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PIKA

Changelog

Release notes for PIKA — the private document intelligence system.

0.3.0 - 2026-02-09

Added

  • Version display in health endpoint and admin About section
  • Version detection tests for health endpoint and admin UI
  • Comprehensive README sections for testing, CI/CD, and deployment

Changed

  • Production hardening improvements for version management
  • CI pipeline now runs on all v* tags

Fixed

  • Auth mock in test_admin_page_accessible_when_authenticated

0.2.0 - 2026-02-09

Added

  • Authentication & multi-user support — bcrypt password hashing, role-based access (admin/user), per-user chat history and sessions
  • Query queue system — FIFO queue with configurable concurrency, per-user limits, position display, and automatic timeout
  • Backup & restore — full ZIP backup of documents, index, config, and user database with background progress tracking and one-click restore
  • Streaming responses — real-time token streaming from Ollama to the browser
  • Prometheus metrics — /metrics endpoint with request latency, query counters, queue gauges, and index stats
  • Structured JSON logging — production-grade logging with human-readable fallback in debug mode
  • Ollama retry logic — automatic retry with exponential backoff for transient LLM failures
  • Async background indexing — start/cancel/poll indexing operations without blocking the UI
  • GitHub Actions CI — lint (ruff), test (pytest + coverage), dependency audit (pip-audit), and Docker image build/push to GHCR
  • SSH deploy workflow — manual-trigger deployment to multiple environments with health checks and auto-rollback
  • Release workflow — auto-create GitHub Releases from v* tags
  • CSRF protection on all forms
  • Rate limiting on queries and uploads via slowapi
  • Security headers on all responses (X-Content-Type-Options, X-Frame-Options, X-XSS-Protection, Referrer-Policy)
  • Audit logging for admin actions with pagination
  • Feedback system — thumbs up/down on query responses
  • Dark mode and modern UI redesign
  • First-launch setup flow and admin page redesign
  • NVIDIA GPU support in Docker Compose with AMD ROCm as commented alternative
  • Automated backup via API with cron integration
  • Graceful degradation when Ollama is unavailable
  • Clear chat history button
  • Cancel model download capability
  • Loading indicators on admin documents section
  • Admin page performance caching

Changed

  • Default model changed to llama3.2:3b
  • Consolidated Docker Compose files (base + override pattern)
  • Hardcoded values moved to config.py
  • Query status tracking is now user-specific

Fixed

  • ChromaDB readonly database error after backup restore
  • Streaming query source serialization (asdict())
  • History logging and navigation-resilient queries
  • Race condition on _running_queries set
  • Restore success message now correctly states index is restored
  • Duplicate message bug in chat
  • Model pull progress tracking across page navigation

Security

  • Password complexity requirements (min 8 chars, uppercase, lowercase, digit)
  • Path traversal prevention on file operations
  • Container runs as non-root pika user
  • Vulnerable dependencies bumped (pip-audit)

0.1.0 - 2026-01-15

Added

  • Initial release of PIKA (Private Intelligent Knowledge Assistant)
  • FastAPI web application with Ollama LLM integration
  • RAG engine with ChromaDB vector storage and sentence-transformers embeddings
  • Document processor supporting PDF, DOCX, TXT, and Markdown
  • Web chat interface with file upload
  • Docker deployment with setup script
  • Admin page for model and document management
  • Confidence scoring on query responses