[WIP] Sign usign only PHP

[vitormattos]

Target: Make possible sign using only PHP

Start to implement jeidison/pdf-signer

ref: jeidison/signer-php#3

Administration setting: change the signature engine

Performance test: Results for 10 documents with clickToSign:

Engine	Start	End	Duration
PhpNative	18:32:49	18:33:08	19s
JSignPdf	18:33:55	18:34:32	37s

PhpNative is ~2× faster than JSignPdf (1.9s vs 3.7s per document). The native PHP implementation cuts signing time roughly in half by eliminating the Java/JVM overhead.

[Copilot]

Pull request overview

This PR introduces an alternative PDF signing path that can run using PHP-only signing (via jeidison/signer-php), adds an admin setting to choose the signature engine, and adjusts installation/configure-check behavior to avoid Java/JSignPdf requirements when not selected.

Changes:

• Add a new PhpNativeHandler sign engine implementation and unit tests.
• Add an admin UI setting to switch between JSignPdf and PHP native engines, and trigger configure-check refresh on change.
• Add page-dimensions metadata (PageDimensions) into signature params for use by the PHP-native engine.

Reviewed changes

Copilot reviewed 15 out of 18 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
vendor-bin/rector/composer.lock	Composer plugin-api-version lock update.
vendor-bin/phpunit/composer.lock	Composer plugin-api-version lock update.
composer.json	Adds VCS repository and requires jeidison/signer-php dev branch.
composer.lock	Locks jeidison/signer-php dependency and updates content hash/stability flags.
lib/Handler/SignEngine/PhpNativeHandler.php	Implements PHP-native PDF signing using signer-php, including appearance/timestamp/DocMDP handling.
lib/Handler/SignEngine/Pkcs12Handler.php	Adds support for delegating to PhpNativeHandler based on signature_engine.
lib/Handler/SignEngine/JSignPdfHandler.php	Uses SignerElementsService::RENDER_MODE_GRAPHIC_ONLY constant instead of raw string.
lib/Service/SignFileService.php	Adds PageDimensions into signature params from file metadata.
lib/Service/Install/InstallService.php	Skips Java/JSignPdf install steps depending on selected signature engine.
lib/Service/Install/ConfigureCheckService.php	Skips JSignPdf checks when not selected signature engine.
lib/Service/SignerElementsService.php	Adds RENDER_MODE_GRAPHIC_ONLY constant.
lib/Service/SignatureTextService.php	Uses new render-mode constant when computing signature width.
lib/Settings/Admin.php	Exposes signature_engine via initial-state for the admin UI.
src/views/Settings/SignatureEngine.vue	New settings section to choose signature engine and persist to AppConfig.
src/views/Settings/Settings.vue	Adds SignatureEngine to settings page (but currently breaks CollectMetadata registration).
src/store/configureCheck.js	Subscribes to engine-changed events to rerun configure-check.
tests/php/Unit/Handler/SignEngine/PhpNativeHandlerTest.php	New unit tests covering appearance/text wrapping/timestamp options/DocMDP behaviors.
tests/php/Unit/Service/SignFileServiceTest.php	New unit test coverage for PageDimensions propagation into signature params.

Comments suppressed due to low confidence (1)

lib/Service/Install/ConfigureCheckService.php:392

• When signature_engine is not JSignPdf, checkJSignPdf() now returns [], but checkSign() still always includes checkJava(). This can keep the configure-check in a permanent "need download" state due to Java errors even though Java/JSignPdf are intentionally disabled. Consider skipping checkJava() (or returning [] from it) when the configured signature engine is not JSignPdf, mirroring the logic added to checkJSignPdf().

	private function checkJava(): array {
		if (!empty($this->result['java'])) {
			return $this->result['java'];
		}

		$javaPath = $this->javaHelper->getJavaPath();
		if ($javaPath) {
			$resultOfVerify = $this->verify('java');
			if (count($resultOfVerify)) {

[Copilot]

$this->libreSignFile?->getMetadata()['d'] can throw a TypeError when getMetadata() returns null (File::getMetadata() is nullable). This breaks signature param generation (and the new unit test case where metadata is unset). Consider fetching metadata into a variable first (defaulting to []) and then reading ['d'], or otherwise guarding with is_array() before offset access.

[Copilot]

<CollectMetadata /> is still used in the template, but the CollectMetadata component is no longer imported/registered in this file. This will cause an unknown custom element/runtime error in the Settings page. Re-add the CollectMetadata import and include it in the components map (or remove it from the template if intentionally dropped).