[socket-pr-bot]

Summary

• Upgrades the Coana CLI from 15.14.2 to 15.15.0, and refreshes the vendored coana-cache.mjs from that release.
• The changelog note lands under ## [Unreleased]; the release workflow picks the Socket CLI version and promotes the block.
• This PR was created automatically by a bot.

Engine changelog

For what is included in this engine release, see the reachability analysis changelog.

[cursor]

PR Summary

Medium Risk
Engine version bumps can change reachability and fix outcomes even when Socket CLI code is unchanged.

Overview
Bumps the default Coana CLI version Socket CLI downloads and spawns for reachability analysis and socket fix from 15.14.2 to 15.15.0 by updating COANA_CLI_VERSION in src/constants.mts.

Adds an [Unreleased] → Changed entry in CHANGELOG.md so the next Socket CLI release documents the engine upgrade.

^{Reviewed by Cursor Bugbot for commit fb1cfb7. Configure here.}