Description

Adds a PostgreSQL tool kind postgres-list-active-queries that returns the top N currently running queries (state='active') from pg_stat_activity, ordered by longest running first. Each row includes: pid, user, database, application_name, client_addr, state, wait_event_type, wait_event, backend_start, xact_start, query_start, computed duration, and query (SQL text).

Parameters supported

• min_duration (optional) — only include queries running at least this long (e.g., "1 minute", "2 seconds").

• exclude_application_names(optional) — comma-separated list of application_name values to exclude (e.g., "psql,pgAdmin 4,my-batch").

• limit (optional) — max rows to return (default 50).

Test Output

• Test without filter:

• Test with filter, but response

• Test with filter, but no response

Should include a concise description of the changes (bug or feature), it's
impact, along with a summary of the solution

PR Checklist

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