Combine phpstan, cs-check, cs-fix into lint-php recipe; fix lint issues + test failures + duplicate detection bug

justfile

@@ -349,17 +349,21 @@ lint-biome:
     @biome lint app/public/assets/js/
 
 [group('test')]
-phpstan:
+lint-php:
+    # Static analysis + coding standards check
     @vendor/bin/phpstan analyse --memory-limit=512M
-
-[group('test')]
-cs-check:
     @vendor/bin/php-cs-fixer check --no-interaction
 
 [group('test')]
 cs-fix:
     @vendor/bin/php-cs-fixer fix --no-interaction
 
+[group('test')]
+phpstan: lint-php
+
+[group('test')]
+cs-check: lint-php
+
 [group('test')]
 syntax:
     @find app/ -name '*.php' -exec php -l {} \; 2>/dev/null | grep -v 'No syntax errors' || true