style: fix WPCS violations in config and admin classes

- Align equals signs in PSA_Config constant definitions
- Convert space indentation to tabs in PSA_Admin

includes/class-psa-admin.php

@@ -121,7 +121,7 @@ class PSA_Admin {
 			<?php
 			printf(
 				__( 'This plugin uses <a href="%s" target="_blank" rel="noopener">OpenRouter</a> to access AI models. OpenRouter provides a unified API for hundreds of models including open-source options like Gemini Flash, Llama, Mistral, Qwen, and DeepSeek, as well as commercial models.', 'peptide-search-ai' ),
-                escourl( 'https://openrouter.ai/' )
+				esc_url( 'https://openrouter.ai/' )
 			);
 			?>
 		</p>

includes/class-psa-config.php

@@ -35,5 +35,4 @@ class PSA_Config {
 	// API retry settings
 	const API_RETRY_MAX          = 3;
 	const API_RETRY_BASE_DELAY   = 5; // seconds
-
 }