feat v1.13.0: universality — floors-import wizard, editable icon rules, tap actions (phase 9)

- floors wizard: spaces from the HA floor registry, step-by-step with mandatory
  plan upload per floor, skip support, auto-markup after the last one
- icon rules as data (settings.icon_rules) + in-card editor with live test,
  invalid-regex guard, bilingual defaults, device_class fallback chain
- tap_action (card) + per-device override; security model: card-wide toggle only
  for light/switch/fan/humidifier, explicit override for covers, never lock/alarm;
  600ms long-press always opens the info card
- i18n dictionaries → src/i18n/*.json (+parity tests); light-theme badge fixes
- frontend tests 15→28

test/i18n.test.mjs

@@ -0,0 +1,27 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+
+const en = JSON.parse(readFileSync(new URL('../src/i18n/en.json', import.meta.url)));
+const ru = JSON.parse(readFileSync(new URL('../src/i18n/ru.json', import.meta.url)));
+
+test('i18n: en and ru dictionaries carry the same key set', () => {
+  const enKeys = Object.keys(en).sort();
+  const ruKeys = Object.keys(ru).sort();
+  assert.deepEqual(enKeys, ruKeys);
+});
+
+test('i18n: no empty values', () => {
+  for (const [lang, d] of [['en', en], ['ru', ru]]) {
+    for (const [k, v] of Object.entries(d)) {
+      assert.ok(typeof v === 'string' && v.length > 0, `${lang}:${k} is empty`);
+    }
+  }
+});
+
+test('i18n: placeholders match between languages', () => {
+  const ph = (s) => (s.match(/\{\w+\}/g) || []).sort().join(',');
+  for (const k of Object.keys(en)) {
+    assert.equal(ph(en[k]), ph(ru[k]), `placeholder mismatch in ${k}`);
+  }
+});