Adds a new column to a table dynamically.

Creates a new PostgreSQL database for a project.

Retrieves all registered agent coordination sessions ordered by last active time.

Initializes the 'agent_sessions' table for multi-agent coordination.

Initializes the base 'records' table in the specified database.

Initializes a professional 'tasks' table in the specified database.

Executes arbitrary SQL queries and returns results as JSON.

Updates or registers the active task and state of an agent in the database (thread-safe upsert).