export function isComponentStateMounted(state) {
-    for (const entry of _mounted.values()) {
-        if (entry.state === state) return true;
-    }
-    return false;
-}
-
-/** Get the full mounted entry for a state object.
- * Used by websocket.js to abort in-flight loads before triggering a refresh. */
-export function getComponentEntry(state) {
-    for (const entry of _mounted.values()) {
-        if (entry.state === state) return entry;
-    }
-    return null;
-}
-
-/** External subscribe function from websocket.js.
- * Set via setSubscribeFn() when the websocket module initializes.
- */
-let _subscribeFn = null;
-
-export function setSubscribeFn(fn) {
-    _subscribeFn = fn;
-}
-
 /**
  * Define a page component.
  *
  * @param {object} def — Page definition
  * @param {function} def.init — Return initial state object
- * @param {string[]} [def.subscribe] — WS topics to subscribe to on mount
- * @param {function} def.load — Async function to load data into state
+ * @param {function} [def.load] — Optional one-time setup called on mount
  * @param {function} def.render — Render function that returns vnodes
  * @returns {object} — Component renderer compatible with h('#comp', ...)
  */
 export function definePage(def) {
-    const state = reactive(def.init());
+    let state = null;
+    let stateInitialized = false;
 
     const renderer = () => {
+        if (!stateInitialized) {
+            state = reactive(def.init());
+            stateInitialized = true;
+        }
         return def.render(state);
     };
 
     renderer._pageDef = {
-        state,
-        subscribe: def.subscribe || [],
+        get state() {
+            if (!stateInitialized) {
+                state = reactive(def.init());
+                stateInitialized = true;
+            }
+            return state;
+        },
         load: def.load || null,
         onUnmount: def.onUnmount || null,
     };
@@ -88,43 +69,18 @@ export function mountComponent(key, renderer) {
     let entry = _mounted.get(key);
 
     if (entry) {
-        // Re-mount: component already exists with its data and subscriptions.
-        // Don't abort or restart loads — that re-render was triggered by a
-        // state change (load completion, reactive update, etc). Let existing
-        // in-flight loads complete naturally. WS handles auto-refresh.
+        // Re-mount: component already exists with its state.
+        // Don't re-run load — that re-render was triggered by a reactive update.
         return;
-    } else {
-        // Fresh mount
-        entry = {
-            state: pd.state,
-            subscriptions: [],
-            loadAbort: null,
-            requestId: 0,
-        };
-        _mounted.set(key, entry);
     }
 
-    // Clear error on re-mount; load() decides loading vs refreshing
+    entry = { state: pd.state };
+    _mounted.set(key, entry);
+
     pd.state.error = null;
 
-    // Fire load with fresh AbortController
     if (pd.load) {
-        if (entry.isLoading) return;
-        const abortController = new AbortController();
-        entry.loadAbort = abortController;
-        entry.requestId++;
-        entry.isLoading = true;
-        Promise.resolve()
-            .then(() => pd.load(pd.state, abortController, entry))
-            .finally(() => { entry.isLoading = false; });
-    }
-
-    // Register WS subscriptions (only on fresh mount)
-    if (!entry.subscriptions.length && _subscribeFn && pd.subscribe.length) {
-        for (const topic of pd.subscribe) {
-            const unsub = _subscribeFn(renderer, topic, pd.load, pd.state);
-            if (unsub) entry.subscriptions.push(unsub);
-        }
+        Promise.resolve().then(() => pd.load(pd.state));
     }
 }
 
@@ -138,19 +94,6 @@ export function unmountComponent(key, renderer) {
 
     const pd = renderer._pageDef;
 
-    // Cancel load
-    if (entry.loadAbort) {
-        entry.loadAbort.abort();
-    }
-    // Invalidate any in-flight callbacks
-    entry.requestId++;
-
-    // Unsubscribe from WS
-    for (const unsub of entry.subscriptions) {
-        try { unsub(); } catch (_) {}
-    }
-
-    // Fire custom onUnmount
     if (pd.onUnmount) {
         try { pd.onUnmount(entry.state); } catch (_) {}
     }

webui/static/hoover/components/data.js

@@ -4,9 +4,10 @@
  * Data display components: Badge, StatusDot, Empty, Card.
  */
 
-import { h } from '../vdom.js?v=6';
-import { esc } from '../helpers.js?v=6';
-import { apiFetch, toast } from '../api.js?v=6';
+import { h } from '../vdom.js?v=7';
+import { esc } from '../helpers.js?v=7';
+import { apiFetch, toast } from '../api.js?v=7';
+import { modelFetch } from '../model.js?v=7';
 
 /**
  * Colored badge/span.
@@ -62,13 +63,13 @@ export function Card(props = {}) {
 }
 
 /**
- * A Remove button that confirms, deletes via API, toasts, and reloads.
+ * A Remove button that confirms, deletes via API, toasts, and refreshes models.
  *
  * @param {object} props
  * @param {string} props.url       - API DELETE URL
  * @param {string} props.message   - Confirmation prompt text
  * @param {string} [props.success] - Success toast message (default: 'Removed')
- * @param {function} [props.reload] - Function to call on success (e.g., load)
+ * @param {string|string[]} [props.refresh] - Model name(s) to refresh via modelFetch
  * @param {string} [props.label]   - Button text (default: 'Remove')
  * @param {object} [props.body]    - Optional JSON body to send with DELETE
  */
@@ -81,7 +82,10 @@ export function ConfirmDelete(props = {}) {
             const r = await apiFetch(props.url, opts);
             if (r.ok) {
                 toast(props.success || 'Removed', 'success');
-                if (props.reload) await props.reload();
+                if (props.refresh) {
+                    const names = Array.isArray(props.refresh) ? props.refresh : [props.refresh];
+                    names.forEach(n => modelFetch(n));
+                }
             } else {
                 toast(r.error || 'Failed', 'error');
             }
@@ -90,7 +94,7 @@ export function ConfirmDelete(props = {}) {
 
 /**
  * An action button that POSTs to an API endpoint, toasts on result,
- * and optionally reloads state. Supports toggle labels for on/off buttons.
+ * and optionally refreshes models. Supports toggle labels for on/off buttons.
  *
  * @param {object} props
  * @param {string} props.url            - API URL
@@ -102,7 +106,7 @@ export function ConfirmDelete(props = {}) {
  * @param {boolean} [props.condition]   - Toggle condition for labelOn/labelOff
  * @param {string} [props.successMsg]   - Success toast message
  * @param {string} [props.errorType]    - Toast type for errors (default: 'error')
- * @param {function} [props.reload]     - () => Promise, called on success
+ * @param {string|string[]} [props.refresh] - Model name(s) to refresh via modelFetch
  * @param {string} [props.cls]          - Button CSS classes (default: 'btn btn-outline')
  * @param {boolean} [props.disabled]    - Disabled state
  */
@@ -122,7 +126,10 @@ export function ActionButton(props = {}) {
             const resp = await apiFetch(props.url, opts);
             if (resp.ok) {
                 if (props.successMsg) toast(props.successMsg, 'success');
-                if (props.reload) await props.reload();
+                if (props.refresh) {
+                    const names = Array.isArray(props.refresh) ? props.refresh : [props.refresh];
+                    names.forEach(n => modelFetch(n));
+                }
             } else {
                 toast(resp.error || 'Failed', props.errorType || 'error');
             }
@@ -249,7 +256,7 @@ export function ServiceStatus(props = {}) {
  * @param {string} props.removeUrl         - API DELETE URL
  * @param {string} props.removeMessage     - Confirmation prompt text
  * @param {string} [props.removeSuccess]   - Success toast message
- * @param {function} [props.removeReload]  - Reload function
+ * @param {string|string[]} [props.removeRefresh] - Model name(s) to refresh
  * @param {string} [props.removeLabel]     - Delete button label (default: 'Remove')
  * @param {object} [props.removeBody]      - Optional JSON body to send with DELETE
  * @param {string} [props.editCls]         - Override classes for edit button (default: 'btn btn-sm btn-outline')
@@ -265,7 +272,7 @@ export function ActionCell(props = {}) {
             url: props.removeUrl,
             message: props.removeMessage,
             success: props.removeSuccess,
-            reload: props.removeReload,
+            refresh: props.removeRefresh,
             label: props.removeLabel || 'Remove',
             body: props.removeBody,
         }),

webui/static/hoover/components/layout.js

@@ -4,8 +4,9 @@
  * Layout components: PageHeader, Tabs, SectionTitle, DataTableSection, ActionGroup.
  */
 
-import { h } from '../vdom.js?v=6';
-import { Table } from './data.js?v=6';
+import { h } from '../vdom.js?v=7';
+import { Table } from './data.js?v=7';
+import { collectLoadingModels } from '../model.js?v=7';
 
 /**
  * Page header with title, optional subtitle, and action buttons.
@@ -25,14 +26,17 @@ export function PageHeader(props = {}) {
     );
 }
 
-/**
+ /**
  * Handle loading/error/no-data states and return early if applicable.
  * Returns null when data is ready for the page to render its content.
  *
+ * Accepts a model object (with loading/refreshing/error/data properties) as
+ * the `data` parameter to check the model's data property directly.
+ *
  * @param {object} state        - Page state with loading/error flags
  * @param {string} title        - Page header title
  * @param {string} [subtitle]   - Page header subtitle
- * @param {*} [data]            - Data presence check for "no data" state
+ * @param {*} [data]            - Data to check (or model object with .data property)
  * @returns {VNode[]|null}
  */
 export function renderGuard(state, title, subtitle, data) {
@@ -54,7 +58,7 @@ export function renderGuard(state, title, subtitle, data) {
             ),
         ];
     }
-    if ((data === undefined || data === null) && !state.loading) {
+    if (isEmpty(data) && !state.loading) {
         return [
             PageHeader({ title, subtitle }),
             h('div', { class: 'card', key: 'no-data' },
@@ -65,6 +69,33 @@ export function renderGuard(state, title, subtitle, data) {
     return null;
 }
 
