Merge pull request vxcontrol#144 from vxcontrol/feature/project_impro…

…vements

Multiple changes for project improvements

fix: skip Authorization header for official Gemini API

Only send Bearer token to LiteLLM/proxy endpoints, not to the original generativelanguage.googleapis.com which uses query parameter auth only

feat: implement DuckDuckGo search tool with HTML response parsing

- Added a new DuckDuckGo search tool that performs web searches and handles HTML responses.
- Implemented integration tests for basic search functionality, error handling for disabled tools, and validation of JSON input.
- Updated the search method to use POST requests with form data, improving compatibility with DuckDuckGo's API.
- Introduced HTML parsing logic to extract search results, including titles, URLs, and descriptions.
- Added test data for various search scenarios to ensure robust testing of the new functionality.

feat: integrate Graphiti configuration and management into installer

- Added Graphiti configuration options to the installer, including deployment type, server URL, timeout, and model name.
- Implemented Graphiti management in the installer processor, allowing for embedded, external, or disabled deployment modes.
- Enhanced the user interface with a dedicated Graphiti configuration form, providing a streamlined setup experience.
- Updated environment variables and README documentation to reflect new Graphiti settings and usage instructions.
- Improved overall installer logic to accommodate Graphiti alongside existing services.

feat: update langchaingo to v0.1.13-update.5 and enhance error handling

- Bump github.com/vxcontrol/langchaingo from v0.1.13-update.4 to v0.1.13-update.5
- Improve error handling in providers (context cancellation, timeouts)
- Update Docker client to v28.2.2
- Refresh test reports for all providers
- Enhance ctester logging and utilities

Merge pull request #1 from vxcontrol/feature/frontend

feat: new frontend version

chore: Add GitHub templates for pull requests, issues, and saved repl…

…ies; implement CI workflow for Docker build and testing