Implement parallel tool execution in AgentLoop, following the approach
used in Nanobot (_partition_tool_batches) and Zeroclaw (parallel_tools).
Key changes:
- partition_tool_batches(): group tool calls into batches based on
concurrency_safe flag. Safe tools run in parallel via join_all;
exclusive tools (e.g. bash) run in their own sequential batch.
- execute_tools(): now uses batching instead of flat sequential loop.
- CalculatorTool: add read_only() -> true so it participates in
parallel batches (it has no side effects, so concurrency_safe = true).
4 unit tests added covering: mixed safe/exclusive, all-safe single
batch, all-exclusive separate batches, unknown tool defaults.
- Fetch URL and extract readable text
- HTML to plain text conversion
- Removes scripts, styles, and HTML tags
- Decodes HTML entities
- JSON pretty printing
- SSRF protection
- Includes 6 unit tests
- HTTP client with GET/POST/PUT/DELETE/PATCH support
- Domain allowlist for security
- SSRF protection (blocks private IPs, localhost)
- Response size limit and truncation
- Timeout control
- Includes 8 unit tests
- Execute shell commands with timeout
- Safety guards block dangerous commands (rm -rf, fork bombs)
- Output truncation for large outputs
- Working directory support
- Includes 7 unit tests
- Edit file by replacing old_text with new_text
- Supports multiline edits
- Fuzzy line-based matching for minor differences
- replace_all option for batch replacement
- Includes 5 unit tests
- Introduced a new CalculatorTool for performing various arithmetic and statistical calculations.
- Enhanced the AgentLoop to support tool execution, including handling tool calls in the process flow.
- Updated ChatMessage structure to include optional fields for tool call identification and names.
- Modified the Session and SessionManager to manage tool registrations and pass them to agents.
- Updated the OpenAIProvider to serialize tool-related message fields.
- Added a ToolRegistry for managing multiple tools and their definitions.
- Implemented tests for the CalculatorTool to ensure functionality and correctness.
