Remove the assigned-user and label filters

Workflows now move every overdue card of their source stack. A new
migration drops filter_user_ids and filter_label_ids; workflows that
had a filter keep running unfiltered. The version goes to 35.1.0 so
the migration runs on update.

Removed along with the filters: the labels and participants endpoints
and their Deck lookups, the dead-filter warnings and markers, and
CardService::enrichCards() in the card read. enrichCards() only added
labels, assignees and comment counts, and ran a permission check
against Deck's frozen uid.

lib/Migration/Version1001Date20260930120000.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\WorkflowDeckAutomation\Migration;
+
+use Closure;
+use OCP\DB\ISchemaWrapper;
+use OCP\Migration\IOutput;
+use OCP\Migration\SimpleMigrationStep;
+
+/**
+ * Drops the assigned-user and label filters. Workflows that had one keep
+ * running, now unfiltered — that was an explicit product decision.
+ *
+ * The columns have to go rather than just be ignored: Entity::fromRow()
+ * calls a setter for every selected column, and the Workflow entity no
+ * longer has these properties.
+ */
+class Version1001Date20260930120000 extends SimpleMigrationStep {
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		if (!$schema->hasTable('wfda_workflows')) {
+			return null;
+		}
+
+		$table = $schema->getTable('wfda_workflows');
+		$changed = false;
+		foreach (['filter_user_ids', 'filter_label_ids'] as $column) {
+			if ($table->hasColumn($column)) {
+				$table->dropColumn($column);
+				$changed = true;
+			}
+		}
+
+		return $changed ? $schema : null;
+	}
+}