fix: resolve import errors and missing V2 modules

bin/__init__.py

@@ -0,0 +1 @@
+# bin package

commands/__init__.py

@@ -4,6 +4,9 @@
 This module contains CLI command implementations for the itsup tool.
 """
 
-__all__ = ["init"]
+__all__ = ["init", "apply", "svc", "validate"]
 
 from commands.init import init
+from commands.apply import apply
+from commands.svc import svc
+from commands.validate import validate

lib/proxy.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+
+"""Proxy management for V2 - Stubs for compatibility"""
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+def write_proxies() -> None:
+    """Generate proxy configuration files.
+
+    V2 Note: In V2, proxy configuration is managed differently.
+    This is a stub for compatibility with existing code.
+    """
+    logger.info("write_proxies() called - V2 stub")
+    # TODO: Implement V2 proxy config generation if needed
+    pass
+
+
+def update_proxy() -> None:
+    """Update proxy with zero-downtime rollout.
+
+    V2 Note: In V2, proxy updates are managed differently.
+    This is a stub for compatibility with existing code.
+    """
+    logger.info("update_proxy() called - V2 stub")
+    # TODO: Implement V2 proxy update logic if needed
+    pass

lib/upstream.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+
+"""Upstream management for V2 - Stubs for compatibility"""
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+def write_upstreams() -> bool:
+    """Generate all upstream configurations.
+
+    V2 Note: This functionality is now in bin.write_artifacts module.
+    This stub forwards to the V2 implementation.
+
+    Returns:
+        True if all projects succeeded, False if any failed
+    """
+    logger.info("write_upstreams() called - forwarding to V2 implementation")
+    import bin.write_artifacts as write_artifacts_module
+
+    return write_artifacts_module.write_upstreams()
+
+
+def update_upstreams() -> None:
+    """Update upstreams with zero-downtime rollout.
+
+    V2 Note: In V2, upstream updates are handled via docker compose commands in the CLI.
+    This is a stub for compatibility with existing code.
+    """
+    logger.info("update_upstreams() called - V2 stub")
+    # TODO: Implement V2 upstream update logic if needed
+    pass