+/**
+ * Convenience wrapper for pages consuming multiple models.
+ * Internally calls collectLoadingModels then delegates to renderGuard.
+ *
+ * @param {string}   title     - Page header title
+ * @param {string}   [subtitle] - Page header subtitle
+ * @param {...object} models   - Model objects to combine
+ * @returns {VNode[]|null}
+ */
+export function renderGuardMulti(title, subtitle, ...models) {
+    const combined = collectLoadingModels(...models);
+    return renderGuard(combined, title, subtitle);
+}
+
+/**
+ * Check if a value is "empty" for renderGuard's no-data check.
+ * @param {*} data
+ * @returns {boolean}
+ */
+function isEmpty(data) {
+    if (data === null || data === undefined || data === '') return true;
+    if (Array.isArray(data)) return data.length === 0;
+    if (typeof data === 'object') return Object.keys(data).length === 0;
+    if (typeof data === 'number') return false;
+    return !data;
+}
+
 /**
  * Tab bar component. Writes to state[prop] on tab click.
  * The caller is responsible for rendering tab body content.

webui/static/hoover/components/modal.js

@@ -6,9 +6,9 @@
  * avoid fighting with the main render cycle.
  */
 
-import { esc } from '../helpers.js?v=6';
-import { att_esc } from '../helpers.js?v=6';
-import { apiSubmit } from '../api.js?v=6';
+import { esc } from '../helpers.js?v=7';
+import { att_esc } from '../helpers.js?v=7';
+import { apiSubmit } from '../api.js?v=7';
 
 const _modalQueue = [];
 
@@ -114,7 +114,7 @@ export function formModal(inner, title, fields, actions) {
  * @param {string[]} props.selected  - Currently selected values
  * @param {string} props.fieldKey    - JSON key for the field
  * @param {string} [props.successMsg] - Success toast message
- * @param {function} [props.reload]  - () => Promise, called on success
+ * @param {string|string[]} [props.refresh] - Model name(s) to refresh via modelFetch
  * @returns {function} () => void, calls openModal
  */
 export function MultiSelectModal(props = {}) {
@@ -138,7 +138,7 @@ export function MultiSelectModal(props = {}) {
                                 .map(o => o.value),
                         }),
                         successMsg: props.successMsg || 'Updated',
-                        reload: props.reload,
+                        refresh: props.refresh,
                         closeModal: () => closeModal(),
                     }),
                 ],
@@ -160,7 +160,7 @@ export function MultiSelectModal(props = {}) {
  * @param {function} [props.submit.body]       - (data) => object
  * @param {function} [props.submit.validate]   - (body) => string|null
  * @param {string|function} [props.submit.successMsg] - Toast message or (data) => string
- * @param {function} [props.reload]            - (data) => Promise, called on success with the data argument
+ * @param {string|string[]} [props.refresh]    - Model name(s) to refresh via modelFetch
  * @param {function} [props.handler]           - Custom submit handler override (bypasses apiSubmit)
  * @param {string} [props.submitLabel]         - Submit button label (default: 'Submit')
  * @returns {function} (data) => void, calls openModal
@@ -194,7 +194,7 @@ export function QuickModal(props = {}) {
                         successMsg: typeof props.submit.successMsg === 'function'
                             ? props.submit.successMsg(data)
                             : (props.submit.successMsg || 'Done'),
-                        reload: props.reload ? () => props.reload(data) : undefined,
+                        refresh: props.refresh || undefined,
                         closeModal: () => closeModal(),
                     }),
                 ];

webui/static/hoover/components/toast.js

@@ -5,8 +5,8 @@
  * Uses the toast/dismissToast state from api.js.
  */
 
-import { h } from '../vdom.js?v=6';
-import { _toasts, dismissToast } from '../api.js?v=6';
+import { h } from '../vdom.js?v=7';
+import { _toasts, dismissToast } from '../api.js?v=7';
 
 /**
  * Render all pending toast notifications.

webui/static/hoover/index.js

@@ -5,37 +5,40 @@
  */
 
 /* ── Reactivity ──────────────────────────────────────────────── */
-export { reactive, requestUpdate } from './reactivity.js?v=6';
+export { reactive, requestUpdate } from './reactivity.js?v=7';
 
 /* ── VDOM ────────────────────────────────────────────────────── */
-export { h } from './vdom.js?v=6';
+export { h } from './vdom.js?v=7';
 
 /* ── Render ──────────────────────────────────────────────────── */
-export { render } from './render.js?v=6';
+export { render } from './render.js?v=7';
 
 /* ── Component ───────────────────────────────────────────────── */
-export { definePage, hComp } from './component.js?v=6';
+export { definePage, hComp } from './component.js?v=7';
 
 /* ── Router ──────────────────────────────────────────────────── */
-export { createRouter, Link } from './router.js?v=6';
+export { createRouter, Link } from './router.js?v=7';
 
 /* ── WebSocket ───────────────────────────────────────────────── */
-export { connect, onMessage } from './websocket.js?v=6';
+export { connect, onMessage } from './websocket.js?v=7';
 
 /* ── API & Toast ─────────────────────────────────────────────── */
-export { apiFetch, toast, dismissToast, apiSubmit, refactorLoad, checkAbort, poll } from './api.js?v=6';
+export { apiFetch, toast, dismissToast, apiSubmit, checkAbort, poll, refactorLoad } from './api.js?v=7';
+
+/* ── Model ───────────────────────────────────────────────────── */
+export { modelRegister, getModel, modelFetch, collectLoadingModels } from './model.js?v=7';
 
 /* ── Helpers ─────────────────────────────────────────────────── */
-export { esc, att_esc, enc, $val, parseZones, downloadBlob } from './helpers.js?v=6';
+export { esc, att_esc, enc, $val, parseZones, downloadBlob } from './helpers.js?v=7';
 
 /* ── UI Components: Layout ───────────────────────────────────── */
-export { PageHeader, renderGuard, Tabs, SectionTitle, ActionGroup, DataTableSection } from './components/layout.js?v=6';
+export { PageHeader, renderGuard, renderGuardMulti, Tabs, SectionTitle, ActionGroup, DataTableSection } from './components/layout.js?v=7';
 
 /* ── UI Components: Data ─────────────────────────────────────── */
-export { Badge, StatusDot, Empty, Card, ConfirmDelete, Table, ActionButton, certStatusBadge, serviceStatusBadge, StatCard, StatusText, ServiceStatus, ActionCell, MonoText, ZoneSelect } from './components/data.js?v=6';
+export { Badge, StatusDot, Empty, Card, ConfirmDelete, Table, ActionButton, certStatusBadge, serviceStatusBadge, StatCard, StatusText, ServiceStatus, ActionCell, MonoText, ZoneSelect } from './components/data.js?v=7';
 
 /* ── UI Components: Modal ────────────────────────────────────── */
-export { openModal, closeModal, closeAllModals, formModal, MultiSelectModal, QuickModal } from './components/modal.js?v=6';
+export { openModal, closeModal, closeAllModals, formModal, MultiSelectModal, QuickModal } from './components/modal.js?v=7';
 
 /* ── UI Components: Toast ────────────────────────────────────── */
-export { ToastContainer } from './components/toast.js?v=6';
+export { ToastContainer } from './components/toast.js?v=7';

