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Implement comprehensive tools system with function calling support

This PR introduces a comprehensive tools system that transforms Nova from a basic AI assistant into a powerful AI development platform.

Key Features Added

• Decorator-based Tool Creation - Simple @tool decorator for creating tools with automatic schema generation
• Multi-level Permission System - SAFE, ELEVATED, SYSTEM, and DANGEROUS permission levels with user consent flows
• Profile-based Tool Configuration - Different tool settings per AI profile with inheritance support
• Comprehensive Built-in Tools - File operations, web search, and conversation management tools
• Automatic Tool Discovery - Zero-configuration tool registration and discovery system
• Advanced Argument Parsing - Support for JSON objects, quoted strings, and complex data types
• Async-first Architecture - Proper resource management and concurrent execution support
• Extensive Testing - 401 tests passing with 64% code coverage including integration tests

Test plan

  • All 401 tests pass including new tool-specific tests
  • Code quality checks (Ruff, Black, isort) all green
  • Integration tests verify tool execution in chat context
  • Permission system tested with various scenarios
  • Profile configuration tested with inheritance and overrides
  • Error handling tested with malformed inputs and edge cases

🤖 Generated with Claude Code

Co-Authored-By: Claude noreply@anthropic.com

stephen-cox and others added 5 commits August 7, 2025 23:02
- Fix unused variable warnings in tool registry
- Fix boolean comparison in web search tests
- Improve JSON object argument parsing to handle both JSON and quoted strings
- Add new coding patterns to CLAUDE.md for tool development
- Ensure all tests pass and code quality checks are green

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
@stephen-cox stephen-cox merged commit fb76cce into main Aug 9, 2025
3 checks passed
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2 participants