AI coworkers that edit the same doc you're in.

Off-the-shelf workflow tools (Temporal, Inngest, LangGraph) assume human-authored linear sequences. Trilo's runtime in workflowOrchestrator.ts uses an LLM as the planner: it generates the dependency graph from natural language, dispatches each step to a different AI coworker by capability, enforces workspace-scoped pinned tool parameters, and gates progress through three-way review (approve / reject / regenerate-with-feedback). A 200K-token completion budget caps cost per workflow, and a real safety guard force-serializes when the planner returns zero dependsOn annotations (added after the planner did exactly that in production).

Coworker templates connect to every Lexical page as server-side Yjs peers via Hocuspocus, appearing in awareness with a shimmer effect on the exact blocks they're editing. Initialization order is load-bearing: the Yjs binding has to register before the WebSocket connects, and the Lexical → Yjs writeback listener has to register after sync. Get it wrong and Lexical's normalization permanently accumulates phantom paragraphs across every user's view.

Trilo ships a spec-compliant MCP server (built on @modelcontextprotocol/sdk, live at api.trilo.chat/mcp) and is published in the Anthropic MCP Registry. 77 tools across 14 domain modules: boards, tasks, messages, meetings, knowledge graph, pages (26 alone), spreadsheets and more. Auth supports PAT, bot tokens, and OAuth 2.1 with workspace-level isolation enforced on every call. Schemas are hand-authored Zod, used as the single source of truth shared with internal coworkers.

The desktop app is Tauri 2. The Rust shell calls Swift directly via extern "C" for StoreKit 2 (five IPC functions covering fetch, purchase, entitlements, restore and the transaction listener) plus Sign in with Apple. objc2 reaches into NSApplication.dockTile for badge counts where Tauri's API was broken, and tweaks WKWebView compositing to fix scroll artifacts in virtualized lists. The result is a native macOS App Store build that ships from the same Rust workspace as Linux and Windows.

Stripe subscriptions, Stripe Billing Meters (metered AI overage), Stripe Connect (referral payouts), Apple IAP (8 product IDs across iOS + Mac App Store) and partner/promo plans all flow into a single Postgres credit ledger via a consistent resetCreditsForNewPeriod() regardless of which provider triggered the event. Referral commissions enforce a 30-day hold with atomic eligible → processing transitions before generating a Stripe Transfer with a deterministic idempotency key derived from sorted commission IDs.

Sammy is a Python LiveKit agent that delivers real-time multi-speaker transcription. It is not a conversational voice AI. The interesting work is in infrastructure: per-participant STT stream isolation with a custom 100ms / 5-frame backpressure drop policy, dual-path delivery (Redis WebSocket for authenticated members and a LiveKit data channel for guests), and a 15-second TTL timestamp dedup that survives LiveKit's forked-child dispatcher model where in-memory sets in the parent are invisible to the child.