Feat: Implement token tracking, soft delete, and Admin UI improvements

app/api/admin_backend.py

@@ -26,6 +26,9 @@ class ModuleResponse(BaseModel):
     is_active: bool
     created_at: datetime
     last_rotated_at: datetime
+    ingress_tokens: int
+    egress_tokens: int
+    total_tokens: int
 
     class Config:
         from_attributes = True
@@ -55,10 +58,14 @@ def create_module(
 
 @router.get("/modules", response_model=List[ModuleResponse])
 def get_modules(
+    include_archived: bool = False,
     db: Session = Depends(get_db),
     current_user: str = Depends(get_current_user)
 ):
-    return db.query(Module).all()
+    query = db.query(Module)
+    if not include_archived:
+        query = query.filter(Module.is_active == True)
+    return query.all()
 
 @router.post("/modules/{module_id}/rotate", response_model=ModuleResponse)
 def rotate_module_key(
@@ -79,12 +86,35 @@ def rotate_module_key(
 @router.delete("/modules/{module_id}")
 def delete_module(
     module_id: int,
+    hard_delete: bool = False,
     db: Session = Depends(get_db),
     current_user: str = Depends(get_current_user)
 ):
     db_module = db.query(Module).filter(Module.id == module_id).first()
     if not db_module:
         raise HTTPException(status_code=404, detail="Module not found")
-    db.delete(db_module)
+    
+    if hard_delete:
+        db.delete(db_module)
+        message = "Module permanently deleted"
+    else:
+        db_module.is_active = False
+        message = "Module archived"
+    
     db.commit()
-    return {"status": "success"}
+    return {"status": "success", "message": message}
+
+@router.post("/modules/{module_id}/restore", response_model=ModuleResponse)
+def restore_module(
+    module_id: int,
+    db: Session = Depends(get_db),
+    current_user: str = Depends(get_current_user)
+):
+    db_module = db.query(Module).filter(Module.id == module_id).first()
+    if not db_module:
+        raise HTTPException(status_code=404, detail="Module not found")
+    
+    db_module.is_active = True
+    db.commit()
+    db.refresh(db_module)
+    return db_module