[Pepps233]

Summary

Implements a target-neutral Curator over the final verified lessons emitted by the recursive Reflector in #101 without enabling later deterministic validation, scoring, persistence, Writer, activation, or Counter behavior.

The Curator now evaluates provenance-rich lessons against frozen evolution-memory and instruction snapshots, requests strict tool-free decisions, suppresses duplicate and conflicting overlaps, and emits evidence-closed ADD, REMOVE, and atomic REPLACE proposals or non-executable deferred findings for unsupported targets.

Reasoning

Curating exact deltas instead of regenerating the full evolution memory preserves unrelated content and keeps every proposed change independently reviewable, validatable, and reversible.

Deriving proposal IDs, base versions, content digests, evidence closure, trace references, and execution scope from frozen inputs prevents the model from inventing immutable provenance or integrity fields.

Classifying each decision as novel, strengthening, duplicate, or conflicting allows the Curator to suppress known redundancy and instruction conflicts before proposals reach later deterministic stages.

Requiring concrete precision, enforcement, condition, or boundary changes for strengthening decisions ensures that cited existing guidance is materially improved instead of merely restated.

A strict response schema, exact-key parsing, no tool access, and bounded retries keep Curator execution isolated and fail closed when the model returns malformed or unsupported output.

Deferring skill and orchestration-source findings without executable deltas preserves useful lessons while avoiding writer routes that are intentionally outside this change.

Changes

• Define proposal contracts for target, scope, action, expected base state, supporting and contradicting evidence, trace provenance, benefits, acceptance criteria, risk, rollback, confidence, uncertainty, counterexamples, conflicts, and instruction relationships.
• Add exact evolution-memory ADD and REMOVE deltas plus atomic REPLACE deltas that combine one removal with one addition.
• Carry typed exact deltas into mutation planning without adding persistence or activation behavior.
• Provide the Curator with only final verified lessons, the frozen memory catalog, active memory-item metadata, and ordered applicable instruction snapshots with paths, precedence, digests, and content.
• Add a tool-free StructuredDeltaCurator with a strict structured-output schema, exact-key response parsing, stable idempotency, and bounded invalid-response retries.
• Derive proposal identity, memory and instruction digests, evidence closure, trace references, repository and runtime scope, source revisions, session lineage, and harness versions from trusted inputs.
• Resolve overlap references against known instruction documents and active memory items, require concrete strengthening semantics, and suppress duplicate or conflicting decisions.
• Preserve skill and orchestration-source lessons as deferred findings with no executable operation.
• Reject unknown lesson, evidence, trace, instruction, and memory-item references before emitting proposals.
• Add focused coverage for provenance-rich additions, removals, atomic replacements, deferred targets, overlap suppression, conflict references, stable metadata, invalid references, unsupported writer routes, and bounded retry behavior.

Testing

• npm run check
• node ../../node_modules/vitest/dist/cli.js --run test/curator.test.ts test/control-plane.test.ts from packages/evolution
• ./test.sh passed all affected evolution tests; one unrelated coding-agent FIFO-order assertion failed once.
• node ../../node_modules/vitest/dist/cli.js --run test/suite/subagent-startup.test.ts from packages/coding-agent passed on isolated rerun.