@hy-sde-org/dsh-tool-memory

The model-facing memory surface for DeepSeek Harness — the six tools retain, recall, reflect, memory_edit, learn, and mine_sessions over the host ctx.memory service, plus a memory:project system-prompt section that reloads the session's project memory at the start of every session. Ported from the @oh-my-pi coding-agent memory surface; storage lives in @hy-sde-org/dsh-memory.

This package is agent-plane: it mounts as a preset row and resolves the host memory service, registering no service of its own. It installs as a standalone plugin for stock DeepSeek Harness (dsh-v0.1.2-rc.1 and later) — see @hy-sde-org/dsh-memory for the install recipe and the preset example.

The six tools

• retain — store one or more durable facts (user preferences, project decisions, architectural choices) for future sessions. Batch related facts; entries are self-contained, normalized, and deduplicated.
• recall — relevance-ranked search over bank + lessons + summary. Returns ids that round-trip through memory_edit. Use proactively before questions about past decisions or preferences. When a host sessionQuery service is mounted, past-session hits merge in as a session source tier.
• reflect — synthesize an answer across many stored memories (blends, unlike recall). Grounding is memory-only; verify repository facts.
• memory_edit — update (replace content/importance), forget (hard delete), invalidate (soft supersede, optional replacement_id). Lesson and summary entries are read-only facts.
• learn — capture one durable lesson (what/when/why) into learned.md; write-path neutralization strips prompt-injection markers and secrets.
• mine_sessions — harvest reusable lessons from your own past sessions (digests from compaction summaries, failures from turn/end error reasons, all-completed todos), stored as learn entries with session provenance and deduped. Needs a host sessionQuery service; without one it reports unavailable rather than erroring — this standalone ships the bridge (session-history.ts, ctx.get('sessionQuery') duck-typed) but no session backend.

Prompt injection

apply() registers systemPrompt.section({ name: 'memory:project', order: 150 }) whose text is evaluated at each assembly and returns the calling session's project memory — memory_summary.md + learned.md, combined and head-tail truncated to injectionMaxChars (default 16000 chars) — or '' for a project with no memory yet. The session identity comes from context.agent.session.header.cwd, so each project sees its own bank and a fresh process picks it up on the very first turn.

Config (the tool-memory row)

| Key | Default | Meaning | |---|---|---| | root | <harness home>/memories | Must match the ctx.memory row's root. | | injectionMaxChars | 16000 | Combined char budget for the injected summary + lessons. | | enabled | true | Set false to disable prompt injection while keeping the tools. |

Tests

pnpm -r --filter @hy-sde-org/dsh-tool-memory test