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Changelog

All notable changes to SynapChart are documented here. Format follows Keep a Changelog; versioning follows Semantic Versioning. The authoritative copy is CHANGELOG.md in the repository.

[Unreleased]

Changed

  • Port Type System v2. Replaced the closed "registered data types" list and the fixed compatibility table with a two-axis model: a structural type (container / dtype / ndim / timed) that is enforced, plus a free-form, advisory role (e.g. lfp, spike_times, or anything you invent). Connection validation is now three-state — OK / WARN (role mismatch, still connectable) / ERROR (structural mismatch, blocked) — and new roles can be added in custom blocks without editing any core file. See NeuroData.

Added

  • Initial project scaffold: FastAPI backend, React + React Flow frontend.
  • The NeuroData envelope type and the port validator (now the v2 model above).
  • Block registry with auto-discovery, and the built-in block libraries: Data I/O, Behavior, LFP/EEG, Spikes, Visualization, and Flow Control, plus the 1D-Maze and 2D-Maze analysis libraries.
  • CLI entry point (the synapchart command) and pyproject.toml for pip distribution.
  • GitHub Actions CI (test matrix: Python 3.10 / 3.11 / 3.12) and a release workflow that publishes to PyPI on a version tag.
  • Security: a load-time consent gate for workflows containing custom code — opening a workflow with local or embedded blocks returns a code manifest without executing anything; embedded Python is registered only after you review and confirm it. Built-in templates remain trusted. Documented in SECURITY.md.
  • Test suite covering the reproducibility-critical core: DAG resolution, checkpoint cache-key derivation/invalidation, port + workflow validation, schema migration, and the execution engine (linear runs, cache reuse, parameter invalidation, error reporting, and batch iteration).

No tagged release yet

SynapChart is in active pre-release development (Alpha). Changes above are on the main branch; the first versioned PyPI release will appear here when a version tag is cut.