From c84ce1f5e42e132a8d6114f69802d2235b2b5a6f Mon Sep 17 00:00:00 2001
From: Chuck <33324927+ChuckBuilds@users.noreply.github.com>
Date: Fri, 2 Oct 2026 13:47:28 -0400
Subject: [PATCH] feat(web): Rotation, Operation History, Config Editor and
 Backup & Restore become ES-module pages (stage 2)

Continues #703. Each partial's inline script moves to static/v3/js/pages/<name>.js
with init/destroy under the page registry; the partials carry no <script> and
no onclick (buttons are delegated data-actions). Listeners and reads use
ctx.signal; writes run to completion and still report. The ten globals the
Config Editor and Backup & Restore defined stay as deprecated aliases via
window.LEDMatrix. api.js gains a raw body option for uploads, and
PluginOrderList.init() a signal option.

Adds a DOM suite per page and extends test_es_modules.py.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 CHANGELOG.md                                  |  23 ++
 docs/WEB_FRONTEND_ARCHITECTURE.md             |  41 +-
 test/js/README.md                             |   4 +
 test/js/dom/test_backup_restore_page.js       | 305 ++++++++++++++
 test/js/dom/test_durations_page.js            | 178 +++++++++
 test/js/dom/test_operation_history_page.js    | 231 +++++++++++
 test/js/dom/test_raw_json_page.js             | 187 +++++++++
 test/js/run_all.js                            |   4 +-
 test/js/unit/test_core_modules.js             |   4 +
 test/js/unit/test_html_escaping.js            |   9 +-
 test/web_interface/test_es_modules.py         |  71 +++-
 web_interface/static/v3/js/core/api.js        |   5 +
 web_interface/static/v3/js/core/boot.js       |  44 ++-
 .../static/v3/js/pages/backup-restore.js      | 373 ++++++++++++++++++
 web_interface/static/v3/js/pages/durations.js |  50 +++
 .../static/v3/js/pages/operation-history.js   | 283 +++++++++++++
 web_interface/static/v3/js/pages/raw-json.js  | 191 +++++++++
 .../static/v3/js/widgets/plugin-order-list.js |   8 +-
 .../templates/v3/partials/backup_restore.html | 250 +-----------
 .../templates/v3/partials/durations.html      |  36 +-
 .../v3/partials/operation_history.html        | 308 +--------------
 .../templates/v3/partials/raw_json.html       | 233 +----------
 22 files changed, 2019 insertions(+), 819 deletions(-)
 create mode 100644 test/js/dom/test_backup_restore_page.js
 create mode 100644 test/js/dom/test_durations_page.js
 create mode 100644 test/js/dom/test_operation_history_page.js
 create mode 100644 test/js/dom/test_raw_json_page.js
 create mode 100644 web_interface/static/v3/js/pages/backup-restore.js
 create mode 100644 web_interface/static/v3/js/pages/durations.js
 create mode 100644 web_interface/static/v3/js/pages/operation-history.js
 create mode 100644 web_interface/static/v3/js/pages/raw-json.js

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 29c9f698a..149a1c913 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,29 @@ accepts both, but the store flags the old spelling as deprecated
 
 ## Unreleased
 
+### Web UI: four more tabs are ES-module pages (stage 2)
+
+- Rotation, Operation History, Config Editor and Backup & Restore follow the
+  Cache tab (#703): each partial's inline `<script>` is now
+  `static/v3/js/pages/<name>.js` (`durations`, `operation-history`,
+  `raw-json`, `backup-restore`), started once per swap-in by the page
+  registry and stopped on swap-out. None of the four partials has an inline
+  script or `onclick` any more. Buttons carry `data-action` and use one
+  delegated listener. Server data is drawn with `textContent`.
+- Old globals keep working as deprecated aliases through `window.LEDMatrix`
+  (one console warning each): `formatJson`, `manualValidateJson`,
+  `validateJSON`, `saveMainConfig`, `saveSecretsConfig`, `exportBackup`,
+  `loadBackupList`, `validateRestoreFile`, `clearRestore`, `runRestore`.
+- Reads are cancelled when a tab is swapped away. Writes (save, delete,
+  export, restore) are not, and their result is still reported.
+- `core/api.js` accepts a raw `body` (a `FormData` upload).
+  `PluginOrderList.init()` accepts a `signal` for its plugin-list request.
+- Small fixes on the way: the Config Editor's "Invalid JSON" line no longer
+  puts the parser's message into `innerHTML`, and Operation History's
+  "Showing x to y of z" now resets when nothing matches.
+- New DOM suites `test/js/dom/test_{durations,operation_history,raw_json,backup_restore}_page.js`.
+  `test/web_interface/test_es_modules.py` pins the converted pages and the aliases.
+
 ### Garbage-collection pauses in the frame stats
 
 - The display now times every Python garbage collection
diff --git a/docs/WEB_FRONTEND_ARCHITECTURE.md b/docs/WEB_FRONTEND_ARCHITECTURE.md
index b5cde6ca8..da3caee59 100644
--- a/docs/WEB_FRONTEND_ARCHITECTURE.md
+++ b/docs/WEB_FRONTEND_ARCHITECTURE.md
@@ -46,6 +46,7 @@ static/v3/js/
             store.js (the one installed-plugin store), form/renderer.js
   pages/                one module per tab partial
     cache.js            export init(root, ctx), destroy(root, ctx)
+    durations.js, operation-history.js, raw-json.js, backup-restore.js
     ...
 ```
 
@@ -57,9 +58,29 @@ A converted partial has no `<script>`. Its root element names its page:
 <div class="..." data-page="cache"> ... </div>
 ```
 
-`core/boot.js` registers each page with a loader:
-`registry.register('cache', () => import('../pages/cache.js'))`. A page's
-module is fetched only when its partial first appears.
+`core/boot.js` lists each page with a loader,
+`'cache': page(function() { return import('../pages/cache.js'); })`, and
+registers them all. A page's module is fetched only when its partial first
+appears. `page()` remembers the module once loaded, so the alias of an old
+synchronous global (`validateJSON` returns a boolean) still answers
+synchronously while its page is on screen.
+
+The conventions the converted pages share:
+
+- **Buttons name an action.** A partial's buttons carry `data-action` (and
+  any argument as another `data-*` attribute) instead of an `onclick` that
+  names a global. One delegated listener on the page root handles them all,
+  including rows drawn later.
+- **Server data is drawn with `textContent`**, never a markup string.
+- **Reads are cancelled, writes are not.** Loads pass `ctx.signal`, so a swap
+  cancels them. Saves, deletes, exports and restores do not: the server
+  finishes them anyway, so the page still reports the result in a
+  notification but draws nothing into a page that has gone.
+- **Old globals become aliases.** Each `window.*` name a page used to define
+  is made in `boot.js` with `alias(page, name, replacement)`, which forwards
+  to the module's export of the same name and warns once.
+- **Timers are cleared in `destroy()`**, the one thing `ctx.signal` cannot
+  undo by itself.
 
 `core/registry.js` handles the rest:
 
@@ -214,10 +235,10 @@ are the inline script in each partial today.
 | # | Page | Inline JS | Why it is here |
 |---|---|---|---|
 | 1 | Cache (`cache.html`) | 163 lines, now 0 | **Done in stage 1.** One endpoint pair, no globals other pages use. The reference conversion |
-| 2 | Rotation (`durations.html`) | 29 | Tiny. One htmx form |
-| 3 | Operation History | 293 | No globals, read-only list |
-| 4 | Config Editor (`raw_json.html`) | 212 | No globals. CodeMirror is set up and torn down in init/destroy |
-| 5 | Backup & Restore | 232 | 5 globals used only by its own `onclick`s; these become delegated listeners plus deprecated aliases |
+| 2 | Rotation (`durations.html`) | 29 lines, now 0 | **Done in stage 2.** The form stays plain htmx; the page starts the shared rotation-order widget, whose plugin-list request now takes `ctx.signal`. Its `hx-on` and `onsubmit` attributes call shared globals (`showSaveResult`, `fixInvalidNumberInputs`) and move with step 6 |
+| 3 | Operation History | 293 lines, now 0 | **Done in stage 2.** Read-only list; rows drawn with `textContent`, the search debounce cleared on destroy. The "Showing x to y" counters now also reset when nothing matches |
+| 4 | Config Editor (`raw_json.html`) | 212 lines, now 0 | **Done in stage 2.** Plain textareas (no CodeMirror on this page). It defined 5 globals after all (`formatJson`, `manualValidateJson`, `validateJSON`, `saveMainConfig`, `saveSecretsConfig`); nothing else used them, and they are deprecated aliases now. The live "Invalid JSON" line no longer puts the parser's message into `innerHTML` |
+| 5 | Backup & Restore | 232 lines, now 0 | **Done in stage 2.** Its 5 globals (`exportBackup`, `loadBackupList`, `validateRestoreFile`, `clearRestore`, `runRestore`) are deprecated aliases; the buttons are delegated `data-action`s. Uploads go through `ctx.api.request(..., { body: formData })` (`api.js` gained a raw `body` option) |
 | 6 | Schedule | 193 | 2 globals used as `hx-on` response handlers. Moves `hx-on` handlers into page listeners |
 | 7 | General | 147 | `webLogin` global and the security section. The first page that touches login |
 | 8 | Display | 231 | First page with `LEDVisibility` timers: those move to a `ctx.visibility` service that stops on destroy |
@@ -260,7 +281,11 @@ Unit suites need only node. They import the shipped modules directly:
 | `unit/test_page_registry.js` | Unit, minimal DOM shim | The lifecycle: one init per root, destroy on swap, a veto keeps the page, swaps elsewhere leave it alone, the sweep, lazy loading, a destroy while loading, error containment |
 | `unit/test_core_modules.js` | Unit | `api.js` (envelope, errors, abort, login redirect, path check) and `facade.js` (facade, aliases) |
 | `dom/test_cache_page.js` | DOM: real partial, real API shape | No inline script; one request per swap and per Refresh after five swaps; a cancelled request draws nothing; hostile keys stay text; delete, empty, error, network and login states |
-| `test/web_interface/test_es_modules.py` | pytest | MIME type; `no-cache` without `?v` and immutable with it; `boot.js` loads last; every import resolves inside `core/` and `pages/`; every registered page has its module and exactly one partial root; a converted partial has no `<script>` |
+| `dom/test_durations_page.js` | DOM: real partial, real widget, real API shape | One plugin-list request per swap; Move down moves one place after five swaps; the swap cancels a request in flight; a late-loading widget is waited for, and a page swapped away while waiting starts nothing; hostile names stay text |
+| `dom/test_operation_history_page.js` | DOM: real partial, real API shape | One history request per swap and per Refresh; the plugin filter filled once (from `PluginAPI`'s cache when loaded); paging, filters, debounced search, Clear (one DELETE), error/network/login states, cancel on swap; hostile ids, users and errors stay text |
+| `dom/test_raw_json_page.js` | DOM: real partial, real config | One POST per Save after five swaps, to the right file; Format and Validate act once; invalid JSON never sent and its message stays text; a save survives a swap and is still reported; the old globals' entry points |
+| `dom/test_backup_restore_page.js` | DOM: real partial, real API shape | One request per Refresh, Delete, Export (busy button ignores a second click), Inspect and Restore after five swaps; the upload's fields and the six restore options; reads cancelled by a swap, writes not; hostile file and host names stay text; the old globals' entry points |
+| `test/web_interface/test_es_modules.py` | pytest | MIME type; `no-cache` without `?v` and immutable with it; `boot.js` loads last; every import resolves inside `core/` and `pages/`; the converted pages are exactly the registered ones, each with its module, `init`, and one root in the rendered partial; a converted partial has no `<script>` and no `onclick`; every moved global is aliased in `boot.js` and exported by its module, and no template defines it any more |
 | `test/test_field_model_parity.py` | pytest | The model against the macro for every available schema |
 
 What each future step adds:
diff --git a/test/js/README.md b/test/js/README.md
index 1ad4e10a7..cc0c1b4f8 100644
--- a/test/js/README.md
+++ b/test/js/README.md
@@ -58,6 +58,10 @@ server has none.
 | `dom/test_store_dom.js` | yes | Store pagination, per-page, category, tri-state Installed button, and persistence across a re-boot, against the live registry |
 | `dom/test_no_double_fetch.js` | yes | Loads the **whole** `plugins_manager.js` and counts requests: typing in the store search must filter the cached list, not refetch `/api/v3/plugins/store/list` |
 | `dom/test_cache_page.js` | yes | The Cache tab as a page module (`js/pages/cache.js`) on the real partial: no inline script, one request per swap and per Refresh after repeated swaps, a cancelled request draws nothing, hostile keys stay text, delete/empty/error/login states |
+| `dom/test_durations_page.js` | yes | The Rotation tab (`js/pages/durations.js`) with the real `plugin-order-list.js` widget: one plugin-list request per swap, one move per click after repeated swaps, a swap cancels the request in flight, a late widget is waited for |
+| `dom/test_operation_history_page.js` | yes | The Operation History tab (`js/pages/operation-history.js`): one request per swap and per Refresh, the plugin filter filled once, paging, filters, search, Clear, error/login states, hostile values stay text |
+| `dom/test_raw_json_page.js` | yes | The Config Editor tab (`js/pages/raw-json.js`): one POST per Save after repeated swaps, Format/Validate, invalid JSON never sent, a save survives a swap, the old global entry points |
+| `dom/test_backup_restore_page.js` | yes | The Backup & Restore tab (`js/pages/backup-restore.js`): one request per action after repeated swaps, the upload and restore options, reads cancelled and writes not on a swap, hostile names stay text, the old global entry points |
 | `dom/test_tools_sections.js` | yes | The Tools tab's MQTT bridge and Pixlet editor sections: form prefill, the write-only password (blank means unchanged), the running-session banner and countdown, and that the editor link points at the host you loaded the page from |
 
