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Changelog

Unreleased

Honesty repairs to the wiring surface (the credo: color/verdict vocabulary only where a real check ran; no receipt no accept; the honest null is first-class).

  • Edges are DECLARED, not probed: plexus never imports, resolves, or runs the tools, so each edge is tagged evidence: "declared" and the "grounded, not asserted" / "traces back to real code" / "genuinely compose" wording is gone.
  • Duplicate organ ids are NAMED (discover().collisions, validate reports duplicate_organs and exits 1) instead of collapsing last-writer-wins.
  • discover stamps a re-runnable receipt: plexus version, UTC timestamp, and per-manifest source + sha256 over canonical content.
  • validate now fails on an emit with no module evidence and never raises on a malformed external manifest (missing organ / capability).
  • plan_to marks a hop runnable: false and names the absence instead of coercing an undeclared CLI into a command.
  • Declare the schema-exact Mneme/Crucible replay loop: crucible.replay-template/1 routes Crucible→Mneme and crucible.replay-pack/1 routes Mneme→Crucible, while retaining the existing Mneme→Crucible thesis route.

0.2.0

  • Graph export (to_mermaid, to_dot; plexus graph --format mermaid|dot): render the mesh as a diagram, self-loops marked distinctly.
  • Pipeline runner (pipeline_script; plexus run --goal ORGAN): turn a plan into a runnable, ordered shell script that ends at the target, with feedback loops surfaced as a comment.
  • COMPARISON.md: grounded positioning vs MCP / LangGraph / Dagster / CrewAI — where plexus wins (decentralized, evidence-cited discovery) and where it does not (no execution engine).
  • Manifest export (export_all, plexus export): write each flagship's <organ>.interop.json — the exact file a tool ships to join the mesh. The five real manifests are committed under manifests/, and a round-trip test proves discovery from the JSON files matches the in-code registry exactly (the format is lossless — the premise of decentralized discovery).
  • MCP server (mcp.py, plexus mcp): a zero-dep stdio JSON-RPC server exposing discover / wiring / plan / route as MCP tools, so an agent can query the mesh mid-task (not just a human at a CLI). handle() is transport-free and tested.
  • 31 falsifiers total.

0.1.0

Initial release.

  • Manifest model (Manifest, Port) + validator: a tool's interop contract as plain JSON, with consumable_as aliasing and per-port module evidence.
  • Mesh discovery (discover, Mesh): producer→consumer edges by capability, with self-loop marking and an orphans() honesty surface (unmet inputs / unconsumed outputs).
  • Planning (plan_to, route): upstream pipeline to feed a target (Kahn ordering with feedback loops reported in cyclic), and shortest capability path between two tools.
  • Built-in registry: five flagship manifests (gather, crucible, forum, index, mneme) transcribed by hand from a 2026-07-07 source survey (declared, not re-checked at runtime); external manifests via load_dir over *.interop.json.
  • CLI: discover, wiring, plan, route, validate.
  • 17 falsifiers; zero runtime dependencies.