fix v1.44.2: external review CR-1..CR-3

CR-1: the lock invariant is restated precisely (never by an accidental
tap; the door card's labeled button is the ONE sanctioned surface),
unlocking now confirms, and smoke_lock_invariant exercises all five
actuation paths (icon tap, controls[], card entities, _cardToggle,
opening card).

CR-2: attachment migration is transactional — the server COPIES files,
the config is committed with its revision check, and only then the old
folder is removed via the new houseplan/files/cleanup. A rejected save
no longer leaves the stored urls pointing at an emptied folder.

CR-3: migrate returns an exact {source: written} mapping; only confirmed
copies are rewritten, destination name collisions get a unique name
instead of silently linking a pre-existing file, and a failed migration
raises a toast instead of being swallowed.

+1 unit test (119), +1 backend test, +1 smoke (51 total); docs
same-commit

demo/smoke_lock_action.mjs

@@ -5,6 +5,7 @@ const res = await page.evaluate(async () => {
   const c = window.__card;
   const sr = () => c.shadowRoot || c.renderRoot;
   const calls = [];
+  window.confirm = () => true; // review CR-1: unlocking now confirms
   c.hass = { ...c.hass, callService: (d, s, data) => calls.push([d, s, data.entity_id]) };
   await c.updateComplete;
   // добавить дверь с замком на f1

demo/smoke_lock_invariant.mjs

@@ -0,0 +1,48 @@
+// review CR-1: exercise EVERY actuation path and prove locks/alarms are safe
+import { launch, checkAll, finish } from './serve.mjs';
+const { page, browser } = await launch();
+const res = await page.evaluate(async () => {
+  const out = {};
+  const c = window.__card;
+  const calls = [];
+  c.hass = { ...c.hass, callService: (d, s, data) => { calls.push(`${d}.${s}:${data.entity_id}`); return Promise.resolve(); },
+    states: { ...c.hass.states,
+      'lock.front_door': { state: 'locked', attributes: { friendly_name: 'Front door' } },
+      'alarm_control_panel.home': { state: 'armed_away', attributes: {} } } };
+  await c.updateComplete;
+  c._setMode('view'); await c.updateComplete;
+  const lockCalls = () => calls.filter((x) => x.includes('lock.') || x.includes('alarm_control_panel.'));
+  // 1) тап по значку устройства с замком
+  const lockDev = c._devices.find((d) => d.entities?.some((e) => e.startsWith('lock.'))) || c._devices[0];
+  const fake = { ...lockDev, primary: 'lock.front_door', tapAction: 'toggle',
+    marker: { ...(lockDev.marker || {}), tap_action: 'toggle' } };
+  c._clickDevice(new MouseEvent('click'), fake);
+  out.iconTapSafe = lockCalls().length === 0;
+  // 2) controls[] с замком внутри
+  const withControls = { ...fake, tapAction: 'toggle',
+    marker: { controls: ['lock.front_door', 'alarm_control_panel.home'], tap_action: 'toggle' } };
+  c._clickDevice(new MouseEvent('click'), withControls);
+  out.controlsSafe = lockCalls().length === 0;
+  // 3) карточка устройства: замок отдаётся в more-info, а не тумблером
+  const kinds = c._cardEntities({ ...fake, entities: ['lock.front_door', 'alarm_control_panel.home'] });
+  out.cardNoToggleForLocks = kinds.every((k) => k.kind !== 'toggle');
+  c._cardToggle('lock.front_door');
+  c._cardToggle('alarm_control_panel.home');
+  out.cardToggleRefuses = lockCalls().length === 0;
+  // 4) кнопка в карточке двери — единственная разрешённая поверхность, и спрашивает подтверждение
+  let asked = null;
+  window.confirm = (msg) => { asked = msg; return false; };
+  c._lockAction('lock.front_door', 'unlock');
+  out.unlockAsksConfirm = asked !== null && lockCalls().length === 0;
+  window.confirm = () => true;
+  c._lockAction('lock.front_door', 'unlock');
+  out.unlockAfterConfirm = calls.at(-1) === 'lock.unlock:lock.front_door';
+  // запирание не спрашивает
+  asked = null;
+  window.confirm = (m) => { asked = m; return true; };
+  c._lockAction('lock.front_door', 'lock');
+  out.lockNoConfirm = asked === null && calls.at(-1) === 'lock.lock:lock.front_door';
+  return out;
+});
+checkAll(res);
+await finish(browser, res);