Clean up stale SQLite references and leaked secrets

- Remove invalid DB_DATABASE=:memory: from phpunit.xml (SQLite-only, breaks pgsql)
- Remove duplicate pgsql config block with SQLite leftovers (busy_timeout, journal_mode)
- Delete .env.prod_fixed containing hardcoded API keys and outdated SQLite config

Author: dotMavriQ

.env.prod_fixed

@@ -31,18 +31,6 @@
 
     'connections' => [
 
-        'pgsql' => [
-            'driver' => 'pgsql',
-            'url' => env('DB_URL'),
-            'database' => env('DB_DATABASE', database_path('database.pgsql')),
-            'prefix' => '',
-            'foreign_key_constraints' => env('DB_FOREIGN_KEYS', true),
-            'busy_timeout' => null,
-            'journal_mode' => null,
-            'synchronous' => null,
-            'transaction_mode' => 'DEFERRED',
-        ],
-
         'mysql' => [
             'driver' => 'mysql',
             'url' => env('DB_URL'),

config/database.php

@@ -24,7 +24,6 @@
         <env name="BROADCAST_CONNECTION" value="null"/>
         <env name="CACHE_STORE" value="array"/>
         <env name="DB_CONNECTION" value="pgsql"/>
-        <env name="DB_DATABASE" value=":memory:"/>
         <env name="MAIL_MAILER" value="array"/>
         <env name="QUEUE_CONNECTION" value="sync"/>
         <env name="SESSION_DRIVER" value="array"/>