2965 2026 02 23 Parallel Tool Call Rollout Cc19323e

Parallel Tool-call Rollout via tiny-agent-os 1.2.5

Scope completed

• tun-d506 — bumped tiny-agent-os to >=1.2.5 and refreshed uv.lock.
• tun-q44p — enforced a hard cap of 3 concurrent tool executions by wrapping all runtime AgentTool.execute handlers with a shared semaphore in agent_config.py.
• tun-5nny — hardened RequestOrchestrator tool lifecycle handling:
  • strict tool_execution_start args normalization (dict or JSON object string only)
  • fail-loud TypeError on malformed payloads
  • explicit duration semantics for parallel batches (suppress per-tool duration when batch execution is detected)
• tun-6qpn — updated TUI status behavior for parallel starts/completions:
  • status bar tracks multiple in-flight tools coherently
  • callbacks now emit completion before last-action updates
  • shell status path aligned with the same completion semantics

Repo truth updates

• README migration note now reflects parallel batches with max 3 in-flight calls.
• Changelog Unreleased section documents dependency cutover, runtime cap, orchestrator hardening, and UI behavior update.

Validation

• uv run ruff check --fix .
• uv run ruff check .
• uv run pytest tests/unit/core/test_tool_concurrency_limit.py tests/unit/core/test_request_orchestrator_parallel_tools.py tests/unit/ui/test_status_bar_layout.py tests/system/cli/test_repl_support.py tests/unit/ui/test_tool_panel_css_flow.py
• uv run pytest
• uv run python -c "import importlib.metadata as m; print(m.version('tiny-agent-os'))" -> 1.2.5