 Point the DOM suites at a rig with a full plugin set when it matters — a dev box
diff --git a/test/js/dom/test_backup_restore_page.js b/test/js/dom/test_backup_restore_page.js
new file mode 100644
index 000000000..e30a73c22
--- /dev/null
+++ b/test/js/dom/test_backup_restore_page.js
@@ -0,0 +1,305 @@
+// The Backup & Restore tab as a page module
+// (static/v3/js/pages/backup-restore.js), in a real DOM (jsdom) with the real
+// server-rendered partial and the real API's payload shapes. Built like
+// test_cache_page.js:
+//
+//   * the partial ships no <script> and no onclick; its root is
+//     data-page="backup-restore" and its buttons name an action
+//   * after five swaps each button makes exactly one request
+//   * reads in flight are cancelled by a swap; writes (export, delete,
+//     restore) are not, and their result is still reported
+//   * file names, host names, plugin ids and messages are shown as text
+//   * the five old globals' entry points still work
+const http = require('http');
+const path = require('path');
+const { pathToFileURL } = require('url');
+const { JSDOM, VirtualConsole } = require('jsdom');
+
+const BASE = process.env.BASE || 'http://localhost:5000';
+const JS = path.resolve(__dirname, '../../../web_interface/static/v3/js');
+const get = p => new Promise((res, rej) =>
+  http.get(BASE + p, r => { let d = ''; r.on('data', c => d += c); r.on('end', () => res(d)); }).on('error', rej));
+const load = f => import(pathToFileURL(path.join(JS, f)).href);
+const tick = ms => new Promise(r => setTimeout(r, ms || 0));
+
+let pass = 0, fail = 0;
+const ok = (l, c, x) => c ? (pass++, console.log('  ok   ' + l))
+  : (fail++, console.log('  FAIL ' + l + (x !== undefined ? '  -> ' + JSON.stringify(x).slice(0, 300) : '')));
+
+(async () => {
+  const partial = await get('/partials/backup-restore');
+  const realPreview = JSON.parse(await get('/api/v3/backup/preview'));
+  const realList = JSON.parse(await get('/api/v3/backup/list'));
+  const { createRegistry } = await load('core/registry.js');
+  const { createApi } = await load('core/api.js');
+  const backupPage = await load('pages/backup-restore.js');
+
+  console.log('\n── Backup & Restore tab: page module (real DOM) ──');
+  ok('the partial ships no inline script', !/<script/i.test(partial));
+  ok('the partial has no inline handlers', !/onclick=/i.test(partial));
+  ok('the partial root is data-page="backup-restore"', /data-page="backup-restore"/.test(partial));
+  ok('its buttons name an action', ['export', 'inspect', 'restore', 'cancel', 'refresh']
+     .every(a => partial.includes(`data-action="${a}"`)));
+  ok('the real preview answers in the shape the page reads', realPreview.status === 'success'
+     && ['has_config', 'has_secrets', 'has_wifi', 'user_fonts', 'plugin_uploads', 'plugins'].every(k => k in realPreview.data),
+     realPreview);
+  ok('the real list answers in the shape the page reads', realList.status === 'success' && Array.isArray(realList.data), realList);
+
+  const HOSTILE = '<img src=x onerror="window.pwned=1">';
+  const ZIP = 'ledmatrix-backup-host-20260930.zip';
+  const ODD = 'odd name #1 ' + HOSTILE + '.zip';
+  const preview = Object.assign({}, realPreview.data, {
+    has_config: true, has_secrets: false, has_wifi: true, user_fonts: ['a.bdf', HOSTILE], plugin_uploads: 3, plugins: [1, 2],
+  });
+  const listing = [
+    { filename: ZIP, size: 2048, created_at: '2026-09-30 12:00:00' },
+    { filename: ODD, size: 0, created_at: HOSTILE },
+  ];
+  const manifest = {
+    created_at: '2026-09-30T12:00:00', hostname: HOSTILE, ledmatrix_version: '3.8.0',
+    detected_contents: ['config', 'secrets'], plugins: [{ plugin_id: 'clock' }, { plugin_id: HOSTILE }],
+  };
+
+  const errs = [];
+  let navigations = 0;
+  const vc = new VirtualConsole();
+  vc.on('jsdomError', e => {
+    const msg = String(e.message || e).split('\n')[0];
+    // jsdom does not navigate; the export's download is that navigation.
+    if (/Not implemented: navigation/.test(msg)) { navigations++; return; }
+    errs.push(msg);
+  });
+  vc.on('error', (...a) => errs.push(a.join(' ')));
+  const dom = new JSDOM(`<!doctype html><html><body><div id="backup-restore-content">${partial}</div></body></html>`,
+    { url: BASE + '/', virtualConsole: vc });
+  const { window } = dom;
+  const doc = window.document;
+  const panel = doc.getElementById('backup-restore-content');
+
+  let mode = 'ok';
+  let restoreAnswer = null;
+  let aborted = 0;
+  const requests = [];
+  const pending = [];
+  function fakeFetch(url, init) {
+    requests.push({ url, method: init.method, body: init.body, signal: init.signal });
+    const respond = (status, body) => Promise.resolve({
+      status, ok: status >= 200 && status < 300,
+      headers: { get: () => null },
+      text: () => Promise.resolve(JSON.stringify(body)),
+    });
+    if (mode === 'hang') {
+      return new Promise((resolve, reject) => {
+        pending.push(() => resolve(respond(200, { status: 'success', data: [] })));
+        if (init.signal) init.signal.addEventListener('abort', () => {
+          aborted++;
+          const e = new Error('aborted'); e.name = 'AbortError'; reject(e);
+        });
+      });
+    }
+    if (url === '/api/v3/backup/preview') return respond(200, { status: 'success', data: preview });
+    if (url === '/api/v3/backup/list') return respond(200, { status: 'success', data: listing });
+    if (url === '/api/v3/backup/export') return respond(200, { status: 'success', filename: ZIP });
+    if (url === '/api/v3/backup/validate') return respond(200, { status: 'success', data: manifest });
+    if (url === '/api/v3/backup/restore') return restoreAnswer();
+    if (init.method === 'DELETE') return respond(200, { status: 'success' });
+    return respond(404, { status: 'error', message: 'unexpected ' + url });
+  }
+  const notes = [];
+  const registry = createRegistry({
+    document: doc,
+    context: { api: createApi({ fetch: fakeFetch }), notify: (m, t) => notes.push([m, t]) },
+  });
+  registry.register('backup-restore', backupPage);
+
+  const count = (url, method = 'GET') => requests.filter(r => r.url === url && r.method === method).length;
+  const lists = () => count('/api/v3/backup/list');
+  const $ = id => doc.getElementById(id);
+  const action = a => doc.querySelector(`button[data-action="${a}"]`);
+  const hidden = id => $(id).classList.contains('hidden');
+  async function swap() {
+    panel.dispatchEvent(new window.CustomEvent('htmx:beforeSwap', { bubbles: true, detail: { target: panel, shouldSwap: true } }));
+    panel.innerHTML = partial;
+    panel.dispatchEvent(new window.CustomEvent('htmx:afterSwap', { bubbles: true, detail: { target: panel } }));
+    await tick(20);
+  }
+  function pick(file) {
+    Object.defineProperty($('restore-file-input'), 'files', { value: file ? [file] : [], configurable: true });
+    $('restore-file-input').dispatchEvent(new window.Event('change', { bubbles: true }));
+  }
+
+  await registry.start();
+  await tick(20);
+
+  // ── first load ──────────────────────────────────────────────────────────
+  ok('one preview and one list request on start',
+     count('/api/v3/backup/preview') === 1 && lists() === 1, requests.map(r => r.url));
+  ok('the summary is drawn', /Main config: yes/.test($('export-preview').textContent)
+     && /Secrets: no/.test($('export-preview').textContent) && /Plugin image uploads: 3 file\(s\)/.test($('export-preview').textContent),
+     $('export-preview').textContent);
+  ok('a hostile font name is text', $('export-preview').textContent.includes(HOSTILE));
+  const rows = () => doc.querySelectorAll('#backup-history tbody tr');
+  ok('one history row per backup', rows().length === 2, rows().length);
+  ok('a hostile file name and date are text', rows()[1].textContent.includes(ODD) && rows()[1].textContent.includes(HOSTILE));
+  ok('...and created no element', !doc.querySelector('#backup-restore-content img') && !window.pwned);
+  ok('download links encode the name', rows()[1].querySelector('a').getAttribute('href')
+     === '/api/v3/backup/download/' + encodeURIComponent(ODD), rows()[1].querySelector('a').getAttribute('href'));
+  ok('delete buttons carry the exact name and no handler',
+     rows()[1].querySelector('button[data-action="delete"]').dataset.filename === ODD
+     && !rows()[1].querySelector('button').getAttribute('onclick'));
+
+  // ── repeated swaps ──────────────────────────────────────────────────────
+  const oldRefresh = action('refresh');
+  for (let i = 0; i < 5; i++) await swap();
+  ok('one list request per swap', lists() === 6, lists());
+  ok('one mounted page after five swaps', registry.list().length === 1, registry.list().length);
+  let before = lists();
+  action('refresh').click();
+  await tick(20);
+  ok('Refresh makes exactly one request (no duplicate listeners)', lists() === before + 1, lists() - before);
+  oldRefresh.click();
+  await tick(20);
+  ok('a swapped-out button does nothing', lists() === before + 1, lists() - before);
+
+  // ── delete ──────────────────────────────────────────────────────────────
+  let asked = null;
+  window.confirm = msg => { asked = msg; return false; };
+  rows()[1].querySelector('button[data-action="delete"]').click();
+  await tick(20);
+  ok('Delete asks first, naming the file', asked === 'Delete ' + ODD + '?', asked);
+  ok('cancel sends nothing', !requests.some(r => r.method === 'DELETE'));
+  window.confirm = () => true;
+  before = lists();
+  rows()[1].querySelector('button[data-action="delete"]').click();
+  await tick(20);
+  const deletes = requests.filter(r => r.method === 'DELETE');
+  ok('one DELETE request, to the encoded name', deletes.length === 1
+     && deletes[0].url === '/api/v3/backup/' + encodeURIComponent(ODD), deletes.map(d => d.url));
+  ok('the list reloads once', lists() === before + 1, lists() - before);
+  ok('the deletion is reported', notes.some(n => n[0] === 'Backup deleted' && n[1] === 'success'), notes);
+
+  // ── export ──────────────────────────────────────────────────────────────
+  before = lists();
+  action('export').click();
+  action('export').click(); // a second click while it is busy
+  ok('the export button is busy while it runs', $('export-backup-btn').disabled
+     && $('export-backup-btn').textContent.includes('Creating'));
+  await tick(30);
+  ok('one export request', count('/api/v3/backup/export', 'POST') === 1, count('/api/v3/backup/export', 'POST'));
+  ok('the new backup is reported', notes.some(n => n[0] === 'Backup created: ' + ZIP), notes);
+  ok('its download starts once', navigations === 1, navigations);
+  ok('the list reloads once', lists() === before + 1, lists() - before);
+  ok('the button comes back', !$('export-backup-btn').disabled
+     && $('export-backup-btn').textContent.trim() === 'Download backup', $('export-backup-btn').textContent);
+
+  // ── inspect ─────────────────────────────────────────────────────────────
+  notes.length = 0;
+  action('inspect').click();
+  await tick(20);
+  ok('Inspect with no file asks for one', notes[0] && notes[0][0] === 'Choose a backup file first', notes);
+  ok('...and sends nothing', count('/api/v3/backup/validate', 'POST') === 0);
+  const file = new window.File(['PK'], 'backup.zip', { type: 'application/zip' });
+  pick(file);
+  action('inspect').click();
+  await tick(20);
+  const validate = requests.filter(r => r.url === '/api/v3/backup/validate');
+  ok('one validate request', validate.length === 1, validate.length);
+  ok('it uploads the file as backup_file', validate[0] && validate[0].body instanceof window.FormData
+     && validate[0].body.get('backup_file').name === 'backup.zip');
+  ok('the contents are shown', !hidden('restore-preview')
+     && /Includes: config, secrets/.test($('restore-preview-body').textContent), $('restore-preview-body').textContent);
+  ok('a hostile host name and plugin id are text', $('restore-preview-body').textContent.includes(HOSTILE)
+     && !doc.querySelector('#restore-preview-body img'));
+
+  pick(new window.File(['PK2'], 'other.zip'));
+  ok('picking another file hides the old contents', hidden('restore-preview'));
+  notes.length = 0;
+  window.confirm = () => true;
+  action('restore').click();
+  await tick(20);
+  ok('Restore needs an inspected file', notes[0] && notes[0][0] === 'Inspect the file before restoring'
+     && count('/api/v3/backup/restore', 'POST') === 0, notes);
+
+  // ── restore ─────────────────────────────────────────────────────────────
+  pick(file);
+  action('inspect').click();
+  await tick(20);
+  $('opt-secrets').checked = false;
+  restoreAnswer = () => Promise.resolve({
+    status: 200, ok: true, headers: { get: () => null },
+    text: () => Promise.resolve(JSON.stringify({ status: 'success', data: {
+      success: true, restored: ['config', HOSTILE], skipped: ['secrets'], plugins_installed: [], plugins_failed: [], errors: [],
+    } })),
+  });
+  window.confirm = () => false;
+  action('restore').click();
+  await tick(20);
+  ok('Restore asks first', count('/api/v3/backup/restore', 'POST') === 0);
+  window.confirm = () => true;
+  notes.length = 0;
+  action('restore').click();
+  await tick(30);
+  const restores = requests.filter(r => r.url === '/api/v3/backup/restore');
+  ok('one restore request', restores.length === 1, restores.length);
+  const options = restores[0] && JSON.parse(restores[0].body.get('options'));
+  ok('it sends exactly the six options, as booleans', options && Object.keys(options).sort().join() ===
+     'reinstall_plugins,restore_config,restore_fonts,restore_plugin_uploads,restore_secrets,restore_wifi'
+     && options.restore_secrets === false && options.restore_config === true, options);
+  ok('...with the inspected file', restores[0] && restores[0].body.get('backup_file').name === 'backup.zip');
+  ok('a restore is not cancelled by a swap', restores[0] && restores[0].signal === undefined);
+  ok('the result is drawn', !hidden('restore-result') && /Restore complete/.test($('restore-result').textContent)
+     && /Skipped: secrets/.test($('restore-result').textContent) && /Restart the display service/.test($('restore-result').textContent),
+     $('restore-result').textContent);
+  ok('a hostile restored name is text', $('restore-result').textContent.includes(HOSTILE) && !doc.querySelector('#restore-result img'));
+  ok('...in green, reported once', $('restore-result').classList.contains('bg-green-50')
+     && notes.length === 1 && notes[0][0] === 'Restore complete' && notes[0][1] === 'success', notes);
+  ok('the restore button comes back', !$('run-restore-btn').disabled && $('run-restore-btn').textContent.trim() === 'Restore now');
+
+  restoreAnswer = () => Promise.resolve({
+    status: 500, ok: false, headers: { get: () => null },
+    text: () => Promise.resolve(JSON.stringify({ status: 'error', message: 'Restore incomplete — failed: secrets',
+                                                 data: { errors: ['secrets'] } })),
+  });
+  notes.length = 0;
+  action('restore').click();
+  await tick(30);
+  ok('a failed restore reports the server\'s message', notes[0] && notes[0][0] === 'Restore failed: Restore incomplete — failed: secrets'
+     && notes[0][1] === 'error', notes);
+
+  action('cancel').click();
+  ok('Cancel hides the contents and forgets the file', hidden('restore-preview') && hidden('restore-result')
+     && $('restore-file-input').value === '');
+  notes.length = 0;
+  action('restore').click();
+  await tick(20);
+  ok('...so Restore asks for an inspection again', notes[0] && notes[0][0] === 'Inspect the file before restoring', notes);
+
+  // ── reads in flight are cancelled by a swap ─────────────────────────────
+  mode = 'hang';
+  action('refresh').click();
+  await tick(5);
+  mode = 'ok';
+  await swap();
+  ok('the swap cancelled the list request', aborted === 1, aborted);
+  pending.forEach(resolve => resolve());
+  await tick(20);
+  ok('the new page drew its own list', rows().length === 2, rows().length);
+
+  // ── the old globals ─────────────────────────────────────────────────────
+  before = lists();
+  await backupPage.loadBackupList();
+  ok('loadBackupList() reloads once', lists() === before + 1, lists() - before);
+  notes.length = 0;
+  await backupPage.validateRestoreFile();
+  ok('validateRestoreFile() inspects', notes[0] && notes[0][0] === 'Choose a backup file first', notes);
+  const exportsBefore = count('/api/v3/backup/export', 'POST');
+  await backupPage.exportBackup();
+  ok('exportBackup() exports once', count('/api/v3/backup/export', 'POST') === exportsBefore + 1);
+  ok('clearRestore and runRestore are there', typeof backupPage.clearRestore === 'function'
+     && typeof backupPage.runRestore === 'function');
+
+  ok('no DOM errors', errs.length === 0, errs);
+
+  console.log(`\n${pass} passed, ${fail} failed`);
+  process.exit(fail ? 1 : 0);
+})().catch(e => { console.error(e); process.exit(1); });
diff --git a/test/js/dom/test_durations_page.js b/test/js/dom/test_durations_page.js
new file mode 100644
index 000000000..0dfc59e47
--- /dev/null
+++ b/test/js/dom/test_durations_page.js
@@ -0,0 +1,178 @@
+// The Rotation & Durations tab as a page module
+// (static/v3/js/pages/durations.js), in a real DOM (jsdom) with the real
+// server-rendered partial, the real plugin-order-list widget and the real
+// /api/v3/plugins/installed payload shape. Built like test_cache_page.js:
+//
+//   * the partial ships no <script>; its root is data-page="durations"
+//   * the rotation list loads once per swap-in, however many swaps came first
+//   * a list request still in flight when the page is swapped away is
+//     cancelled and draws nothing
+//   * a widget that loads late is waited for, and a page swapped away while
+//     waiting starts nothing
+//   * plugin names reach the page as text
+const http = require('http');
+const fs = require('fs');
+const path = require('path');
+const { pathToFileURL } = require('url');
+const { JSDOM, VirtualConsole } = require('jsdom');
+
+const BASE = process.env.BASE || 'http://localhost:5000';
+const JS = path.resolve(__dirname, '../../../web_interface/static/v3/js');
+const get = p => new Promise((res, rej) =>
+  http.get(BASE + p, r => { let d = ''; r.on('data', c => d += c); r.on('end', () => res(d)); }).on('error', rej));
+const load = f => import(pathToFileURL(path.join(JS, f)).href);
+const tick = ms => new Promise(r => setTimeout(r, ms || 0));
+
+let pass = 0, fail = 0;
+const ok = (l, c, x) => c ? (pass++, console.log('  ok   ' + l))
+  : (fail++, console.log('  FAIL ' + l + (x !== undefined ? '  -> ' + JSON.stringify(x).slice(0, 300) : '')));
+
+(async () => {
+  const partial = await get('/partials/durations');
+  const real = JSON.parse(await get('/api/v3/plugins/installed'));
+  const { createRegistry } = await load('core/registry.js');
+  const { createApi } = await load('core/api.js');
+  const durationsPage = await load('pages/durations.js');
+  const widgetSource = fs.readFileSync(path.join(JS, 'widgets/plugin-order-list.js'), 'utf8');
+
+  console.log('\n── Rotation & Durations tab: page module (real DOM) ──');
+  ok('the partial ships no inline script', !/<script/i.test(partial));
+  ok('the partial root is data-page="durations"', /data-page="durations"/.test(partial));
+  ok('the rotation list and its hidden input are in the partial',
+     /id="rotation_plugin_order"/.test(partial) && /id="rotation_plugin_order_value"/.test(partial));
+  ok('the real API answers in the shape the widget reads',
+     real.status === 'success' && real.data && Array.isArray(real.data.plugins), real);
+
+  const HOSTILE = '<img src=x onerror="window.pwned=1">';
+  const plugins = [
+    { id: 'clock', name: 'Clock', enabled: true },
+    { id: 'weather', name: HOSTILE, enabled: true },
+    { id: 'stocks', name: 'Stocks', enabled: true },
+    { id: 'off', name: 'Disabled one', enabled: false },
+  ];
+
+  const errs = [];
+  const vc = new VirtualConsole();
+  vc.on('jsdomError', e => errs.push(String(e.message || e).split('\n')[0]));
+  vc.on('error', (...a) => errs.push(a.join(' ')));
+  const dom = new JSDOM(`<!doctype html><html><body><div id="durations-content">${partial}</div></body></html>`,
+    { url: BASE + '/', virtualConsole: vc, runScripts: 'outside-only' });
+  const { window } = dom;
+  const doc = window.document;
+  const panel = doc.getElementById('durations-content');
+
+  let mode = 'ok';
+  const requests = [];
+  const pending = [];
+  let aborted = 0;
+  function fakeFetch(url, init = {}) {
+    requests.push({ url, method: init.method || 'GET' });
+    const respond = (status, body) => Promise.resolve({
+      status, ok: status >= 200 && status < 300,
+      headers: { get: () => null },
+      json: () => Promise.resolve(body),
+      text: () => Promise.resolve(JSON.stringify(body)),
+    });
+    if (mode === 'hang') {
+      return new Promise((resolve, reject) => {
+        pending.push(resolve);
+        if (init.signal) init.signal.addEventListener('abort', () => {
+          aborted++;
+          const e = new Error('aborted'); e.name = 'AbortError'; reject(e);
+        });
+      });
+    }
+    return respond(200, { status: 'success', data: { plugins } });
+  }
+  // The widget is a classic script: it calls the window's own fetch.
+  window.fetch = fakeFetch;
+  window.eval(widgetSource);
+  const widget = window.PluginOrderList;
+  ok('the widget script defines PluginOrderList', !!(widget && widget.init));
+
+  const registry = createRegistry({
+    document: doc,
+    context: { api: createApi({ fetch: fakeFetch }), notify: () => {} },
+  });
+  registry.register('durations', durationsPage);
+
+  const lists = () => requests.filter(r => r.url === '/api/v3/plugins/installed').length;
+  const $ = id => doc.getElementById(id);
+  const order = () => JSON.parse($('rotation_plugin_order_value').value || '[]');
+  async function swap() {
+    panel.dispatchEvent(new window.CustomEvent('htmx:beforeSwap', { bubbles: true, detail: { target: panel, shouldSwap: true } }));
+    panel.innerHTML = partial;
+    panel.dispatchEvent(new window.CustomEvent('htmx:afterSwap', { bubbles: true, detail: { target: panel } }));
+    await tick(20);
+  }
+
+  await registry.start();
+  await tick(20);
+
+  // ── first load ──────────────────────────────────────────────────────────
+  ok('one plugin-list request on start', lists() === 1, lists());
+  let rows = doc.querySelectorAll('#rotation_plugin_order .plugin-order-item');
+  ok('one row per enabled plugin', rows.length === 3, rows.length);
+  ok('the hidden input holds the order', order().length === 3 && order().includes('clock'), order());
+  ok('a hostile plugin name is shown as text', $('rotation_plugin_order').textContent.includes(HOSTILE));
+  ok('...and created no element', !doc.querySelector('#rotation_plugin_order img') && !window.pwned);
+
+  // ── repeated swaps ──────────────────────────────────────────────────────
+  for (let i = 0; i < 5; i++) await swap();
+  ok('one plugin-list request per swap', lists() === 6, lists());
+  ok('one mounted page after five swaps', registry.list().length === 1, registry.list().length);
+  rows = doc.querySelectorAll('#rotation_plugin_order .plugin-order-item');
+  ok('the list is drawn once, not stacked', rows.length === 3, rows.length);
+  const before = order();
+  const down = rows[0].querySelector('button[aria-label^="Move"][aria-label$="down"]');
+  down.click();
+  await tick(5);
+  const after = order();
+  ok('Move down moves one place (one listener)',
+     after[0] === before[1] && after[1] === before[0] && after[2] === before[2], [before, after]);
+  ok('reordering makes no request', lists() === 6, lists());
+
+  // ── in flight when swapped away ─────────────────────────────────────────
+  mode = 'hang';
+  await swap();
+  ok('a request is in flight', pending.length === 1, pending.length);
+  mode = 'ok';
+  await swap();
+  await tick(20);
+  ok('the new page drew its own list', doc.querySelectorAll('#rotation_plugin_order .plugin-order-item').length === 3);
+  ok('the cancelled request drew no error', !/Error loading plugins/.test($('rotation_plugin_order').textContent));
+  ok('the swap cancelled the request (ctx.signal reaches the widget)', aborted === 1, aborted);
+  // Answer it late anyway, with one plugin: the new page's list is untouched.
+  pending[0]({ status: 200, ok: true, headers: { get: () => null },
+               json: () => Promise.resolve({ status: 'success', data: { plugins: [plugins[0]] } }) });
+  await tick(20);
+  ok('a late answer to the cancelled request redraws nothing',
+     doc.querySelectorAll('#rotation_plugin_order .plugin-order-item').length === 3,
+     doc.querySelectorAll('#rotation_plugin_order .plugin-order-item').length);
+
+  // ── the widget loads late ───────────────────────────────────────────────
+  delete window.PluginOrderList;
+  const beforeLate = lists();
+  await swap();
+  ok('no request while the widget is missing', lists() === beforeLate, lists() - beforeLate);
