Initial import of fitme3070.pt platform

Plain-PHP fleet platform with id.andmore.pt SSO. Wires shared/platform-tools
as a submodule (platform_update, backups, git/migration tools) like the other
platforms.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

uploads/.htaccess

@@ -0,0 +1,11 @@
+# User-uploaded content: never execute as PHP.
+# Uses <FilesMatch> + <IfModule> so it works with both mod_php and PHP-FPM.
+<IfModule mod_php.c>
+    php_flag engine off
+</IfModule>
+RemoveHandler .php .phtml .php3 .php4 .php5 .php7
+RemoveType .php .phtml
+<FilesMatch "\.(php|phtml|phar|pht|php5|php7|shtml)$">
+    Require all denied
+</FilesMatch>
+Options -Indexes