refactor(environment): remove 'is_build_time' attribute from environment variable handling across the application to simplify configuration

database/migrations/2025_09_11_143432_remove_is_build_time_from_environment_variables_table.php

@@ -0,0 +1,38 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('environment_variables', function (Blueprint $table) {
+            // Check if the column exists before trying to drop it
+            if (Schema::hasColumn('environment_variables', 'is_build_time')) {
+                // Drop the is_build_time column
+                // Note: The unique constraints that included is_build_time were tied to old foreign key columns
+                // (application_id, service_id, database_id) which were removed in migration 2024_12_16_134437.
+                // Those constraints should no longer exist in the database.
+                $table->dropColumn('is_build_time');
+            }
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('environment_variables', function (Blueprint $table) {
+            // Re-add the is_build_time column
+            if (! Schema::hasColumn('environment_variables', 'is_build_time')) {
+                $table->boolean('is_build_time')->default(false)->after('value');
+            }
+        });
+    }
+};