webui/static/hoover/model.js

@@ -0,0 +1,138 @@
+/**
+ * Hoover — model.js
+ *
+ * Central reactive store for subsystem models. Each subsystem gets one
+ * reactive model with { data, loading, refreshing, error }. Hoover handles
+ * fetching, WS invalidation, loading states, and abort management.
+ *
+ * API:
+ *   modelRegister(name, definition) — register at app bootstrap
+ *   getModel(name)                  — return reactive model object
+ *   modelFetch(name, signal?, param?) — trigger fetch with in-flight dedup
+ *   refreshByTopic(topic)           — WS callback: refresh all models matching topic
+ *   collectLoadingModels(...models) — combine loading/refreshing/error
+ */
+
+import { reactive } from './reactivity.js?v=7';
+
+/** Registered models: name → { model, subsystem, fetch } */
+const _models = new Map();
+
+/** In-flight fetch promises for dedup: name → Promise */
+const _fetchPromises = new Map();
+
+/**
+ * Register a subsystem model.
+ *
+ * @param {string} name - Model name (e.g. 'firewall', 'dnsmasq')
+ * @param {object} definition
+ * @param {string} definition.subsystem - WS topic to listen for ('*' = all)
+ * @param {function} definition.fetch - async (signal?, param?) => Promise<data>
+ * @param {any} [definition.defaultData] - Initial data value (default: null)
+ * @returns {object} reactive model
+ */
+export function modelRegister(name, definition) {
+    const model = reactive({
+        data: definition.defaultData ?? null,
+        loading: true,
+        refreshing: false,
+        error: null,
+    });
+
+    _models.set(name, {
+        model,
+        subsystem: definition.subsystem,
+        fetch: definition.fetch,
+    });
+
+    return model;
+}
+
+/**
+ * Get a reactive model by name. Throws if not registered.
+ * @param {string} name
+ * @returns {object} reactive model
+ */
+export function getModel(name) {
+    const entry = _models.get(name);
+    if (!entry) throw new Error('Model not registered: ' + name);
+    return entry.model;
+}
+
+/** Build dedup key from model name and optional param. */
+function _dedupKey(name, param) {
+    return param !== undefined ? `${name}:${String(param)}` : name;
+}
+
+/**
+ * Trigger a fetch for the named model.
+ *
+ * In-flight dedup: if a fetch is already running, returns the existing
+ * promise. Models never abort in-progress fetches since other consumers
+ * may still need the data.
+ *
+ * @param {string} name - Model name
+ * @param {AbortSignal|*} [signalOrParam] - AbortSignal (backward compat) or param
+ * @param {AbortSignal} [signal] - AbortSignal when a param was provided
+ */
+export function modelFetch(name, signalOrParam, signal) {
+    const entry = _models.get(name);
+    if (!entry) return;
+
+    const isSignal = signalOrParam instanceof AbortSignal || signalOrParam === undefined;
+    const param = isSignal ? undefined : signalOrParam;
+    const actualSignal = isSignal ? signalOrParam : signal;
+
+    const model = entry.model;
+    const isInitial = model.loading && model.data === null;
+    const key = _dedupKey(name, param);
+
+    if (_fetchPromises.has(key)) return _fetchPromises.get(key);
+
+    if (isInitial) model.loading = true;
+    else model.refreshing = true;
+    model.error = null;
+
+    const promise = (async () => {
+        try {
+            const data = await entry.fetch(actualSignal, param);
+            model.data = data;
+        } catch (e) {
+            model.error = e.message || 'Fetch failed';
+        } finally {
+            model.loading = false;
+            model.refreshing = false;
+        }
+    })();
+
+    _fetchPromises.set(key, promise);
+    promise.finally(() => _fetchPromises.delete(key));
+    return promise;
+}
+
+/**
+ * Refresh all models whose subsystem topic matches the given topic.
+ * Topic '*' matches every model. Model subsystem '*' matches every topic.
+ */
+export function refreshByTopic(topic) {
+    for (const [name, entry] of _models) {
+        if (entry.subsystem === '*') {
+            modelFetch(name);
+        } else if (entry.subsystem === topic || topic === '*') {
+            modelFetch(name);
+        }
+    }
+}
+
+/**
+ * Combine loading/refreshing/error from multiple models.
+ * @param {...object} models
+ * @returns {{loading: boolean, refreshing: boolean, error: string|null}}
+ */
+export function collectLoadingModels(...models) {
+    return {
+        loading: models.some(m => m.loading),
+        refreshing: models.some(m => m.refreshing),
+        error: models.find(m => m.error)?.error ?? null,
+    };
+}

webui/static/hoover/render.js

@@ -5,12 +5,12 @@
  * batched re-render loop integration with reactivity.js.
  */
 
-import { requestUpdate, setCommitFn } from './reactivity.js?v=6';
+import { requestUpdate, setCommitFn } from './reactivity.js?v=7';
 import {
     _vnodeDom, createDom, getDom, patchNode, sweepDom,
     setMountFn, setUnmountFn,
-} from './vdom.js?v=6';
-import { mountComponent, unmountComponent } from './component.js?v=6';
+} from './vdom.js?v=7';
+import { mountComponent, unmountComponent } from './component.js?v=7';
 
 /** Container → previous root vnodes */
 export const _renderSlots = new Map();

webui/static/hoover/router.js

@@ -5,8 +5,8 @@
  * navigation).  Link component for client-side navigation.
  */
 
-import { reactive } from './reactivity.js?v=6';
-import { h } from './vdom.js?v=6';
+import { reactive } from './reactivity.js?v=7';
+import { h } from './vdom.js?v=7';
 
 /**
  * Hash-based router.

webui/static/hoover/websocket.js

@@ -1,19 +1,19 @@
 /**
  * Hoover — websocket.js
  *
- * WebSocket connection manager with auto-reconnect, subscribe/unsubscribe
- * per component per topic, and version-track messages.
- *
- * The _wsSubs Map stores entries keyed by renderer function so that
- * auto-refresh messages from the backend can trigger page reloads.
+ * WebSocket connection manager with auto-reconnect. WS messages are routed
+ * to model-based refresh and direct onMessage handlers.
+ * Page-level subscribe/unsubscribe is replaced by the model layer.
  */
 
-import { setSubscribeFn, isComponentStateMounted, getComponentEntry } from './component.js?v=6';
+import { refreshByTopic } from './model.js?v=7';
 
-const _wsSubs = new Map();
 let _wsConn = null;
 let _wsReconnectMs = 0;
 
+/** Direct onMessage handlers: { topics, handler, unsubscribed }[] */
+const _directHandlers = [];
+
 /**
  * Build the WebSocket URL.  Supports an override via `window.__WS_URL__`
  * (useful for proxy setups).  Falls back to port 9091 when the current
@@ -52,57 +52,13 @@ function _wsConnect() {
     };
 }
 
-/** Per-state debounce timer (shared across all subscriptions for that state). */
-const _wsDebounceTimers = new Map();
-
 /**
- * Fire the debounced load for a component state.
- *
- * Only one load fires per state regardless of how many subscriptions
- * matched.  Passes the mount entry so refactorLoad can toggle
- * loading / refreshing flags correctly.
- */
-function debouncedLoad(state, entry) {
-    if (!isComponentStateMounted(state)) return;
-    // Abort any in-flight load for this component
-    if (entry && entry.loadAbort) entry.loadAbort.abort();
-    const ac = new AbortController();
-    const firstSub = [..._wsSubs.values()]
-        .find(s => !s.unsubscribed && s.state === state);
-    if (firstSub) {
-        firstSub.loadFn(state, ac, entry);
-    }
-}
-
-/**
- * Debounce helper: coalesces all matching subscriptions for the same
- * component state into a single reload, keyed by state object.
- */
-function scheduleReload(state) {
-    if (_wsDebounceTimers.has(state)) {
-        clearTimeout(_wsDebounceTimers.get(state));
-    }
-    _wsDebounceTimers.set(state, setTimeout(() => {
-        _wsDebounceTimers.delete(state);
-        const entry = getComponentEntry(state);
-        debouncedLoad(state, entry);
-    }, 300));
-}
-
-/**
- * Route an incoming WS message to subscribed components.
+ * Route an incoming WS message to model refresh and direct handlers.
  *
  * Expected message shapes:
  *   { type: 'versions', updated: ['firewall', 'dnsmasq', …] }
  *   { type: 'notify',  topic: 'firewall' }
  *   { type: 'status',  topic: 'firewall', … }
- *
- * Components subscribed to wildcard ('*') match every topic.
- *
- * Uses per-component-state debouncing (300ms) to prevent a burst of WS
- * messages or multiple matching topics from triggering overlapping
- * loads.  All subscriptions that share the same state object are
- * coalesced into a single debounced reload.
  */
 function handleMessage(msg) {
     const topics = [];
@@ -115,88 +71,39 @@ function handleMessage(msg) {
         topics.push(msg.topic || '*');
     }
 
-    // Track which states have already been scheduled to avoid
-    // double-scheduling when multiple subscriptions of the same
-    // component match the same message.
-    const scheduled = new Set();
+    // Refresh models for each topic
+    for (const topic of topics) {
+        refreshByTopic(topic);
+    }
 
-    for (const s of _wsSubs.values()) {
-        if (s.unsubscribed || !isComponentStateMounted(s.state)) continue;
-
-        const matched = s.topic === '*' || topics.some(t => t === s.topic || t === '*');
-        if (!matched) continue;
-
-        if (scheduled.has(s.state)) continue;
-        scheduled.add(s.state);
-        scheduleReload(s.state);
+    // Notify direct onMessage handlers
+    for (const h of _directHandlers) {
+        if (h.unsubscribed) continue;
+        if (topics.some(t => h.topics.includes(t) || h.topics.includes('*'))) {
+            try { h.handler(msg); } catch (_) {}
+        }
     }
 }
 
