restore: bring back f8a1310 (security review) state

Restores all files to the f8a1310 security-review snapshot as requested,
plus the 2 boot-critical fixes from a24c8a2 (config/session.php env()
instead of app()->environment(), and removal of the duplicate $activeTab
in ProjectMap.php) so the application actually boots.

Forward commit, no history rewrite. The 7d854ff state remains in history.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

config/session.php

@@ -169,7 +169,7 @@ return [
     |
     */
 
-    'secure' => env('SESSION_SECURE_COOKIE'),
+    'secure' => env('SESSION_SECURE_COOKIE', env('APP_ENV', 'production') === 'production'),
 
     /*
     |--------------------------------------------------------------------------