Lattice AI v4.1.0 RC

Lattice AI v4.1.0 RC — Frontend & Desktop Rebuild

Status: release candidate. This release builds and validates artifacts from
main @ v4.0.1 plus the frontend/desktop rebuild work. It does not publish to
PyPI, npm Registry, VS Code Marketplace, Open VSX, or production deployment
targets.

v4.1.0 replaces the frontend implementation with the Digital Brain desktop
architecture while preserving v4.0.1 capabilities and backend API contracts.

Included

• React + TypeScript + Vite SPA for /app.
• TanStack Query, Zustand, React Flow, Cytoscape.js, Tailwind CSS, and local
  shadcn-style UI primitives.
• Generated OpenAPI TypeScript client from the existing FastAPI application.
• Tauri 2.0 primary desktop shell that launches the local backend.
• Electron fallback shell retained only as a fallback desktop runner.
• Primary navigation: Brain, Ask, Capture, Act, Library, System.
• Legacy static v3 frontend assets removed after capability migration.
• static/app Vite assets packaged for offline/local-first operation.

Preserved

• Existing FastAPI backend as the source of truth.
• Brain Core, storage architecture, Knowledge Graph data, and user data
  compatibility.
• Durable agent/workflow runtime behavior, approvals, triggers, tools, MCP,
  models, workspaces, snapshots, activity, network, and admin/security surfaces.
• Local-first, privacy-first, and offline-capable operation.

Expected Artifacts

• dist/ltcai-4.1.0-py3-none-any.whl
• dist/ltcai-4.1.0.tar.gz
• dist/ltcai-4.1.0.vsix
• ltcai-4.1.0.tgz

Validation Scope

• Python compile check.
• Ruff.
• Unit tests.
• Live integration tests.
• Frontend lint.
• TypeScript build.
• Playwright visual tests.
• Generated OpenAPI client verification.
• Desktop shell verification.
• No CDN dependency verification.
• Offline/static app startup verification.
• Release artifact validation.
• Wheel smoke test.
• npm pack dry-run.

External Registries

No PyPI, npm Registry, VS Code Marketplace, or Open VSX publish step is part of
this release candidate.