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+---
+"@fission-ai/openspec": minor
+---
+
+### New Features
+
+- **Mistral Vibe support** — OpenSpec can now initialize Mistral Vibe as a supported skills-only tool using `.vibe/skills/`
+
+### Bug Fixes
+
+- **Case-insensitive requirement headers** — Requirement headers are now parsed regardless of capitalization, so specs no longer fail to parse over header casing
+- **Zsh completions on oh-my-zsh** — Fixed shell completion setup so tab completion installs correctly under oh-my-zsh's `compinit`
+
+### Other
+
+- **Clearer validation hints** — When a requirement has SHALL/MUST only in its header, `openspec validate` now points you to move the keyword onto the requirement body line instead of showing the generic error