fix: standardize artifact directory structure for multi-distro support

Remove per-package subdirectories from build output to align with workflow expectations.
Update deploy workflow paths to match repository-based structure (dist/repository/*.rpm).
This enables consistent artifact handling across different Linux distributions.

tools/build

@@ -651,8 +651,8 @@ def build_package_docker(
     logger = logging.getLogger(__name__)
 
     try:
-        # Ensure dist directory exists with repository structure
-        package_dist_dir = dist_dir / repository / package_name
+        # Ensure dist directory exists with repository structure (no package subdirectory)
+        package_dist_dir = dist_dir / repository
         if not dry_run:
             package_dist_dir.mkdir(parents=True, exist_ok=True)