Upgrade PHPStan to 2.x and raise analysis level from 6 to 10

- Bump phpstan/phpstan ^2.0 and szepeviktor/phpstan-wordpress ^2.0
- Move the analysis level into phpstan.neon (single source) and raise it to 10
- Add Val, a runtime coercion helper that narrows untyped WordPress boundary
  values (wpdb rows, REST params, superglobals, options) with explicit checks
  instead of blind casts, plus unit tests
- Type value-object fromRow() params as stdClass (what wpdb returns) and map
  columns through Val so unexpected shapes degrade safely
- Use %i identifier placeholders for table names in all wpdb::prepare() calls
  so every query string is a literal and identifiers are escaped by WordPress;
  raises the minimum WordPress version to 6.2 where %i was introduced
- Guard wpdb::prepare() null result before wpdb::query() in updateTax()
- Fix nullable get_permalink()/strtotime() handling, list types at REST and
  capability call sites, dead null-coalescing on checked superglobals, and
  narrow get_users() results before mapping
- Register Val method names with the ValidatedSanitizedInput sniff so it
  validates the real sanitizer around each superglobal read
- Update repository unit tests for the %i placeholder arguments

Co-Authored-By: Claude Fable 5 <[email protected]>

src/GroupClass/EnrollmentRepository.php

@@ -30,7 +30,7 @@ class EnrollmentRepository {
 
 	public function findById( int $id ): ?Enrollment {
 		$row = $this->db->get_row(
-			$this->db->prepare( "SELECT * FROM {$this->table} WHERE id = %d", $id )
+			$this->db->prepare( 'SELECT * FROM %i WHERE id = %d', $this->table, $id )
 		);
 
 		return $row ? Enrollment::fromRow( $row ) : null;
@@ -42,7 +42,8 @@ class EnrollmentRepository {
 	public function countActiveForOffering( int $offeringId ): int {
 		return (int) $this->db->get_var(
 			$this->db->prepare(
-				"SELECT COUNT(*) FROM {$this->table} WHERE offering_id = %d AND status = %s",
+				'SELECT COUNT(*) FROM %i WHERE offering_id = %d AND status = %s',
+				$this->table,
 				$offeringId,
 				Enrollment::STATUS_ACTIVE
 			)
@@ -55,7 +56,8 @@ class EnrollmentRepository {
 	public function countActiveForStudent( int $studentId ): int {
 		return (int) $this->db->get_var(
 			$this->db->prepare(
-				"SELECT COUNT(*) FROM {$this->table} WHERE student_id = %d AND status = %s",
+				'SELECT COUNT(*) FROM %i WHERE student_id = %d AND status = %s',
+				$this->table,
 				$studentId,
 				Enrollment::STATUS_ACTIVE
 			)
@@ -68,7 +70,8 @@ class EnrollmentRepository {
 	public function hasActiveEnrollment( int $offeringId, int $studentId ): bool {
 		$count = (int) $this->db->get_var(
 			$this->db->prepare(
-				"SELECT COUNT(*) FROM {$this->table} WHERE offering_id = %d AND student_id = %d AND status = %s",
+				'SELECT COUNT(*) FROM %i WHERE offering_id = %d AND student_id = %d AND status = %s',
+				$this->table,
 				$offeringId,
 				$studentId,
 				Enrollment::STATUS_ACTIVE
@@ -86,7 +89,8 @@ class EnrollmentRepository {
 	public function findByStudent( int $studentId ): array {
 		$rows = $this->db->get_results(
 			$this->db->prepare(
-				"SELECT * FROM {$this->table} WHERE student_id = %d ORDER BY enrolled_at DESC",
+				'SELECT * FROM %i WHERE student_id = %d ORDER BY enrolled_at DESC',
+				$this->table,
 				$studentId
 			)
 		);
@@ -102,7 +106,8 @@ class EnrollmentRepository {
 	public function findByInstructor( int $instructorId ): array {
 		$rows = $this->db->get_results(
 			$this->db->prepare(
-				"SELECT * FROM {$this->table} WHERE instructor_id = %d ORDER BY enrolled_at DESC",
+				'SELECT * FROM %i WHERE instructor_id = %d ORDER BY enrolled_at DESC',
+				$this->table,
 				$instructorId
 			)
 		);
@@ -118,7 +123,8 @@ class EnrollmentRepository {
 	public function findAllActive(): array {
 		$rows = $this->db->get_results(
 			$this->db->prepare(
-				"SELECT * FROM {$this->table} WHERE status = %s ORDER BY enrolled_at DESC",
+				'SELECT * FROM %i WHERE status = %s ORDER BY enrolled_at DESC',
+				$this->table,
 				Enrollment::STATUS_ACTIVE
 			)
 		);