-/**
- * Subscribe a component to WS topics.
- *
- * Called by component.js on mount.  Returns an unsubscribe function
- * called by component.js on unmount.
- *
- * Key is `componentFn + ':' + topic` so a component can subscribe to
- * multiple topics without overwriting previous subscriptions.
- *
- * @param {function} componentFn – The page renderer function (used as map key)
- * @param {string} topic         – Topic to listen for ('*' = all)
- * @param {function} loadFn      – Function to call when topic updates
- * @param {object} state         – Reactive state passed to loadFn
- * @returns {function} unsubscribe
- */
-function subscribe(componentFn, topic, loadFn, state) {
-    const key = componentFn + ':' + topic;
-    const entry = { componentFn, topic, loadFn, state, unsubscribed: false };
-    _wsSubs.set(key, entry);
-
-    return () => {
-        entry.unsubscribed = true;
-        // Clear per-state debounce timer if this was the last active
-        // subscription for that state
-        const remaining = [..._wsSubs.values()]
-            .some(s => !s.unsubscribed && s.state === entry.state);
-        if (!remaining && _wsDebounceTimers.has(entry.state)) {
-            clearTimeout(_wsDebounceTimers.get(entry.state));
-            _wsDebounceTimers.delete(entry.state);
-        }
-        _wsSubs.delete(key);
-    };
-}
-
-/** Register the subscribe function with component.js and kick off connection. */
-setSubscribeFn(subscribe);
-
-/** Start the WebSocket connection. */
-export function connect() {
-    _wsConnect();
-}
-
 /**
  * Public subscribe API for direct one-off usage (e.g. from page code).
+ * Handler receives the raw parsed message when a matching topic arrives.
  * @param {string|string[]} topics
  * @param {function} handler
  * @returns {function} unsubscribe
  */
 export function onMessage(topics, handler) {
     const tArray = Array.isArray(topics) ? topics : [topics];
-    const fns = [];
-    for (const t of tArray) {
-        const entry = {
-            componentFn: handler, topic: t, loadFn: handler, state: {},
-            unsubscribed: false
-        };
-        _wsSubs.set(handler + ':' + t, entry);
-        fns.push(() => {
-            entry.unsubscribed = true;
-            if (_wsDebounceTimers.has(entry.state)) {
-                clearTimeout(_wsDebounceTimers.get(entry.state));
-                _wsDebounceTimers.delete(entry.state);
-            }
-            _wsSubs.delete(handler + ':' + t);
-        });
-    }
-    return () => fns.forEach(f => f());
+    const entry = { topics: tArray, handler, unsubscribed: false };
+    _directHandlers.push(entry);
+    return () => {
+        entry.unsubscribed = true;
+        const idx = _directHandlers.indexOf(entry);
+        if (idx !== -1) _directHandlers.splice(idx, 1);
+    };
+}
+
+/** Start the WebSocket connection. */
+export function connect() {
+    _wsConnect();
 }

webui/static/index.html

@@ -14,6 +14,6 @@
     </div>
   </div>
   <script>window.__WS_URL__ = "__WS_URL_PLACEHOLDER__"</script>
-  <script type="module" src="/static/app.js?v=6"></script>
+  <script type="module" src="/static/app.js?v=7"></script>
 </body>
 </html>

webui/static/pages/certs.js

@@ -1,4 +1,4 @@
-import { h, PageHeader, Badge, Empty, Table, renderGuard, esc, enc, $val, apiFetch, toast, openModal, closeModal, formModal, definePage, refactorLoad, ActionCell, certStatusBadge, poll } from '/static/hoover/index.js?v=6';
+import { h, PageHeader, Empty, Table, renderGuard, esc, enc, $val, apiFetch, toast, openModal, closeModal, formModal, definePage, getModel, modelFetch, ActionCell, certStatusBadge, poll } from '/static/hoover/index.js?v=7';
 
 function issueCertModal(state) {
     openModal((inner, idx) => {
@@ -40,7 +40,7 @@ async function pollCertIssue(rid, state) {
         onErrorKey: (d) => d.status === 'failed',
         onComplete: (d) => {
             toast('Certificate issued for ' + (d.domain || rid), 'success');
-            load(state);
+            modelFetch('acme');
         },
         onError: (d) => {
             toast('Issuance failed: ' + (d?.error || 'unknown'), 'error');
@@ -48,30 +48,17 @@ async function pollCertIssue(rid, state) {
     });
 }
 
-async function load(state, abortController, entry) {
-    await refactorLoad(state,
-        s => s.certs?.length,
-        async (s, sig, isAborted) => {
-            const r = await apiFetch('/api/certs/list', { signal: sig });
-            if (isAborted()) return;
-            if (r.ok) s.certs = r.data || [];
-            else s.error = r.error;
-        },
-        { entry, abortController },
-    );
-}
-
 export default definePage({
     init() {
-        return { certs: [] };
+        return {
+            acme: getModel('acme'),
+        };
     },
-    subscribe: ['acme'],
-    load,
     render(state) {
-        const guard = renderGuard(state, 'Certificates', 'ACME certificate management', state.certs);
+        const guard = renderGuard(state.acme, 'Certificates', 'ACME certificate management', state.acme.data);
         if (guard) return guard;
 
-        const rows = state.certs.map(c => {
+        const rows = (state.acme.data || []).map(c => {
             const badge = certStatusBadge({ expired: c.expired, daysRemaining: c.days_remaining });
 
             return h('tr', { key: c.domain },
@@ -89,7 +76,7 @@ export default definePage({
                     removeUrl: '/api/certs/' + enc(c.domain),
                     removeMessage: 'Remove certificate for ' + c.domain + '?',
                     removeSuccess: 'Certificate removed',
-                    removeReload: () => load(state),
+                    removeRefresh: 'acme',
                 }),
             );
         });
@@ -109,4 +96,4 @@ export default definePage({
                 : Empty({ text: 'No certificates found. Issue a certificate to get started.' }),
         ];
     },
-});
+});

webui/static/pages/dashboard.js

@@ -1,27 +1,16 @@
-import { h, PageHeader, apiFetch, definePage, renderGuard, refactorLoad, ServiceStatus, StatCard } from '/static/hoover/index.js?v=6';
+import { h, PageHeader, definePage, getModel, renderGuard, ServiceStatus, StatCard } from '/static/hoover/index.js?v=7';
 
 export default definePage({
     init() {
-        return { data: null };
-    },
-    subscribe: ['firewall', 'dnsmasq', 'wireguard', 'acme', 'networkd'],
-    async load(state, abortController, entry) {
-        await refactorLoad(state,
-            s => s.data,
-            async (s, sig, isAborted) => {
-                const res = await apiFetch('/api/status/all', { signal: sig });
-                if (isAborted()) return;
-                if (res.ok) s.data = res.data;
-                else s.error = res.error;
-            },
-            { entry, abortController },
-        );
+        return {
+            status: getModel('status'),
+        };
     },
     render(state) {
-        const guard = renderGuard(state, 'Dashboard', 'System overview', state.data);
+        const guard = renderGuard(state.status, 'Dashboard', 'System overview', state.status.data);
         if (guard) return guard;
 
-        const d = state.data;
+        const d = state.status.data;
         const fwZones = (d.firewall?.zones) || {};
         const net = d.net || {};
         const nCount = Object.keys(net).length;
@@ -69,4 +58,4 @@ export default definePage({
             ),
         ];
     },
-});
+});

webui/static/pages/dhcp.js

@@ -1,4 +1,4 @@
-import { h, PageHeader, Badge, ConfirmDelete, Tabs, Table, ServiceStatus, renderGuard, esc, enc, $val, apiFetch, toast, definePage, refactorLoad, ActionButton, ActionGroup, QuickModal } from '/static/hoover/index.js?v=6';
+import { h, PageHeader, Badge, ConfirmDelete, Tabs, Table, ServiceStatus, renderGuard, esc, enc, $val, apiFetch, toast, definePage, getModel, modelFetch, ActionButton, ActionGroup, QuickModal } from '/static/hoover/index.js?v=7';
 
 const addRange = QuickModal({
     title: 'Add DHCP Range',
@@ -19,7 +19,7 @@ const addRange = QuickModal({
         validate: (b) => !b.start || !b.end ? 'Start and end are required' : null,
         successMsg: 'Range added',
     },
-    reload: (s) => load(s),
+    refresh: 'dnsmasq',
 });
 
 const addLease = QuickModal({
@@ -39,7 +39,7 @@ const addLease = QuickModal({
         validate: (b) => !b.mac || !b.ip ? 'MAC and IP are required' : null,
         successMsg: 'Lease added',
     },
-    reload: (s) => load(s),
+    refresh: 'dnsmasq',
 });
 
 const addDns = QuickModal({
@@ -54,55 +54,27 @@ const addDns = QuickModal({
         validate: (b) => !b.name || !b.address ? 'Name and address are required' : null,
         successMsg: 'DNS record added',
     },
-    reload: (s) => load(s),
+    refresh: 'dnsmasq',
 });
 
-async function load(state, abortController, entry) {
-    await refactorLoad(state,
-        s => Object.keys(s.config || {}).length,
-        async (s, sig, isAborted) => {
-            const [cfgR, stR, lsR] = await Promise.allSettled([
-                apiFetch('/api/dhcp/config', { signal: sig }),
-                apiFetch('/api/dhcp/status', { signal: sig }),
-                apiFetch('/api/dhcp/leases', { signal: sig }),
-            ]);
-            if (isAborted()) return;
-            const errors = [];
-            if (cfgR.status === 'rejected') errors.push(cfgR.reason?.message || 'Failed');
-            else if (!cfgR.value.ok) errors.push(cfgR.value.error || 'Failed');
-            if (stR.status === 'rejected') errors.push(stR.reason?.message || 'Failed');
-            else if (!stR.value.ok) errors.push(stR.value.error || 'Failed');
-            if (lsR.status === 'rejected') errors.push(lsR.reason?.message || 'Failed');
-            else if (!lsR.value.ok) errors.push(lsR.value.error || 'Failed');
-            if (errors.length) {
-                s.error = errors[0];
-                return;
-            }
-            s.config = cfgR.value.data || {};
-            s.status = stR.value.data || {};
-            s.leases = lsR.value.data || [];
-        },
-        { entry, abortController },
-    );
-}
-
 export default definePage({
     init() {
-        return { config: {}, status: {}, leases: [], activeTab: 'ranges' };
+        return {
+            dnsmasq: getModel('dnsmasq'),
+            activeTab: 'ranges',
+        };
     },
-    subscribe: ['dnsmasq'],
-    load,
     render(state) {
-        const guard = renderGuard(state, 'DHCP & DNS', null, state.leases);
+        const guard = renderGuard(state.dnsmasq, 'DHCP & DNS', 'Dnsmasq management', state.dnsmasq.data);
         if (guard) return guard;
 
