From 52a83439b124d30100e3c9dca89512f10ce212fc Mon Sep 17 00:00:00 2001
From: peptiderepo <peptiderepo@users.noreply.github.com>
Date: Tue, 14 Apr 2026 01:27:02 +0700
Subject: [PATCH] =?UTF-8?q?fix:=20budget=20check=20strict=20comparison=20b?=
 =?UTF-8?q?ug=20=E2=80=94=200=20!=3D=3D=200.0=20in=20PHP=20(v4.4.2)?=
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is_budget_exceeded() used `0 === $budget` but floatval() returns float,
so 0 (int) === 0.0 (float) is always false. This caused unlimited
budget ($0) to be treated as exceeded, blocking all AI generation.

Same bug existed in the admin display (showed "$0.00" instead of
"Unlimited" for budget remaining).

This was a P1 bug that prevented ALL AI content generation since v4.3.0.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 includes/class-psa-admin.php        | 2 +-
 includes/class-psa-cost-tracker.php | 4 ++--
 peptide-search-ai.php               | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/includes/class-psa-admin.php b/includes/class-psa-admin.php
index 4b23ca7..fc6a442 100755
--- a/includes/class-psa-admin.php
+++ b/includes/class-psa-admin.php
@@ -483,7 +483,7 @@ class PSA_Admin {
 		$current_spend  = PSA_Cost_Tracker::get_monthly_spend();
 		$current_tokens = PSA_Cost_Tracker::get_monthly_tokens();
 		$budget         = floatval( self::get_setting( 'monthly_budget', PSA_Config::DEFAULT_MONTHLY_BUDGET ) );
-		$budget_remaining = ( 0 === $budget ) ? __( 'Unlimited', 'peptide-search-ai' ) : '$' . number_format( max( 0, $budget - $current_spend ), 2 );
+		$budget_remaining = ( 0.0 === $budget ) ? __( 'Unlimited', 'peptide-search-ai' ) : '$' . number_format( max( 0, $budget - $current_spend ), 2 );
 		$recent_logs    = PSA_Cost_Tracker::get_recent_logs( 20 );
 
 		?>
diff --git a/includes/class-psa-cost-tracker.php b/includes/class-psa-cost-tracker.php
index 8474b76..261d88c 100755
--- a/includes/class-psa-cost-tracker.php
+++ b/includes/class-psa-cost-tracker.php
@@ -208,8 +208,8 @@ class PSA_Cost_Tracker {
 		$settings = get_option( 'psa_settings', array() );
 		$budget   = floatval( $settings['monthly_budget'] ?? PSA_Config::DEFAULT_MONTHLY_BUDGET );
 
-		// Budget of 0 = unlimited.
-		if ( 0 === $budget ) {
+		// Budget of 0 = unlimited. Use loose comparison because floatval() returns float.
+		if ( 0.0 === $budget ) {
 			return false;
 		}
 
diff --git a/peptide-search-ai.php b/peptide-search-ai.php
index 4c1ddce..d5921b4 100755
--- a/peptide-search-ai.php
+++ b/peptide-search-ai.php
@@ -3,7 +3,7 @@
  * Plugin Name: Peptide Search AI
  * Plugin URI:  https://example.com/peptide-search-ai
  * Description: Searchable peptide database with AI-powered auto-population and browsable directory.
- * Version:     4.4.1
+ * Version:     4.4.2
  * Author:      Terence
  * License:     GPL v2 or later
  * Text Domain: peptide-search-ai
@@ -15,7 +15,7 @@ if ( ! defined( 'ABSPATH' ) ) {
 	exit;
 }
 
-define( 'PSA_VERSION', '4.4.1' );
+define( 'PSA_VERSION', '4.4.2' );
 define( 'PSA_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
 define( 'PSA_PLUGIN_URL', plugin_dir_url( __FILE__ ) );
 define( 'PSA_PLUGIN_FILE', __FILE__ );