The previous implementation hit endpoints that do not exist on the RetainDB
API (/v1/recall, /v1/ingest, /v1/remember, /v1/search, /v1/profile/:p/:u).
Every operation was silently failing with 404. This rewrites the plugin against
the real API surface and adds several new capabilities.
API route fixes:
- Context query: POST /v1/context/query (was /v1/recall)
- Session ingest: POST /v1/memory/ingest/session (was /v1/ingest)
- Memory write: POST /v1/memory with legacy fallback to /v1/memories (was /v1/remember)
- Memory search: POST /v1/memory/search (was /v1/search)
- User profile: GET /v1/memory/profile/:userId (was /v1/profile/:project/:userId)
- Memory delete: DELETE /v1/memory/:id with fallback (was /v1/memory/:id, wrong base)
Durable write-behind queue:
- SQLite spool at ~/.hermes/retaindb_queue.db
- Turn ingest is fully async — zero blocking on the hot path
- Pending rows replay automatically on restart after a crash
- Per-row error marking with retry backoff
Background prefetch (fires at turn-end, ready for next turn-start):
- Context: profile + semantic query, deduped overlay block
- Dialectic synthesis: LLM-powered synthesis of what is known about the
user for the current query, with dynamic reasoning level based on
message length (low / medium / high)
- Agent self-model: persona, persistent instructions, working style
derived from AGENT-scoped memories
- All three run in parallel daemon threads, consumed atomically at
turn-start within the prefetch timeout budget
Agent identity seeding:
- SOUL.md content ingested as AGENT-scoped memories on startup
- Enables persistent cross-session agent self-knowledge
Shared file store tools (new):
- retaindb_upload_file: upload local file, optional auto-ingest
- retaindb_list_files: directory listing with prefix filter
- retaindb_read_file: fetch and decode text content
- retaindb_ingest_file: chunk + embed + extract memories from stored file
- retaindb_delete_file: soft delete
Built-in memory mirror:
- on_memory_write() now hits the correct write endpoint
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