-        const cfg = state.config || {};
+        const cfg = state.dnsmasq.data?.config || {};
         const ranges = cfg.ranges || [];
         const staticLeases = cfg.static_leases || [];
         const dnsRecords = cfg.dns_records || [];
-        const statusUp = state.status || {};
+        const status = state.dnsmasq.data?.status || {};
 
-        const rangesRows = ranges.map((r, i) => h('tr', { key: (r.interface || '_g') + '-' + r.start + '-' + r.end },
+        const rangesRows = ranges.map((r) => h('tr', { key: (r.interface || '_g') + '-' + r.start + '-' + r.end },
             h('td', null, r.interface || '(global)'),
             h('td', null, esc(r.start)),
             h('td', null, esc(r.end)),
@@ -113,12 +85,12 @@ export default definePage({
                     message: 'Remove range ' + r.start + ' - ' + r.end + '?',
                     body: { interface: r.interface || '', start: r.start, end: r.end },
                     success: 'Range removed',
-                    reload: () => load(state),
+                    refresh: 'dnsmasq',
                 }),
             ),
         ));
 
-        const leaseRows = staticLeases.map((l, i) => h('tr', { key: l.mac },
+        const leaseRows = staticLeases.map((l) => h('tr', { key: l.mac },
             h('td', null, esc(l.mac)),
             h('td', null, esc(l.ip)),
             h('td', null, l.hostname || '-'),
@@ -127,12 +99,12 @@ export default definePage({
                     url: '/api/dhcp/static-lease/' + enc(l.mac),
                     message: 'Remove lease ' + l.mac + '?',
                     success: 'Lease removed',
-                    reload: () => load(state),
+                    refresh: 'dnsmasq',
                 }),
             ),
         ));
 
-        const dnsRows = dnsRecords.map((rec, i) => h('tr', { key: rec.name },
+        const dnsRows = dnsRecords.map((rec) => h('tr', { key: rec.name },
             h('td', null, h('strong', null, esc(rec.name || 'unnamed'))),
             h('td', { class: 'text-sm' }, esc(rec.address || '-')),
             h('td', null,
@@ -140,7 +112,7 @@ export default definePage({
                     url: '/api/dhcp/dns-record/' + enc(rec.name || ''),
                     message: 'Remove DNS record ' + (rec.name || 'unnamed') + '?',
                     success: 'Record removed',
-                    reload: () => load(state),
+                    refresh: 'dnsmasq',
                 }),
             ),
         ));
@@ -154,13 +126,13 @@ export default definePage({
                 url: '/api/dhcp/apply',
                 successMsg: 'dnsmasq applied',
                 label: 'Apply',
-                reload: () => load(state),
+                refresh: 'dnsmasq',
             }),
         );
 
         return [
             PageHeader({ title: 'DHCP & DNS', subtitle: 'Dnsmasq management', actions }),
-            ServiceStatus({ state: statusUp.state || 'down', label: 'Dnsmasq' }),
+            ServiceStatus({ state: status.state || 'down', label: 'Dnsmasq' }),
             Tabs({ state, tabs: tabNames }),
             state.activeTab === 'ranges'
                 ? Table({ columns: ['Interface', 'Start', 'End', 'Lease', 'Action'], rows: rangesRows, emptyText: 'No DHCP ranges' }) : null,
@@ -169,7 +141,7 @@ export default definePage({
             state.activeTab === 'dns'
                 ? Table({ columns: ['Name', 'Address', 'Action'], rows: dnsRows, emptyText: 'No custom DNS records' }) : null,
             state.activeTab === 'active'
-                ? Table({ columns: ['MAC', 'IP', 'Hostname', 'Expires'], rows: (state.leases || []).map((l, i) => h('tr', { key: l.mac || i },
+                ? Table({ columns: ['MAC', 'IP', 'Hostname', 'Expires'], rows: (state.dnsmasq.data?.leases || []).map((l) => h('tr', { key: l.mac || l.ip },
                         h('td', null, esc(l.mac || '-')),
                         h('td', null, esc(l.ip || '-')),
                         h('td', null, esc(l.hostname || '-')),
@@ -177,4 +149,4 @@ export default definePage({
                     )), emptyText: 'No active leases' }) : null,
         ];
     },
-});
+});

webui/static/pages/interfaces.js

@@ -1,4 +1,4 @@
-import { h, PageHeader, Table, renderGuard, enc, $val, apiFetch, toast, definePage, refactorLoad, StatusText, QuickModal, ZoneSelect } from '/static/hoover/index.js?v=6';
+import { h, PageHeader, Table, renderGuardMulti, enc, $val, apiFetch, toast, definePage, getModel, modelFetch, StatusText, QuickModal, ZoneSelect } from '/static/hoover/index.js?v=7';
 
 async function changeZone(name, zone, state) {
     const r = await apiFetch('/api/firewall/zones/' + enc(zone) + '/interfaces', {
@@ -7,7 +7,8 @@ async function changeZone(name, zone, state) {
     });
     if (r.ok) {
         toast(name + ' \u2192 ' + zone, 'success');
-        await load(state);
+        modelFetch('firewall');
+        modelFetch('network');
     } else {
         toast(r.error || 'Failed', 'error');
     }
@@ -32,53 +33,44 @@ const cfgModalFn = QuickModal({
         }),
         successMsg: 'Config saved',
     },
-    reload: (s) => load(s),
+    refresh: ['firewall', 'network'],
 });
 
-async function load(state, abortController, entry) {
-    await refactorLoad(state,
-        s => s.ifaces?.length,
-        async (s, sig, isAborted) => {
-            const [fw, net] = await Promise.all([
-                apiFetch('/api/firewall/zones', { signal: sig }),
-                apiFetch('/api/network/interfaces', { signal: sig }),
-            ]);
-            if (isAborted()) return;
-            if (fw.ok) s.zones = fw.data?.available || [];
-            else s.error = fw.error;
-            if (net.ok) {
-                const ifaceZone = {};
-                for (const [zoneName, ifaces] of Object.entries(fw.data?.active || {})) {
-                    for (const name of (ifaces || [])) ifaceZone[name] = zoneName;
-                }
-                const ifacesObj = net.data?.interfaces || {};
-                s.ifaces = Object.entries(ifacesObj).map(([name, entry]) => ({
-                    name,
-                    mac: entry?.runtime?.mac || null,
-                    ips: [...(entry?.config?.addresses || []), ...(entry?.runtime?.addresses || [])],
-                    state: (entry?.runtime?.state || '').startsWith('routable') || (entry?.runtime?.state || '').startsWith('carrier') ? 'up' : 'down',
-                    zone: ifaceZone[name] || null,
-                    config: entry?.config || {},
-                }));
-            } else if (!s.error) {
-                s.error = net.error;
-            }
-        },
-        { entry, abortController },
-    );
-}
-
 export default definePage({
     init() {
-        return { ifaces: [], zones: [] };
+        return {
+            firewall: getModel('firewall'),
+            network: getModel('network'),
+        };
     },
-    subscribe: ['firewall', 'networkd'],
-    load,
     render(state) {
-        const guard = renderGuard(state, 'Interfaces', 'Network interface management', state.ifaces.length);
+        const guard = renderGuardMulti('Interfaces', 'Network interface management', state.firewall, state.network);
         if (guard) return guard;
 
-        const rows = state.ifaces.map(iface => {
+        const fwZones = state.firewall.data?.zones || {};
+        const netData = state.network.data?.interfaces || {};
+        const zones = fwZones.available || [];
+        const activeZones = fwZones.active || {};
+
+        const ifaces = Object.entries(netData).map(([name, entry]) => {
+            let zone = null;
+            for (const [zoneName, ifaces] of Object.entries(activeZones)) {
+                if ((ifaces || []).includes(name)) {
+                    zone = zoneName;
+                    break;
+                }
+            }
+            return {
+                name,
+                mac: entry?.runtime?.mac || null,
+                ips: [...(entry?.config?.addresses || []), ...(entry?.runtime?.addresses || [])],
+                state: (entry?.runtime?.state || '').startsWith('routable') || (entry?.runtime?.state || '').startsWith('carrier') ? 'up' : 'down',
+                zone,
+                config: entry?.config || {},
+            };
+        });
+
+        const rows = ifaces.map(iface => {
             return h('tr', { key: iface.name },
                 h('td', null, h('strong', null, iface.name)),
                 h('td', { class: 'text-muted' }, String(iface.mac || 'N/A')),
@@ -86,7 +78,7 @@ export default definePage({
                 h('td', null, StatusText({ status: iface.state })),
                 h('td', null,
                     ZoneSelect({
-                        zones: state.zones,
+                        zones,
                         value: iface.zone,
                         onChange: (z) => changeZone(iface.name, z, state),
                     }),
@@ -108,4 +100,4 @@ export default definePage({
             }),
         ];
     },
-});
+});

webui/static/pages/logs.js

@@ -1,108 +1,57 @@
-import { h, PageHeader, Tabs, esc, definePage, refactorLoad } from '/static/hoover/index.js?v=6';
+import { h, PageHeader, Tabs, esc, definePage, renderGuard, modelFetch, getModel } from '/static/hoover/index.js?v=7';
 
 const logTabs = [
-    { key: 'journal', label: 'Journal', url: '/api/logs/journal' },
-    { key: 'nginx-access', label: 'Nginx Access', url: '/api/logs/nginx/access' },
-    { key: 'nginx-error', label: 'Nginx Error', url: '/api/logs/nginx/error' },
-    { key: 'dnsmasq', label: 'Dnsmasq', url: '/api/logs/dnsmasq' },
-    { key: 'app', label: 'App', url: '/api/logs/app' },
+    { key: 'journal', label: 'Journal' },
+    { key: 'nginx-access', label: 'Nginx Access' },
+    { key: 'nginx-error', label: 'Nginx Error' },
+    { key: 'dnsmasq', label: 'Dnsmasq' },
+    { key: 'app', label: 'App' },
 ];
 