+  window.PluginOrderList = widget;
+  await tick(150);
+  ok('starts once the widget arrives', lists() === beforeLate + 1, lists() - beforeLate);
+
+  delete window.PluginOrderList;
+  await swap();
+  const beforeGone = lists();
+  // Swapped to another tab's content while still waiting for the widget.
+  panel.dispatchEvent(new window.CustomEvent('htmx:beforeSwap', { bubbles: true, detail: { target: panel, shouldSwap: true } }));
+  panel.innerHTML = '<p>another tab</p>';
+  panel.dispatchEvent(new window.CustomEvent('htmx:afterSwap', { bubbles: true, detail: { target: panel } }));
+  window.PluginOrderList = widget;
+  await tick(250);
+  ok('a page swapped away while waiting starts nothing', lists() === beforeGone, lists() - beforeGone);
+  ok('nothing left mounted', registry.list().length === 0, registry.list().length);
+
+  ok('no DOM errors', errs.length === 0, errs);
+
+  console.log(`\n${pass} passed, ${fail} failed`);
+  process.exit(fail ? 1 : 0);
+})().catch(e => { console.error(e); process.exit(1); });
diff --git a/test/js/dom/test_operation_history_page.js b/test/js/dom/test_operation_history_page.js
new file mode 100644
index 000000000..5645281d9
--- /dev/null
+++ b/test/js/dom/test_operation_history_page.js
@@ -0,0 +1,231 @@
+// The Operation History tab as a page module
+// (static/v3/js/pages/operation-history.js), in a real DOM (jsdom) with the
+// real server-rendered partial and the real API's payload shape. Built like
+// test_cache_page.js:
+//
+//   * the partial ships no <script>; its root is data-page="operation-history"
+//   * one history request per swap-in, and after five swaps Refresh, Clear,
+//     Next and the filters each act exactly once
+//   * the plugin filter is filled once per swap-in, not once per swap so far
+//   * a request in flight when the page is swapped away is cancelled
+//   * plugin ids, users and error messages from the log are shown as text
+const http = require('http');
+const path = require('path');
+const { pathToFileURL } = require('url');
+const { JSDOM, VirtualConsole } = require('jsdom');
+
+const BASE = process.env.BASE || 'http://localhost:5000';
+const JS = path.resolve(__dirname, '../../../web_interface/static/v3/js');
+const get = p => new Promise((res, rej) =>
+  http.get(BASE + p, r => { let d = ''; r.on('data', c => d += c); r.on('end', () => res(d)); }).on('error', rej));
+const load = f => import(pathToFileURL(path.join(JS, f)).href);
+const tick = ms => new Promise(r => setTimeout(r, ms || 0));
+
+let pass = 0, fail = 0;
+const ok = (l, c, x) => c ? (pass++, console.log('  ok   ' + l))
+  : (fail++, console.log('  FAIL ' + l + (x !== undefined ? '  -> ' + JSON.stringify(x).slice(0, 300) : '')));
+
+(async () => {
+  const partial = await get('/partials/operation-history');
+  const real = JSON.parse(await get('/api/v3/plugins/operation/history?limit=1000'));
+  const { createRegistry } = await load('core/registry.js');
+  const { createApi } = await load('core/api.js');
+  const historyPage = await load('pages/operation-history.js');
+
+  console.log('\n── Operation History tab: page module (real DOM) ──');
+  ok('the partial ships no inline script', !/<script/i.test(partial));
+  ok('the partial root is data-page="operation-history"', /data-page="operation-history"/.test(partial));
+  ok('the real API answers in the shape the page reads',
+     real.status === 'success' && Array.isArray(real.data), real);
+  const realKeys = real.data.length ? Object.keys(real.data[0]) : null;
+  ok('a real record has the fields the page reads',
+     !realKeys || ['operation_type', 'plugin_id', 'status', 'timestamp'].every(k => realKeys.includes(k)), realKeys);
+
+  const HOSTILE = '<img src=x onerror="window.pwned=1">';
+  function record(i, extra) {
+    return Object.assign({
+      operation_id: 'op' + i, operation_type: ['install', 'update', 'enable'][i % 3],
+      plugin_id: i % 2 ? 'clock' : 'weather', status: i % 4 === 0 ? 'error' : 'completed',
+      user: 'web', timestamp: 1790000000 * 1000 - i * 60000, details: { version: '1.' + i },
+    }, extra || {});
+  }
+  let records = [
+    record(0, { plugin_id: HOSTILE, error: HOSTILE + ' went wrong', user: HOSTILE,
+                details: { commit: 'abcdef1234', previous_commit: '1234567890' } }),
+  ].concat(Array.from({ length: 119 }, (_, i) => record(i + 1)));
+
+  const errs = [];
+  const vc = new VirtualConsole();
+  vc.on('jsdomError', e => errs.push(String(e.message || e).split('\n')[0]));
+  vc.on('error', (...a) => errs.push(a.join(' ')));
+  const dom = new JSDOM(`<!doctype html><html><body><div id="operation-history-content">${partial}</div></body></html>`,
+    { url: BASE + '/', virtualConsole: vc });
+  const { window } = dom;
+  const doc = window.document;
+  const panel = doc.getElementById('operation-history-content');
+
+  let mode = 'ok';
+  let aborted = 0;
+  const requests = [];
+  function fakeFetch(url, init) {
+    requests.push({ url, method: init.method });
+    const respond = (status, body, headers = {}) => Promise.resolve({
+      status, ok: status >= 200 && status < 300,
+      headers: { get: n => headers[n] || null },
+      text: () => Promise.resolve(JSON.stringify(body)),
+    });
+    if (url === '/api/v3/plugins/installed') {
+      return respond(200, { status: 'success', data: { plugins: [{ id: 'clock' }, { id: 'weather' }, { id: HOSTILE }] } });
+    }
+    if (init.method === 'DELETE') return respond(200, { status: 'success', message: 'Operation history cleared' });
+    if (mode === 'network') return Promise.reject(new TypeError('Failed to fetch'));
+    if (mode === 'error') return respond(500, { status: 'error', message: 'Operation history not initialized' });
+    if (mode === 'login') return respond(401, { status: 'error' }, { 'X-LEDMatrix-Login': '/login' });
+    if (mode === 'hang') {
+      return new Promise((resolve, reject) => {
+        init.signal.addEventListener('abort', () => {
+          aborted++;
+          const e = new Error('aborted'); e.name = 'AbortError'; reject(e);
+        });
+      });
+    }
+    return respond(200, { status: 'success', data: records });
+  }
+  const notes = [];
+  const registry = createRegistry({
+    document: doc,
+    context: { api: createApi({ fetch: fakeFetch }), notify: (m, t) => notes.push([m, t]) },
+  });
+  registry.register('operation-history', historyPage);
+
+  const count = (url, method = 'GET') => requests.filter(r => r.url === url && r.method === method).length;
+  const HISTORY = '/api/v3/plugins/operation/history?limit=1000';
+  const histories = () => count(HISTORY);
+  const $ = id => doc.getElementById(id);
+  const rows = () => doc.querySelectorAll('#history-table-body tr');
+  const showing = () => [$('history-start').textContent, $('history-end').textContent, $('history-total').textContent].join('/');
+  async function swap() {
+    panel.dispatchEvent(new window.CustomEvent('htmx:beforeSwap', { bubbles: true, detail: { target: panel, shouldSwap: true } }));
+    panel.innerHTML = partial;
+    panel.dispatchEvent(new window.CustomEvent('htmx:afterSwap', { bubbles: true, detail: { target: panel } }));
+    await tick(20);
+  }
+  function change(id, value) {
+    $(id).value = value;
+    $(id).dispatchEvent(new window.Event('change', { bubbles: true }));
+  }
+
+  await registry.start();
+  await tick(20);
+
+  // ── first load ──────────────────────────────────────────────────────────
+  ok('one history request on start', histories() === 1, histories());
+  ok('one plugin-list request on start', count('/api/v3/plugins/installed') === 1);
+  ok('the first page holds 50 rows', rows().length === 50, rows().length);
+  ok('the counters say 1 to 50 of 120', showing() === '1/50/120', showing());
+  ok('Previous is off on the first page', $('history-prev-btn').disabled && !$('history-next-btn').disabled);
+  const first = rows()[0];
+  ok('a hostile plugin id, user and error are shown as text',
+     first.textContent.includes(HOSTILE) && first.textContent.includes(HOSTILE + ' went wrong'));
+  ok('...and created no element', !doc.querySelector('#history-table-body img') && !window.pwned);
+  ok('a hostile plugin id in the filter is text too',
+     [...$('history-plugin-filter').options].some(o => o.value === HOSTILE && o.textContent === HOSTILE));
+  ok('details are summarised', first.textContent.includes('commit: abcdef1') && first.textContent.includes('from: 1234567'));
+  ok('"error" is shown as failed, in red',
+     first.querySelectorAll('span')[1].textContent === 'failed' && first.querySelector('.bg-red-100'));
+
+  // ── repeated swaps ──────────────────────────────────────────────────────
+  const oldRefresh = $('refresh-history-btn');
+  for (let i = 0; i < 5; i++) await swap();
+  ok('one history request per swap', histories() === 6, histories());
+  ok('one mounted page after five swaps', registry.list().length === 1, registry.list().length);
+  ok('the plugin filter is filled once', $('history-plugin-filter').options.length === 4,
+     $('history-plugin-filter').options.length);
+
+  let before = histories();
+  $('refresh-history-btn').click();
+  await tick(20);
+  ok('Refresh makes exactly one request (no duplicate listeners)', histories() === before + 1, histories() - before);
+  oldRefresh.click();
+  await tick(20);
+  ok('a swapped-out button does nothing', histories() === before + 1, histories() - before);
+
+  $('history-next-btn').click();
+  ok('Next moves one page', showing() === '51/100/120', showing());
+  $('history-next-btn').click();
+  ok('...and the last page is short', showing() === '101/120/120' && rows().length === 20, showing());
+  ok('Next is off on the last page', $('history-next-btn').disabled);
+  $('refresh-history-btn').click();
+  await tick(20);
+  ok('Refresh keeps the page', showing() === '101/120/120', showing());
+  $('history-prev-btn').click();
+  ok('Previous moves one page', showing() === '51/100/120', showing());
+
+  // ── filters ─────────────────────────────────────────────────────────────
+  change('history-status-filter', 'failed');
+  ok('the status filter matches "error" records as failed', showing() === '1/30/30', showing());
+  change('history-status-filter', '');
+  change('history-plugin-filter', 'weather');
+  ok('the plugin filter', [...rows()].every(r => r.children[2].textContent === 'weather') && showing() === '1/50/59', showing());
+  change('history-plugin-filter', '');
+  $('history-search').value = 'no such thing';
+  $('history-search').dispatchEvent(new window.Event('input', { bubbles: true }));
+  ok('search waits for the typing to stop', rows().length === 50);
+  await tick(350);
+  ok('a search with no match says so', rows().length === 1 && rows()[0].textContent.includes('No operations found'));
+  ok('...and the counters follow', showing() === '0/0/0', showing());
+  $('history-search').value = '';
+  $('history-search').dispatchEvent(new window.Event('input', { bubbles: true }));
+  await swap(); // swapped away with the search still pending
+  await tick(350);
+  ok('a pending search on a swapped-out page does nothing', errs.length === 0, errs);
+
+  // ── clear ───────────────────────────────────────────────────────────────
+  let asked = null;
+  window.confirm = msg => { asked = msg; return false; };
+  $('clear-history-btn').click();
+  await tick(20);
+  ok('Clear asks first', asked && /clear the operation history/.test(asked), asked);
+  ok('cancel sends nothing', count('/api/v3/plugins/operation/history', 'DELETE') === 0);
+  window.confirm = () => true;
+  $('clear-history-btn').click();
+  await tick(20);
+  ok('one DELETE request', count('/api/v3/plugins/operation/history', 'DELETE') === 1,
+     count('/api/v3/plugins/operation/history', 'DELETE'));
+  ok('the table empties', rows().length === 1 && showing() === '0/0/0', showing());
+
+  // ── states ──────────────────────────────────────────────────────────────
+  notes.length = 0;
+  mode = 'error';
+  $('refresh-history-btn').click(); await tick(20);
+  ok('an API error is reported', notes.length === 1 && notes[0][0] === 'Failed to load operation history' && notes[0][1] === 'error', notes);
+  mode = 'network';
+  $('refresh-history-btn').click(); await tick(20);
+  ok('a network failure is reported', notes.length === 2 && notes[1][0] === 'Error loading operation history', notes);
+  mode = 'login';
+  $('refresh-history-btn').click(); await tick(20);
+  ok('the login redirect reports nothing', notes.length === 2, notes);
+
+  // ── in flight when swapped away ─────────────────────────────────────────
+  mode = 'hang';
+  $('refresh-history-btn').click(); await tick(5);
+  mode = 'ok';
+  await swap();
+  ok('the swap cancelled the request', aborted === 1, aborted);
+  ok('the new page drew its own list', rows().length === 50 && notes.length === 2, [rows().length, notes]);
+
+  // ── PluginAPI's cached installed list, when it is loaded ────────────────
+  let pluginApiCalls = 0;
+  window.PluginAPI = { getInstalledPlugins: () => { pluginApiCalls++; return Promise.resolve([{ id: 'cached' }]); } };
+  const directBefore = count('/api/v3/plugins/installed');
+  await swap();
+  ok('the plugin filter uses PluginAPI when it is there', pluginApiCalls === 1
+     && count('/api/v3/plugins/installed') === directBefore, [pluginApiCalls, count('/api/v3/plugins/installed') - directBefore]);
+  ok('...and is filled from it', [...$('history-plugin-filter').options].map(o => o.value).join() === ',cached');
+  delete window.PluginAPI;
+
+  ok('no DOM errors', errs.length === 0, errs);
+
+  console.log(`\n${pass} passed, ${fail} failed`);
+  process.exit(fail ? 1 : 0);
+})().catch(e => { console.error(e); process.exit(1); });
diff --git a/test/js/dom/test_raw_json_page.js b/test/js/dom/test_raw_json_page.js
new file mode 100644
index 000000000..c7d81661b
--- /dev/null
+++ b/test/js/dom/test_raw_json_page.js
@@ -0,0 +1,187 @@
+// The Config Editor tab as a page module (static/v3/js/pages/raw-json.js), in
+// a real DOM (jsdom) with the real server-rendered partial and the real
+// endpoints' answers. Built like test_cache_page.js:
+//
+//   * the partial ships no <script> and no onclick; its root is
+//     data-page="raw-json" and its buttons name an action and an editor
+//   * after five swaps, each Save makes exactly one request and each
+//     Format / Validate acts once
+//   * invalid JSON is never sent, and the parser's message is shown as text
+//   * a save is a write: a swap does not cancel it, and its result is still
+//     reported
+//   * the old globals' entry points still work
+const http = require('http');
+const path = require('path');
+const { pathToFileURL } = require('url');
+const { JSDOM, VirtualConsole } = require('jsdom');
+
+const BASE = process.env.BASE || 'http://localhost:5000';
+const JS = path.resolve(__dirname, '../../../web_interface/static/v3/js');
+const get = p => new Promise((res, rej) =>
+  http.get(BASE + p, r => { let d = ''; r.on('data', c => d += c); r.on('end', () => res(d)); }).on('error', rej));
+const load = f => import(pathToFileURL(path.join(JS, f)).href);
+const tick = ms => new Promise(r => setTimeout(r, ms || 0));
+
+let pass = 0, fail = 0;
+const ok = (l, c, x) => c ? (pass++, console.log('  ok   ' + l))
+  : (fail++, console.log('  FAIL ' + l + (x !== undefined ? '  -> ' + JSON.stringify(x).slice(0, 300) : '')));
+
+(async () => {
+  const partial = await get('/partials/raw-json');
+  const { createRegistry } = await load('core/registry.js');
+  const { createApi } = await load('core/api.js');
+  const rawPage = await load('pages/raw-json.js');
+
+  console.log('\n── Config Editor tab: page module (real DOM) ──');
+  ok('the partial ships no inline script', !/<script/i.test(partial));
+  ok('the partial has no inline handlers', !/onclick=/i.test(partial));
+  ok('the partial root is data-page="raw-json"', /data-page="raw-json"/.test(partial));
+  ok('six buttons name an action and an editor',
+     (partial.match(/data-action="(format|validate|save)" data-editor="(main|secrets)"/g) || []).length === 6);
+
+  const errs = [];
+  const vc = new VirtualConsole();
+  vc.on('jsdomError', e => errs.push(String(e.message || e).split('\n')[0]));
+  vc.on('error', (...a) => errs.push(a.join(' ')));
+  const dom = new JSDOM(`<!doctype html><html><body><div id="config-editor-content">${partial}</div></body></html>`,
+    { url: BASE + '/', virtualConsole: vc });
+  const { window } = dom;
+  const doc = window.document;
+  const panel = doc.getElementById('config-editor-content');
+
+  let mode = 'ok';
+  const requests = [];
+  const pending = [];
+  function fakeFetch(url, init) {
+    requests.push({ url, method: init.method, body: init.body, signal: init.signal });
+    const respond = (status, body) => Promise.resolve({
+      status, ok: status >= 200 && status < 300,
+      headers: { get: () => null },
+      text: () => Promise.resolve(JSON.stringify(body)),
+    });
+    if (mode === 'network') return Promise.reject(new TypeError('Failed to fetch'));
+    if (mode === 'error') return respond(400, { status: 'error', message: 'Configuration must be a JSON object' });
+    if (mode === 'hang') return new Promise(resolve => pending.push(() => resolve(respond(200, { status: 'success' }))));
+    return respond(200, { status: 'success', message: 'Main configuration saved successfully' });
+  }
+  const notes = [];
+  const registry = createRegistry({
+    document: doc,
+    context: { api: createApi({ fetch: fakeFetch }), notify: (m, t) => notes.push([m, t]) },
+  });
+  registry.register('raw-json', rawPage);
+
+  const $ = id => doc.getElementById(id);
+  const button = (action, editor) => doc.querySelector(`button[data-action="${action}"][data-editor="${editor}"]`);
+  const posts = url => requests.filter(r => r.url === url && r.method === 'POST');
+  async function swap() {
+    panel.dispatchEvent(new window.CustomEvent('htmx:beforeSwap', { bubbles: true, detail: { target: panel, shouldSwap: true } }));
+    panel.innerHTML = partial;
+    panel.dispatchEvent(new window.CustomEvent('htmx:afterSwap', { bubbles: true, detail: { target: panel } }));
+    await tick(20);
+  }
+  function type(id, text) {
+    $(id).value = text;
+    $(id).dispatchEvent(new window.Event('input', { bubbles: true }));
+  }
+
+  await registry.start();
+  await tick(20);
+
+  // ── first load ──────────────────────────────────────────────────────────
+  ok('the real files parse', (() => { try { JSON.parse($('main-config-editor').value); JSON.parse($('secrets-config-editor').value); return true; } catch (e) { return false; } })());
+  ok('both editors are validated on start',
+     $('main-config-validation').textContent.trim() === 'Valid JSON' && $('secrets-config-validation').textContent.trim() === 'Valid JSON',
+     [$('main-config-validation').textContent, $('secrets-config-validation').textContent]);
+  ok('nothing is requested on start', requests.length === 0, requests.length);
+
+  // ── repeated swaps ──────────────────────────────────────────────────────
+  const oldSave = button('save', 'main');
+  for (let i = 0; i < 5; i++) await swap();
+  ok('one mounted page after five swaps', registry.list().length === 1, registry.list().length);
+
+  type('main-config-editor', '{"display": {"brightness": 50}, "note": "a\\"b"}');
+  button('save', 'main').click();
+  await tick(20);
+  ok('Save makes exactly one request (no duplicate listeners)', posts('/api/v3/config/raw/main').length === 1,
+     posts('/api/v3/config/raw/main').length);
+  const sent = posts('/api/v3/config/raw/main')[0];
+  ok('it posts the parsed file as JSON', sent && JSON.parse(sent.body).note === 'a"b' && JSON.parse(sent.body).display.brightness === 50);
+  ok('success is reported once', notes.length === 1 && notes[0][0] === 'config.json saved successfully!' && notes[0][1] === 'success', notes);
+  oldSave.click();
+  await tick(20);
+  ok('a swapped-out button does nothing', posts('/api/v3/config/raw/main').length === 1);
+
+  button('save', 'secrets').click();
+  await tick(20);
+  ok('Save on the secrets editor posts to the secrets endpoint, once', posts('/api/v3/config/raw/secrets').length === 1);
+  ok('...and names that file', notes[1] && notes[1][0] === 'config_secrets.json saved successfully!', notes);
+
+  // ── format and validate ─────────────────────────────────────────────────
+  notes.length = 0;
+  type('main-config-editor', '{"a":1,"b":[1,2]}');
+  button('format', 'main').click();
+  ok('Format re-indents by four spaces', $('main-config-editor').value === '{\n    "a": 1,\n    "b": [\n        1,\n        2\n    ]\n}',
+     $('main-config-editor').value);
+  ok('...and says so once', notes.length === 1 && notes[0][0] === 'JSON formatted successfully!', notes);
+  button('validate', 'main').click();
+  ok('Validate shows the detailed box', $('main-config-validation').textContent.includes('JSON is valid!'));
+  ok('...and says so once', notes.length === 2 && notes[1][0] === 'JSON validation successful!', notes);
+
+  // ── invalid JSON ────────────────────────────────────────────────────────
+  const HOSTILE = '{"x": <img src=x onerror="window.pwned=1">';
+  type('main-config-editor', HOSTILE);
+  ok('typing re-validates', /^Invalid JSON: /.test($('main-config-validation').textContent.trim()),
+     $('main-config-validation').textContent);
+  ok('the parser message is text, not markup', !doc.querySelector('#main-config-validation img') && !window.pwned);
+  notes.length = 0;
+  const postsBefore = requests.length;
+  button('save', 'main').click();
+  await tick(20);
+  ok('invalid JSON is not sent', requests.length === postsBefore);
+  ok('...and the user is told', notes.length === 1 && notes[0][0] === 'Invalid JSON! Please fix errors before saving.', notes);
+  button('format', 'main').click();
+  ok('Format refuses invalid JSON', $('main-config-editor').value === HOSTILE && /^Cannot format invalid JSON/.test(notes[1][0]), notes);
+  button('validate', 'main').click();
+  ok('Validate shows the error box', $('main-config-validation').textContent.includes('Invalid JSON syntax')
+     && !doc.querySelector('#main-config-validation img'));
+
+  // ── server answers ──────────────────────────────────────────────────────
+  type('main-config-editor', '{"a": 1}');
+  notes.length = 0;
+  mode = 'error';
+  button('save', 'main').click(); await tick(20);
+  ok('a refused save shows the server\'s message', notes[0] && notes[0][0] === 'Error saving config.json: Configuration must be a JSON object', notes);
+  mode = 'network';
+  button('save', 'main').click(); await tick(20);
+  ok('a network failure says so', notes[1] && notes[1][0] === 'Error saving config.json: Failed to fetch', notes);
+
+  // ── a save is a write: a swap does not cancel it ────────────────────────
+  mode = 'hang';
+  notes.length = 0;
+  button('save', 'main').click(); await tick(5);
+  const inFlight = requests[requests.length - 1];
+  ok('the save carries no page signal', inFlight.signal === undefined);
+  mode = 'ok';
+  await swap();
+  pending.forEach(resolve => resolve());
+  await tick(20);
+  ok('its result is still reported after the swap', notes.length === 1 && notes[0][1] === 'success', notes);
+
+  // ── the old globals ─────────────────────────────────────────────────────
+  type('main-config-editor', '[1,2]');
+  ok('validateJSON(editorId) answers synchronously', rawPage.validateJSON('main-config-editor') === true);
+  type('main-config-editor', '[1,');
+  ok('...false for invalid JSON', rawPage.validateJSON('main-config-editor') === false);
+  type('secrets-config-editor', '{"k":"v"}');
+  rawPage.formatJson('secrets-config-editor', 'secrets-config-validation');
+  ok('formatJson(editorId, validationId) formats that editor', $('secrets-config-editor').value === '{\n    "k": "v"\n}');
+  const before = posts('/api/v3/config/raw/secrets').length;
+  await rawPage.saveSecretsConfig();
+  ok('saveSecretsConfig() saves once', posts('/api/v3/config/raw/secrets').length === before + 1);
+
+  ok('no DOM errors', errs.length === 0, errs);
+
+  console.log(`\n${pass} passed, ${fail} failed`);
+  process.exit(fail ? 1 : 0);
+})().catch(e => { console.error(e); process.exit(1); });
diff --git a/test/js/run_all.js b/test/js/run_all.js
index bcb0c7e39..411225015 100755
--- a/test/js/run_all.js
+++ b/test/js/run_all.js
@@ -25,7 +25,9 @@ const UNIT = ['unit/test_list_filter.js', 'unit/test_render_cards.js',
               'unit/test_store_registry_fields.js', 'unit/test_restart_banner.js',
               'unit/test_page_registry.js', 'unit/test_core_modules.js'];
 const DOM = ['dom/test_installed_dom.js', 'dom/test_store_dom.js', 'dom/test_no_double_fetch.js',
-             'dom/test_tools_sections.js', 'dom/test_cache_page.js'];
+             'dom/test_tools_sections.js', 'dom/test_cache_page.js',
+             'dom/test_durations_page.js', 'dom/test_operation_history_page.js',
+             'dom/test_raw_json_page.js', 'dom/test_backup_restore_page.js'];
 
