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VoidBot/docs/architecture/overview.md
Meta Vens c3d2bf424e Move state storage to Postgres
2026-04-24 15:10:34 +01:00

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VoidBot Architecture Overview

This initial scaffold follows the phase-one shape from the spec:

Discord Gateway
  -> Command Router
  -> Permission Engine
  -> Context Builder
  -> Job Queue
  -> Provider Adapter
  -> Storage Layer
      - PostgreSQL-backed jobs, audit events, and interaction memory
      - persistent local archives for RAG
      - Qdrant or local JSON vector stores for retrieval

Current state

  • apps/bot owns Discord connectivity, routing, and command handling.
  • apps/worker polls owner jobs, runs the local Discord-safe Codex lane, serves bounded history-search tool requests from the RAG index, and prepares handoff bundles when needed.
  • packages/core contains permissions, context assembly, Postgres-backed state storage, style loading, and the rotating system message catalog.
  • packages/providers isolates provider contracts from Discord code.
  • packages/rag contains the message archive, chunking pipeline, local embedding backends, pluggable vector-store backends, and log import state.
  • packages/sandbox defines policy profiles and a dry-run policy runner.

Current shortcuts and tradeoffs

  • Postgres now owns jobs, audit events, and interaction memory, but the archive side of RAG is still file-backed under .voidbot/.
  • Retrieval now uses a persistent vector backend with a local embedding backend by default (qwen3-embedding:0.6b through Ollama).
  • VECTOR_STORE_KIND=local_json keeps the zero-service path available for local development, but VECTOR_STORE_KIND=qdrant is now supported for a proper vector database.
  • Discord history vectors and source-tree/lore vectors stay in separate physical partitions so source indexing no longer rewrites the entire history corpus.
  • The bot live-ingests every message that matches the configured indexing rule and can also backfill from exported log files.
  • The owner Codex flow can perform repeated read-only history searches through a bounded tool loop instead of relying on a single retrieval snapshot.
  • Stock Discord replies are loaded from config/system-messages.json and rotated through shuffled variants to avoid repetitive canned responses.
  • Changing embedding models requires a full vector rebuild from the archived messages, which is handled by npm run rag:rebuild.
  • owner_codex has two lanes:
    • local_exec_owner_only tries a read-only codex exec pass for direct Discord replies
    • manual_package remains available when you want explicit approval-gated packaging
  • When the local Discord-safe lane is not enough, the worker posts a handoff notice and writes the full context bundle to .voidbot/artifacts/<job-id>/.

Upgrade path

  1. Add health checks, backup/restore guidance, and operational runbooks for Postgres and Qdrant.
  2. Add moderation, budgeting, and rate limits before enabling openai_api for member traffic.
  3. Expand worker-side run records and admin tooling around the interaction memory/event stores.
  4. Expand sandbox execution from dry-run policy checks to real constrained runners.