-async function fetchLog(state, url, signal) {
-    if (signal?.aborted) return;
-    const res = await fetch(url, { signal });
-    if (signal?.aborted) return;
-    if (!res.ok) throw new Error(`HTTP ${res.status}`);
-    const text = await res.text();
-    if (signal?.aborted) return;
-    state.lines = text.split('\n').filter(l => l.length > 0);
-}
-
 export default definePage({
     init() {
-        return { activeTab: 'journal', lines: [], loading: false, _abortCtrl: null };
-    },
-    subscribe: [],
-    async load(state, abortController, entry) {
-        await refactorLoad(state,
-            s => s.lines?.length,
-            async (s, sig, isAborted) => {
-                const tab = logTabs.find(t => t.key === s.activeTab) || logTabs[0];
-                await fetchLog(s, tab.url, sig);
-            },
-            { entry, abortController },
-        );
-    },
-    onUnmount(state) {
-        state._abortCtrl?.abort();
-        state.lines = [];
+        return {
+            logs: getModel('logs'),
+            activeTab: 'journal',
+        };
     },
     render(state) {
-        const tab = logTabs.find(t => t.key === state.activeTab) || logTabs[0];
+        const logData = state.logs.data;
+        const stale = logData?.tab !== state.activeTab;
+        const guard = renderGuard(state.logs, 'Logs', 'System and service logs', stale ? undefined : logData?.data);
+        if (guard) return guard;
 
-        const lineVnodes = state.lines.map((line, i) =>
+        const lines = logData.data || [];
+        const tab = logTabs.find(t => t.key === state.activeTab) || logTabs[0];
+        const lineVnodes = lines.map((line, i) =>
             h('div', { class: 'log-line', key: i }, esc(line))
         );
 
+        const tabsBody = Tabs({
+            state,
+            tabs: logTabs.map(t => t.key),
+            formatLabel: (k) => {
+                const t = logTabs.find(t => t.key === k);
+                return t ? t.label : k.charAt(0).toUpperCase() + k.slice(1);
+            },
+            onTabClick: (key) => modelFetch('logs', key),
+        });
+
         return [
-            PageHeader({ title: 'Logs', subtitle: 'System & service logs' }),
-            Tabs({
-                state,
-                tabs: logTabs.map(t => t.key),
-                formatLabel: (k) => {
-                    const tab = logTabs.find(t => t.key === k);
-                    return tab ? tab.label : k.charAt(0).toUpperCase() + k.slice(1);
-                },
-                onTabClick: async (key) => {
-                    const tab = logTabs.find(t => t.key === key);
-                    if (!tab) return;
-                    state._abortCtrl?.abort();
-                    const ctrl = new AbortController();
-                    state._abortCtrl = ctrl;
-                    const tabs = state.lines?.length ? state : null;
-                    state.refreshing = !!tabs;
-                    if (!tabs) state.loading = true;
-                    state.error = null;
-                    try {
-                        await fetchLog(state, tab.url, ctrl.signal);
-                    } catch (e) {
-                        if (!ctrl.signal.aborted) state.error = String(e);
-                    }
-                    state.loading = false;
-                    state.refreshing = false;
-                },
-            }),
+            PageHeader({ title: 'Logs', subtitle: 'System and service logs' }),
             h('div', { class: 'card', key: 'log-card' },
+                tabsBody,
                 h('div', { class: 'card-header' },
                     h('span', null, tab.label),
                     h('button', {
                         class: 'btn btn-sm btn-outline',
                         style: 'float:right;',
-                        'on:click': async () => {
-                            state._abortCtrl?.abort();
-                            const ctrl = new AbortController();
-                            state._abortCtrl = ctrl;
-                            state.refreshing = true;
-                            state.error = null;
-                            try {
-                                await fetchLog(state, tab.url, ctrl.signal);
-                            } catch (e) {
-                                if (!ctrl.signal.aborted) state.error = String(e);
-                            }
-                            state.loading = false;
-                            state.refreshing = false;
-                        },
-                    }, '\u21BB')
+                        'on:click': () => modelFetch('logs', state.activeTab),
+                     }, '\u21BB'),
                 ),
                 h('div', { class: 'card-body log-body' },
-                    state.loading && !state.refreshing
-                        ? h('div', { class: 'loading' }, state.refreshing ? 'Refreshing...' : 'Loading...')
-                        : state.error
-                            ? h('div', { class: 'error-msg' }, state.error)
-                            : lineVnodes.length > 0
-                                ? h('pre', null, lineVnodes)
-                                : h('div', { class: 'text-muted text-sm' }, 'No log lines available')
-                )
+                    h('pre', null, lineVnodes),
+                ),
             ),
         ];
     },

webui/static/pages/nat.js

@@ -1,4 +1,4 @@
-import { h, PageHeader, Badge, StatusDot, Card, Table, renderGuard, enc, $val, apiFetch, toast, definePage, refactorLoad, ActionButton, DataTableSection, SectionTitle, ActionGroup, QuickModal, ConfirmDelete, ZoneSelect } from '/static/hoover/index.js?v=6';
+import { h, PageHeader, Badge, StatusDot, Card, Table, renderGuard, enc, $val, apiFetch, toast, definePage, getModel, modelFetch, ActionButton, DataTableSection, SectionTitle, ActionGroup, QuickModal, ConfirmDelete } from '/static/hoover/index.js?v=7';
 
 const addFwd = QuickModal({
     title: 'Add Port Forward',
@@ -11,7 +11,7 @@ const addFwd = QuickModal({
     ],
     submit: {
         url: '/api/firewall/forward-port',
-        body: (s) => ({
+        body: () => ({
             zone: $val('fwd-zone'),
             port: parseInt($val('fwd-port')),
             proto: ($val('fwd-proto') || 'tcp').trim(),
@@ -21,43 +21,23 @@ const addFwd = QuickModal({
         validate: (b) => !b.zone || !b.port || !b.proto ? 'Zone, port, and proto are required' : null,
         successMsg: 'Forward rule added',
     },
-    reload: (s) => load(s._s),
+    refresh: 'firewall',
 });
 
-async function load(state, abortController, entry) {
-    await refactorLoad(state,
-        s => Object.keys(s.config || {}).length,
-        async (s, sig, isAborted) => {
-            const r = await apiFetch('/api/firewall/config', { signal: sig });
-            if (isAborted()) return;
-            if (r.ok) s.config = r.data || {};
-            else s.error = r.error;
-            const zr = await apiFetch('/api/firewall/zones', { signal: sig });
-            if (isAborted()) return;
-            if (zr.ok) s.activeZones = Object.keys(zr.data?.active || {});
-            else if (!s.error) s.error = zr.error;
-            const sr = await apiFetch('/api/firewall/state', { signal: sig });
-            if (isAborted()) return;
-            if (sr.ok) s.stateData = sr.data;
-        },
-        { entry, abortController },
-    );
-}
-
 export default definePage({
     init() {
-        return { config: {}, activeZones: [], stateData: null };
+        return {
+            firewall: getModel('firewall'),
+        };
     },
-    subscribe: ['firewall'],
-    load,
     render(state) {
-        const guard = renderGuard(state, 'NAT', 'Masquerade & port forwarding', state.config);
+        const guard = renderGuard(state.firewall, 'NAT', 'Masquerade & port forwarding', state.firewall.data?.config);
         if (guard) return guard;
 
-        const cfg = state.config || {};
+        const cfg = state.firewall.data?.config || {};
         const zoneData = cfg.zones || {};
 
-        const sIface = (state.stateData || {}).interfaces || [];
+        const sIface = (state.firewall.data?.state || {}).interfaces || [];
         const masqZones = new Set(
             Object.entries(zoneData)
                 .filter(([, zcfg]) => !!zcfg.masquerade)
@@ -94,7 +74,7 @@ export default definePage({
                         labelOn: 'Disable', labelOff: 'Enable', condition: masq,
                         body: () => ({ zone, enable: !masq }),
                         successMsg: 'Masquerade ' + (masq ? 'disabled' : 'enabled') + ' on ' + zone,
-                        reload: () => load(state),
+                        refresh: 'firewall',
                     }),
                 ),
             );
@@ -117,7 +97,7 @@ export default definePage({
                             url: '/api/firewall/forward-port/' + enc(zone) + '/' + port + '/' + enc(proto),
                             message: 'Remove forward ' + zone + ':' + port + '/' + proto + '?',
                             success: 'Rule removed',
-                            reload: () => load(state),
+                            refresh: 'firewall',
                         }),
                     ),
                 ));
@@ -148,7 +128,8 @@ export default definePage({
             Card({ children: [
                 ActionGroup(
                     h('button', { class: 'btn btn-sm btn-primary',
-                        'on:click': () => addFwd({ zones: state.activeZones, _s: state }) }, 'Add Forward'),
+                        'on:click': () => addFwd({ zones: Object.keys(zoneData) })
+                    }, 'Add Forward'),
                 ),
                 Table({
                     columns: ['Zone', 'Proto', 'Port', 'To Addr', 'To Port', 'Action'],
@@ -159,4 +140,4 @@ export default definePage({
             ]}),
         ];
     },
-});
+});