 function reachable(url) {
   return new Promise(res => {
diff --git a/test/js/unit/test_core_modules.js b/test/js/unit/test_core_modules.js
index fa719e922..3554c5b10 100644
--- a/test/js/unit/test_core_modules.js
+++ b/test/js/unit/test_core_modules.js
@@ -51,6 +51,10 @@ async function rejection(promise) {
     const controller = new AbortController();
     await api.get('/api/v3/x', { signal: controller.signal });
     ok('the signal is passed to fetch', calls[2][1].signal === controller.signal);
+    const upload = { kind: 'form-data' };
+    await api.request('POST', '/api/v3/backup/validate', { body: upload });
+    ok('a raw body (an upload) is sent as it is, with no JSON Content-Type',
+       calls[3][1].body === upload && calls[3][1].headers['Content-Type'] === undefined, calls[3][1].headers);
 
     // Default: window.fetch looked up per call, so base.html's login wrapper
     // (installed before any module runs, or replaced later) is the one used.
diff --git a/test/js/unit/test_html_escaping.js b/test/js/unit/test_html_escaping.js
index d6fd19be2..917a2fa3c 100644
--- a/test/js/unit/test_html_escaping.js
+++ b/test/js/unit/test_html_escaping.js
@@ -105,18 +105,15 @@ const ESCAPERS = [
    'static/v3/js/widgets/slider.js', 'function escapeAttr(text) {', 'escapeAttr', false],
   ['display.html (escapeAttr)',
    'templates/v3/partials/display.html', 'function escapeAttr(text) {', 'escapeAttr', false],
-  ['backup_restore.html (escapeHtml)',
-   'templates/v3/partials/backup_restore.html', 'function escapeHtml(value) {', 'escapeHtml', false],
-  ['operation_history.html (escapeHtml)',
-   'templates/v3/partials/operation_history.html', 'function escapeHtml(text) {', 'escapeHtml', false],
   ['tools.html (escHtml)',
    'templates/v3/partials/tools.html', 'function escHtml(s) {', 'escHtml', false],
   ['tools.html (phEscape)',
    'templates/v3/partials/tools.html', 'function phEscape(s) {', 'phEscape', false],
   ['logs.html (escapeHtml)',
    'templates/v3/partials/logs.html', 'function escapeHtml(text) {', 'escapeHtml', false],
-  // cache.html has no script any more: js/pages/cache.js builds its rows with
-  // textContent, and test/js/dom/test_cache_page.js checks a hostile key.
+  // cache.html, backup_restore.html and operation_history.html have no
+  // script any more: their js/pages/ modules draw server data with
+  // textContent, and each page's suite in test/js/dom/ checks a hostile value.
 ];
 
 // The breakout payload: closes a double-quoted attribute and opens an event
diff --git a/test/web_interface/test_es_modules.py b/test/web_interface/test_es_modules.py
index ea04f6345..ae6f5f4e1 100644
--- a/test/web_interface/test_es_modules.py
+++ b/test/web_interface/test_es_modules.py
@@ -41,7 +41,9 @@ def _url(path):
 
 
 def test_the_module_directories_hold_modules():
-    assert {p.name for p in MODULES} >= {"boot.js", "registry.js", "api.js", "facade.js", "cache.js"}
+    assert {p.name for p in MODULES} >= {"boot.js", "registry.js", "api.js", "facade.js", "cache.js",
+                                         "durations.js", "operation-history.js", "raw-json.js",
+                                         "backup-restore.js"}
     for directory in MODULE_DIRS:
         # node needs this to import them in the JS tests; browsers ignore it.
         assert '"type": "module"' in (directory / "package.json").read_text(encoding="utf-8")
@@ -94,10 +96,71 @@ def test_every_import_resolves_inside_the_module_tree(module):
             f"{module.name}: {spec!r} leaves js/core and js/pages")
 
 
+# Converted so far: page name -> (its partial, the route that serves it). The
+# migration order is in docs/WEB_FRONTEND_ARCHITECTURE.md.
+CONVERTED = {
+    "cache": ("cache.html", "/partials/cache"),
+    "durations": ("durations.html", "/partials/durations"),
+    "operation-history": ("operation_history.html", "/partials/operation-history"),
+    "raw-json": ("raw_json.html", "/partials/raw-json"),
+    "backup-restore": ("backup_restore.html", "/partials/backup-restore"),
+}
+
+# Old window.* names that moved into a page module. Each stays as a
+# deprecated alias in boot.js that forwards to the module's export.
+ALIASES = {
+    "cache": ["deleteCacheFile"],
+    "raw-json": ["formatJson", "manualValidateJson", "validateJSON",
+                 "saveMainConfig", "saveSecretsConfig"],
+    "backup-restore": ["exportBackup", "loadBackupList", "validateRestoreFile",
+                       "clearRestore", "runRestore"],
+}
+
+
+def _boot():
+    return (JS / "core" / "boot.js").read_text(encoding="utf-8")
+
+
 def _registered_pages():
-    boot = (JS / "core" / "boot.js").read_text(encoding="utf-8")
-    return re.findall(r"registry\.register\('([\w-]+)',\s*function\(\)\s*\{\s*return import\('\.\./pages/([\w-]+)\.js'\)",
-                      boot)
+    return re.findall(r"'([\w-]+)':\s*page\(function\(\)\s*\{\s*return import\('\.\./pages/([\w-]+)\.js'\)",
+                      _boot())
+
+
+def test_every_converted_page_is_registered():
+    assert dict(_registered_pages()) == {name: name for name in CONVERTED}
+
+
+@pytest.mark.parametrize("name", sorted(CONVERTED))
+def test_a_converted_partial_roots_its_page(client, name):
+    partial, route = CONVERTED[name]
+    text = (PARTIALS / partial).read_text(encoding="utf-8")
+    assert f'data-page="{name}"' in text
+    assert "<script" not in text.lower()
+    # Its buttons are wired by the module, not by inline handlers naming
+    # globals (which would reach the code only through a deprecated alias).
+    assert "onclick=" not in text.lower()
+    module = (JS / "pages" / f"{name}.js").read_text(encoding="utf-8")
+    assert re.search(r"^export function init\(root, ctx\)", module, re.M)
+    # Rendered by the real route, the root is there exactly once.
+    resp = client.get(route)
+    assert resp.status_code == 200, route
+    assert resp.get_data(as_text=True).count(f'data-page="{name}"') == 1, route
+
+
+@pytest.mark.parametrize("name", sorted(ALIASES))
+def test_moved_globals_stay_as_aliases(name):
+    boot = _boot()
+    module = (JS / "pages" / f"{name}.js").read_text(encoding="utf-8")
+    for global_name in ALIASES[name]:
+        assert f"'{global_name}'" in boot, f"boot.js does not alias {global_name}"
+        assert re.search(rf"^export (?:function|const) {global_name}\b", module, re.M), (
+            f"pages/{name}.js does not export {global_name}")
+    # No template defines them any more.
+    for partial in PARTIALS.glob("*.html"):
+        text = partial.read_text(encoding="utf-8")
+        for global_name in ALIASES[name]:
+            assert f"window.{global_name} =" not in text, partial.name
+            assert f"function {global_name}(" not in text, partial.name
 
 
 def test_every_registered_page_has_its_module_and_partial():
diff --git a/web_interface/static/v3/js/core/api.js b/web_interface/static/v3/js/core/api.js
index 1ea86df88..b0fd64db0 100644
--- a/web_interface/static/v3/js/core/api.js
+++ b/web_interface/static/v3/js/core/api.js
@@ -4,6 +4,7 @@
  *   const api = createApi();
  *   const body = await api.get('/api/v3/cache/list', { signal });
  *   await api.post('/api/v3/cache/delete', { key }, { signal });
+ *   await api.request('POST', '/api/v3/backup/validate', { body: formData });
  *
  * Every call resolves to the parsed JSON body, or rejects with an ApiError:
  *   error.status         the HTTP status (0 when no HTTP answer arrived)
@@ -77,6 +78,10 @@ export function createApi(options = {}) {
         if (opts.json !== undefined) {
             init.headers['Content-Type'] = 'application/json';
             init.body = JSON.stringify(opts.json);
+        } else if (opts.body !== undefined) {
+            // Sent as it is (a FormData upload, say); the browser sets the
+            // Content-Type, multipart boundary included.
+            init.body = opts.body;
         }
 
         let response;
diff --git a/web_interface/static/v3/js/core/boot.js b/web_interface/static/v3/js/core/boot.js
index c7b97e4be..09981ec75 100644
--- a/web_interface/static/v3/js/core/boot.js
+++ b/web_interface/static/v3/js/core/boot.js
@@ -21,13 +21,49 @@ const registry = createRegistry({
 });
 const facade = installFacade(window, createFacade(window, api, registry));
 
+/**
+ * A page's loader. It remembers the module once loaded, so an alias of a
+ * synchronous old global (validateJSON returns a boolean) can answer
+ * synchronously while its page is on screen.
+ */
+function page(load) {
+    let module = null;
+    const loader = function() {
+        return Promise.resolve(load()).then(function(loaded) { module = loaded; return loaded; });
+    };
+    loader.loaded = function() { return module; };
+    return loader;
+}
+
 // Converted pages. Each loads on first use: its module is fetched only when
 // its partial (data-page="<name>") first appears.
-registry.register('cache', function() { return import('../pages/cache.js'); });
+const pages = {
+    'cache': page(function() { return import('../pages/cache.js'); }),
+    'durations': page(function() { return import('../pages/durations.js'); }),
+    'operation-history': page(function() { return import('../pages/operation-history.js'); }),
+    'raw-json': page(function() { return import('../pages/raw-json.js'); }),
+    'backup-restore': page(function() { return import('../pages/backup-restore.js'); }),
+};
+Object.keys(pages).forEach(function(name) { registry.register(name, pages[name]); });
+
+/** Keep window[name] working: forward to the page module's export of the same name. */
+function alias(pageName, name, replacement) {
+    const loader = pages[pageName];
+    facade.deprecate(name, function() {
+        const args = arguments;
+        const module = loader.loaded();
+        if (module) return module[name].apply(null, args);
+        return loader().then(function(loaded) { return loaded[name].apply(null, args); });
+    }, replacement);
+}
 
 // Old globals the converted pages used to define.
-facade.deprecate('deleteCacheFile', function(key) {
-    return import('../pages/cache.js').then(function(page) { return page.deleteCacheFile(key); });
-}, "the Cache tab's Delete buttons");
+alias('cache', 'deleteCacheFile', "the Cache tab's Delete buttons");
+['formatJson', 'manualValidateJson', 'validateJSON', 'saveMainConfig', 'saveSecretsConfig'].forEach(function(name) {
+    alias('raw-json', name, "the Config Editor tab's buttons");
+});
+['exportBackup', 'loadBackupList', 'validateRestoreFile', 'clearRestore', 'runRestore'].forEach(function(name) {
+    alias('backup-restore', name, "the Backup & Restore tab's buttons");
+});
 
