v3.18.1: the raw envelope action takes the source override too

The events without a semantic builder (MT call, IMS registration, slices, ...)
are network-sourced, but the raw `envelope` action had no `src` override - the
only way to express them was the semantic set.  `envelope` now accepts
`src` (82 terminal / 83 network) exactly like the `event` action; the step
editor exposes it and the authoring guide gets the row.

Also: the guide marks `por` as SCP80-only (the normaliser refuses it
elsewhere) and the semantic-events section names the shared src override.

Tests: 813 frontend + 717 Python; sw cache simple-v382.

frontend/index.html

@@ -1877,7 +1877,7 @@
 // ===== Version =====
 // Single source of truth for the PWA version: shown in the header and used
 // by the server version check in pysimConnect().
-const SIMPLE_VERSION = '3.18.0';
+const SIMPLE_VERSION = '3.18.1';
 document.getElementById('app-version').textContent = 'v' + SIMPLE_VERSION;
 
 // ===== Tab switching =====
@@ -7328,6 +7328,7 @@ function testStepRender() {
 		if (step.kind === 'envelope') {
 			html += testFormRow('Event type', testFormInput('test-f-event', p.event === undefined ? 3 : p.event, '0..255'));
 			html += testFormRow('Event data (hex, optional)', testFormInput('test-f-data', p.data, '9B0100'));
+			html += testFormRow('Source override (hex, optional)', testFormInput('test-f-eventsrc', p.src, '82 terminal / 83 network'));
 		} else if (step.kind === 'event') {
 			// The semantic event download: the four events the server builds
 			// (others go through the raw envelope action with the hex the
@@ -7537,7 +7538,12 @@ function testStepCollect() {
 		const kind = val('test-step-kind') || step.kind;
 		step.kind = kind;
 		const p = {};
-		if (kind === 'envelope') { p.event = num('test-f-event', 3); p.data = hexNoMask('test-f-data'); }
+		if (kind === 'envelope') {
+			p.event = num('test-f-event', 3);
+			p.data = hexNoMask('test-f-data');
+			const src = hexNoMask('test-f-eventsrc');
+			if (src) p.src = src;
+		}
 		else if (kind === 'menu-select') {
 			const text = val('test-f-itemtext');
 			if (text) {
@@ -21110,6 +21116,7 @@ const LANG_RU = {
 	'event is required': 'нужен тип события',
 	'event fields must be an object': 'поля события должны быть объектом',
 	'Event data (hex)': 'Данные события (hex)',
+	'Source override (hex, optional)': 'Переопределение источника (hex, опционально)',
 	'Could not load the test scripts from the server': 'Не удалось загрузить тест-скрипты с сервера',
 	'Could not save the test script': 'Не удалось сохранить тест-скрипт',
 	'Could not delete the test script': 'Не удалось удалить тест-скрипт',

frontend/sw.js

@@ -1,4 +1,4 @@
-const CACHE = 'simple-v381';
+const CACHE = 'simple-v382';
 const URLS = [
   'index.html',
   'help.html',

frontend/tests/testscripts.test.js

@@ -209,6 +209,16 @@ test('the menu-select editor collects the item id or the text', () => {
 	assert.deepStrictEqual(_testEditStep.params, { item_id: 3 });
 });
 
+test('the envelope step collects the source override', () => {
+	_testEditStep = { type: 'action', kind: 'envelope', params: {} };
+	_testEditChecks = [];
+	_testEditStepIndex = 0;
+	fakeForm({ 'test-step-kind': 'envelope', 'test-f-event': '3', 'test-f-data': '9B0100',
+		'test-f-eventsrc': '83', 'test-f-sw': '', 'test-f-cdata': '', 'test-f-fail': 'error' });
+	testStepCollect();
+	assert.deepStrictEqual(_testEditStep.params, { event: 3, data: '9B0100', src: '83' });
+});
+
 test('the event step collects the type and the JSON fields', () => {
 	_testEditStep = { type: 'action', kind: 'event', params: {} };
 	_testEditChecks = [];