dsh-evolve

Self-evolving memory and skill lifecycle for DeepSeek Harness.

Your agent forgets everything between sessions. This plugin gives it durable memory, turns repeated procedures into reusable skills, and — crucially — keeps that knowledge from growing into a noise pile. Real evolution is mutation plus selection plus pruning; most memory plugins only do the first.

The plugin ships blank. It has no preloaded opinions about you or your work: only mechanisms and rules. Everything it learns is local to your install and never leaves it.

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Requirements

Requirement	Why
Node.js >= 22.5.0	Uses the built-in node:sqlite module for FTS5 full-text search. Node 20 will not work.
DeepSeek Harness 0.1.0-rc.7+	Host platform. Provides tools, storage, LLM, and (optionally) the web server.
git on PATH (optional)	Enables automatic memory checkpoints you can roll back. Without it, checkpoints are skipped.
tar on PATH (optional)	Enables pre-operation skill backups and skill_rollback. Without it, backups are skipped.
Linux / macOS	Developed and tested here. Windows is untested — path handling is platform-neutral, but git/tar availability differs.

Degradation is graceful by design: if SQLite/FTS5 is unavailable the plugin falls back to pure bigram recall, and any optional dependency that's missing disables only its own feature. It never blocks the harness from booting.

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Install

Straight from this repository — no npm package needed:

dsh plugin --profile web add github:chenzheshushi-commits/dsh-evolve

Pin a specific release instead of tracking main:

dsh plugin --profile web add "https://github.com/chenzheshushi-commits/dsh-evolve/releases/download/v0.4.1/dsh-evolve-0.4.1.tgz"

Then restart the harness — tools are discovered at startup, not hot-reloaded.

Or clone for development:

git clone https://github.com/chenzheshushi-commits/dsh-evolve.git
cd dsh-evolve
pnpm install
pnpm run build      # builds the web-settings client bundle
pnpm run test       # smoke + registration probe + web-route e2e

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What it does

Cross-session memory

Structured records (fact / preference / decision / lesson / todo / note) with scope (user = everywhere, project = here) and importance 1–3. Storage is JSON as the source of truth plus a Markdown mirror you can read and hand-edit.

Recall is zero-token and deterministic: bigram-Jaccard similarity fused with SQLite FTS5 BM25 through Reciprocal Rank Fusion. No embedding API, no per-turn model call. CJK text is tokenized correctly (searching 苹果 does not match 水果).

Relevant memories inject automatically each step based on the current message, and durable user preferences/facts inject as an always-on snapshot at the start of every turn.

Tiered approval, not "confirm everything"

Model-written memories pass through a deterministic gate that decides auto-confirm vs. hold for review, judged only on properties a model cannot flatter:

• reversibility (importance level)
• conflict with something you already confirmed
• overlap with existing memory
• whether the write traces back to something you actually said

Obvious, reversible, user-anchored writes land automatically. Risky or uncertain ones queue for review. The gate deliberately ignores the model-supplied kind field — letting a self-reported label decide its own exemption would be no gate at all. Auto-confirmed entries stay visible and revocable, and one config flag returns you to review-everything behavior.

Reinforcement: what you repeat gets stronger

Re-observing the same understanding doesn't duplicate it — it reinforces it. The observation count rises, importance climbs at a configurable threshold, and the better-quality phrasing is kept rather than blindly overwritten. Confidence is surfaced (low / medium / high) so the agent can weight established knowledge over one-off remarks.

Skills that improve instead of accumulating

High-value lessons sharing a tag crystallize into a SKILL.md. New evidence refines the existing skill in place — versioned, with your hand edits preserved — instead of spawning a near-duplicate.

Curation runs a real lifecycle: active → stale (idle N days) → archived. Archiving moves a skill out of the active catalog and is fully reversible. Nothing is ever deleted. A backup is taken before every mutating operation, so a bad refine or a hasty archive can be rolled back.

Anti-bloat convergence

The half most memory systems skip.

Skills: detects near-duplicate skills by content similarity and flags refinement-bloated files. Merging generates an umbrella skill and archives the originals (reversible). Folding compacts stacked refinement sections back into clean prose. Candidates that were never actually loaded rank first — duplicated and unused is the strongest case for merging.

Memory: a hard character budget that never silently drops anything (over-budget returns trim candidates for you to decide on), a gate against reworded near-duplicates and thin low-signal writes, and promotion of well-reinforced project memories to global scope.

Detection is always on and costs zero tokens. Every mutating action is opt-in.

Background review

At the end of a turn (throttled), an isolated LLM pass replays that turn's conversation snapshot and asks what's worth remembering. Suggestions route through the same approval gate — the reviewer proposes, it never writes directly.

It runs as a standalone call, so your main conversation and prompt cache are never touched, and because it's a plain text completion with no tools attached it is structurally incapable of side effects. It can be pointed at a different (cheaper or stronger) model than your main one.

Weak models degrade safely: a malformed review is skipped, so the worst outcome is "nothing learned this turn" — never "something wrong learned."

Knows you, and shapes tools to you

Confirmed user-scope preferences and facts accumulate into an auto-grown profile you can inspect, ordered by how consistently you've shown each one.

Skills can also carry a user-style overlay: a small instruction layer applied when the skill is used, derived from your profile. The underlying SKILL.md is never rewritten, so the overlay is fully reversible — clear it and the skill is vanilla again.

Maintenance sweep

A single tool aggregates every read-only check — archivable skills, merge candidates, bloated files, memory budget, promotion candidates, and whether enough outcome data has accumulated to be worth scoring — into one report. Safe to run on a schedule from an external cron; the plugin never installs an internal timer.

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Tools

Memory: memory_remember memory_recall memory_index memory_confirm memory_confirm_batch memory_auto_review memory_profile memory_budget memory_promote memory_forget

Skills: crystallize_skill refine_skill skill_curator archive_skill restore_skill skill_rollback converge_skill fold_skill skill_style

Ops: evolve_maintain memory_stats skill_stats

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Configuration

Everything is configurable through the plugin's settings page (web profile) or your DSH config. Notable switches:

Key	Default	Effect
autoConfirmEnabled	true	false = every model write waits for review
reviewEnabled	true	Background per-turn review
reviewEveryTurns	5	Review throttle
reviewModel	(main model)	Route review to a different model
refineLLM	false	Use an LLM pass when crystallizing/refining skills
reinforceEvery	3	Observations per importance step
memoryMaxChars	20000	Memory character budget (0 disables)
convergeSuggest	true	Surface merge/fold suggestions
curatorStaleDays / curatorArchiveDays	30 / 60	Skill lifecycle thresholds
ftsEnabled	true	false = pure bigram recall, no SQLite

The LLM is only ever used for optional auxiliary passes — skill refinement, background review, and skill merging. All of them are single-shot, skippable, and fall back to deterministic behavior on failure. Nothing runs in your main loop.

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Design rules

• Never break the harness. Every failure path degrades quietly; the plugin cannot prevent a boot.
• Never delete user assets. Archive, back up, roll back — but never destroy.
• No internal timers. In-session work hangs off events; offline work is an external cron calling a tool.
• Ship blank. No preloaded personal data. What it learns stays on your machine and is never packaged.
• Mechanisms over model smarts. Safety comes from deterministic rules, so swapping models changes quality, never safety.

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License

MIT