 registry.start();
diff --git a/web_interface/static/v3/js/pages/backup-restore.js b/web_interface/static/v3/js/pages/backup-restore.js
new file mode 100644
index 000000000..62619a7e1
--- /dev/null
+++ b/web_interface/static/v3/js/pages/backup-restore.js
@@ -0,0 +1,373 @@
+/*
+ * pages/backup-restore.js -- the Backup & Restore tab
+ * (templates/v3/partials/backup_restore.html).
+ *
+ * The buttons carry data-action; one delegated listener on the page root
+ * handles them all, including each history row's Delete. Everything the
+ * server sends back (file names, host names, plugin ids, error messages) is
+ * drawn with textContent.
+ *
+ * Reads (the summary, the history list, inspecting a file) carry ctx.signal
+ * and are cancelled when the page is swapped away. Writes (export, delete,
+ * restore) are not: the server always finishes them and the result is still
+ * reported in a notification, but nothing is drawn into a page that is gone.
+ *
+ * The old globals (exportBackup, loadBackupList, validateRestoreFile,
+ * clearRestore, runRestore) are deprecated aliases made in core/boot.js; they
+ * forward to the exports at the bottom of this file.
+ */
+
+const URLS = {
+    preview: '/api/v3/backup/preview',
+    list: '/api/v3/backup/list',
+    exportZip: '/api/v3/backup/export',
+    validate: '/api/v3/backup/validate',
+    restore: '/api/v3/backup/restore',
+    download: '/api/v3/backup/download/',
+    remove: '/api/v3/backup/',
+};
+
+// Checkbox id -> RestoreOptions key (backup.py's _RESTORE_OPTION_KEYS).
+const RESTORE_OPTIONS = [
+    ['opt-config', 'restore_config'],
+    ['opt-secrets', 'restore_secrets'],
+    ['opt-wifi', 'restore_wifi'],
+    ['opt-fonts', 'restore_fonts'],
+    ['opt-plugin-uploads', 'restore_plugin_uploads'],
+    ['opt-reinstall', 'reinstall_plugins'],
+];
+
+// The mounted page, for the deprecated aliases (boot.js).
+let active = null;
+
+function isQuiet(error) {
+    return !!error && (error.name === 'AbortError' || error.loginRequired);
+}
+
+function message(error) {
+    return (error && error.message) || 'Unknown error';
+}
+
+export function formatSize(bytes) {
+    if (!bytes) return '0 B';
+    const units = ['B', 'KB', 'MB', 'GB'];
+    let i = 0;
+    let size = bytes;
+    while (size >= 1024 && i < units.length - 1) { size /= 1024; i++; }
+    return size.toFixed(i === 0 ? 0 : 1) + ' ' + units[i];
+}
+
+function el(doc, tag, className, text) {
+    const node = doc.createElement(tag);
+    if (className) node.className = className;
+    if (text !== undefined) node.textContent = text;
+    return node;
+}
+
+/** "<strong>label</strong> value" as one line. */
+function labelled(doc, tag, label, value) {
+    const line = el(doc, tag);
+    line.append(el(doc, 'strong', null, label), doc.createTextNode(' ' + value));
+    return line;
+}
+
+function list(values, map, separator) {
+    return (values || []).map(map || String).join(separator || ', ');
+}
+
+function setBusy(button, busy, idleIcon, idleText, busyText) {
+    const doc = button.ownerDocument;
+    button.disabled = busy;
+    button.replaceChildren(el(doc, 'i', busy ? 'fas fa-spinner fa-spin mr-2' : 'fas ' + idleIcon + ' mr-2'),
+                           doc.createTextNode(busy ? busyText : idleText));
+}
+
+function elements(root) {
+    const $ = function(id) { return root.querySelector('#' + id); };
+    return {
+        preview: $('export-preview'),
+        exportButton: $('export-backup-btn'),
+        fileInput: $('restore-file-input'),
+        restorePreview: $('restore-preview'),
+        restorePreviewBody: $('restore-preview-body'),
+        restoreButton: $('run-restore-btn'),
+        result: $('restore-result'),
+        history: $('backup-history'),
+    };
+}
+
+/** The "what a new backup would hold" summary on the Export card. */
+export function loadPreview(ctx) {
+    const box = ctx.state.els.preview;
+    const doc = ctx.root.ownerDocument;
+    return ctx.api.get(URLS.preview, { signal: ctx.signal }).then(function(body) {
+        const d = body.data || {};
+        const fonts = Array.isArray(d.user_fonts) ? d.user_fonts : [];
+        const ul = el(doc, 'ul', 'list-disc pl-5 space-y-1');
+        function item(label, value, after) {
+            const li = el(doc, 'li', null, label + ': ');
+            li.append(el(doc, 'strong', null, String(value)));
+            if (after) li.append(doc.createTextNode(' ' + after));
+            ul.append(li);
+        }
+        item('Main config', d.has_config ? 'yes' : 'no');
+        item('Secrets', d.has_secrets ? 'yes' : 'no');
+        item('WiFi config', d.has_wifi ? 'yes' : 'no');
+        item('User fonts', fonts.length, fonts.length ? '(' + list(fonts) + ')' : '');
+        item('Plugin image uploads', d.plugin_uploads || 0, 'file(s)');
+        item('Installed plugins', (d.plugins || []).length);
+        box.replaceChildren(ul);
+    }).catch(function(err) {
+        if (isQuiet(err)) return;
+        box.textContent = 'Could not load preview: ' + message(err);
+    });
+}
+
+function historyTable(doc, entries) {
+    const table = el(doc, 'table', 'min-w-full divide-y divide-gray-200');
+    const head = el(doc, 'tr');
+    ['Filename', 'Size', 'Created'].forEach(function(label) {
+        head.append(el(doc, 'th', 'text-left py-2', label));
+    });
+    head.append(el(doc, 'th'));
+    const thead = el(doc, 'thead');
+    thead.append(head);
+    const tbody = el(doc, 'tbody', 'divide-y divide-gray-100');
+    entries.forEach(function(entry) {
+        const name = String(entry.filename);
+        const row = el(doc, 'tr');
+        const actions = el(doc, 'td', 'py-2 text-right space-x-2');
+        const link = el(doc, 'a', 'text-blue-600 hover:underline', 'Download');
+        link.href = URLS.download + encodeURIComponent(name);
+        const remove = el(doc, 'button', 'text-red-600 hover:underline', 'Delete');
+        remove.type = 'button';
+        remove.dataset.action = 'delete';
+        remove.dataset.filename = name;
+        remove.setAttribute('aria-label', 'Delete ' + name);
+        actions.append(link, doc.createTextNode(' '), remove);
+        row.append(el(doc, 'td', 'py-2 font-mono text-xs', name),
+                   el(doc, 'td', 'py-2', formatSize(entry.size)),
+                   el(doc, 'td', 'py-2', String(entry.created_at)),
+                   actions);
+        tbody.append(row);
+    });
+    table.append(thead, tbody);
+    return table;
+}
+
+/** The Backup history card. A newer load supersedes an older one. */
+export function loadList(ctx) {
+    const box = ctx.state.els.history;
+    const doc = ctx.root.ownerDocument;
+    const seq = (ctx.state.listSeq || 0) + 1;
+    ctx.state.listSeq = seq;
+    box.textContent = 'Loading…';
+    return ctx.api.get(URLS.list, { signal: ctx.signal }).then(function(body) {
+        if (ctx.state.listSeq !== seq) return;
+        const entries = Array.isArray(body.data) ? body.data : [];
+        box.replaceChildren(entries.length ? historyTable(doc, entries)
+            : el(doc, 'p', null, 'No backups have been created yet.'));
+    }).catch(function(err) {
+        if (isQuiet(err) || ctx.state.listSeq !== seq) return;
+        box.textContent = 'Could not load backups: ' + message(err);
+    });
+}
+
+/** Create a backup, start its download, and refresh the history. */
+export function exportZip(ctx) {
+    const button = ctx.state.els.exportButton;
+    if (button.disabled) return Promise.resolve(false);
+    setBusy(button, true, 'fa-download', 'Download backup', 'Creating…');
+    return ctx.api.post(URLS.exportZip, {}).then(function(body) {
+        ctx.notify('Backup created: ' + body.filename, 'success');
+        if (ctx.signal.aborted) return true;
+        ctx.root.ownerDocument.defaultView.location.assign(URLS.download + encodeURIComponent(body.filename));
+        return loadList(ctx).then(function() { return true; });
+    }).catch(function(err) {
+        if (!isQuiet(err)) ctx.notify('Export failed: ' + message(err), 'error');
+        return false;
+    }).finally(function() {
+        setBusy(button, false, 'fa-download', 'Download backup');
+    });
+}
+
+/** Ask, then delete one stored backup. */
+export function deleteBackup(ctx, filename) {
+    const win = ctx.root.ownerDocument.defaultView;
+    if (!win.confirm('Delete ' + filename + '?')) return Promise.resolve(false);
+    return ctx.api.del(URLS.remove + encodeURIComponent(filename)).then(function() {
+        ctx.notify('Backup deleted', 'success');
+        if (!ctx.signal.aborted) loadList(ctx);
+        return true;
+    }).catch(function(err) {
+        if (!isQuiet(err)) ctx.notify('Delete failed: ' + message(err), 'error');
+        return false;
+    });
+}
+
+function hideRestore(ctx) {
+    ctx.state.inspected = null;
+    ctx.state.els.restorePreview.classList.add('hidden');
+    ctx.state.els.result.classList.add('hidden');
+}
+
+function renderManifest(ctx, manifest) {
+    const doc = ctx.root.ownerDocument;
+    const detected = manifest.detected_contents || [];
+    const plugins = manifest.plugins || [];
+    ctx.state.els.restorePreviewBody.replaceChildren(
+        labelled(doc, 'div', 'Created:', String(manifest.created_at || 'unknown')),
+        labelled(doc, 'div', 'Source host:', String(manifest.hostname || 'unknown')),
+        labelled(doc, 'div', 'LEDMatrix version:', String(manifest.ledmatrix_version || 'unknown')),
+        labelled(doc, 'div', 'Includes:', detected.length ? list(detected) : '(nothing detected)'),
+        labelled(doc, 'div', 'Plugins referenced:',
+                 plugins.length ? list(plugins, function(p) { return String(p && p.plugin_id); }) : 'none'),
+    );
+    ctx.state.els.restorePreview.classList.remove('hidden');
+}
+
+/** Upload the chosen file for inspection and show what it holds. */
+export function inspect(ctx) {
+    const input = ctx.state.els.fileInput;
+    const file = input.files && input.files[0];
+    if (!file) {
+        ctx.notify('Choose a backup file first', 'error');
+        return Promise.resolve(false);
+    }
+    const win = ctx.root.ownerDocument.defaultView;
+    const form = new win.FormData();
+    form.append('backup_file', file);
+    return ctx.api.request('POST', URLS.validate, { body: form, signal: ctx.signal }).then(function(body) {
+        // A different file picked while this one was being inspected.
+        if (!input.files || input.files[0] !== file) return false;
+        ctx.state.inspected = file;
+        renderManifest(ctx, body.data || {});
+        return true;
+    }).catch(function(err) {
+        if (!isQuiet(err)) ctx.notify('Invalid backup: ' + message(err), 'error');
+        return false;
+    });
+}
+
+/** The Cancel button: forget the inspected file. */
+export function clear(ctx) {
+    hideRestore(ctx);
+    ctx.state.els.fileInput.value = '';
+}
+
+function renderResult(ctx, data, partial) {
+    const doc = ctx.root.ownerDocument;
+    const result = ctx.state.els.result;
+    result.className = (partial
+        ? 'bg-yellow-50 border-yellow-200 text-yellow-800'
+        : 'bg-green-50 border-green-200 text-green-800') + ' border rounded-md p-4';
+    const lines = [
+        el(doc, 'h3', 'font-medium mb-2', partial ? 'Restore complete with warnings' : 'Restore complete'),
+        labelled(doc, 'div', 'Restored:', list(data.restored) || 'none'),
+        labelled(doc, 'div', 'Skipped:', list(data.skipped) || 'none'),
+        labelled(doc, 'div', 'Plugins installed:', list(data.plugins_installed) || 'none'),
+        labelled(doc, 'div', 'Plugins failed:', list(data.plugins_failed, function(p) {
+            return String(p.plugin_id) + ' (' + String(p.error) + ')';
+        }) || 'none'),
+        labelled(doc, 'div', 'Errors:', list(data.errors, String, '; ') || 'none'),
+    ];
+    if ((data.restored || []).length || (data.plugins_installed || []).length) {
+        lines.push(el(doc, 'p', 'mt-2', 'Restart the display service to apply all changes.'));
+    }
+    result.replaceChildren(...lines);
+}
+
+/** Ask, then restore the inspected file with the chosen options. */
+export function restore(ctx) {
+    const file = ctx.state.inspected;
+    if (!file) {
+        ctx.notify('Inspect the file before restoring', 'error');
+        return Promise.resolve(false);
+    }
+    const button = ctx.state.els.restoreButton;
+    if (button.disabled) return Promise.resolve(false); // one already running
+    const win = ctx.root.ownerDocument.defaultView;
+    if (!win.confirm('Restore from this backup? Current configuration will be overwritten.')) {
+        return Promise.resolve(false);
+    }
+    const options = {};
+    RESTORE_OPTIONS.forEach(function(pair) {
+        const box = ctx.root.querySelector('#' + pair[0]);
+        options[pair[1]] = !!(box && box.checked);
+    });
+    const form = new win.FormData();
+    form.append('backup_file', file);
+    form.append('options', JSON.stringify(options));
+
+    setBusy(button, true, 'fa-upload', 'Restore now', 'Restoring…');
+    return ctx.api.request('POST', URLS.restore, { body: form }).then(function(body) {
+        const data = body.data || {};
+        const partial = (data.plugins_failed || []).length > 0 || (data.errors || []).length > 0;
+        if (!ctx.signal.aborted) {
+            renderResult(ctx, data, partial);
+            ctx.state.els.result.classList.remove('hidden');
+        }
+        ctx.notify(partial ? 'Restore complete with warnings' : 'Restore complete',
+                   partial ? 'warning' : 'success');
+        return true;
+    }).catch(function(err) {
+        if (isQuiet(err)) return false;
+        const errors = (err.body && err.body.data && err.body.data.errors) || [];
+        ctx.notify('Restore failed: ' + ((err.body && err.body.message) || errors.join('; ')
+            || err.message || 'Restore had errors'), 'error');
+        return false;
+    }).finally(function() {
+        setBusy(button, false, 'fa-upload', 'Restore now');
+    });
+}
+
+const ACTIONS = {
+    'export': exportZip,
+    'refresh': loadList,
+    'inspect': inspect,
+    'restore': restore,
+    'cancel': clear,
+};
+
+export function init(root, ctx) {
+    const els = elements(root);
+    ctx.state.els = els;
+    ctx.state.inspected = null;
+    const on = { signal: ctx.signal };
+
+    root.addEventListener('click', function(event) {
+        const button = event.target.closest('button[data-action]');
+        if (!button || !root.contains(button)) return;
+        if (button.dataset.action === 'delete') {
+            deleteBackup(ctx, button.dataset.filename);
+            return;
+        }
+        const action = ACTIONS[button.dataset.action];
+        if (action) action(ctx);
+    }, on);
+    // A newly picked file has to be inspected again before it can be restored.
+    els.fileInput.addEventListener('change', function() { hideRestore(ctx); }, on);
+
+    active = ctx;
+    loadPreview(ctx);
+    loadList(ctx);
+}
+
+export function destroy(root, ctx) {
+    if (active === ctx) active = null;
+}
+
+// ── the old globals, kept as deprecated aliases (boot.js) ────────────────────
+function forward(action) {
+    return function() { return active ? action(active) : Promise.resolve(false); };
+}
+/** window.exportBackup() */
+export const exportBackup = forward(exportZip);
+/** window.loadBackupList() */
+export const loadBackupList = forward(loadList);
+/** window.validateRestoreFile() */
+export const validateRestoreFile = forward(inspect);
+/** window.clearRestore() */
+export const clearRestore = forward(clear);
+/** window.runRestore() */
+export const runRestore = forward(restore);
diff --git a/web_interface/static/v3/js/pages/durations.js b/web_interface/static/v3/js/pages/durations.js
new file mode 100644
index 000000000..e9a5c49f5
--- /dev/null
+++ b/web_interface/static/v3/js/pages/durations.js
@@ -0,0 +1,50 @@
+/*
+ * pages/durations.js -- the Rotation & Durations tab
+ * (templates/v3/partials/durations.html).
+ *
+ * The form itself is plain htmx (hx-post to /api/v3/config/main), so the only
+ * code here starts the shared drag-and-drop rotation-order list
+ * (static/v3/js/widgets/plugin-order-list.js, the same widget the Vegas
+ * section of the Display tab uses). Its plugin-list request carries
+ * ctx.signal, so a swap cancels it.
+ *
+ * The widget is a classic deferred script and normally loads before this
+ * module runs; the short retry covers a page that arrives first anyway.
+ */
+
+const CONTAINER_ID = 'rotation_plugin_order';
+const ORDER_INPUT_ID = 'rotation_plugin_order_value';
+const RETRY_MS = 100;
+const MAX_TRIES = 50;
+
+export function init(root, ctx) {
+    const container = root.querySelector('#' + CONTAINER_ID);
+    if (!container) return;
+    const win = root.ownerDocument.defaultView;
+    let tries = 0;
+
+    function start() {
+        ctx.state.timer = null;
+        if (ctx.signal.aborted) return;
+        const widget = win.PluginOrderList;
+        if (!widget) {
+            if (++tries < MAX_TRIES) {
+                ctx.state.timer = win.setTimeout(start, RETRY_MS);
+            } else {
+                // Say so rather than showing "Loading..." for ever.
+                container.textContent = 'Could not load the reorder widget — reload the page to try again.';
+                container.className = 'text-sm text-red-500';
+            }
+            return;
+        }
+        widget.init({ containerId: CONTAINER_ID, orderInputId: ORDER_INPUT_ID, signal: ctx.signal });
+    }
+    start();
+}
+
+export function destroy(root, ctx) {
+    if (ctx.state.timer) {
+        root.ownerDocument.defaultView.clearTimeout(ctx.state.timer);
+        ctx.state.timer = null;
+    }
+}
diff --git a/web_interface/static/v3/js/pages/operation-history.js b/web_interface/static/v3/js/pages/operation-history.js
new file mode 100644
index 000000000..8e5e32f75
--- /dev/null
+++ b/web_interface/static/v3/js/pages/operation-history.js
@@ -0,0 +1,283 @@
+/*
+ * pages/operation-history.js -- the Operation History tab
+ * (templates/v3/partials/operation_history.html).
+ *
+ * A read-only audit list: the page loads up to 1,000 records once, then
+ * filters, searches and pages through them in the browser. Rows are built
+ * with textContent, never markup strings, so a plugin id or error message
+ * from the log is always shown as text.
+ *
+ * Every listener and read request carries ctx.signal. Clearing the history is
+ * a write, so it is left to finish if the page is swapped away mid-request;
+ * its result is then only reported, not drawn.
+ */
+
+const HISTORY_URL = '/api/v3/plugins/operation/history';
+const LIST_URL = HISTORY_URL + '?limit=1000';
+const PLUGINS_URL = '/api/v3/plugins/installed';
+const PAGE_SIZE = 50;
+const SEARCH_DELAY_MS = 300;
+
+const STATUS_CLASSES = {
+    success: 'bg-green-100 text-green-800',
+    failed: 'bg-red-100 text-red-800',
+};
+const TYPE_CLASSES = {
+    install: 'bg-blue-100 text-blue-800',
+    update: 'bg-purple-100 text-purple-800',
+    uninstall: 'bg-red-100 text-red-800',
+    enable: 'bg-green-100 text-green-800',
+    disable: 'bg-yellow-100 text-yellow-800',
+    configure: 'bg-teal-100 text-teal-800',
+};
+const NEUTRAL_CLASS = 'bg-gray-100 text-gray-800';
+
+function isQuiet(error) {
+    // A cancelled request (the page was swapped away) or the login redirect
+    // (the browser is already leaving): nothing to tell the user.
+    return !!error && (error.name === 'AbortError' || error.loginRequired);
+}
+
+/**
+ * The server says "completed" or "success" for a success and "error" or
+ * "failed" for a failure; the status filter's values are success/failed.
+ */
+export function normalizeStatus(status) {
+    const s = String(status || '').toLowerCase();
+    if (s === 'completed' || s === 'success') return 'success';
+    if (s === 'error' || s === 'failed') return 'failed';
+    return s;
+}
+
+/** The short "v1.2 | commit: abc1234" summary of a record's details. */
+export function detailsSummary(details) {
+    if (!details || typeof details !== 'object') return '';
+    const parts = [];
+    if (details.version) parts.push('v' + details.version);
+    if (details.branch) parts.push('branch: ' + details.branch);
+    if (details.commit) parts.push('commit: ' + String(details.commit).substring(0, 7));
+    if (details.previous_commit && details.commit && details.previous_commit !== details.commit) {
+        parts.push('from: ' + String(details.previous_commit).substring(0, 7));
+    }
+    if (details.preserve_config !== undefined) {
+        parts.push(details.preserve_config ? 'config preserved' : 'config removed');
+    }
+    return parts.join(' | ');
+}
+
+/** The records that pass the current filters. */
+export function filterRecords(records, filters) {
+    const search = (filters.search || '').toLowerCase();
+    return records.filter(function(record) {
+        if (filters.plugin && record.plugin_id !== filters.plugin) return false;
+        if (filters.type && record.operation_type !== filters.type) return false;
+        if (filters.status && normalizeStatus(record.status) !== filters.status) return false;
+        if (search) {
+            const searchable = [
+                record.operation_type, record.plugin_id, record.status, record.user, record.error,
+                JSON.stringify(record.details || {}),
+            ].join(' ').toLowerCase();
+            if (!searchable.includes(search)) return false;
+        }
+        return true;
+    });
+}
+
+function elements(root) {
+    const $ = function(id) { return root.querySelector('#' + id); };
+    return {
+        plugin: $('history-plugin-filter'),
+        type: $('history-type-filter'),
+        status: $('history-status-filter'),
+        search: $('history-search'),
+        refresh: $('refresh-history-btn'),
+        clear: $('clear-history-btn'),
+        tbody: $('history-table-body'),
+        start: $('history-start'),
+        end: $('history-end'),
+        total: $('history-total'),
+        prev: $('history-prev-btn'),
+        next: $('history-next-btn'),
+    };
+}
+
+function el(doc, tag, className, text) {
+    const node = doc.createElement(tag);
+    if (className) node.className = className;
+    if (text !== undefined) node.textContent = text;
+    return node;
+}
+
+function messageRow(doc, text) {
+    const row = el(doc, 'tr');
+    const cell = el(doc, 'td', 'px-6 py-4 text-center text-gray-500', text);
+    cell.colSpan = 6;
+    row.append(cell);
+    return row;
+}
+
+function badge(doc, className, text) {
+    return el(doc, 'span', 'px-2 py-1 text-xs font-medium rounded ' + className, text);
+}
+
+function historyRow(doc, record) {
+    const row = el(doc, 'tr', 'hover:bg-gray-50');
+    const when = new Date(record.timestamp || record.created_at || Date.now());
+    const status = normalizeStatus(record.status);
+    const type = record.operation_type || 'unknown';
+
+    const typeCell = el(doc, 'td', 'px-6 py-4 whitespace-nowrap text-sm');
+    typeCell.append(badge(doc, TYPE_CLASSES[String(type).toLowerCase()] || NEUTRAL_CLASS, String(type)));
+    const statusCell = el(doc, 'td', 'px-6 py-4 whitespace-nowrap text-sm');
+    statusCell.append(badge(doc, STATUS_CLASSES[status] || NEUTRAL_CLASS, status));
+
+    const detailsCell = el(doc, 'td', 'px-6 py-4 text-sm text-gray-500');
+    const summary = detailsSummary(record.details);
+    detailsCell.append(summary ? el(doc, 'span', 'text-xs text-gray-500', summary) : doc.createTextNode('-'));
+    if (record.error) detailsCell.append(el(doc, 'div', 'text-red-600 text-xs mt-1', String(record.error)));
+
+    row.append(
+        el(doc, 'td', 'px-6 py-4 whitespace-nowrap text-sm text-gray-900', when.toLocaleString()),
+        typeCell,
+        el(doc, 'td', 'px-6 py-4 whitespace-nowrap text-sm text-gray-900', String(record.plugin_id || '-')),
+        statusCell,
+        el(doc, 'td', 'px-6 py-4 whitespace-nowrap text-sm text-gray-500', String(record.user || '-')),
+        detailsCell,
+    );
+    return row;
+}
+
+function render(ctx) {
+    const s = ctx.state;
+    const { tbody, start: startEl, end: endEl, total, prev, next } = s.els;
+    const doc = ctx.root.ownerDocument;
+    const pages = Math.max(1, Math.ceil(s.filtered.length / PAGE_SIZE));
+    if (s.page > pages) s.page = pages;
+    const start = (s.page - 1) * PAGE_SIZE;
+    const end = Math.min(start + PAGE_SIZE, s.filtered.length);
+    const rows = s.filtered.slice(start, end);
+
+    tbody.replaceChildren(...(rows.length
+        ? rows.map(function(record) { return historyRow(doc, record); })
+        : [messageRow(doc, 'No operations found')]));
+
+    // Kept in step even when nothing matches, so "Showing 1 to 50" does not
+    // linger under an empty table.
+    startEl.textContent = String(s.filtered.length ? start + 1 : 0);
+    endEl.textContent = String(end);
+    total.textContent = String(s.filtered.length);
+    prev.disabled = s.page <= 1;
+    next.disabled = end >= s.filtered.length;
+}
+
+/** Re-apply the filters to the loaded records and draw the first page. */
+export function applyFilters(ctx, keepPage) {
+    const { plugin, type, status, search } = ctx.state.els;
+    ctx.state.filtered = filterRecords(ctx.state.records, {
+        plugin: plugin.value, type: type.value, status: status.value, search: search.value,
+    });
+    if (!keepPage) ctx.state.page = 1;
+    render(ctx);
+}
+
+/** Fetch the history and draw it. A newer load supersedes an older one. */
+export function load(ctx) {
+    const seq = (ctx.state.seq || 0) + 1;
+    ctx.state.seq = seq;
+    return ctx.api.get(LIST_URL, { signal: ctx.signal }).then(function(body) {
+        if (ctx.state.seq !== seq) return;
+        ctx.state.records = Array.isArray(body.data) ? body.data : [];
+        applyFilters(ctx, true);
+    }).catch(function(err) {
+        if (isQuiet(err) || ctx.state.seq !== seq) return;
+        ctx.notify(err.network || !err.status
+            ? 'Error loading operation history'
+            : 'Failed to load operation history', 'error');
+    });
+}
+
+function installedPlugins(ctx) {
+    // PluginAPI (js/plugins/api_client.js) caches the installed list it
+    // shares with the Plugin Manager, so prefer it: a reloaded tab then costs
+    // no extra request. Without it, ask the API directly.
+    const pluginApi = ctx.root.ownerDocument.defaultView.PluginAPI;
+    if (pluginApi && typeof pluginApi.getInstalledPlugins === 'function') {
+        return Promise.resolve(pluginApi.getInstalledPlugins());
+    }
+    return ctx.api.get(PLUGINS_URL, { signal: ctx.signal }).then(function(body) {
+        return (body.data && Array.isArray(body.data.plugins)) ? body.data.plugins : [];
+    });
+}
+
+/** Fill the plugin filter with the installed plugins' ids. */
+export function loadPluginFilter(ctx) {
+    return installedPlugins(ctx).then(function(plugins) {
+        if (ctx.signal.aborted || !Array.isArray(plugins)) return;
+        const doc = ctx.root.ownerDocument;
+        const select = ctx.state.els.plugin;
+        plugins.map(function(p) { return p && p.id; }).filter(Boolean).forEach(function(id) {
+            const option = doc.createElement('option');
+            option.value = String(id);
+            option.textContent = String(id);
+            select.append(option);
+        });
+    }).catch(function(err) {
+        if (!isQuiet(err)) ctx.root.ownerDocument.defaultView.console.error('Error loading plugins for filter:', err);
+    });
+}
+
+/** Ask, then clear the whole history. */
+export function clearHistory(ctx) {
+    const win = ctx.root.ownerDocument.defaultView;
+    if (!win.confirm('Are you sure you want to clear the operation history? This cannot be undone.')) {
+        return Promise.resolve(false);
+    }
+    return ctx.api.del(HISTORY_URL).then(function() {
+        ctx.state.seq = (ctx.state.seq || 0) + 1; // an older load must not redraw the old list
+        if (ctx.signal.aborted) return true;
+        ctx.state.records = [];
+        applyFilters(ctx);
+        return true;
+    }).catch(function(err) {
+        if (isQuiet(err)) return false;
+        ctx.notify(err.network || !err.status ? 'Error clearing history'
+            : (err.message || 'Failed to clear history'), 'error');
+        return false;
+    });
+}
+
+export function init(root, ctx) {
+    const els = elements(root);
+    const win = root.ownerDocument.defaultView;
+    const on = { signal: ctx.signal };
+    Object.assign(ctx.state, { els: els, records: [], filtered: [], page: 1, searchTimer: null });
+
+    els.refresh.addEventListener('click', function() { load(ctx); }, on);
+    els.clear.addEventListener('click', function() { clearHistory(ctx); }, on);
+    els.prev.addEventListener('click', function() {
+        if (ctx.state.page > 1) { ctx.state.page--; render(ctx); }
+    }, on);
+    els.next.addEventListener('click', function() {
+        if (ctx.state.page * PAGE_SIZE < ctx.state.filtered.length) { ctx.state.page++; render(ctx); }
+    }, on);
+    [els.plugin, els.type, els.status].forEach(function(select) {
+        select.addEventListener('change', function() { applyFilters(ctx); }, on);
+    });
+    els.search.addEventListener('input', function() {
+        win.clearTimeout(ctx.state.searchTimer);
+        ctx.state.searchTimer = win.setTimeout(function() {
+            ctx.state.searchTimer = null;
+            applyFilters(ctx);
+        }, SEARCH_DELAY_MS);
+    }, on);
+
+    loadPluginFilter(ctx);
+    load(ctx);
+}
+
+export function destroy(root, ctx) {
+    if (ctx.state.searchTimer) {
+        root.ownerDocument.defaultView.clearTimeout(ctx.state.searchTimer);
+        ctx.state.searchTimer = null;
+    }
+}
diff --git a/web_interface/static/v3/js/pages/raw-json.js b/web_interface/static/v3/js/pages/raw-json.js
new file mode 100644
index 000000000..6905c9159
--- /dev/null
+++ b/web_interface/static/v3/js/pages/raw-json.js
@@ -0,0 +1,191 @@
+/*
+ * pages/raw-json.js -- the Config Editor tab (templates/v3/partials/raw_json.html):
+ * plain-text editors for config.json and config_secrets.json.
+ *
+ * The buttons carry data-action ("format", "validate", "save") and
+ * data-editor ("main", "secrets"); one delegated listener on the page root
+ * handles all six. Validation messages are built with textContent, so a
+ * parser message that quotes the user's text stays text.
+ *
+ * Saves are writes: they are not cancelled when the page is swapped away,
+ * so the server always finishes and the result is still reported.
+ *
+ * The old globals (formatJson, manualValidateJson, validateJSON,
+ * saveMainConfig, saveSecretsConfig) are deprecated aliases made in
+ * core/boot.js; they forward to the exports at the bottom of this file.
+ */
+
+const EDITORS = {
+    main: {
+        editor: 'main-config-editor', validation: 'main-config-validation',
+        url: '/api/v3/config/raw/main', file: 'config.json',
+    },
+    secrets: {
+        editor: 'secrets-config-editor', validation: 'secrets-config-validation',
+        url: '/api/v3/config/raw/secrets', file: 'config_secrets.json',
+    },
+};
+
+// The mounted page, for the deprecated aliases (boot.js).
+let active = null;
+
+function el(doc, tag, className, text) {
+    const node = doc.createElement(tag);
+    if (className) node.className = className;
+    if (text !== undefined) node.textContent = text;
+    return node;
+}
+
+function parseError(text) {
+    try {
+        JSON.parse(text);
+        return null;
+    } catch (error) {
+        return error;
+    }
+}
+
+function parts(ctx, kind) {
+    const spec = EDITORS[kind];
+    if (!spec) return null;
+    const textarea = ctx.root.querySelector('#' + spec.editor);
+    const validation = ctx.root.querySelector('#' + spec.validation);
+    return textarea && validation ? { spec: spec, textarea: textarea, validation: validation } : null;
+}
+
+/** The short "Valid JSON" / "Invalid JSON: ..." line under an editor. True when valid. */
+export function validate(ctx, kind) {
+    const p = parts(ctx, kind);
+    if (!p) return true;
+    const doc = ctx.root.ownerDocument;
+    const error = parseError(p.textarea.value);
+    const line = error
+        ? el(doc, 'span', 'text-red-600')
+        : el(doc, 'span', 'text-green-600');
+    line.append(el(doc, 'i', (error ? 'fas fa-times-circle' : 'fas fa-check-circle') + ' mr-1'),
+                doc.createTextNode(error ? 'Invalid JSON: ' + error.message : 'Valid JSON'));
+    p.validation.replaceChildren(line);
+    return !error;
+}
+
+/** The Validate button: a detailed box, and a notification. */
+export function validateDetailed(ctx, kind) {
+    const p = parts(ctx, kind);
+    if (!p) return false;
+    const doc = ctx.root.ownerDocument;
+    const error = parseError(p.textarea.value);
+    const box = el(doc, 'div', error
+        ? 'p-3 bg-red-50 border border-red-200 rounded-md'
+        : 'p-3 bg-green-50 border border-green-200 rounded-md');
+    const row = el(doc, 'div', 'flex items-start');
+    const text = el(doc, 'div');
+    const detail = el(doc, 'div', error ? 'text-sm text-red-700 mt-1' : 'text-sm text-green-700 mt-1');
+    if (error) {
+        row.append(el(doc, 'i', 'fas fa-times-circle text-red-600 text-xl mr-3 mt-1'));
+        text.append(el(doc, 'div', 'font-semibold text-red-800', '✗ Invalid JSON syntax'));
+        detail.append(el(doc, 'strong', null, 'Error:'), doc.createTextNode(' ' + error.message));
+    } else {
+        row.append(el(doc, 'i', 'fas fa-check-circle text-green-600 text-xl mr-3 mt-1'));
+        text.append(el(doc, 'div', 'font-semibold text-green-800', '✓ JSON is valid!'));
+        ['✓ Valid JSON syntax', '✓ Proper structure', '✓ No syntax errors detected'].forEach(function(line, i) {
+            if (i) detail.append(el(doc, 'br'));
+            detail.append(doc.createTextNode(line));
+        });
+    }
+    text.append(detail);
+    row.append(text);
+    box.append(row);
+    p.validation.replaceChildren(box);
+    ctx.notify(error ? 'JSON validation failed: ' + error.message : 'JSON validation successful!',
+               error ? 'error' : 'success');
+    return !error;
+}
+
+/** The Format button: re-indent valid JSON by four spaces. */
+export function format(ctx, kind) {
+    const p = parts(ctx, kind);
+    if (!p) return false;
+    try {
+        p.textarea.value = JSON.stringify(JSON.parse(p.textarea.value), null, 4);
+        validate(ctx, kind);
+        ctx.notify('JSON formatted successfully!', 'success');
+        return true;
+    } catch (error) {
+        validate(ctx, kind);
+        ctx.notify('Cannot format invalid JSON: ' + error.message, 'error');
+        return false;
+    }
+}
+
+/** The Save button: validate, then post the parsed file. */
+export function save(ctx, kind) {
+    const p = parts(ctx, kind);
+    if (!p) return Promise.resolve(false);
+    if (!validate(ctx, kind)) {
+        ctx.notify('Invalid JSON! Please fix errors before saving.', 'error');
+        return Promise.resolve(false);
+    }
+    const config = JSON.parse(p.textarea.value);
+    return ctx.api.post(p.spec.url, config).then(function() {
+        ctx.notify(p.spec.file + ' saved successfully!', 'success');
+        return true;
+    }).catch(function(err) {
+        if (err && err.loginRequired) return false;
+        ctx.notify('Error saving ' + p.spec.file + ': ' + ((err && err.message) || 'An error occurred'), 'error');
+        return false;
+    });
+}
+
+const ACTIONS = { format: format, validate: validateDetailed, save: save };
+
+export function init(root, ctx) {
+    const on = { signal: ctx.signal };
+    root.addEventListener('click', function(event) {
+        const button = event.target.closest('button[data-action][data-editor]');
+        if (!button || !root.contains(button)) return;
+        const action = ACTIONS[button.dataset.action];
+        if (action) action(ctx, button.dataset.editor);
+    }, on);
+    Object.keys(EDITORS).forEach(function(kind) {
+        const p = parts(ctx, kind);
+        if (!p) return;
+        p.textarea.addEventListener('input', function() { validate(ctx, kind); }, on);
+        validate(ctx, kind);
+    });
+    active = ctx;
+}
+
+export function destroy(root, ctx) {
+    if (active === ctx) active = null;
+}
+
+// ── the old globals, kept as deprecated aliases (boot.js) ────────────────────
+// They took element ids; map those back to an editor.
+function kindOf(editorId) {
+    return Object.keys(EDITORS).find(function(kind) { return EDITORS[kind].editor === editorId; });
+}
+
+/** window.formatJson(editorId, validationDivId) */
+export function formatJson(editorId) {
+    return active ? format(active, kindOf(editorId)) : false;
+}
+
+/** window.manualValidateJson(editorId, validationDivId) */
+export function manualValidateJson(editorId) {
+    return active ? validateDetailed(active, kindOf(editorId)) : false;
+}
+
+/** window.validateJSON(editorId, validationDivId): true when valid. */
+export function validateJSON(editorId) {
+    return active ? validate(active, kindOf(editorId)) : true;
+}
+
+/** window.saveMainConfig() */
+export function saveMainConfig() {
+    return active ? save(active, 'main') : Promise.resolve(false);
+}
+
+/** window.saveSecretsConfig() */
+export function saveSecretsConfig() {
+    return active ? save(active, 'secrets') : Promise.resolve(false);
+}
diff --git a/web_interface/static/v3/js/widgets/plugin-order-list.js b/web_interface/static/v3/js/widgets/plugin-order-list.js
index 723238163..184c99b7d 100644
--- a/web_interface/static/v3/js/widgets/plugin-order-list.js
+++ b/web_interface/static/v3/js/widgets/plugin-order-list.js
@@ -12,7 +12,9 @@
  *       orderInputId: 'vegas_plugin_order_value', // hidden input, JSON array of ids
  *       excludedInputId: 'vegas_excluded_plugins_value', // optional: adds an
  *           // include-checkbox per row; unchecked ids collect here (JSON array)
- *       showVegasModeBadge: true                  // optional: Scroll/Pause/Excluded badge
+ *       showVegasModeBadge: true,                 // optional: Scroll/Pause/Excluded badge
+ *       signal: ctx.signal                        // optional: AbortSignal that cancels
+ *           // the plugin-list request (a page module's ctx.signal)
  *   });
  *
  * The container re-renders from /api/v3/plugins/installed each init; the
@@ -97,7 +99,7 @@
             });
         }
 
