0.18.0

New Features ✨

• (span) Make span list dual-mode and add --period flag by @BYK in #461
• Refactor SKILL.md into modular reference files by @BYK in #458

Bug Fixes 🐛

• (constants) Normalize bare hostnames in SENTRY_HOST/SENTRY_URL by @BYK in #467
• (dsn) Treat EISDIR and ENOTDIR as ignorable file errors by @BYK in #464
• (test) Use os.tmpdir() for test temp directories by @BYK in #457
• Make piped output human-readable instead of raw CommonMark by @BYK in #462
• Clean up upgrade output and hide empty table headers by @BYK in #459
• Improve error messages — fix ContextError/ResolutionError misuse by @BYK in #456

Documentation 📚

• Add key principles and API schema workflow to agent guidance by @BYK in #466

Internal Changes 🔧

• (list) Align all list commands to issue list standards by @BYK in #453