[Pepps233]

Summary

Implements deterministic EVOLVE.md mutation writing and atomic harness activation over the selected proposal groups emitted by the evidence-ranking pipeline in #103, without enabling later interactive controls, prompt-boundary refresh, post-activation evaluation, or automated rollback behavior.

The Writer captures stable memory identity outside the rendered prompt, validates structured ADD, REMOVE, and REPLACE operations against the frozen base revision, and applies the complete selected batch to one temporary candidate before advancing the harness with compare-and-swap semantics.
It persists exact reversible diffs, proposal and evidence provenance, operation IDs, parent and resulting revisions, activation state, and the rollback parent so failed batches leave the prior harness active and interrupted retries remain idempotent.

Reasoning

The Writer preserves stable memory identity, validates a complete mutation batch before activation, and uses compare-and-swap semantics so concurrent harness changes cannot be overwritten.
Candidate and activation receipts remain durable and idempotent, while failed batches leave the active harness unchanged.

Changes

• Add deterministic EVOLVE.md parsing, stable memory catalogs, structured ADD/REMOVE/REPLACE application, and batch-level validation.
• Stage immutable candidates and activate them through the harness state store with exact base-version checks.
• Record reversible diffs, proposal and evidence provenance, operation IDs, parent and result revisions, activation time, and rollback parent in the ledger.
• Reject manual-memory removal, malformed Markdown, duplicate entries, sensitive content, stale bases, and tampered Writer receipts.
• Add integration coverage for successful activation, atomic failure, idempotent retry, concurrent activation conflicts, and receipt verification.

Testing

• node ../../node_modules/vitest/dist/cli.js --run test/evolution-memory-writer.test.ts test/control-plane.test.ts
• npm run check
• ./test.sh