-        fetch('/api/v3/plugins/installed')
+        fetch('/api/v3/plugins/installed', { signal: options.signal })
             .then(response => response.json())
             .then(data => {
                 const allPlugins = (data.data && data.data.plugins) || data.plugins || [];
@@ -216,6 +218,8 @@
                 syncInputs();
             })
             .catch(error => {
+                // The page was swapped away (options.signal): nothing to draw.
+                if (error && error.name === 'AbortError') return;
                 console.error('Error fetching plugins:', error);
                 const err = document.createElement('p');
                 err.className = 'text-sm text-red-500';
diff --git a/web_interface/templates/v3/partials/backup_restore.html b/web_interface/templates/v3/partials/backup_restore.html
index 393ff2964..eb392bc25 100644
--- a/web_interface/templates/v3/partials/backup_restore.html
+++ b/web_interface/templates/v3/partials/backup_restore.html
@@ -1,5 +1,9 @@
 {% import 'v3/partials/_macros.html' as ui %}
-<div class="space-y-6" id="backup-restore-root">
+{# No inline script: static/v3/js/pages/backup-restore.js runs this page. Its
+   buttons name an action (data-action) for one delegated listener. The page
+   registry (static/v3/js/core/registry.js) starts it when this root appears
+   and stops it when the partial is swapped away. #}
+<div class="space-y-6" id="backup-restore-root" data-page="backup-restore">
 