webui/static/pages/notfound.js

@@ -1,12 +1,8 @@
-import { h, PageHeader, definePage } from '/static/hoover/index.js?v=6';
+import { h, PageHeader, definePage } from '/static/hoover/index.js?v=7';
 
 export default definePage({
     init() {
-        return { path: '' };
-    },
-    subscribe: [],
-    async load(state) {
-        state.path = location.hash.slice(1) || '';
+        return { path: location.hash.slice(1) || '' };
     },
     render(state) {
         return [

webui/static/pages/proxy.js

@@ -1,4 +1,4 @@
-import { h, PageHeader, Badge, Empty, Table, renderGuard, esc, enc, $val, apiFetch, toast, definePage, refactorLoad, ActionButton, ActionCell, certStatusBadge, ActionGroup, QuickModal } from '/static/hoover/index.js?v=6';
+import { h, PageHeader, Badge, Empty, Table, renderGuardMulti, esc, enc, $val, apiFetch, toast, definePage, getModel, modelFetch, ActionButton, ActionCell, certStatusBadge, ActionGroup, QuickModal } from '/static/hoover/index.js?v=7';
 
 const addDomain = QuickModal({
     title: 'Add Proxy Domain',
@@ -21,7 +21,7 @@ const addDomain = QuickModal({
         validate: (b) => !b.domain || !b.backend_host || !b.backend_port ? 'Domain, host, and port are required' : null,
         successMsg: 'Domain added',
     },
-    reload: (s) => load(s),
+    refresh: ['nginx', 'acme'],
 });
 
 const editDomain = QuickModal({
@@ -35,7 +35,7 @@ const editDomain = QuickModal({
     submit: {
         url: (d) => '/api/proxy/domains/' + enc(d.domain),
         method: 'PUT',
-        body: (d) => ({
+        body: () => ({
             backend_host: ($val('pe-host') || '').trim(),
             backend_port: parseInt($val('pe-port')),
             backend_proto: ($val('pe-proto') || 'http').trim(),
@@ -44,37 +44,22 @@ const editDomain = QuickModal({
         validate: (b) => !b.backend_host || !b.backend_port ? 'Host and port are required' : null,
         successMsg: 'Domain updated',
     },
-    reload: (s) => load(s._s),
+    refresh: ['nginx', 'acme'],
 });
 
-async function load(state, abortController, entry) {
-    await refactorLoad(state,
-        s => s.domains?.length,
-        async (s, sig, isAborted) => {
-            const domainsR = await apiFetch('/api/proxy/domains', { signal: sig });
-            if (isAborted()) return;
-            if (domainsR.ok) s.domains = domainsR.data || [];
-            else s.error = domainsR.error;
-            const certsR = await apiFetch('/api/certs/list', { signal: sig });
-            if (isAborted()) return;
-            if (certsR.ok) s.certs = certsR.data || [];
-            else if (!s.error) s.error = certsR.error;
-        },
-        { entry, abortController },
-    );
-}
-
 export default definePage({
     init() {
-        return { domains: [], certs: [] };
+        return {
+            nginx: getModel('nginx'),
+            acme: getModel('acme'),
+        };
     },
-    subscribe: ['nginx', 'acme'],
-    load,
     render(state) {
-        const guard = renderGuard(state, 'Proxy', 'Nginx reverse proxy', state.domains);
+        const guard = renderGuardMulti('Proxy', 'Nginx reverse proxy', state.nginx, state.acme);
         if (guard) return guard;
 
-        const rows = state.domains.map(d => {
+        const domains = state.nginx.data || [];
+        const rows = domains.map(d => {
             const certBadge = certStatusBadge({
                 certStatus: d.cert_status,
                 daysRemaining: d.days_remaining,
@@ -89,11 +74,11 @@ export default definePage({
                 h('td', null, certBadge),
                 ActionCell({
                     editLabel: 'Edit',
-                    editClick: () => editDomain({ ...d, _s: state }),
+                    editClick: () => editDomain(d),
                     removeUrl: '/api/proxy/domains/' + enc(d.domain),
                     removeMessage: 'Remove proxy for ' + d.domain + '?',
                     removeSuccess: 'Domain removed',
-                    removeReload: () => load(state),
+                    removeRefresh: ['nginx', 'acme'],
                     removeLabel: 'Delete',
                 }),
             );
@@ -105,7 +90,7 @@ export default definePage({
                 url: '/api/proxy/apply',
                 successMsg: 'Nginx applied & reloaded',
                 label: 'Apply',
-                reload: () => load(state),
+                refresh: ['nginx', 'acme'],
             }),
         );
 
@@ -119,4 +104,4 @@ export default definePage({
                 : Empty({ text: 'No proxy domains configured. Add a domain to start terminating SSL.' }),
         ];
     },
-});
+});

webui/static/pages/rules.js

@@ -1,4 +1,4 @@
-import { h, PageHeader, Empty, Card, ConfirmDelete, Table, renderGuard, esc, enc, $val, apiFetch, toast, definePage, refactorLoad, MonoText, QuickModal } from '/static/hoover/index.js?v=6';
+import { h, PageHeader, Empty, Card, ConfirmDelete, Table, renderGuard, esc, enc, $val, apiFetch, toast, definePage, getModel, modelFetch, MonoText, QuickModal } from '/static/hoover/index.js?v=7';
 
 const addRule = QuickModal({
     title: 'Add Rich Rule',
@@ -8,41 +8,25 @@ const addRule = QuickModal({
     ],
     submit: {
         url: '/api/firewall/rich-rules',
-        body: (s) => ({ zone: $val('rule-zone'), rule: ($val('rule-text') || '').trim() }),
+        body: () => ({ zone: $val('rule-zone'), rule: ($val('rule-text') || '').trim() }),
         validate: (b) => !b.zone || !b.rule ? 'Zone and rule are required' : null,
         successMsg: 'Rule added',
     },
-    reload: (s) => load(s._s),
+    refresh: 'firewall',
 });
 
-async function load(state, abortController, entry) {
-    await refactorLoad(state,
-        s => Object.keys(s.config || {}).length,
-        async (s, sig, isAborted) => {
-            const r = await apiFetch('/api/firewall/config', { signal: sig });
-            if (isAborted()) return;
-            if (r.ok) s.config = r.data || {};
-            else s.error = r.error;
-            const zr = await apiFetch('/api/firewall/zones', { signal: sig });
-            if (isAborted()) return;
-            if (zr.ok) s.zones = Object.keys(zr.data?.active || {});
-            else if (!s.error) s.error = zr.error;
-        },
-        { entry, abortController },
-    );
-}
-
 export default definePage({
     init() {
-        return { config: {}, zones: [] };
+        return {
+            firewall: getModel('firewall'),
+        };
     },
-    subscribe: ['firewall'],
-    load,
     render(state) {
-        const guard = renderGuard(state, 'Rules', 'Firewall rich rules', state.config);
+        const guard = renderGuard(state.firewall, 'Rules', 'Firewall rich rules', state.firewall.data?.config);
         if (guard) return guard;
 
-        const cfg = state.config || {};
+        const cfg = state.firewall.data?.config || {};
+        const zones = state.firewall.data?.zones?.available || [];
         const zoneData = cfg.zones || {};
         const zoneRules = {};
         Object.entries(zoneData).forEach(([zname, zcfg]) => {
@@ -67,7 +51,7 @@ export default definePage({
                                     url: '/api/firewall/rich-rules/' + enc(zone) + '/' + enc(ruleId || ''),
                                     message: 'Remove rule: ' + ruleText.substring(0, 40) + '...?',
                                     success: 'Rule removed',
-                                    reload: () => load(state),
+                                    refresh: 'firewall',
                                 }),
                             ),
                         );
@@ -83,9 +67,9 @@ export default definePage({
                 title: 'Rules',
                 subtitle: 'Firewall rich rules',
                 actions: h('button', { class: 'btn btn-primary',
-                    'on:click': () => addRule({ zones: state.zones, _s: state }), }, 'Add Rule'),
+                    'on:click': () => addRule({ zones }), }, 'Add Rule'),
             }),
             ...(cards.length ? cards : [Empty({ text: 'No rich rules configured.' })]),
         ];
     },
-});
+});

webui/static/pages/wireguard.js

@@ -1,4 +1,4 @@
-import { h, PageHeader, Badge, StatusDot, Empty, Table, ServiceStatus, renderGuard, esc, enc, $val, apiFetch, toast, openModal, closeModal, formModal, definePage, apiSubmit, refactorLoad, ActionButton, ActionCell, MonoText, ActionGroup, QuickModal, downloadBlob } from '/static/hoover/index.js?v=6';
+import { h, PageHeader, Badge, StatusDot, Empty, Table, ServiceStatus, renderGuard, esc, enc, $val, apiFetch, toast, openModal, closeModal, formModal, definePage, getModel, modelFetch, ActionButton, ActionCell, MonoText, ActionGroup, QuickModal, downloadBlob } from '/static/hoover/index.js?v=7';
 
 const addPeer = QuickModal({
     title: 'Add WireGuard Peer',
@@ -19,7 +19,7 @@ const addPeer = QuickModal({
         validate: (b) => !b.name ? 'Name is required' : null,
         successMsg: 'Peer added',
     },
-    reload: (s) => load(s),
+    refresh: 'wireguard',
 });
 
 function downloadConfigModal(peerName, config, state) {
@@ -50,42 +50,21 @@ function downloadConfigModal(peerName, config, state) {
     });
 }
 
