v3.4.0

0xPlaygrounds/rigv3.4.0Jun 6, 2026by igorls

AI Summary

Major backend infrastructure update introducing pluggable vector backends, Docker containerization, and reliability improvements for the MCP server and CLI.

Key Highlights

Pluggable vector backends: Qdrant, pgvector, sqlite_exact alongside default ChromaDB
Docker images available for both CPU and GPU deployments
New migration tool for normalizing legacy wing names
Embeddinggemma now works with ChromaDB 1.5.x
PyPI publishing via GitHub Actions Trusted Publishing with OIDC

New Features

Selectable backends via MEMPALACE_BACKEND environment variable
Docker support for both MCP server and CLI applications
mempalace migrate-wings command for wing name normalization
Known-systems lexicon for atomic multi-word product names
drawer_id hash collision prevention
Importing mcp_server now respects privacy kill-switch
diary_write accepts content alias parameter

Full Release Notes

## v3.4.0 — pluggable backends, Docker, and reliability fixes

### Features
- **Pluggable vector backends** — Qdrant, pgvector, and sqlite_exact alongside the default ChromaDB, selectable via `MEMPALACE_BACKEND` / `--backend`.
- **Docker images** (CPU + GPU) for the MCP server and CLI.
- **`mempalace migrate-wings`** — one-time migration that normalizes legacy wing names (strip leading/trailing separators) so pre-upgrade palaces stay discoverable. See `docs/recovery/wing-name-migration.md`.
- **Known-systems lexicon** keeps multi-word product names atomic in entity detection.

### Fixes
- embeddinggemma (the default model) now works with ChromaDB 1.5.x — semantic search was silently failing on fresh installs.
- Prevent silent data loss from `drawer_id` hash collisions.
- Importing `mcp_server` no longer recreates `~/.mempalace` (respects the privacy kill-switch).
- `diary_write` accepts a `content` alias and restores the missing-parameter diagnostic.
- Explicit-vector backends handle single-document inputs correctly.

### Infrastructure
- PyPI publishing via GitHub Actions **Trusted Publishing** (OIDC), gated by manual approval.