     <!-- Security warning -->
     <div class="bg-red-50 border border-red-200 rounded-lg p-4">
@@ -28,7 +32,7 @@ <h2 class="text-lg font-semibold text-gray-900">Export backup</h2>
                         Download a single ZIP with all of your settings so you can restore it later.
                     </p>
                 </div>
-                <button onclick="exportBackup()" id="export-backup-btn"
+                <button type="button" data-action="export" id="export-backup-btn"
                         class="inline-flex items-center px-4 py-2 border border-transparent text-sm font-medium rounded-md text-white bg-blue-600 hover:bg-blue-700">
                     <i class="fas fa-download mr-2"></i>
                     Download backup
@@ -58,7 +62,7 @@ <h2 class="text-lg font-semibold text-gray-900">Restore from backup</h2>
             </div>
 
             <div>
-                <button onclick="validateRestoreFile()" id="validate-restore-btn"
+                <button type="button" data-action="inspect" id="validate-restore-btn"
                         class="inline-flex items-center px-3 py-2 border border-gray-300 text-sm font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50">
                     <i class="fas fa-check-circle mr-2"></i>
                     Inspect file
@@ -80,12 +84,12 @@ <h3 class="text-sm font-medium text-gray-900 mt-4 mb-2">Choose what to restore</
                 </div>
 
                 <div class="mt-4 flex gap-2">
-                    <button onclick="runRestore()" id="run-restore-btn"
+                    <button type="button" data-action="restore" id="run-restore-btn"
                             class="inline-flex items-center px-4 py-2 border border-transparent text-sm font-medium rounded-md text-white bg-green-600 hover:bg-green-700">
                         <i class="fas fa-upload mr-2"></i>
                         Restore now
                     </button>
-                    <button onclick="clearRestore()"
+                    <button type="button" data-action="cancel"
                             class="inline-flex items-center px-3 py-2 border border-gray-300 text-sm font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50">
                         Cancel
                     </button>
@@ -104,7 +108,7 @@ <h3 class="text-sm font-medium text-gray-900 mt-4 mb-2">Choose what to restore</
                     <h2 class="text-lg font-semibold text-gray-900">Backup history</h2>
                     <p class="mt-1 text-sm text-gray-600">Previously exported backups stored on this device.</p>
                 </div>
-                <button onclick="loadBackupList()"
+                <button type="button" data-action="refresh"
                         class="inline-flex items-center px-3 py-2 border border-gray-300 text-sm font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50">
                     <i class="fas fa-sync-alt mr-2"></i>
                     Refresh
@@ -115,237 +119,3 @@ <h2 class="text-lg font-semibold text-gray-900">Backup history</h2>
     </div>
 
 </div>
-
-<script>
-(function () {
-    let inspectedFile = null;
-
-    function notify(message, kind) {
-        showNotification(message, kind || 'info');
-    }
-
-    function formatSize(bytes) {
-        if (!bytes) return '0 B';
-        const units = ['B', 'KB', 'MB', 'GB'];
-        let i = 0, size = bytes;
-        while (size >= 1024 && i < units.length - 1) { size /= 1024; i++; }
-        return size.toFixed(i === 0 ? 0 : 1) + ' ' + units[i];
-    }
-
-    function escapeHtml(value) { return window.LEDEscape.html(value); }
-
-    async function loadPreview() {
-        const el = document.getElementById('export-preview');
-        try {
-            const res = await fetch('/api/v3/backup/preview');
-            const payload = await res.json();
-            if (payload.status !== 'success') throw new Error(payload.message || 'Preview failed');
-            const d = payload.data || {};
-            el.innerHTML = `
-                <ul class="list-disc pl-5 space-y-1">
-                    <li>Main config: <strong>${d.has_config ? 'yes' : 'no'}</strong></li>
-                    <li>Secrets: <strong>${d.has_secrets ? 'yes' : 'no'}</strong></li>
-                    <li>WiFi config: <strong>${d.has_wifi ? 'yes' : 'no'}</strong></li>
-                    <li>User fonts: <strong>${(d.user_fonts || []).length}</strong> ${d.user_fonts && d.user_fonts.length ? '(' + d.user_fonts.map(escapeHtml).join(', ') + ')' : ''}</li>
-                    <li>Plugin image uploads: <strong>${d.plugin_uploads || 0}</strong> file(s)</li>
-                    <li>Installed plugins: <strong>${(d.plugins || []).length}</strong></li>
-                </ul>`;
-        } catch (err) {
-            el.textContent = 'Could not load preview: ' + err.message;
-        }
-    }
-
-    async function loadBackupList() {
-        const el = document.getElementById('backup-history');
-        el.textContent = 'Loading…';
-        try {
-            const res = await fetch('/api/v3/backup/list');
-            const payload = await res.json();
-            if (payload.status !== 'success') throw new Error(payload.message || 'List failed');
-            const entries = payload.data || [];
-            if (!entries.length) {
-                el.innerHTML = '<p>No backups have been created yet.</p>';
-                return;
-            }
-            el.innerHTML = `
-                <table class="min-w-full divide-y divide-gray-200">
-                    <thead>
-                        <tr>
-                            <th class="text-left py-2">Filename</th>
-                            <th class="text-left py-2">Size</th>
-                            <th class="text-left py-2">Created</th>
-                            <th></th>
-                        </tr>
-                    </thead>
-                    <tbody class="divide-y divide-gray-100">
-                        ${entries.map(e => `
-                            <tr>
-                                <td class="py-2 font-mono text-xs">${escapeHtml(e.filename)}</td>
-                                <td class="py-2">${formatSize(e.size)}</td>
-                                <td class="py-2">${escapeHtml(e.created_at)}</td>
-                                <td class="py-2 text-right space-x-2">
-                                    <a href="/api/v3/backup/download/${encodeURIComponent(e.filename)}"
-                                       class="text-blue-600 hover:underline">Download</a>
-                                    <button data-filename="${escapeHtml(e.filename)}"
-                                            class="text-red-600 hover:underline backup-delete-btn">Delete</button>
-                                </td>
-                            </tr>
-                        `).join('')}
-                    </tbody>
-                </table>`;
-            el.querySelectorAll('.backup-delete-btn').forEach(btn => {
-                btn.addEventListener('click', () => deleteBackup(btn.dataset.filename));
-            });
-        } catch (err) {
-            el.textContent = 'Could not load backups: ' + err.message;
-        }
-    }
-
-    async function exportBackup() {
-        const btn = document.getElementById('export-backup-btn');
-        btn.disabled = true;
-        btn.innerHTML = '<i class="fas fa-spinner fa-spin mr-2"></i>Creating…';
-        try {
-            const res = await fetch('/api/v3/backup/export', { method: 'POST' });
-            const payload = await res.json();
-            if (payload.status !== 'success') throw new Error(payload.message || 'Export failed');
-            notify('Backup created: ' + payload.filename, 'success');
-            // Trigger browser download immediately.
-            window.location.href = '/api/v3/backup/download/' + encodeURIComponent(payload.filename);
-            await loadBackupList();
-        } catch (err) {
-            notify('Export failed: ' + err.message, 'error');
-        } finally {
-            btn.disabled = false;
-            btn.innerHTML = '<i class="fas fa-download mr-2"></i>Download backup';
-        }
-    }
-
-    async function deleteBackup(filename) {
-        if (!confirm('Delete ' + filename + '?')) return;
-        try {
-            const res = await fetch('/api/v3/backup/' + encodeURIComponent(filename), { method: 'DELETE' });
-            const payload = await res.json();
-            if (payload.status !== 'success') throw new Error(payload.message || 'Delete failed');
-            notify('Backup deleted', 'success');
-            await loadBackupList();
-        } catch (err) {
-            notify('Delete failed: ' + err.message, 'error');
-        }
-    }
-
-    async function validateRestoreFile() {
-        const input = document.getElementById('restore-file-input');
-        if (!input.files || !input.files[0]) {
-            notify('Choose a backup file first', 'error');
-            return;
-        }
-        const file = input.files[0];
-        const fd = new FormData();
-        fd.append('backup_file', file);
-        try {
-            const res = await fetch('/api/v3/backup/validate', { method: 'POST', body: fd });
-            const payload = await res.json();
-            if (payload.status !== 'success') throw new Error(payload.message || 'Validation failed');
-            inspectedFile = file;
-            renderRestorePreview(payload.data);
-        } catch (err) {
-            notify('Invalid backup: ' + err.message, 'error');
-        }
-    }
-
-    function renderRestorePreview(manifest) {
-        const wrap = document.getElementById('restore-preview');
-        const body = document.getElementById('restore-preview-body');
-        const detected = manifest.detected_contents || [];
-        const plugins = manifest.plugins || [];
-        body.innerHTML = `
-            <div><strong>Created:</strong> ${escapeHtml(manifest.created_at || 'unknown')}</div>
-            <div><strong>Source host:</strong> ${escapeHtml(manifest.hostname || 'unknown')}</div>
-            <div><strong>LEDMatrix version:</strong> ${escapeHtml(manifest.ledmatrix_version || 'unknown')}</div>
-            <div><strong>Includes:</strong> ${detected.length ? detected.map(escapeHtml).join(', ') : '(nothing detected)'}</div>
-            <div><strong>Plugins referenced:</strong> ${plugins.length ? plugins.map(p => escapeHtml(p.plugin_id)).join(', ') : 'none'}</div>
-        `;
-        wrap.classList.remove('hidden');
-    }
-
-    function clearRestore() {
-        inspectedFile = null;
-        document.getElementById('restore-preview').classList.add('hidden');
-        document.getElementById('restore-result').classList.add('hidden');
-        document.getElementById('restore-file-input').value = '';
-    }
-
-    async function runRestore() {
-        if (!inspectedFile) {
-            notify('Inspect the file before restoring', 'error');
-            return;
-        }
-        if (!confirm('Restore from this backup? Current configuration will be overwritten.')) return;
-
-        const options = {
-            restore_config: document.getElementById('opt-config').checked,
-            restore_secrets: document.getElementById('opt-secrets').checked,
-            restore_wifi: document.getElementById('opt-wifi').checked,
-            restore_fonts: document.getElementById('opt-fonts').checked,
-            restore_plugin_uploads: document.getElementById('opt-plugin-uploads').checked,
-            reinstall_plugins: document.getElementById('opt-reinstall').checked,
-        };
-        const fd = new FormData();
-        fd.append('backup_file', inspectedFile);
-        fd.append('options', JSON.stringify(options));
-
-        const btn = document.getElementById('run-restore-btn');
-        btn.disabled = true;
-        btn.innerHTML = '<i class="fas fa-spinner fa-spin mr-2"></i>Restoring…';
-        try {
-            const res = await fetch('/api/v3/backup/restore', { method: 'POST', body: fd });
-            const payload = await res.json();
-            if (payload.status !== 'success') {
-                const msgs = (payload.data?.errors || []).join('; ');
-                throw new Error(payload.message || msgs || 'Restore had errors');
-            }
-            const data = payload.data || {};
-            const hasPartial = (data.plugins_failed || []).length > 0 || (data.errors || []).length > 0;
-            const result = document.getElementById('restore-result');
-            result.className = (hasPartial
-                ? 'bg-yellow-50 border-yellow-200 text-yellow-800'
-                : 'bg-green-50 border-green-200 text-green-800') + ' border rounded-md p-4';
-            result.classList.remove('hidden');
-            result.innerHTML = `
-                <h3 class="font-medium mb-2">${hasPartial ? 'Restore complete with warnings' : 'Restore complete'}</h3>
-                <div><strong>Restored:</strong> ${(data.restored || []).map(escapeHtml).join(', ') || 'none'}</div>
-                <div><strong>Skipped:</strong> ${(data.skipped || []).map(escapeHtml).join(', ') || 'none'}</div>
-                <div><strong>Plugins installed:</strong> ${(data.plugins_installed || []).map(escapeHtml).join(', ') || 'none'}</div>
-                <div><strong>Plugins failed:</strong> ${(data.plugins_failed || []).map(p => escapeHtml(p.plugin_id + ' (' + p.error + ')')).join(', ') || 'none'}</div>
-                <div><strong>Errors:</strong> ${(data.errors || []).map(escapeHtml).join('; ') || 'none'}</div>
-                ${((data.restored || []).length || (data.plugins_installed || []).length) ? '<p class="mt-2">Restart the display service to apply all changes.</p>' : ''}
-            `;
-            notify(hasPartial ? 'Restore complete with warnings' : 'Restore complete', hasPartial ? 'warning' : 'success');
-        } catch (err) {
-            notify('Restore failed: ' + err.message, 'error');
-        } finally {
-            btn.disabled = false;
-            btn.innerHTML = '<i class="fas fa-upload mr-2"></i>Restore now';
-        }
-    }
-
-    // Expose handlers to inline onclick attributes.
-    window.exportBackup = exportBackup;
-    window.loadBackupList = loadBackupList;
-    window.validateRestoreFile = validateRestoreFile;
-    window.clearRestore = clearRestore;
-    window.runRestore = runRestore;
-
-    // Clear inspection state whenever the user picks a new file.
-    document.getElementById('restore-file-input').addEventListener('change', function () {
-        inspectedFile = null;
-        document.getElementById('restore-preview').classList.add('hidden');
-        document.getElementById('restore-result').classList.add('hidden');
-    });
-
-    // Initial load.
-    loadPreview();
-    loadBackupList();
-})();
-</script>
diff --git a/web_interface/templates/v3/partials/durations.html b/web_interface/templates/v3/partials/durations.html
index 5c47266fc..1c569605b 100644
--- a/web_interface/templates/v3/partials/durations.html
+++ b/web_interface/templates/v3/partials/durations.html
@@ -1,5 +1,8 @@
 {% import 'v3/partials/_macros.html' as ui %}
-<div class="bg-white rounded-lg shadow p-6">
+{# No inline script: static/v3/js/pages/durations.js starts the rotation-order
+   list. The page registry (static/v3/js/core/registry.js) starts it when this
+   root appears and stops it when the partial is swapped away. #}
+<div class="bg-white rounded-lg shadow p-6" data-page="durations">
     <div class="border-b border-gray-200 pb-4 mb-6">
         <h2 class="text-lg font-semibold text-gray-900">Rotation &amp; Durations</h2>
         <p class="mt-1 text-sm text-gray-600">Set the order plugins rotate on the display and how long each screen is shown. Durations are in seconds.</p>
@@ -77,34 +80,3 @@ <h4 class="text-sm font-semibold text-gray-800 mb-2">{{ group.plugin_name }}</h4
         </div>
     </form>
 </div>
-
-<script>
-(function () {
-    // Shared drag-and-drop plugin list (static/v3/js/widgets/plugin-order-list.js,
-    // same module the Vegas Scroll section uses).
-    function initRotationOrderList(attempt) {
-        const container = document.getElementById('rotation_plugin_order');
-        if (!container) return;
-        if (!window.PluginOrderList) {
-            // Widget script is deferred; retry briefly, then surface a real
-            // error instead of showing "Loading…" forever.
-            if ((attempt || 0) < 50) {
-                setTimeout(function() { initRotationOrderList((attempt || 0) + 1); }, 100);
-            } else {
-                container.textContent = 'Could not load the reorder widget — reload the page to try again.';
-                container.className = 'text-sm text-red-500';
-            }
-            return;
-        }
-        window.PluginOrderList.init({
-            containerId: 'rotation_plugin_order',
-            orderInputId: 'rotation_plugin_order_value'
-        });
-    }
-    if (document.readyState === 'loading') {
-        document.addEventListener('DOMContentLoaded', initRotationOrderList);
-    } else {
-        initRotationOrderList();
-    }
-}());
-</script>
diff --git a/web_interface/templates/v3/partials/operation_history.html b/web_interface/templates/v3/partials/operation_history.html
index 4fc80e4e8..5a676f355 100644
--- a/web_interface/templates/v3/partials/operation_history.html
+++ b/web_interface/templates/v3/partials/operation_history.html
@@ -1,4 +1,7 @@
-<div class="bg-white rounded-lg shadow p-6">
+{# No inline script: static/v3/js/pages/operation-history.js runs this page.
+   The page registry (static/v3/js/core/registry.js) starts it when this root
+   appears and stops it when the partial is swapped away. #}
+<div class="bg-white rounded-lg shadow p-6" data-page="operation-history">
     <div class="border-b border-gray-200 pb-4 mb-6">
         <h2 class="text-lg font-semibold text-gray-900">Operation History</h2>
         <p class="mt-1 text-sm text-gray-600">View history of plugin operations and configuration changes for debugging and auditing.</p>
@@ -39,12 +42,12 @@ <h2 class="text-lg font-semibold text-gray-900">Operation History</h2>
 
         <div class="flex items-center space-x-2">
             <!-- Refresh -->
-            <button id="refresh-history-btn" class="btn bg-blue-600 hover:bg-blue-700 text-white px-3 py-1 rounded text-sm">
+            <button type="button" id="refresh-history-btn" class="btn bg-blue-600 hover:bg-blue-700 text-white px-3 py-1 rounded text-sm">
                 <i class="fas fa-sync-alt mr-1"></i>Refresh
             </button>
 
