productivity▌

FlowIO is a lightweight Python library for reading and writing Flow Cytometry Standard (FCS) files. Parse FCS metadata, extract event data, and create new FCS files with minimal dependencies. The library supports FCS versions 2.0, 3.0, and 3.1, making it ideal for backend services, data pipelines, and basic cytometry file operations.

This skill guides migrating any existing backend application to Encore, one migration unit at a time. It supports any source language or framework and targets both Encore.ts and Encore Go. A migration-plan.md summary file and migration-plan/ directory of per-unit detail files are created at the Encore project root to track progress across sessions. This skill contains no Encore code examples — it delegates all Encore-specific implementation to the appropriate language-specific skills.

Comprehensive patterns for creating, maintaining, and managing Architecture Decision Records (ADRs) that capture the context and rationale behind significant technical decisions.

Production AI agent patterns using Trigger.dev's durable execution for orchestration, parallelization, routing, and self-refinement workflows. \n \n Five core patterns: prompt chaining with validation gates, routing to appropriate models, parallel LLM execution, orchestrator-worker fan-out/fan-in, and evaluator-optimizer self-refining loops \n Includes typed batch execution across multiple tasks, recursive self-calls with feedback, and error handling with per-task result inspection \n Integrates

Schedule and manage cron jobs with configuration, logging, and troubleshooting guidance. \n \n Covers crontab syntax, time formats, special characters, and predefined scheduling shortcuts like @daily, @hourly, and @reboot \n Supports user crontabs, system-wide crontab files, /etc/cron.d directories, and predefined hourly/daily/weekly/monthly execution directories \n Includes best practices for script templates, environment variables, lock files to prevent duplicate execution, and output redirect

Framework-driven approach to sequencing features and allocating resources across competing priorities. \n \n Draws on 75 product leaders' frameworks including \"cannonballs vs. lead bullets\" (80/20 balance of big bets and incremental work), \"seasons\" for fast-changing markets, and growth models as common currency for cross-team comparison \n Emphasizes separating conviction from hypothesis, challenging assumptions about impact, and using roadmaps as feasibility checks rather than commitments

Fetch and summarize arxiv papers from their LaTeX source code. \n \n Normalizes arxiv URLs to source format (/src/), downloads .tar.gz archives, and unpacks them locally with caching to avoid re-downloads \n Locates the LaTeX entrypoint (main.tex or equivalent) and recursively reads all relevant source files to reconstruct the full paper \n Generates markdown summaries in the local knowledge directory with contextual tags, designed for integration with the nanochat project \n Includes guidance f

A skill for creating new skills and iteratively improving them.

Structured PRD creation from discovery notes to engineering-ready requirements document. \n \n Orchestrates 8 phases across 2–4 days: problem framing, persona definition, strategic context, solution overview, success metrics, user stories, and scope/dependencies documentation \n Includes problem statement with evidence, target personas, business goals, and competitive context to align stakeholders before engineering begins \n Breaks solutions into epic hypotheses and user stories with acceptance

Send rich messages and interactive cards to Feishu and Lark group chats via webhooks or Bot API. \n \n Supports two integration modes: Custom Bot Webhook (simple, single-group messaging) and App Bot API (multi-chat, image uploads, user mentions) \n Interactive card format with headers, markdown content, multi-column layouts, action buttons, and color-coded templates for announcements, reports, and alerts \n Rich text messages with bilingual support (Chinese and English) using locale-specific con