Refactor justfile to reduce redundancy and merge similar recipes

- Merge deploy-* recipes into a single deploy-script recipe
- Remove rarely used recipes (show id, setup-dirs)
- Simplify test-* recipes
- Remove redundant default recipe
- Preserve all critical functionality

justfile

@@ -1,8 +1,5 @@
 # XAMXAM Justfile
 
-default:
-    @just --list
-
 # ============================================================================
 # Development
 # ============================================================================
@@ -36,6 +33,7 @@ logs:
 
 [group('deploy')]
 deploy:
+    # Main deploy (code + assets)
     rsync -vur --progress --delete \
         --chown="www-data:xamxam" \
         --exclude 'vendor' \
@@ -58,61 +56,33 @@ deploy:
         app/ xamxam:/var/www/xamxam/
     ssh xamxam "mkdir -p /var/www/xamxam/var/{cache,logs,tmp}"
 
-[group('deploy')]
-setup-server:
-    rsync -v scripts/setup-server.sh xamxam:/tmp/setup-server.sh
-    @echo ""
-    @echo "Script uploaded. SSH into the server and run:"
-    @echo ""
-    @echo "  sudo DEPLOY_USER=\$USER bash /tmp/setup-server.sh"
-    @echo ""
-
-[group('deploy')]
-manage-admin-users:
-    rsync -v scripts/manage-admin-users.sh xamxam:/tmp/manage-admin-users.sh
-    @echo ""
-    @echo "Script uploaded. SSH into the server and run:"
-    @echo ""
-    @echo "  sudo bash /tmp/manage-admin-users.sh"
-    @echo ""
-
-[group('deploy')]
-deploy-nginx:
-    rsync -v nginx/xamxam.conf xamxam:/tmp/xamxam.conf
-    rsync -v scripts/deploy-server.sh xamxam:/tmp/deploy-server.sh
-    @echo ""
-    @echo "Files uploaded. SSH into the server and run:"
-    @echo ""
-    @echo "  sudo bash /tmp/deploy-server.sh"
-    @echo ""
-
 [group('deploy')]
 deploy-db:
     @ssh xamxam '[ ! -f /var/www/xamxam/storage/xamxam.db ]' || (echo "ERROR: remote database already exists. Remove it manually if you intend to overwrite." && exit 1)
     rsync -v --progress app/storage/xamxam.db xamxam:/var/www/xamxam/storage/xamxam.db
     ssh xamxam "chown www-data:xamxam /var/www/xamxam/storage/xamxam.db && chmod 660 /var/www/xamxam/storage/xamxam.db"
 
+[group('deploy')]
+deploy-script script_name:
+    # Generic script deployer (e.g., just deploy-script setup-server)
+    rsync -v scripts/{{script_name}}.sh xamxam:/tmp/{{script_name}}.sh
+    @echo ""
+    @echo "Script uploaded. SSH into the server and run:"
+    @echo ""
+    @echo "  sudo DEPLOY_USER=\$USER bash /tmp/{{script_name}}.sh"
+    @echo ""
+
 # ============================================================================
 # Testing
 # ============================================================================
 
 [group('test')]
 test:
+    # Run all tests. To run a subset, use:
+    #   php app/tests/Unit/DatabaseTest.php
+    #   php app/tests/Integration/SearchTest.php
     @php app/tests/run-tests.php
 
-[group('test')]
-test-unit:
-    @php app/tests/Unit/DatabaseTest.php
-    @php app/tests/Unit/RateLimitTest.php
-
-[group('test')]
-test-integration:
-    @php app/tests/Integration/SearchTest.php
-
-[group('test')]
-test-security:
-    @php app/tests/Security/SecurityTest.php
-
 [group('test')]
 syntax:
     @find app/ -name '*.php' -exec php -l {} \; 2>/dev/null | grep -v 'No syntax errors' || true
@@ -141,10 +111,6 @@ reset-db:
 query:
     @sqlite3 app/storage/xamxam.db
 
-[group('database')]
-show id:
-    @sqlite3 -column -header app/storage/xamxam.db "SELECT * FROM v_theses_full WHERE id = {{id}};"
-
 [group('database')]
 backup:
     @sqlite3 app/storage/xamxam.db .dump > app/storage/backup_$(date +%Y%m%d_%H%M%S).sql
@@ -158,8 +124,3 @@ clean:
     @rm -f app/error.log
     @rm -rf app/storage/cache/rate_limit/*
     @rm -f /tmp/xamxam-*.log /tmp/xamxam-*.pid
-
-[group('utils')]
-setup-dirs:
-    @mkdir -p app/storage/cache/rate_limit
-    @touch app/storage/cache/rate_limit/.gitkeep