             <!-- Clear History -->
-            <button id="clear-history-btn" class="btn bg-red-600 hover:bg-red-700 text-white px-3 py-1 rounded text-sm">
+            <button type="button" id="clear-history-btn" class="btn bg-red-600 hover:bg-red-700 text-white px-3 py-1 rounded text-sm">
                 <i class="fas fa-trash mr-1"></i>Clear
             </button>
         </div>
@@ -81,307 +84,12 @@ <h2 class="text-lg font-semibold text-gray-900">Operation History</h2>
             Showing <span id="history-start">0</span> to <span id="history-end">0</span> of <span id="history-total">0</span> operations
         </div>
         <div class="flex space-x-2">
-            <button id="history-prev-btn" class="btn bg-gray-600 hover:bg-gray-700 text-white px-3 py-1 rounded text-sm disabled:opacity-50" disabled>
+            <button type="button" id="history-prev-btn" class="btn bg-gray-600 hover:bg-gray-700 text-white px-3 py-1 rounded text-sm disabled:opacity-50" disabled>
                 <i class="fas fa-chevron-left mr-1"></i>Previous
             </button>
-            <button id="history-next-btn" class="btn bg-gray-600 hover:bg-gray-700 text-white px-3 py-1 rounded text-sm disabled:opacity-50" disabled>
+            <button type="button" id="history-next-btn" class="btn bg-gray-600 hover:bg-gray-700 text-white px-3 py-1 rounded text-sm disabled:opacity-50" disabled>
                 Next<i class="fas fa-chevron-right ml-1"></i>
             </button>
         </div>
     </div>
 </div>
-
-<script>
-(function() {
-    let currentPage = 1;
-    const pageSize = 50;
-    let allHistory = [];
-    let filteredHistory = [];
-
-    // Normalize status values so both server-side conventions match filter values.
-    // The server may return "completed" or "success" for successful operations,
-    // and "error" or "failed" for failures.
-    function normalizeStatus(status) {
-        const s = (status || '').toLowerCase();
-        if (s === 'completed' || s === 'success') return 'success';
-        if (s === 'error' || s === 'failed') return 'failed';
-        return s;
-    }
-
-    // Load operation history
-    async function loadHistory() {
-        try {
-            const response = await fetch('/api/v3/plugins/operation/history?limit=1000');
-            const data = await response.json();
-
-            if (data.status === 'success') {
-                allHistory = data.data || [];
-                applyFilters();
-            } else {
-                console.error('Failed to load history:', data.message);
-                showError('Failed to load operation history');
-            }
-        } catch (error) {
-            console.error('Error loading history:', error);
-            showError('Error loading operation history');
-        }
-    }
-
-    // Apply filters
-    function applyFilters() {
-        const pluginFilter = document.getElementById('history-plugin-filter')?.value || '';
-        const typeFilter = document.getElementById('history-type-filter')?.value || '';
-        const statusFilter = document.getElementById('history-status-filter')?.value || '';
-        const searchTerm = (document.getElementById('history-search')?.value || '').toLowerCase();
-
-        filteredHistory = allHistory.filter(record => {
-            if (pluginFilter && record.plugin_id !== pluginFilter) return false;
-            if (typeFilter && record.operation_type !== typeFilter) return false;
-            if (statusFilter && normalizeStatus(record.status) !== statusFilter) return false;
-            if (searchTerm) {
-                const searchable = [
-                    record.operation_type,
-                    record.plugin_id,
-                    record.status,
-                    record.user,
-                    record.error,
-                    JSON.stringify(record.details || {})
-                ].join(' ').toLowerCase();
-                if (!searchable.includes(searchTerm)) return false;
-            }
-            return true;
-        });
-
-        renderHistory();
-    }
-
-    // Render history table
-    function renderHistory() {
-        const tbody = document.getElementById('history-table-body');
-        if (!tbody) return;
-
-        const start = (currentPage - 1) * pageSize;
-        const end = Math.min(start + pageSize, filteredHistory.length);
-        const pageData = filteredHistory.slice(start, end);
-
-        if (pageData.length === 0) {
-            tbody.innerHTML = `
-                <tr>
-                    <td colspan="6" class="px-6 py-4 text-center text-gray-500">
-                        No operations found
-                    </td>
-                </tr>
-            `;
-            return;
-        }
-
-        tbody.innerHTML = pageData.map(record => {
-            const timestamp = new Date(record.timestamp || record.created_at || Date.now());
-            const timeStr = timestamp.toLocaleString();
-            const normalized = normalizeStatus(record.status);
-            const statusClass = getStatusClass(normalized);
-            const operationType = record.operation_type || 'unknown';
-            const pluginId = record.plugin_id || '-';
-            const user = record.user || '-';
-            const error = record.error ? `<div class="text-red-600 text-xs mt-1">${escapeHtml(record.error)}</div>` : '';
-
-            // Build a concise details summary
-            let detailsSummary = '';
-            const d = record.details;
-            if (d) {
-                const parts = [];
-                if (d.version) parts.push(`v${d.version}`);
-                if (d.branch) parts.push(`branch: ${d.branch}`);
-                if (d.commit) parts.push(`commit: ${String(d.commit).substring(0, 7)}`);
-                if (d.previous_commit && d.commit && d.previous_commit !== d.commit) {
-                    parts.push(`from: ${String(d.previous_commit).substring(0, 7)}`);
-                }
-                if (d.preserve_config !== undefined) parts.push(d.preserve_config ? 'config preserved' : 'config removed');
-                detailsSummary = parts.length > 0 ? `<span class="text-xs text-gray-500">${escapeHtml(parts.join(' | '))}</span>` : '';
-            }
-
-            return `
-                <tr class="hover:bg-gray-50">
-                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-900">${escapeHtml(timeStr)}</td>
-                    <td class="px-6 py-4 whitespace-nowrap text-sm">
-                        <span class="px-2 py-1 text-xs font-medium rounded ${getOperationTypeClass(operationType)}">
-                            ${escapeHtml(operationType)}
-                        </span>
-                    </td>
-                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-900">${escapeHtml(pluginId)}</td>
-                    <td class="px-6 py-4 whitespace-nowrap text-sm">
-                        <span class="px-2 py-1 text-xs font-medium rounded ${statusClass}">
-                            ${escapeHtml(normalized)}
-                        </span>
-                    </td>
-                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">${escapeHtml(user)}</td>
-                    <td class="px-6 py-4 text-sm text-gray-500">
-                        ${detailsSummary || '-'}
-                        ${error}
-                    </td>
-                </tr>
-            `;
-        }).join('');
-
-        // Update pagination
-        document.getElementById('history-start').textContent = filteredHistory.length > 0 ? start + 1 : 0;
-        document.getElementById('history-end').textContent = end;
-        document.getElementById('history-total').textContent = filteredHistory.length;
-
-        // Update pagination buttons
-        const prevBtn = document.getElementById('history-prev-btn');
-        const nextBtn = document.getElementById('history-next-btn');
-        if (prevBtn) prevBtn.disabled = currentPage === 1;
-        if (nextBtn) nextBtn.disabled = end >= filteredHistory.length;
-    }
-
-    // Helper functions
-    function getStatusClass(status) {
-        if (status === 'success') return 'bg-green-100 text-green-800';
-        if (status === 'failed') return 'bg-red-100 text-red-800';
-        return 'bg-gray-100 text-gray-800';
-    }
-
-    function getOperationTypeClass(type) {
-        const typeLower = (type || '').toLowerCase();
-        if (typeLower === 'install') {
-            return 'bg-blue-100 text-blue-800';
-        } else if (typeLower === 'update') {
-            return 'bg-purple-100 text-purple-800';
-        } else if (typeLower === 'uninstall') {
-            return 'bg-red-100 text-red-800';
-        } else if (typeLower === 'enable') {
-            return 'bg-green-100 text-green-800';
-        } else if (typeLower === 'disable') {
-            return 'bg-yellow-100 text-yellow-800';
-        } else if (typeLower === 'configure') {
-            return 'bg-teal-100 text-teal-800';
-        }
-        return 'bg-gray-100 text-gray-800';
-    }
-
-    function escapeHtml(text) { return window.LEDEscape.html(text); }
-
-    function showError(message) {
-        showNotification(message, 'error');
-    }
-
-    // Populate plugin filter
-    async function populatePluginFilter() {
-        try {
-            // Use PluginAPI if available, otherwise fall back to direct fetch
-            let data;
-            if (window.PluginAPI && window.PluginAPI.getInstalledPlugins) {
-                const plugins = await window.PluginAPI.getInstalledPlugins();
-                data = { status: 'success', data: { plugins: plugins } };
-            } else {
-                const response = await fetch('/api/v3/plugins/installed');
-                data = await response.json();
-            }
-
-            if (data.status === 'success' && data.data) {
-                const select = document.getElementById('history-plugin-filter');
-                if (select) {
-                    const plugins = (data.data.plugins || []).map(p => p.id).filter(Boolean);
-                    plugins.forEach(pluginId => {
-                        const option = document.createElement('option');
-                        option.value = pluginId;
-                        option.textContent = pluginId;
-                        select.appendChild(option);
-                    });
-                }
-            }
-        } catch (error) {
-            console.error('Error loading plugins for filter:', error);
-        }
-    }
-
-    // Event listeners
-    function setupEventListeners() {
-        const refreshBtn = document.getElementById('refresh-history-btn');
-        if (refreshBtn) {
-            refreshBtn.addEventListener('click', () => {
-                loadHistory();
-            });
-        }
-
-        const clearBtn = document.getElementById('clear-history-btn');
-        if (clearBtn) {
-            clearBtn.addEventListener('click', async () => {
-                if (confirm('Are you sure you want to clear the operation history? This cannot be undone.')) {
-                    try {
-                        const response = await fetch('/api/v3/plugins/operation/history', { method: 'DELETE' });
-                        const data = await response.json();
-                        if (data.status === 'success') {
-                            allHistory = [];
-                            applyFilters();
-                        } else {
-                            showError(data.message || 'Failed to clear history');
-                        }
-                    } catch (error) {
-                        showError('Error clearing history');
-                    }
-                }
-            });
-        }
-
-        const prevBtn = document.getElementById('history-prev-btn');
-        if (prevBtn) {
-            prevBtn.addEventListener('click', () => {
-                if (currentPage > 1) {
-                    currentPage--;
-                    renderHistory();
-                }
-            });
-        }
-
-        const nextBtn = document.getElementById('history-next-btn');
-        if (nextBtn) {
-            nextBtn.addEventListener('click', () => {
-                const start = (currentPage - 1) * pageSize;
-                const end = Math.min(start + pageSize, filteredHistory.length);
-                if (end < filteredHistory.length) {
-                    currentPage++;
-                    renderHistory();
-                }
-            });
-        }
-
-        // Filter change listeners
-        ['history-plugin-filter', 'history-type-filter', 'history-status-filter'].forEach(id => {
-            const element = document.getElementById(id);
-            if (element) {
-                element.addEventListener('change', () => {
-                    currentPage = 1;
-                    applyFilters();
-                });
-            }
-        });
-
-        const searchInput = document.getElementById('history-search');
-        if (searchInput) {
-            let searchTimeout;
-            searchInput.addEventListener('input', () => {
-                clearTimeout(searchTimeout);
-                searchTimeout = setTimeout(() => {
-                    currentPage = 1;
-                    applyFilters();
-                }, 300);
-            });
-        }
-    }
-
-    // Initialize
-    if (document.readyState === 'loading') {
-        document.addEventListener('DOMContentLoaded', () => {
-            setupEventListeners();
-            populatePluginFilter();
-            loadHistory();
-        });
-    } else {
-        setupEventListeners();
-        populatePluginFilter();
-        loadHistory();
-    }
-})();
-</script>
diff --git a/web_interface/templates/v3/partials/raw_json.html b/web_interface/templates/v3/partials/raw_json.html
index 01c2a5fc4..853857500 100644
--- a/web_interface/templates/v3/partials/raw_json.html
+++ b/web_interface/templates/v3/partials/raw_json.html
@@ -1,4 +1,8 @@
-<div class="space-y-6">
+{# No inline script: static/v3/js/pages/raw-json.js runs this page. Its buttons
+   name an action and an editor (data-action, data-editor) for one delegated
+   listener. The page registry (static/v3/js/core/registry.js) starts it when
+   this root appears and stops it when the partial is swapped away. #}
+<div class="space-y-6" data-page="raw-json">
     <!-- Config.json Editor -->
     <div class="bg-white rounded-lg shadow p-6">
         <div class="border-b border-gray-200 pb-4 mb-6">
@@ -8,17 +12,17 @@ <h2 id="main-config-editor-title" class="text-lg font-semibold text-gray-900">co
                     <p class="mt-1 text-sm text-gray-600">{{ main_config_path }}</p>
                 </div>
                 <div class="flex gap-2">
-                    <button onclick="formatJson('main-config-editor', 'main-config-validation')" 
+                    <button type="button" data-action="format" data-editor="main"
                             class="inline-flex items-center px-3 py-2 border border-gray-300 text-sm font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50">
                         <i class="fas fa-align-left mr-2"></i>
                         Format JSON
                     </button>
-                    <button onclick="manualValidateJson('main-config-editor', 'main-config-validation')" 
+                    <button type="button" data-action="validate" data-editor="main"
                             class="inline-flex items-center px-3 py-2 border border-transparent text-sm font-medium rounded-md text-white bg-yellow-600 hover:bg-yellow-700">
                         <i class="fas fa-check-circle mr-2"></i>
                         Validate JSON
                     </button>
-                    <button onclick="saveMainConfig()" 
+                    <button type="button" data-action="save" data-editor="main"
                             class="inline-flex items-center px-4 py-2 border border-transparent text-sm font-medium rounded-md text-white bg-blue-600 hover:bg-blue-700">
                         <i class="fas fa-save mr-2"></i>
                         Save
@@ -59,17 +63,17 @@ <h2 id="secrets-config-editor-title" class="text-lg font-semibold text-gray-900"
                     <p class="mt-1 text-sm text-gray-600">{{ secrets_config_path }}</p>
                 </div>
                 <div class="flex gap-2">
-                    <button onclick="formatJson('secrets-config-editor', 'secrets-config-validation')" 
+                    <button type="button" data-action="format" data-editor="secrets"
                             class="inline-flex items-center px-3 py-2 border border-gray-300 text-sm font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50">
                         <i class="fas fa-align-left mr-2"></i>
                         Format JSON
                     </button>
-                    <button onclick="manualValidateJson('secrets-config-editor', 'secrets-config-validation')" 
+                    <button type="button" data-action="validate" data-editor="secrets"
                             class="inline-flex items-center px-3 py-2 border border-transparent text-sm font-medium rounded-md text-white bg-yellow-600 hover:bg-yellow-700">
                         <i class="fas fa-check-circle mr-2"></i>
                         Validate JSON
                     </button>
-                    <button onclick="saveSecretsConfig()" 
+                    <button type="button" data-action="save" data-editor="secrets"
                             class="inline-flex items-center px-4 py-2 border border-transparent text-sm font-medium rounded-md text-white bg-blue-600 hover:bg-blue-700">
                         <i class="fas fa-save mr-2"></i>
                         Save
@@ -101,218 +105,3 @@ <h3 class="text-sm font-medium text-red-800">Security Notice</h3>
         </div>
     </div>
 </div>
-
-<script>
-// Format JSON with proper indentation
-function formatJson(editorId, validationDivId) {
-    const textarea = document.getElementById(editorId);
-    const jsonText = textarea.value;
-    
-    try {
-        const parsed = JSON.parse(jsonText);
-        const formatted = JSON.stringify(parsed, null, 4);
-        textarea.value = formatted;
-        
-        // Auto-validate after formatting
-        validateJSON(editorId, validationDivId);
-        showNotification('JSON formatted successfully!', 'success');
-    } catch (error) {
-        showNotification('Cannot format invalid JSON: ' + error.message, 'error');
-        validateJSON(editorId, validationDivId);
-    }
-}
-
-// Manual validation with detailed feedback
-function manualValidateJson(editorId, validationDivId) {
-    const textarea = document.getElementById(editorId);
-    const validation = document.getElementById(validationDivId);
-    const jsonText = textarea.value;
-    
-    if (!textarea || !validation) return;
-    
-    try {
-        const parsed = JSON.parse(jsonText);
-        validation.innerHTML = `
-            <div class="p-3 bg-green-50 border border-green-200 rounded-md">
-                <div class="flex items-start">
-                    <i class="fas fa-check-circle text-green-600 text-xl mr-3 mt-1"></i>
-                    <div>
-                        <div class="font-semibold text-green-800">✓ JSON is valid!</div>
-                        <div class="text-sm text-green-700 mt-1">
-                            ✓ Valid JSON syntax<br>
-                            ✓ Proper structure<br>
-                            ✓ No syntax errors detected
-                        </div>
-                    </div>
-                </div>
-            </div>
-        `;
-        showNotification('JSON validation successful!', 'success');
-    } catch (e) {
-        validation.innerHTML = `
-            <div class="p-3 bg-red-50 border border-red-200 rounded-md">
-                <div class="flex items-start">
-                    <i class="fas fa-times-circle text-red-600 text-xl mr-3 mt-1"></i>
-                    <div>
-                        <div class="font-semibold text-red-800">✗ Invalid JSON syntax</div>
-                        <div class="text-sm text-red-700 mt-1">
-                            <strong>Error:</strong> ${window.LEDEscape.html(e.message)}
-                        </div>
-                    </div>
-                </div>
-            </div>
-        `;
-        showNotification('JSON validation failed: ' + e.message, 'error');
-    }
-}
-
-// Auto-validate JSON as user types (simple version)
-function validateJSON(editor, validationDiv) {
-    const textarea = document.getElementById(editor);
-    const validation = document.getElementById(validationDiv);
-    
-    if (!textarea || !validation) return true;
-    
-    try {
-        JSON.parse(textarea.value);
-        validation.innerHTML = '<span class="text-green-600"><i class="fas fa-check-circle mr-1"></i>Valid JSON</span>';
-        return true;
-    } catch (e) {
-        validation.innerHTML = '<span class="text-red-600"><i class="fas fa-times-circle mr-1"></i>Invalid JSON: ' + e.message + '</span>';
-        return false;
-    }
-}
-
-// Auto-validate on input
-document.getElementById('main-config-editor')?.addEventListener('input', function() {
-    validateJSON('main-config-editor', 'main-config-validation');
-});
-
-document.getElementById('secrets-config-editor')?.addEventListener('input', function() {
-    validateJSON('secrets-config-editor', 'secrets-config-validation');
-});
-
-// Initial validation
-setTimeout(() => {
-    validateJSON('main-config-editor', 'main-config-validation');
-    validateJSON('secrets-config-editor', 'secrets-config-validation');
-}, 100);
-
-function saveMainConfig() {
-    const textarea = document.getElementById('main-config-editor');
-    
-    // Validate JSON first
-    if (!validateJSON('main-config-editor', 'main-config-validation')) {
-        showNotification('Invalid JSON! Please fix errors before saving.', 'error');
-        return;
-    }
-    
-    try {
-        const config = JSON.parse(textarea.value);
-        
-        // Save via API
-        fetch('/api/v3/config/raw/main', {
-            method: 'POST',
-            headers: {
-                'Content-Type': 'application/json'
-            },
-            body: JSON.stringify(config)
-        })
-        .then(async response => {
-            // Store status and statusText before parsing
-            const status = response.status;
-            const statusText = response.statusText;
-            
-            // Try to parse JSON response
-            let data;
-            try {
-                data = await response.json();
-            } catch (parseError) {
-                // If JSON parsing fails, throw generic HTTP error
-                throw new Error(`HTTP ${status}: ${statusText}`);
-            }
-            
-            // Handle non-OK responses
-            if (!response.ok) {
-                // Extract specific error message from API response if available
-                const errorMessage = data.message || data.status || statusText;
-                throw new Error(errorMessage);
-            }
-            
-            // Handle successful responses
-            if (data.status === 'success') {
-                showNotification('config.json saved successfully!', 'success');
-            } else {
-                showNotification('Error saving config.json: ' + (data.message || 'Unknown error'), 'error');
-            }
-        })
-        .catch(error => {
-            // Preserve the error message that was intentionally thrown
-            showNotification('Error saving config.json: ' + (error.message || 'An error occurred'), 'error');
-        });
-    } catch (e) {
-        showNotification('Invalid JSON: ' + e.message, 'error');
-    }
-}
-
-function saveSecretsConfig() {
-    const textarea = document.getElementById('secrets-config-editor');
-    
-    // Validate JSON first
-    if (!validateJSON('secrets-config-editor', 'secrets-config-validation')) {
-        showNotification('Invalid JSON! Please fix errors before saving.', 'error');
-        return;
-    }
-    
-    try {
-        const config = JSON.parse(textarea.value);
-        
-        // Save via API
-        fetch('/api/v3/config/raw/secrets', {
-            method: 'POST',
-            headers: {
-                'Content-Type': 'application/json'
-            },
-            body: JSON.stringify(config)
-        })
-        .then(async response => {
-            // Store status and statusText before parsing
-            const status = response.status;
-            const statusText = response.statusText;
-            
-            // Try to parse JSON response
-            let data;
-            try {
-                data = await response.json();
-            } catch (parseError) {
-                // If JSON parsing fails, throw generic HTTP error
-                throw new Error(`HTTP ${status}: ${statusText}`);
-            }
-            
-            // Handle non-OK responses
-            if (!response.ok) {
-                // Extract specific error message from API response if available
-                const errorMessage = data.message || data.status || statusText;
-                throw new Error(errorMessage);
-            }
-            
-            // Handle successful responses
-            if (data.status === 'success') {
-                showNotification('config_secrets.json saved successfully!', 'success');
-            } else {
-                showNotification('Error saving config_secrets.json: ' + (data.message || 'Unknown error'), 'error');
-            }
-        })
-        .catch(error => {
-            // Preserve the error message that was intentionally thrown
-            showNotification('Error saving config_secrets.json: ' + (error.message || 'An error occurred'), 'error');
-        });
-    } catch (e) {
-        showNotification('Invalid JSON: ' + e.message, 'error');
-    }
-}
-
-// showNotification is provided by the notification widget (notification.js)
-// No local definition needed - uses window.showNotification from the widget
-</script>
-