feat: Add session management, extensions, and browser enhancements (v0.4.0)

New Features:
- Session Management Enhancements:
  * Add list() method for retrieving all sessions with pagination support
  * Add get() method for retrieving individual session details by session ID
  * Add session labels support (set_labels/get_labels) for better organization
- Browser Module Enhancements:
  * Add captcha solving support for browser automation
  * Add extension support for AGB browser operations (extension.py)
- Context API Improvements:
  * Enhanced parameter validation for all context operations
  * Improved error messages for missing or invalid parameters
  * list_files() now supports optional parent_folder_path parameter

Bug Fixes:
- Fix missing parameter validation in context operations
- Fix API parameter mismatch (schema renamed to field_schema)
- Fix httpx connection error in integration tests
- Optimize context manager documentation

Documentation & Testing:
- Add comprehensive documentation for session management features
- Add examples for extensions, session listing, and label operations
- Add integration and unit tests for all new features
- Update API reference documentation

Files changed: 56 files, 8957 insertions(+), 237 deletions(-)

Author: AgbAccount

CHANGES.md

@@ -1,5 +1,40 @@
 # Changelog
 
+## [0.4.0] - 2025-10-31
+
+### New Features
+- **Session Management Enhancements**: Complete session lifecycle management with listing, retrieval, and labeling
+  - `list()` method for retrieving all sessions with pagination support
+  - `get()` method for retrieving individual session details by session ID
+  - Session labels support for better session organization and management
+- **Browser Module Enhancements**:
+  - Captcha solving support for browser automation
+  - Extension support for AGB browser operations
+- **Context API Improvements**:
+  - Enhanced parameter validation for all context operations
+  - Improved error messages for missing or invalid parameters
+  - `list_files()` now supports optional `parent_folder_path` parameter
+
+### Bug Fixes
+- **Context Validation**: Fixed missing parameter validation in context operations
+  - Added null and empty string checks for all required parameters
+  - Improved error handling and user feedback
+- **Browser Module**: Fixed API parameter mismatch (`schema` renamed to `field_schema`) to align with MCP field validation
+- **Testing**: Fixed httpx connection error in integration tests for context file URLs
+- **Context Manager**: Optimized documentation notes in `context_manager.sync()` function
+
+### Documentation & Testing
+- **Session Management**:
+  - Comprehensive documentation for session listing, retrieval, and label management
+  - Updated session management guide with new features
+  - New examples for session label operations
+- **Testing Coverage**:
+  - Integration tests for session labels functionality
+  - Unit tests for AGB and session modules
+  - Comprehensive validation tests for context operations (18 new test cases)
+  - Enhanced test coverage for file operations with parameter validation
+
+
 ## [0.3.0] - 2025-10-15
 
 ### New Features

agb/__init__.py

@@ -6,12 +6,13 @@
 from .context import Context, ContextService, ContextResult, ContextListResult
 from .context_manager import ContextManager, ContextStatusData, ContextInfoResult, ContextSyncResult
 from .context_sync import ContextSync, SyncPolicy, UploadPolicy, DownloadPolicy, DeletePolicy, ExtractPolicy, UploadStrategy, DownloadStrategy
+from .extension import ExtensionsService, ExtensionOption, Extension
 
 __all__ = [
     "AGB", "Session", "CreateSessionParams", "HTTPClient", "Client",
     # Context related exports
     "Context", "ContextService", "ContextResult", "ContextListResult",
     "ContextManager", "ContextStatusData", "ContextInfoResult", "ContextSyncResult",
     "ContextSync", "SyncPolicy", "UploadPolicy", "DownloadPolicy", "DeletePolicy", "ExtractPolicy",
-    "UploadStrategy", "DownloadStrategy",
+    "UploadStrategy", "DownloadStrategy","ExtensionsService","ExtensionOption","Extension",
 ]