convex-functions

# Convex Functions Master Convex functions including queries, mutations, actions, and HTTP endpoints with proper validation, error handling, and runtime considerations. ## Code Quality All examples in this skill comply with @convex-dev/eslint-plugin rules: - Object syntax with `handler` property - Argument validators on all functions - Explicit table names in database operations See the Code Quality section in [convex-best-practices](../convex-best-practices/SKILL.md) for linting setup. ## Documentation Sources Before implementing, do not assume; fetch the latest documentation: - Primary: https://docs.convex.dev/functions - Query Functions: https://docs.convex.dev/functions/query-functions - Mutation Functions: https://docs.convex.dev/functions/mutation-functions - Actions: https://docs.convex.dev/functions/actions - HTTP Actions: https://docs.convex.dev/functions/http-actions - For broader context: https://docs.convex.dev/llms.txt ## Instructions ### Function Types Overview | Type | Database Access | External APIs | Caching | Use Case | | ----------- | ------------------------ | ------------- | ------------- | --------------------- | | Query | Read-only | No | Yes, reactive | Fetching data | | Mutation | Read/Write | No | No | Modifying data | | Action | Via runQuery/runMutation | Yes | No | External integrations | | HT...