Remove unused scripts and add missing modules to inventory-service

Removed from git (moved to unused/inventoryservice locally):
- extract_*.py scripts (one-time enum extraction tools)
- init_db.py, debug_ratings.py, test_suitbuilder*.py
- Old JSON outputs superseded by comprehensive_enum_database_v2.json

Added previously untracked required files:
- helpers.py (shared enum state for suitbuilder)
- suitbuilder.py (equipment optimization router)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

inventory-service/helpers.py

@@ -0,0 +1,17 @@
+"""
+Shared helper functions for inventory service and suitbuilder.
+This module contains utility functions that are used by both main.py and suitbuilder.py
+to avoid circular imports.
+"""
+
+# This will be populated by main.py after loading
+ENUM_MAPPINGS = None
+
+def set_enum_mappings(mappings):
+    """Set the enum mappings from main.py after loading."""
+    global ENUM_MAPPINGS
+    ENUM_MAPPINGS = mappings
+
+def get_enum_mappings():
+    """Get the loaded enum mappings."""
+    return ENUM_MAPPINGS