v1.16.0

What's Changed

• Rebuild weekly search report on the durable analytics API (fail-loud) by @jpr5 in #120
• Post weekly search-report success digest to #engr by @jpr5 in #121
• Fix monthly gap-analysis Notion tables + route report to #engr by @jpr5 in #122
• Add issue-open Slack notification and retire unreleased-changes digest by @jpr5 in #125
• Make indexing and per-source chunk optional so minimal RAG configs validate (#88) by @jpr5 in #124
• atlas: disable keep-alive on the test/proxy LLM client to fix Premature close by @jpr5 in #127
• ci: scope vitest discovery to src/ so dist twins don't double-run by @jpr5 in #128
• chore: release v1.16.0 by @jpr5 in #129

Full Changelog: v1.15.4...v1.16.0