v1.18.0

What's Changed

• docs: add the ecosystem roadmap, the agents-as-MCP-tools design/plan, and the I29/D22 security spec by @asafgolombek in #1022
• fix(share): fail closed on unverified share replay by @asafgolombek in #1021
• feat(index): full-body store — V48 item.body, uncapped keyword search, and full bodies for the prose sources by @asafgolombek in #1023
• chore: release main by @nimbus-release-bot[bot] in #1025

Full Changelog: v1.17.0...v1.18.0