Move frontend assertions out of the PHP test suite

[roncodes]

Why

server/tests/TelematicsHardeningTest.php and server/tests/CustomerContactIdentitySafetyTest.php reached across into the Ember addon with file_get_contents(__DIR__ . '/../../addon/...') and asserted on template/component source text.

That had three costs:

• UI edits sat on the backend CI critical path. A deleted panel in addon/components/customer/form.hbs broke the PHP suite, which skipped the coverage gate and therefore skipped the Codecov upload entirely.
• The assertions tested strings, not behavior. They passed on a match inside a comment and failed on a harmless rename.
• They contributed zero coverage — no server/src code executes in them.

What changed

All 15 addon/ reads are gone from the two PHP files. Every assertion is re-expressed in the Ember suite against behavior. Backend assertions in both files are untouched.

Was asserted as source text	Now asserted as
case 'active': return 'Connected'; in the status cell + details controller	cell/telematic-status and connectivity/telematics/details both map active/connected → Connected/success
this.args.resource?.public_id present, ?.uuid absent	webhookUrl builds from public_id, returns null when only the Ember uuid exists
'this.hasWebhookUrl', 'Provider polling' in the template	rendering <Telematic::Details> shows the URL, the unavailable message, or the polling copy per provider
'advancedCredentialFields', 'field.default_value'	endpoint fields land in the <details> section and fall back to the provider default_value
'format-date-fns this.lastSeenLabel ...'	Device::Details renders 18 Jun 2026, 15:28, - when never seen
'this.showWelcomeEmailOption', 'this.toggleWelcomeEmail'	welcome email is opt-in, gated on isNew + portal extension, writes meta.customer_portal.send_welcome_email without dropping sibling meta
'is_customer=true'	the user selector's query is { doesnt_have_contact: true, is_customer: true }

New: 8 test files. Extended: 6.

Two build fixes came along

The Ember suite could not load this addon's modules at all before this — every existing test file failed identically with Could not find module '@fleetbase/fleetops-engine/...'.

1. @ember/legacy-built-in-components added to devDependencies. It's an optional peer of ember-engines, so pnpm skips it and vendor.js dies on a missing module. Lockfile updated with pnpm install --lockfile-only; the diff is only this package.
2. index.js — lazyLoading is disabled only for ember test run from this package (process.argv.includes('test') && process.cwd() === __dirname). A lazy engine keeps its modules out of the dummy app. Host apps and ember build stay on the lazy path — verified: the production build still emits dist/engines-dist/@fleetbase/fleetops-engine/assets/engine-*.js.

Verification

PHP — both files green:

• TelematicsHardeningTest: 25 passed, 12 skipped (550 assertions)
• CustomerContactIdentitySafetyTest: 5 passed (43 assertions)
• php-cs-fixer --dry-run: clean

Ember.js CI steps, run locally:

• pnpm run lint — exit 0 (js, hbs, css, intl)
• pnpm run build — exit 0

Ember tests — the 27 new pure-logic unit assertions pass. The container-based tests (1 controller unit file, 6 rendering files) could not be executed: setupTest/setupRenderingTest fail for every test in this checkout, pre-existing ones included, on Failed to create an instance of 'service:universe/registry-service'. Treat those as unverified.

Known follow-ups (not in this PR)

• .github/workflows/ember.yml never runs ember test — only lint and build. These assertions gate nothing in CI yet. Wiring that up first needs the universe/registry-service container failure fixed and the generated it renders boilerplate tests cleaned up.
• Two more PHP files still read addon/, using dirname(__DIR__, 2) instead of __DIR__ . '/../../', which is why the original sweep missed them: server/tests/OrderFileAttachmentTest.php:6-7 and server/tests/OrderActivityFlowRegressionTest.php:108.
• scripts/pest-runner.php exits 0 with zero output in this environment — reproduces on untouched files, caused by the auto_prepend_file bootstrap it injects.
• Unit | Component | telematic/form: editing server uri updates resource credentials (pre-existing) calls prototype.setCredential.call({...}), but @action returns a pre-bound function so this.args is undefined.

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