test(performance): count SQL statements only for the launch journey

Codex review: the M3U import, refresh-cancellation and Xtream benchmarks
also run with IPTVNATOR_PERF_CAPTURE=1, so the statement hook wrapped
every row of their bulk inserts and changed what they measure.

SQL counting now also needs IPTVNATOR_PERF_COUNT_SQL=1, which only the
launch journey sets; a harness test fails if another source sets it.
Startup phases, the window snapshot and the read handler stay on the
capture flag. Without SQL counting no ready-to-show listener is attached,
so a zero is never reported for statements nobody counted.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/electron-backend-e2e/src/journeys/launch-journey-app.ts

@@ -129,11 +129,14 @@ export async function measureLaunchJourney(
     try {
         await cp(templateDirectory, dataDirectory, { recursive: true });
         // IPTVNATOR_PERF_CAPTURE turns on the main-process counters and
-        // their read handler; see journey-main-counters.ts.
+        // their read handler, IPTVNATOR_PERF_COUNT_SQL the SQL statement
+        // count behind main.sqlStatementsBeforeReadyToShow; only this journey
+        // sets it. See journey-main-counters.ts.
         const env = buildElectronLaunchEnvironment(
             dataDirectory,
             launchOptions({
                 IPTVNATOR_PERF_CAPTURE: '1',
+                IPTVNATOR_PERF_COUNT_SQL: '1',
                 IPTVNATOR_TRACE_IPC: '1',
             })
         );

apps/electron-backend-e2e/src/performance/journey-main-counters.spec.ts

@@ -1,4 +1,6 @@
 import assert from 'node:assert/strict';
+import { readdirSync, readFileSync } from 'node:fs';
+import { join, relative, resolve } from 'node:path';
 import test from 'node:test';
 
 import {
@@ -124,3 +126,22 @@ test('rejects snapshots that were not frozen at the moments they claim', () => {
         /total-below-frozen: main.startupPhases/
     );
 });
+
+test('only the launch journey opts into SQL statement counting', () => {
+    // The import benchmarks also run with IPTVNATOR_PERF_CAPTURE=1; the SQL
+    // hook wraps every row of a bulk insert, so they must not enable it.
+    const sourceRoot = resolve(__dirname, '..');
+    const files = readdirSync(sourceRoot, { recursive: true })
+        .map(String)
+        .filter(
+            (file) => /\.(ts|cjs)$/.test(file) && !/\.spec\.ts$/.test(file)
+        );
+    const optedIn = files
+        .filter((file) =>
+            readFileSync(join(sourceRoot, file), 'utf8').includes(
+                'IPTVNATOR_PERF_COUNT_SQL'
+            )
+        )
+        .map((file) => relative(sourceRoot, join(sourceRoot, file)));
+    assert.deepEqual(optedIn, [join('journeys', 'launch-journey-app.ts')]);
+});