Add evolver plugin: self-evolving agent memory

[autogame-17]

What

Adds evolver — a self-evolving agent-memory plugin — to the marketplace.

Evolver gives the agent a persistent, auditable evolution memory via session hooks:

• sessionStart — injects a short summary of recent successful outcomes (scoped to the current workspace) as opening context, so the agent reuses what worked and avoids past failures.
• afterFileEdit — detects improvement signals (errors, perf, capability gaps, test failures…) in edits.
• stop — classifies the session's git diff and records the outcome to a local memory graph (or an EvoMap Hub if configured).

Plus a capability-evolver skill, an /evolve command, and a recall-and-record rule. In a non-git folder it surfaces a one-line notice that memory is inactive instead of failing silently.

It works with zero extra setup (local memory). Installing the optional @evomap/evolver npm package unlocks the full review-and-solidify pipeline; the hooks degrade gracefully when it's absent.

Structure

• evolver/ — plugin dir: .cursor-plugin/plugin.json, hooks/ (+ hooks.json), skills/, commands/, rules/, README.md, LICENSE.
• .cursor-plugin/marketplace.json — registers evolver.

License

MIT. The hook scripts are an original clean-room implementation (Node built-ins only, no external deps) written from the hook behavior spec — not derived from the GPL-licensed @evomap/evolver engine. Source repo: https://github.com/EvoMap/evolver-cursor-plugin

Validation

node scripts/validate-plugins.mjs → All plugins validated successfully. All hook scripts pass node --check; each reads stdin / writes JSON / exits 0 and never throws.

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Note

Medium Risk
Hooks run automatically on every session and file edit, write persistent data under the user home directory, spawn git/curl subprocesses, and may POST outcomes when Hub env vars are set.

Overview
Adds the evolver Cursor plugin to the repo and registers it in .cursor-plugin/marketplace.json, so users can install persistent “evolution memory” for the agent.

The new evolver/ package wires three Node hooks (sessionStart, afterFileEdit, stop) that recall recent successful outcomes into session context, flag improvement signals in edited content, and on task end classify the git diff into signals/status/score and append a JSONL entry under ~/.evolver/... (or an existing project graph). Optional EvoMap Hub recording uses env credentials and curl. Supporting pieces include workspace-scoped recall filtering, a hardened workspace-id file under .evolver/, plus a skill, /evolve command, and rule documenting recall → work → record. Hooks are designed to always exit 0 with JSON and degrade when git or Hub is unavailable.

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