-async function load(state, abortController, entry) {
-    await refactorLoad(state,
-        s => s.peers?.length,
-        async (s, sig, isAborted) => {
-            const stR = await apiFetch('/api/wireguard/status', { signal: sig });
-            if (isAborted()) return;
-            if (stR.ok) s.status = stR.data || {};
-            else s.error = stR.error;
-            const pR = await apiFetch('/api/wireguard/peers', { signal: sig });
-            if (isAborted()) return;
-            if (pR.ok) s.peers = pR.data || [];
-            else if (!s.error) s.error = pR.error;
-            const cfgR = await apiFetch('/api/wireguard/config', { signal: sig });
-            if (isAborted()) return;
-            if (cfgR.ok) s.config = cfgR.data || {};
-            else if (!s.error) s.error = cfgR.error;
-        },
-        { entry, abortController },
-    );
-}
-
 export default definePage({
     init() {
-        return { status: {}, peers: [], config: {} };
+        return {
+            wireguard: getModel('wireguard'),
+        };
     },
-    subscribe: ['wireguard'],
-    load,
     render(state) {
-        const guard = renderGuard(state, 'WireGuard', 'Tunnel: ' + ((state.status || {}).state || 'unknown') + ', Listen: ' + ((state.config?.interface || {}).listen_port || '-'), state.peers);
+        const guard = renderGuard(state.wireguard, 'WireGuard', null, state.wireguard.data?.peers);
         if (guard) return guard;
 
-        const st = state.status || {};
+        const st = state.wireguard.data?.status || {};
         const isUp = st.state === 'up';
-        const listenPort = (state.config?.interface || {}).listen_port || '-';
+        const listenPort = (state.wireguard.data?.config?.interface || {}).listen_port || '-';
 
-        const peerRows = state.peers.map(p => {
+        const peerRows = (state.wireguard.data?.peers || []).map(p => {
             const hasHandshake = !!p.latest_handshake;
             return h('tr', { key: p.name },
                 h('td', null,
@@ -103,11 +82,11 @@ export default definePage({
                 ),
                 ActionCell({
                     editLabel: 'Config',
-                    editClick: () => downloadConfigModal(p.name, state.config, state),
+                    editClick: () => downloadConfigModal(p.name, state.wireguard.data?.config, state),
                     removeUrl: '/api/wireguard/peers/' + enc(p.name),
                     removeMessage: 'Remove peer ' + p.name + '?',
                     removeSuccess: 'Peer removed',
-                    removeReload: () => load(state),
+                    removeRefresh: 'wireguard',
                 }),
             );
         });
@@ -118,13 +97,13 @@ export default definePage({
                 url: '/api/wireguard/' + (isUp ? 'down' : 'up'),
                 labelOn: 'Stop', labelOff: 'Start', condition: isUp,
                 successMsg: 'Tunnel ' + (isUp ? 'stopped' : 'started'),
-                reload: () => load(state),
+                refresh: 'wireguard',
             }),
             ActionButton({
                 url: '/api/wireguard/apply',
                 successMsg: 'Config applied',
                 label: 'Apply',
-                reload: () => load(state),
+                refresh: 'wireguard',
             }),
         );
 
@@ -143,4 +122,4 @@ export default definePage({
                 : Empty({ text: 'No peers configured. Add a peer above.' }),
         ];
     },
-});
+});

webui/static/pages/zones.js

@@ -1,4 +1,4 @@
-import { h, PageHeader, Badge, Empty, ConfirmDelete, renderGuard, enc, esc, $val, apiFetch, toast, definePage, refactorLoad, MultiSelectModal, QuickModal } from '/static/hoover/index.js?v=6';
+import { h, PageHeader, Badge, Empty, ConfirmDelete, renderGuard, enc, esc, $val, definePage, getModel, MultiSelectModal, QuickModal } from '/static/hoover/index.js?v=7';
 
 const addZone = QuickModal({
     title: 'Add Zone',
@@ -12,75 +12,28 @@ const addZone = QuickModal({
         validate: (b) => !b.name ? 'Zone name required' : null,
         successMsg: 'Zone created',
     },
-    reload: (s) => load(s),
+    refresh: 'firewall',
 });
 
-async function load(state, abortController, entry) {
-    await refactorLoad(state,
-        s => Object.keys(s.zones || {}).length,
-        async (s, sig, isAborted) => {
-            const [zRes, svcRes, ifRes] = await Promise.allSettled([
-                apiFetch('/api/firewall/zones', { signal: sig }),
-                apiFetch('/api/firewall/services', { signal: sig }),
-                apiFetch('/api/firewall/interfaces', { signal: sig }),
-            ]);
-            if (isAborted()) return;
-
-            const errors = [];
-            if (zRes.status === 'rejected') errors.push(zRes.reason?.message || 'Failed');
-            else if (!zRes.value.ok) errors.push(zRes.value.error || 'Failed');
-            if (svcRes.status === 'rejected') errors.push(svcRes.reason?.message || 'Failed');
-            else if (!svcRes.value.ok) errors.push(svcRes.value.error || 'Failed');
-            if (ifRes.status === 'rejected') errors.push(ifRes.reason?.message || 'Failed');
-            else if (!ifRes.value.ok) errors.push(ifRes.value.error || 'Failed');
-            if (errors.length) {
-                s.error = errors[0];
-                return;
-            }
-
-            const data = zRes.value.data || {};
-            const activeZones = data.active || {};
-            const availableZones = data.available || [];
-
-            const detailPromises = availableZones.map(name =>
-                apiFetch('/api/firewall/zones/' + enc(name), { signal: sig })
-            );
-            const detailResults = await Promise.allSettled(detailPromises);
-
-            if (isAborted()) return;
-
-            const zones = {};
-            for (let i = 0; i < availableZones.length; i++) {
-                const name = availableZones[i];
-                const res = detailResults[i];
-                const detail = res.status === 'fulfilled' ? res.value : null;
-                if (detail && detail.ok) {
-                    zones[name] = detail.data;
-                    const activeIfaces = activeZones[name];
-                    if (Array.isArray(activeIfaces)) {
-                        zones[name].interfaces = activeIfaces;
-                    }
-                }
-            }
-            s.zones = zones;
-            s.services = svcRes.value.data || [];
-            s.interfaces = ifRes.value.data || [];
-        },
-        { entry, abortController },
-    );
-}
-
 export default definePage({
     init() {
-        return { zones: {}, services: [], interfaces: [] };
+        return {
+            firewall: getModel('firewall'),
+        };
     },
-    subscribe: ['firewall'],
-    load,
     render(state) {
-        const guard = renderGuard(state, 'Zones', 'Firewall zone management', Object.keys(state.zones || {}).length);
+        const guard = renderGuard(state.firewall, 'Zones', 'Firewall zones', state.firewall.data?.zones);
         if (guard) return guard;
 
-        const zoneCards = Object.entries(state.zones || []).map(([name, zdata]) => {
+        const zones = state.firewall.data?.zones?.available || [];
+        const activeZones = state.firewall.data?.zones?.active || {};
+        const zoneDetails = {};
+        for (const name of zones) {
+            const activeIfaces = activeZones[name];
+            zoneDetails[name] = { interfaces: Array.isArray(activeIfaces) ? activeIfaces : [] };
+        }
+
+        const zoneCards = Object.entries(zoneDetails).map(([name, zdata]) => {
             const z = typeof zdata === 'object' ? zdata : {};
             const ifacesArr = Array.isArray(z.interfaces) ? z.interfaces : [];
             const svcsArr = Array.isArray(z.services) ? z.services : [];
@@ -110,29 +63,29 @@ export default definePage({
                         'on:click': () => MultiSelectModal({
                             title: 'Interfaces: ' + name,
                             url: '/api/firewall/zones/' + enc(name) + '/interfaces',
-                            options: state.interfaces,
+                            options: state.firewall.data?.interfaces || [],
                             selected: ifacesArr,
                             fieldKey: 'interfaces',
                             successMsg: 'Interfaces updated',
-                            reload: () => load(state),
+                            refresh: 'firewall',
                         })(),
                     }, 'Interfaces'),
                     h('button', { class: 'btn btn-sm btn-outline',
                         'on:click': () => MultiSelectModal({
                             title: 'Services: ' + name,
                             url: '/api/firewall/zones/' + enc(name) + '/services',
-                            options: state.services,
+                            options: state.firewall.data?.services || [],
                             selected: svcsArr,
                             fieldKey: 'services',
                             successMsg: 'Services updated',
-                            reload: () => load(state),
+                            refresh: 'firewall',
                         })(),
                     }, 'Services'),
                     ConfirmDelete({
                         url: '/api/firewall/zones/' + enc(name),
                         message: 'Delete zone ' + name + '?',
                         success: 'Zone ' + name + ' deleted',
-                        reload: () => load(state),
+                        refresh: 'firewall',
                         label: 'Delete',
                     }),
                 ),
@@ -144,11 +97,11 @@ export default definePage({
                 title: 'Zones',
                 subtitle: 'Firewall zones',
                 actions: h('button', { class: 'btn btn-primary',
-                    'on:click': () => addZone(state), }, 'Add Zone'),
+                    'on:click': () => addZone(), }, 'Add Zone'),
             }),
             zoneCards.length
                 ? h('div', { class: 'card-grid' }, ...zoneCards)
                 : Empty({ text: 'No zones configured. Add a zone to get started.' }),
         ];
     },
-});
+});