feat(batch-install-plugins): initial release v1.0.0

Add Batch Install Plugins from GitHub tool with:
- One-click installation of plugins from GitHub repositories
- Smart plugin discovery with metadata extraction and validation
- Confirmation dialog with plugin list preview
- Selective installation with keyword-based filtering
- Smart fallback: auto-retry with localhost:8080 on connection failure
- Enhanced debugging with frontend and backend logging
- 120-second confirmation timeout for user convenience
- Async httpx client for non-blocking I/O
- Complete i18n support across 11 languages
- Event emitter handling with fallback support
- Timeout guards on frontend JavaScript execution
- Filtered list consistency for confirmation and installation
- Auto-exclusion of tool itself from batch operations
- 6 regression tests with 100% pass rate

Documentation includes:
- English and Chinese READMEs with flow diagrams
- Popular repository examples (iChristGit, Haervwe, Classic298, suurt8ll)
- Mirrored docs for official documentation site
- Plugin index entries in both languages
- Comprehensive release notes (v1.0.0.md and v1.0.0_CN.md)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

docs/plugins/tools/index.md

@@ -4,5 +4,6 @@ OpenWebUI native Tool plugins that can be used across models.
 
 ## Available Tool Plugins
 
+- [Batch Install Plugins from GitHub](batch-install-plugins-tool.md) (v1.0.0) - One-click batch install plugins from GitHub repositories with confirmation and multi-language support.
 - [OpenWebUI Skills Manager Tool](openwebui-skills-manager-tool.md) (v0.3.0) - Simple native skill management (`list/show/install/create/update/delete`).
 - [Smart Mind Map Tool](smart-mind-map-tool.md) (v1.0.0) - Intelligently analyzes text content and proactively generates interactive mind maps to help users structure and visualize knowledge.