Add debug logging to resolve_dependencies

backend/app/dependencies.py

@@ -10,8 +10,11 @@ Handles:
 - Conflict detection
 """
 
+import logging
 import re
 import yaml
+
+logger = logging.getLogger(__name__)
 from typing import List, Dict, Any, Optional, Set, Tuple
 from sqlalchemy.orm import Session
 from sqlalchemy import and_
@@ -659,9 +662,12 @@ def resolve_dependencies(
         CircularDependencyError: If circular dependencies are detected
         DependencyConflictError: If conflicting versions are required
     """
+    logger.info(f"resolve_dependencies: project={project_name}, package={package_name}, ref={ref!r}")
+
     # Resolve the initial artifact
     project = db.query(Project).filter(Project.name == project_name).first()
     if not project:
+        logger.warning(f"resolve_dependencies: project '{project_name}' not found")
         raise DependencyNotFoundError(project_name, package_name, ref)
 
     package = db.query(Package).filter(
@@ -669,13 +675,21 @@ def resolve_dependencies(
         Package.name == package_name,
     ).first()
     if not package:
+        logger.warning(f"resolve_dependencies: package '{package_name}' not found in project '{project_name}'")
         raise DependencyNotFoundError(project_name, package_name, ref)
 
+    logger.info(f"resolve_dependencies: found package id={package.id}")
+
     # Try to find artifact by tag or version
     resolved = _resolve_dependency_to_artifact(
         db, project_name, package_name, ref, ref
     )
     if not resolved:
+        # Debug: list available tags
+        from .models import Tag
+        tags = db.query(Tag).filter(Tag.package_id == package.id).limit(5).all()
+        tag_names = [t.name for t in tags]
+        logger.warning(f"resolve_dependencies: artifact not found for ref={ref!r}. Sample tags: {tag_names}")
         raise DependencyNotFoundError(project_name, package_name, ref)
 
     root_artifact_id, root_version, root_size = resolved