Adopt reusable CI standard + PHPUnit conversion (#22)

Squash-merge of PR #22: adopt shared reusable CI workflow, convert PHPUnit to stubs, update branch-protection contexts.

QA-approved at 05d8094a1d. All required CI checks green.

Agent-Session: 2026-06-17-prcore-ci-deploy

includes/cpt/class-pr-core-peptide-meta-schema.php

@@ -0,0 +1,144 @@
+<?php
+/**
+ * Peptide Meta Schema.
+ *
+ * @package Peptide_Repo_Core
+ */
+
+declare(strict_types=1);
+
+/**
+ * Returns the complete meta field definition map used by PR_Core_Peptide_CPT
+ *
+ * @package Peptide_Repo_Core
+ */
+
+/**
+ * Meta field schema definitions for the peptide CPT.
+ *
+ * What: Returns the complete meta field definition map used by PR_Core_Peptide_CPT.
+ * Who calls it: PR_Core_Peptide_CPT::get_meta_fields() delegates here.
+ * Dependencies: PR_Core_Peptide_CPT (for sanitize callbacks), PR_Core_Schema_Sanitizers,
+ *               PR_Core_Verification_Sanitizers.
+ *
+ * @see cpt/class-pr-core-peptide-cpt.php — Consumer of this schema.
+ */
+class PR_Core_Peptide_Meta_Schema {
+
+	/**
+	 * Return the full meta field definition array for the peptide CPT.
+	 *
+	 * Keys map to meta_key strings; values are arrays with type, default, and sanitize.
+	 *
+	 * @return array<string, array<string, mixed>>
+	 */
+	public static function get_fields(): array {
+		return array(
+			'display_name'              => array(
+				'type'     => 'string',
+				'default'  => '',
+				'sanitize' => 'sanitize_text_field',
+			),
+			'aliases'                   => array(
+				'type'     => 'string',
+				'default'  => '[]',
+				'sanitize' => array( PR_Core_Schema_Sanitizers::class, 'sanitize_json_array' ),
+			),
+			'molecular_formula'         => array(
+				'type'     => 'string',
+				'default'  => '',
+				'sanitize' => 'sanitize_text_field',
+			),
+			'molecular_weight'          => array(
+				'type'     => 'number',
+				'default'  => 0,
+				'sanitize' => 'floatval',
+			),
+			'cas_number'                => array(
+				'type'     => 'string',
+				'default'  => '',
+				'sanitize' => 'sanitize_text_field',
+			),
+			'drugbank_id'               => array(
+				'type'     => 'string',
+				'default'  => '',
+				'sanitize' => 'sanitize_text_field',
+			),
+			'chembl_id'                 => array(
+				'type'     => 'string',
+				'default'  => '',
+				'sanitize' => 'sanitize_text_field',
+			),
+			'evidence_strength'         => array(
+				'type'     => 'string',
+				'default'  => 'preclinical',
+				'sanitize' => array( PR_Core_Peptide_CPT::class, 'sanitize_evidence_strength' ),
+			),
+			'editorial_review_status'   => array(
+				'type'     => 'string',
+				'default'  => 'draft',
+				'sanitize' => array( PR_Core_Peptide_CPT::class, 'sanitize_review_status' ),
+			),
+			'last_editorial_review_at'  => array(
+				'type'     => 'string',
+				'default'  => '',
+				'sanitize' => 'sanitize_text_field',
+			),
+			'medical_editor_id'         => array(
+				'type'     => 'integer',
+				'default'  => 0,
+				'sanitize' => 'absint',
+			),
+			'_pr_last_source_verified'  => array(
+				'type'     => 'string',
+				'default'  => '',
+				'sanitize' => 'sanitize_text_field',
+			),
+			'_pr_last_reviewed'         => array(
+				'type'     => 'string',
+				'default'  => '',
+				'sanitize' => 'sanitize_text_field',
+			),
+			'_pr_next_review_by'        => array(
+				'type'     => 'string',
+				'default'  => '',
+				'sanitize' => 'sanitize_text_field',
+			),
+			'_pr_verification_velocity' => array(
+				'type'     => 'string',
+				'default'  => 'medium',
+				'sanitize' => array( PR_Core_Verification_Sanitizers::class, 'sanitize_velocity' ),
+			),
+			'_pr_verification_notes'    => array(
+				'type'     => 'string',
+				'default'  => '',
+				'sanitize' => 'sanitize_textarea_field',
+			),
+			'_pr_verification_status'   => array(
+				'type'     => 'string',
+				'default'  => 'current',
+				'sanitize' => array( PR_Core_Verification_Sanitizers::class, 'sanitize_status' ),
+			),
+			'_pr_molecular_formula'     => array(
+				'type'     => 'string',
+				'default'  => '',
+				'sanitize' => array( PR_Core_Schema_Sanitizers::class, 'sanitize_molecular_formula' ),
+			),
+			'_pr_molecular_weight'      => array(
+				'type'     => 'string',
+				'default'  => '',
+				'sanitize' => array( PR_Core_Schema_Sanitizers::class, 'sanitize_molecular_weight_string' ),
+			),
+			'_pr_aliases'               => array(
+				'type'     => 'string',
+				'default'  => '[]',
+				'sanitize' => array( PR_Core_Schema_Sanitizers::class, 'sanitize_json_array' ),
+			),
+			'_pr_faq_items'             => array(
+				'type'     => 'string',
+				'default'  => '[]',
+				'sanitize' => array( PR_Core_Schema_Sanitizers::class, 'sanitize_faq_items' ),
+			),
+		);
+	}
+}