release: v0.5.16

Author: anandgupta42

CHANGELOG.md

@@ -5,6 +5,18 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.5.16] - 2026-03-30
+
+### Added
+
+- **ClickHouse support** — Connect to ClickHouse Cloud, self-hosted clusters, or local Docker instances running ClickHouse 23.3+. Supports HTTP/HTTPS, TLS mutual auth, and dbt-clickhouse adapter auto-discovery. Includes MergeTree optimization guidance, materialized view design, partition pruning analysis, and query history via `system.query_log`. Requires `npm install @clickhouse/client` (#574)
+
+### Fixed
+
+- **Agent loop detection** — The agent now detects when a single tool is called 30+ times in a session (a pattern seen with runaway tool loops) and pauses for confirmation before continuing. Complements the existing same-input repetition detection (#587)
+- **Improved error diagnostics** — Tool failures now report more specific error categories (`not_configured`, `file_not_found`, `edit_mismatch`, `resource_exhausted`) instead of generic "unknown" classification, improving support triage (#587)
+- **Session environment metadata** — `session_start` telemetry now includes `os`, `arch`, and `node_version` for environment-based segmentation (#587)
+
 ## [0.5.15] - 2026-03-29
 
 ### Added