fix: update import paths after core library reorganization

- Fix aitbc/__init__.py imports to use utils subpackage
- Update lazy exports to reference new subpackage paths
- Fix middleware import paths
- Fix utils subpackage internal imports to use parent level

aitbc/__init__.py

@@ -25,7 +25,7 @@ from .constants import (
     PACKAGE_VERSION,
     REPO_DIR,
 )
-from .env import (
+from .utils.env import (
     get_bool_env_var,
     get_env_var,
     get_float_env_var,
@@ -52,7 +52,7 @@ from .middleware import (
     RequestValidationMiddleware,
     ErrorHandlerMiddleware,
 )
-from .paths import (
+from .utils.paths import (
     ensure_dir,
     ensure_file_dir,
     get_blockchain_data_path,
@@ -82,7 +82,7 @@ _LAZY_EXPORTS: dict[str, tuple[str, str]] = {
     "DatabaseService": ("database_service", "DatabaseService"),
     "SQLiteDatabaseService": ("database_service", "SQLiteDatabaseService"),
     "DatabaseServiceFactory": ("database_service", "DatabaseServiceFactory"),
-    "AsyncAITBCHTTPClient": ("http_client", "AsyncAITBCHTTPClient"),
+    "AsyncAITBCHTTPClient": ("network.http_client", "AsyncAITBCHTTPClient"),
     "BaseAITBCConfig": ("config", "BaseAITBCConfig"),
     "AITBCConfig": ("config", "AITBCConfig"),
     "retry": ("decorators", "retry"),
@@ -98,9 +98,9 @@ _LAZY_EXPORTS: dict[str, tuple[str, str]] = {
     "validate_email": ("validation", "validate_email"),
     "validate_non_empty": ("validation", "validate_non_empty"),
     "validate_positive_number": ("validation", "validate_positive_number"),
-    "validate_range": ("validation", "validate_range"),
-    "validate_chain_id": ("validation", "validate_chain_id"),
-    "validate_uuid": ("validation", "validate_uuid"),
+    "validate_range": ("utils.validation", "validate_range"),
+    "validate_chain_id": ("utils.validation", "validate_chain_id"),
+    "validate_uuid": ("utils.validation", "validate_uuid"),
     "run_sync": ("async_helpers", "run_sync"),
     "gather_with_concurrency": ("async_helpers", "gather_with_concurrency"),
     "run_with_timeout": ("async_helpers", "run_with_timeout"),

aitbc/utils/env.py

@@ -5,7 +5,7 @@ Centralized utilities for loading and managing environment variables
 
 import os
 from typing import Optional
-from .exceptions import ConfigurationError
+from ..exceptions import ConfigurationError
 
 
 def get_env_var(key: str, default: str = "") -> str:

aitbc/utils/json_utils.py

@@ -6,7 +6,7 @@ Centralized JSON loading, saving, and manipulation
 import json
 from pathlib import Path
 from typing import Dict, Any, List, Optional
-from .exceptions import ConfigurationError
+from ..exceptions import ConfigurationError
 
 
 def load_json(path: Path) -> Dict[str, Any]:

aitbc/utils/paths.py

@@ -4,8 +4,8 @@ Centralized path resolution and directory management
 """
 
 from pathlib import Path
-from .constants import DATA_DIR, CONFIG_DIR, LOG_DIR, REPO_DIR
-from .exceptions import ConfigurationError
+from ..constants import DATA_DIR, CONFIG_DIR, LOG_DIR, REPO_DIR
+from ..exceptions import ConfigurationError
 
 
 def get_data_path(subpath: str = "") -> Path:

aitbc/utils/validation.py

@@ -5,7 +5,7 @@ Common validators for AITBC applications
 
 import re
 from typing import Any, Optional
-from .exceptions import ValidationError
+from ..exceptions import ValidationError
 
 
 def validate_address(address: str) -> bool: